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WO2018130365A1 - Adsorbant comprenant sur un support des couches de polyélectrolytes et un matériau adsorbant particulaire, utilisation dudit absorbant et appareil de protection respiratoire comprenant l'adsorbant - Google Patents

Adsorbant comprenant sur un support des couches de polyélectrolytes et un matériau adsorbant particulaire, utilisation dudit absorbant et appareil de protection respiratoire comprenant l'adsorbant Download PDF

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Publication number
WO2018130365A1
WO2018130365A1 PCT/EP2017/082620 EP2017082620W WO2018130365A1 WO 2018130365 A1 WO2018130365 A1 WO 2018130365A1 EP 2017082620 W EP2017082620 W EP 2017082620W WO 2018130365 A1 WO2018130365 A1 WO 2018130365A1
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WIPO (PCT)
Prior art keywords
adsorber
polyelectrolyte
particulate
cationic
anionic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2017/082620
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German (de)
English (en)
Inventor
Benjamin Brandenburg
Hans-Jürgen BUSCHMANN
Markus OBERTHÜR
Jochen GUTMANN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Draeger Safety AG and Co KGaA
Original Assignee
Draeger Safety AG and Co KGaA
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Publication of WO2018130365A1 publication Critical patent/WO2018130365A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
    • B01J20/28028—Particles immobilised within fibres or filaments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/0203—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of metals not provided for in B01J20/04
    • B01J20/0259—Compounds of N, P, As, Sb, Bi
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
    • B01J20/08—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04 comprising aluminium oxide or hydroxide; comprising bauxite
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
    • B01J20/12—Naturally occurring clays or bleaching earth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
    • B01J20/28026—Particles within, immobilised, dispersed, entrapped in or on a matrix, e.g. a resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
    • B01J20/3202—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the carrier, support or substrate used for impregnation or coating
    • B01J20/3204—Inorganic carriers, supports or substrates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
    • B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
    • B01J20/3242—Layers with a functional group, e.g. an affinity material, a ligand, a reactant or a complexing group
    • B01J20/3268—Macromolecular compounds
    • B01J20/327—Polymers obtained by reactions involving only carbon to carbon unsaturated bonds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
    • B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
    • B01J20/3242—Layers with a functional group, e.g. an affinity material, a ligand, a reactant or a complexing group
    • B01J20/3268—Macromolecular compounds
    • B01J20/3272—Polymers obtained by reactions otherwise than involving only carbon to carbon unsaturated bonds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
    • B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
    • B01J20/3289—Coatings involving more than one layer of same or different nature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2220/00—Aspects relating to sorbent materials
    • B01J2220/50—Aspects relating to the use of sorbent or filter aid materials
    • B01J2220/62—In a cartridge

Definitions

  • Adsorber comprising on a support polyelectrolyte layers and a particulate Adsorbermaterial, its use and respirator with the adsorber
  • the present invention relates to an adsorber comprising at least one carrier provided with polyelectrolyte material comprising anionic and cationic polyelectrolyte layers and a particulate adsorber material. Furthermore, the invention relates to the use of the adsorbent as a filter for breathing air or water and a respirator, such as a respirator or a breathing circuit device, equipped with the adsorber.
  • Activated carbon is used as such and coated in filters of various kinds as Adsorbermaterial. If activated charcoal is also supplemented with metal salts, its capacity for many gaseous toxins is improved. This is e.g. described in DE10201 1 1 14133 A1.
  • other inorganic adsorber materials are known. These include zeolites, bentonites or alumina. Boron nitride is also described as an adsorbent material, e.g. by Chen et at., Nature Comm. 2013, 1777.
  • Coatings of thin layers of polyelectrolytes on a carrier material are known.
  • the layers can be prepared, for example, by alternately immersing a suitable support material in aqueous solutions of polycations and polyanions. In this way, coatings with a defined number of layers can be produced. This is described, for example, in DE 4026978 A1.
  • Object of the present invention is to provide novel adsorber for water, air or breathing gases.
  • the adsorber material and any other active centers should be spatially decoupled, so that they can perform their function unaffected by each other, even against different pollutants to be bound.
  • the present invention relates to an adsorber comprising polyelectrolyte and particulate Adsobermaterial.
  • the polyelectrolyte is characterized by a layered structure of polyelectrolyte layers (polyelectrolyte cation layer followed by polyelectrolyte anion layer and vice versa).
  • Adsorber particles are incorporated in the polyelectrolyte.
  • the adsorbers produced in this way can be used as filter materials, for example as inserts in gas masks or respiratory protection filters, or else as water filters.
  • the present invention comprises a method for producing these adsorber materials.
  • the surfaces of these non-polar materials advantageously have a sufficiently high electrical charge or polarizability. So the surface of activated carbon is non-polar. Although a small number of hydroxyl and / or carboxyl groups can be produced on the surface of such adsorber materials by any oxidation processes, this is not sufficient to permanently permanently install the adsorber materials in a polyelectrolyte layer.
  • polyelectrolytes with hydrophobic side chains can be used.
  • the hydrophobic side chains are ideally deposited on the surfaces of the nonpolar materials and the ionic groups of the polyelectrolytes orientate themselves to the outside and ensure a sufficient charge density on the surface. Whether this procedure also leads to success for activated carbon or boron nitride while retaining the adsorptive properties has not been known hitherto.
  • the polyelectrolytes with their hydrophobic groups settle on the surface of the activated carbon or boron nitride particles in such a way that access to the pores of the adsorber materials is made difficult or even blocked, as a result of which the adsorption capacity should be drastically reduced.
  • the adsorber materials are encased by the polyelectrolytes without great influence on the adsorption capacity.
  • the investigations carried out have shown that the adsorber properties of the investigated adsorber materials are only slightly reduced in the polyelectrolyte layers.
  • the prerequisite for this is that the particulate adsorber material used is brought into contact with a polyelectrolyte layer, advantageously coated in a separate step, so that incorporation into a polyelectrolyte layer on the support can be realized.
  • Suitable adsorbent materials are different activated carbons, zeolites, bentonites, alumina, silica gels, metal-organic frameworks (MOF 's ) but also supramolecular complexing agents such as cyclodextrins, cucurbiturils, calixarenes or resorcinarenes. Boron nitride can also be used as adsorbent material.
  • Suitable anionic polyelectrolytes with hydrophobic side chains are, for example, polystyrenesulfonate, polycarboxylic acids, poly (meth) acrylic acids, polyvinylphosphonic acid, polyphosphoric acid, pectins, amidopectins, alginates and heparins. Included here are polymers, also as copolymers, which have corresponding side groups, in particular carboxyl, sulfonic acid, sulfuric acid, phosphonic acid or phosphoric acid side groups.
  • Suitable cationic polyelectrolytes are, for example, polyvinylamine, polyvinylammonium chloride, polyethyleneimine and polyvinylpyridine. Included here are polymers, also as copolymers, which have corresponding side groups, in particular amine, imine or pyridine side groups.
  • an aqueous solution of the polyelectrolytes is suitable. Since boron nitride zBidR has a negative surface charge, a cationic polyelectrolyte such as polyvinylamine or polyethyleneimine should be suitably used to envelop the adsorber.
  • the particulate adsorber material is enveloped by either an anionic polyelectrolyte layer or a cationic polyelectrolyte layer, preferably by a cationic polyelectrolyte layer.
  • the particulate adsorber material is first coated with a cationic followed by an anionic polyelectrolyte layer, or the particulate adsorbent material is first coated with an anionic followed by a cationic polyelectrolyte layer (the latter variant is preferred).
  • a polyelectrolyte layer is preferred or not more than two complementary polyelectrolyte layers are applied to the particulate adsorber material.
  • the cationic polyelectrolyte layer in particular polyvinylamine, is preferably the only (particularly preferred) or the last polyelectrolyte layer on the particulate adsorber material.
  • the particulate adsorbent material may be "deposited" on a complementary polyelectrolyte layer of the carrier, but is preferably embedded in the sequence of polyelectrolyte layers on the carrier, respectively.
  • inorganic salts which are preferably sparingly soluble or even insoluble, can be coated in the form of powdered and / or granulated salts by means of anionic polyelectrolytes, such as polyvinylamine or polyethyleneimine.
  • anionic polyelectrolytes such as polyvinylamine or polyethyleneimine.
  • enveloped adsorber materials and coated metal salts can be incorporated separately into absorber layers of support materials, whereby the adsorber capacity of the activated carbon is not influenced by the metal salts, as is usually the case in the direct impregnation of the activated carbon with metal salts.
  • Suitable inorganic salts are copper, platinum, palladium and zinc salts.
  • the layered structure of the polyelectrolyte layer has the advantage over direct impregnation of activated carbon with metal salts that the adsorber capacity of the adsorber materials is not reduced.
  • the carrier is preferably a textile carrier material. Nonwovens, fiber bundles and fabrics, for example of plastic materials such as polyester and / or polyacrylamide but also glass and rockwool, are suitable as textile carrier matehal for applying the polyelectrolyte layers and the particulate adsorber.
  • the starting materials are preferably first coated with a cationic polyelectrolyte, such as polyvinylamine or polyethyleneimine. Such modified polymer surfaces are suitable for the construction of polyelectrolyte layers.
  • the carrier can also be used untreated. However, pretreatment increases the adhesion on the fiber surface.
  • the anchoring of linear polyvinylamines on textile surfaces is described in DE102005026596. A description of the polyvinylamine modification of surfaces for building molecular layers can also be found in: M. Meilikhov, K. Yusenko, E. Schollmeyer, C. Mayer, H.-J. Bushman, R.A. Fischer: "Stepwise deposition of metal organic frameworks on flexible synthetic polymer surfaces", Dalton Trans. 40, 4838 (201 1). This method can also be used for this method.
  • the coating of the adsorbent materials takes place in solutions of anionic or cationic polyelectrolytes, preferably in aqueous solutions.
  • the polar adsorber materials can then be bound to a support.
  • the enveloping of the adsorbent materials takes place in solution, preferably in aqueous solutions.
  • the coated and therefore polar adsorbent materials can then be bound to a support.
  • the coating is applied, for example, by introducing the selected particulate adsorber or a mixture of different adsorbers or the inorganic salt or a mixture of different adsorbers into a solution of a suitable polyelectrolyte with stirring.
  • the adsorber particles are coated with the polyelectrolyte and subsequently coated on a complementary polyelectrolyte layer by immersing a corresponding carrier with the complementary electrolyte layer as the outermost polyelectrolyte layer in the solution of the complementary polyelectrolyte and with the coated particulate adsorber or the coated particulate inorganic salt ,
  • the latter polyelectrolyte then also forms the next layer on the support
  • a rinsing solution such as water, if appropriate plus wetting agent, is used to rinse off unbound constituents.
  • particulate adsorber without coating to a suitable outer polyelectrolyte layer of the support and subsequently to cover it by a layer of a complementary polyelectrolyte and to install it in this case.
  • particulate adsorber materials with a layer sequence of complementary polyelectrolytes before they are "docked" to a polyelectrolyte layer of the carrier, wherein the docking itself forms a polyelectrolyte layer on the carrier.
  • the starting material used was a polyester (polyethylene terephthalate (PET)) fabric.
  • PET polyethylene terephthalate
  • a methanol / water mixture (1: 1)
  • PET tissue equipped with fixed PVA was immersed in a dispersion of Example 2a for one minute. Thereafter, the textile material was washed with distilled water. It was then immersed in a 1% by weight aqueous solution of polyvinylamine for 1 minute. Then it was rinsed again with distilled water.
  • This process can be repeated as often as desired, according to the present example, it was repeated 20 times to increase the number of polyelectrolyte layers. This is shown schematically in FIG.
  • PET tissue equipped with fixed PVA was immersed in a dispersion of Example 2b for one minute. Thereafter, the textile material was washed with distilled water. It was then immersed in a 1% by weight aqueous solution of polyvinylamine for 1 minute. Then it was rinsed again with distilled water. This process can be repeated as often as desired, according to the present example, it was repeated 20 times to increase the number of polyelectrolyte layers.
  • PET tissue equipped with fixed PVA was immersed in a dispersion of Example 2c for one minute. Thereafter, the textile material was washed with distilled water. It was then immersed in a 1% by weight aqueous solution of polyvinylamine for 1 minute. Then it was rinsed again with distilled water.
  • This process can be repeated as often as desired, according to the present example, it was repeated 20 times to increase the number of polyelectrolyte layers.
  • This process can be repeated as often as desired, according to the present example, it was repeated 20 times to increase the number of polyelectrolyte layers.
  • PET tissue equipped with fixed PVA was immersed in a dispersion of Example 2b for one minute. Thereafter, the textile material was washed with distilled water. It was then immersed for 1 minute in an aqueous dispersion of Example 2e. Then it was rinsed again with distilled water.
  • PET tissue equipped with fixed PVA was immersed in a dispersion of Example 2c for one minute. Thereafter, the textile material was washed with distilled water. It was then immersed for 1 minute in an aqueous dispersion of Example 2e. Then it was rinsed again with distilled water.
  • This process can be repeated as often as desired, according to the present example, it was repeated 20 times to increase the number of polyelectrolyte layers.
  • PET fabric equipped with fixed PVA was immersed in a dispersion of Example 2d for one minute. Thereafter, the textile material was washed with distilled water. It was then immersed for 1 minute in an aqueous dispersion of Example 2e. Then it was rinsed again with distilled water.
  • This process can be repeated as often as desired, according to the present example, it was repeated 20 times to increase the number of polyelectrolyte layers.
  • Coal carbon particles 1, 2 ⁇ 0,3 mmol / g
  • Figure 3 shows the adsorption of Basic Blue 3 by polyelectrolyte layers with hard coal particles on a fabric (Example 3a). As the number of layers of coal particles increases, so does the amount of dye adsorbed.
  • Tissue 3a 0.6 ⁇ 0.2 mg carbon per gram of tissue and layer
  • Tissue 3b 0.9 ⁇ 0.2 mg carbon per gram of tissue and layer
  • Tissue 3c 0.4 ⁇ . 0.1 mg of carbon per g of fabric and layer
  • 3d tissue no dye adsorption.
  • the detection of copper in the coating was carried out qualitatively with the aid of energy-dispersive X-ray spectroscopy. However, it was not possible to quantify the amount of copper, since the lowest layers are shielded as the number of polyelectrolyte layers increases.
  • the tissue with a volume flow of 0.25 L / min and 20 ° C and a humidity of 70% r. F. (relative humidity) and a predetermined concentration of noxious gas (see Table 1) flows through until the predetermined concentration of the noxious gas (desired limit) behind the coated fabric is reached.
  • the filtered volume is measured.
  • the fabric with 20 layers of pure Polyelektrolytbe- coating (10 times PSSS and 10 times PVA) was examined by the same method on its adsorbability and given an equivalent amount of the activated carbon and the boron nitride used on nonwoven.
  • a fleece with the edge length of 2 x 2 cm was embedded in the reactor and then the fine powder (from 2 b - d) distributed evenly with a glass rod on the nonwoven.
  • FIG. 2 shows the schematic structure of polyelectrolyte layers on a carrier material (blue: polycations, red: polyanions) and coated adsorber material. Between each immersion in a polyelectrolyte solution is rinsed with water.
  • Fig. 3 shows the adsorption of the dye Basic Blue 3 on PET fabric which has been coated with polyelectrolyte layers containing hard coal activated carbon particles, depending on the number of activated carbon particle layers.
  • Table 1 shows the adsorption of the dye Basic Blue 3 on PET fabric which has been coated with polyelectrolyte layers containing hard coal activated carbon particles, depending on the number of activated carbon particle layers.
  • AK coconut shell activated carbon

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  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

L'objet de l'invention est un adsorbant comprenant au moins un support pourvu d'un matériau polyélectrolytique comportant des couches de polyélectrolytes anioniques et cationiques et un matériau adsorbant particulaire. L'invention concerne en outre l'utilisation de l'adsorbant comme filtre pour l'air respiratoire ou l'eau et un appareil de protection respiratoire, tel qu'un masque de protection respiratoire ou un respirateur, équipé de l'adsorbant.
PCT/EP2017/082620 2017-01-16 2017-12-13 Adsorbant comprenant sur un support des couches de polyélectrolytes et un matériau adsorbant particulaire, utilisation dudit absorbant et appareil de protection respiratoire comprenant l'adsorbant Ceased WO2018130365A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017000309.2A DE102017000309A1 (de) 2017-01-16 2017-01-16 Adsorber umfassend auf einem Träger Polyelektrolytschichten und ein partikuläres Adsorbermaterial, dessen Verwendung und Atemschutzgerät mit dem Adsorber
DE102017000309.2 2017-01-16

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WO2018130365A1 true WO2018130365A1 (fr) 2018-07-19

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CN111659349A (zh) * 2020-06-16 2020-09-15 天津清科环保科技有限公司 一种自组装蜂巢活性炭-纳米粒子模块及其制备方法

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CN113083228B (zh) * 2021-03-04 2023-05-09 湘潭海泡石科技有限公司 一种碳掺杂海泡石复合多孔吸附材料及其制备方法和应用

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WO2013053473A1 (fr) * 2011-10-14 2013-04-18 Deutsches Textilforschungszentrum Nord-West E.V. Matériaux contenant des polyélectrolytes immobilisés

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