WO2021208013A1 - Method for manufacturing catalyst reactant for high-efficiency catalysis in thermal reaction - Google Patents

Abstract

A method for manufacturing a catalyst reactant for high-efficiency catalysis in a thermal reaction. The manufacturing method mainly comprises: preparing a three-dimensional catalyst carrier; preparing at least one aqueous nanometal particle solution; immersing the catalyst carrier in a methanol solution containing a silyl compound, then taking the catalyst carrier out, drying and refrigerating to complete a surface modification step; immersing the catalyst carrier in an aqueous nanometal particle solution, then taking out the catalyst carrier and blow-drying, so that a first nanometal particle layer is formed on the surface of the catalyst carrier; and immersing the catalyst carrier having the first nanometal particle layer into a methanol solution containing dodecylamino alcohol to perform modification and then taking out the catalyst carrier and drying, immersing the catalyst carrier in the aqueous nanometal particle solution again and then taking out the catalyst carrier and blow-drying, so that a second nanometal particle layer is formed on the surface of the catalyst carrier having the first nanometal particle layer.

Description

Manufacturing method of catalyst reactant with high-efficiency catalysis of thermal reaction Technical field

The present invention relates to a method for manufacturing a catalyst reactant with high-efficiency catalysis of thermal reaction, and particularly refers to a catalyst reactant applied to a catalyst-catalyzed gas-phase reaction system to improve the combustion reaction of the fuel provided in the catalyst-catalyzed gas-phase reaction system Catalytically active substance.

Background technique

In the current age of industrial and commercial development, the air that humans rely on for their livelihood is chronically harming people’s health due to industrial combustion exhaust gas and the gas emitted by vehicles. The main reason is the harmful suspended particles in the air, which in addition to cause various breathing System and allergic diseases will even affect home quality and work efficiency. In recent years, air quality issues have gradually attracted the attention of the world.

Traditional large-scale heating equipment needs to burn a large amount of coal to produce heat, and the large amount of carbonized particles produced during the combustion process will inevitably cause air pollution, causing the fine suspended particulates (PM2.5, diameter ≦2.5 microns) in the atmosphere to continue to increase. Human health is endangered regardless of national borders and territories. In recent decades, countries in the world have spared no effort in addressing air pollution issues and seeking ways to improve.

In view of this, a heating system for catalyst-catalyzed gas-phase reaction was developed, which is mainly used in the heating system equipped with multiple catalyst reactants in the reaction furnace, and the multiple catalyst reactants that have been heated in the reactor It can form a continuous thermal reaction with the fuel, and the heat energy generated by the multiple reactants formed by the thermal reaction is used to continuously heat the liquid stored in the reactor. This constitutes a heating system , It can be used as power or heat source for various purposes, so that it does not need to be heated by open flame combustion, completely avoiding carbonized particles or toxic gases generated during combustion, thereby effectively improving air quality.

technical problem

However, the existing heating system for catalyst-catalyzed gas-phase reaction uses a catalyst reactant composed of a single material and a single layer of nano metal particles, so that the existing catalyst reactant must be heated to a relatively high temperature. High temperature can be used for thermal reaction with fuel, and its oxidation efficiency is also low. Therefore, the thermal reaction efficiency cannot be effectively or better greatly improved.

Therefore, how to develop a catalyst reactant with multiple composite nano-metal particles so that the catalyst reactant can have a lower ignition temperature and high oxidation efficiency is the main problem to be solved by the present invention.

Technical solutions

The purpose of the present invention is to provide a method for producing a catalyst reactant with high efficiency catalysis of thermal reaction. The catalyst reactant of the present invention is particularly applied to a catalyst catalytic gas phase reaction system to serve as an elevated catalyst catalytic gas phase reaction system. The catalytic activity of the internal fuel combustion reaction, and the preparation method of the catalyst reactant includes:

Step 1. Preparation of catalyst carrier: at least one oxide is made into a catalyst powder, and then the catalyst powder is granulated to form a three-dimensional catalyst carrier;

Step 2. Prepare at least one aqueous nano metal particle solution;

Step 3. Surface modification of the catalyst carrier: soak the catalyst carrier in a methanol solution containing 1-15% silanyl compound, and let it stand for 1 to 3 hours, then take out the catalyst carrier and clean it with a cleaning solution, and then apply the catalyst carrier Dry the program and send it to the refrigeration program;

Step 4. Join the first layer of nano metal particles on the surface of the catalyst carrier: Immerse the surface-modified catalyst carrier in the prepared aqueous nano metal particle solution, and then let it stand for 1 to 3 hours, then take out the catalyst carrier and The cleaning solution is used for cleaning, and then the catalyst carrier is blown dry, that is, the surface of the catalyst carrier is joined to form the first layer of nano metal particles;

Step 5. The surface of the catalyst carrier is then joined with multiple layers of nano metal particles: The catalyst carrier with the first layer of metal nano particles on the surface is immersed in a methanol solution containing 3-25% lauryl amino alcohol. Modification, take out the modified catalyst carrier with the first layer of nano metal particles to dry, and then soak it in the prepared aqueous nano metal particle solution, let it stand for 1 to 3 hours, then take out the bonded The catalyst carrier with the first layer of nano metal particles is cleaned with a cleaning solution, and then the catalyst carrier with the first layer of nano metal particles is dried to complete the first layer of nano metal particles. The surface of the catalyst carrier is joined to form a second layer of nano metal particles.

Further, step 5 can be repeated, so that the catalyst carrier with the second layer of nano metal particles can have multiple layers of nano metal particles formed on its surface.

Furthermore, the water-phase nano metal particle solution in step 3 and step 5 can be made of the same metal particle material, so that the material of each layer of the catalyst carrier is the same.

Further, the water-phase nano metal particle solution in step 3 and step 5 may be made of different metal particle materials, so that the material of each layer of nano metal particles of the catalyst carrier is different.

Furthermore, the water-phase nano metal particle solution in step 3 and step 5 may be partly of the same metal particle material, so that the material of each layer of the catalyst carrier can be partly the same or partly different.

Further, the catalyst reactant completed in step 5 is used to be set on a placing tray, the placing tray is provided with a plurality of holding grooves arranged at equal intervals, and at least one through hole is provided around the holding groove. The through hole is communicated with the holding groove, so that the catalyst reactant forms an evenly spaced arrangement on the placing plate.

Further, the oxide in step 1 may be any one or a combination of silicon dioxide, aluminum oxide, titanium dioxide, zirconium dioxide, silicon carbide, and aluminum nitride.

Further, the silyl compound in step 3 may be any one of 3-aminopropyltriethoxysilane, trimethoxysilane, or dimethoxy-ethylsilane.

Further, the cleaning solution can be one of ionized water or alcohol.

Further, the drying procedure in step 3 is to put the catalyst carrier after the cleaning has been completed into an oven at 80°C to 90°C for 20 to 40 minutes, then take it out and place it at room temperature for cooling, and the refrigeration procedure is to be completed The catalyst carrier in the drying process is placed in a test tube filled with nitrogen and placed in a refrigerator for refrigeration.

Further, the drying procedure in step 5 is to place the catalyst carrier with the first layer of nano metal particles in a test tube and place it in an oven at 80°C to 90°C for drying.

Beneficial effect

The technical feature of the present invention is to use a methanol solution containing dodecylamino alcohol to modify the catalyst carrier that has the first layer of nano metal particles; then, it is immersed in an aqueous phase of the same or different metal materials. In the nano metal particle solution, the surface of the catalyst carrier that has the first layer of nano metal particles is joined to form a second layer of nano metal particles. This step can be repeated to make the catalyst carrier with the first layer of nano metal particles The surface of the catalyst carrier can be formed with multiple layers of single-component (or multiple composite components) nano-metal particles to reach a catalyst reactant with multiple layers of nano-metal particles. The interface metal between the particles (that is, the supporting force) Effect) to improve the catalytic activity of the fuel combustion reaction, so that the catalyst reactant can have a lower ignition temperature and high oxidation efficiency, and greatly improve its thermal reaction efficiency.

Description of the drawings

The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

Fig. 1: A flow chart of the method for preparing the catalyst reactant with high efficiency catalysis of thermal reaction according to the present invention.

Figure 2: A cross-sectional schematic diagram of a catalyst-catalyzed gas phase reaction system of the present invention.

Figure 3: The enlarged schematic diagram of the circle A in Figure 2 of the present invention.

Description of Reference Signs

1. Catalyst reactant

2. Catalyst catalyzed gas phase reaction system

21. Reactor

22. Heater

23. Fuel barrels

231. Fuel Pipe

232、Atomizer

3. Place the plate

31, holding trough

32. Through holes.

The best mode of the present invention

In order to make it more convenient and simple to understand the other features and advantages of the present invention and the effects achieved by it, the present invention will now be combined with the accompanying drawings to describe the features and advantages of the present invention in detail. The following embodiments are further described in detail. The viewpoint of the present invention does not limit the scope of the present invention by any viewpoint.

Please refer to Figure 1, Figure 2 and Figure 3, the present invention discloses a method for making a catalyst reactant with high efficiency catalysis of thermal reaction. The catalyst reactant 1 is especially applied to a catalyst catalyzed gas phase reaction system 2 , In order to improve the catalytic activity of the fuel combustion reaction of the catalyst-catalyzed gas-phase reaction system 2, and the preparation method of the catalyst reactant 1 includes:

Step 1: Preparation of catalyst carrier: At least one oxide is made into a catalyst powder, and then the catalyst powder is granulated to form a three-dimensional shape (such as a sphere, a cylinder, a cube or a rectangular parallelepiped and other three-dimensional shapes) Catalyst carrier. The oxide can be any one or more combination (composite) oxides such as silicon dioxide, aluminum oxide, titanium dioxide, zirconium dioxide, silicon carbide, aluminum nitride and the like.

Step 2: Prepare at least one water-phase nano metal particle solution. The nano metal particle material of the water-phase nano metal particle solution can be other metal materials such as gold, silver, palladium, rhodium, ruthenium or iridium; in addition, The step 2 can prepare two or more aqueous nanometal particle solutions of different nanometal materials.

Step 3: Surface modification of the catalyst carrier: The catalyst carrier of step 1 is soaked in methanol solution containing 1-15% silanyl compound, and after standing for 1 to 3 hours, the catalyst carrier is taken out and cleaned with a cleaning solution, and then The catalyst carrier undergoes a drying process and is sent to a refrigeration process. The silyl compound may be 3-aminopropyltriethoxysilane (3-Aminopropyl)trimethoxysilane, APTMS for short), (3-thiopropyl)trimethoxysilane (3-Mercaptopropyl)trimethoxysilane, MPTMS for short) or (3-thiomethyl)dimethoxy-ethyl silane (mercaptomethyl-dimethylethoxy silane , MMDMES for short). The cleaning solution may be ionized water or alcohol. The drying procedure is to put the cleaned catalyst carrier into an oven at 80°C to 90°C for 20 to 40 minutes, and then take it out to cool at room temperature. In the refrigerating procedure, the catalyst carrier that has completed the drying procedure is placed in a test tube filled with nitrogen and placed in a refrigerator for refrigeration.

Step 4: Join the first layer of nano metal particles on the surface of the catalyst carrier: soak the modified catalyst carrier in the aqueous nano metal particle solution prepared in step 2, and let it stand for 1 to 3 hours, then take out the catalyst carrier It is cleaned with a cleaning solution, and then the catalyst carrier is blow-dried. That is, the surface of the catalyst carrier is joined to form the first layer of nano metal particles. The cleaning solution may be ionized water or alcohol. The cleaned catalyst carrier can be dried by nitrogen.

Step 5: The surface of the catalyst carrier is then joined with multiple layers of nano metal particles: The surface of the catalyst carrier with the first layer of nano metal particles is immersed in the catalyst carrier containing 3~25% dodecaneamino alcohol (1,12-dodecaneamino). , Abbreviated as 1,12 DDCA) in methanol solution for modification, take out the modified catalyst carrier bonded with the first layer of nano metal particles for drying process, and then soak in the water phase nano metal particles prepared in step 2. After standing for 1 to 3 hours in the solution, take out the catalyst carrier with the first layer of nano metal particles attached and wash it with a cleaning solution, and then blow the catalyst carrier with the first layer of nano metal particles attached Dry, that is, the catalyst carrier with the first layer of nano metal particles is completed, and the surface of the catalyst carrier is joined to form the second layer of nano metal particles. The drying procedure of the step 5 is to place the catalyst carrier with the first layer of nano metal particles in a test tube and put it in an oven at 80°C to 90°C for drying. The cleaning solution may be ionized water or alcohol. The cleaned catalyst carrier can be dried by nitrogen.

In addition, the present invention can repeat step 5, so that the catalyst carrier that has a second layer of nano metal particles can have multiple layers (such as the third layer, the fourth layer, and so on) formed on the surface of the catalyst carrier; in addition, , The aqueous nano metal particle solution in step 3 and step 5 can be the same metal particle material or different metal particle material, so that the material of each layer of the catalyst carrier can be the same, Some of the same or all of them are different, so that the surface of the catalyst carrier with the first layer of nano-metal particles can be formed with multiple layers of single-component (or multiple-component) nano-metal particles. For example, the material of the first layer and the second layer (or multiple layers) of the catalyst carrier can be nano-gold particles; the material of the first layer of the catalyst carrier can be nano-metal particles. The material of the rice gold particles, and the second layer (or other layer) of the nano metal particles can be nano platinum particles; the material of the first layer of the catalyst carrier can be nano metal particles. Particles, and the material of the second layer of nano metal particles can be nano platinum particles, and the material of other layers of nano metal particles can be nano silver particles (or nano metal particles of other materials).

The catalyst reactant 1 that has completed step 5 can be set on a placing tray 3, and the placing tray 3 is provided with a plurality of holding grooves 31 arranged at equal intervals, and each holding groove 31 is provided with at least A through hole 32, the through hole 32 is formed in communication with the receiving groove 31; in this way, the multi-catalyst reactant 1 can be respectively arranged in the receiving groove 31 of the placing plate 3, so that the plurality of catalyst reactants 1 are arranged at equal intervals form.

The placing tray 3 can be set in the reaction furnace 21 provided in the catalytic gas phase reaction system 2. The heater 22 provided in the reaction furnace 21 first heats the catalyst reactant 1 and when the catalyst reactant 1 reaches one When the temperature is preset, the heater 22 can be turned off; at this time, the fuel inside the fuel tank 23 (may be other fuels such as methanol, ethanol, isopropanol, or methane) passes through the fuel pipe 231, the atomizer 232, and The atomizer 232 atomizes and sprays the fuel in the reactor 21, so that the fuel sprayed from the atomizer 232 can pass through the through hole 32 of each receiving groove 31, so that the fuel can be evenly distributed in each The catalyst reactant 1 enables a plurality of catalyst reactants 1 to react with the fuel to form a better and continuous thermal reaction.

Therefore, the technical feature of the present invention is to use a methanol solution containing 1,12-dodecaneamino (1,12 DDCA for short) to modify the catalyst carrier that has the first layer of nano metal particles. Afterwards, it is immersed in an aqueous nano-metal particle solution of the same or different metal materials, so that the surface of the catalyst carrier with the first layer of nano-metal particles is joined to form a second layer of nano-metal particles; Repeat this step so that the catalyst carrier with the first layer of nano metal particles can have multiple layers of single component (or multiple and multiple composite components) nano metal particles formed on the surface; reaching a catalyst with multiple layers of nano metal particles The reactant can use the interface metal between the particles (ie, the supporting force effect) to enhance the catalytic activity of the fuel combustion reaction, so that the catalyst reactant can have a lower ignition temperature and high oxidation efficiency; at the same time, it can use a variety of The catalyst reactant 1 of nano metal particles can have better thermal reaction catalyst performance, and the catalyst reactant 1 with a variety of nano metal particles has better thermal stability than the reactant of single nano metal particles. And thermal reaction efficiency.

Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

Claims (11)

A method for manufacturing a catalyst reactant with high-efficiency catalysis of thermal reaction. The catalyst reactant refers to a catalyst-catalyzed gas-phase reaction system used as a catalytically active substance for enhancing the fuel combustion reaction of the catalyst-catalyzed gas-phase reaction system. The preparation method of the catalyst reactant includes: Step 1. Preparation of catalyst carrier: At least one oxide is made into a catalyst powder, and then the catalyst powder is granulated to form a three-dimensional catalyst carrier; "Step 2. Prepare at least one aqueous nanometal particle solution; Step 3. Surface modification of the catalyst carrier: the catalyst carrier is immersed in a methanol solution containing 1-15% silyl compound, and after standing for 1 to 3 hours, the catalyst carrier is taken out and cleaned with a cleaning solution, and then the catalyst carrier The catalyst carrier undergoes the drying process and sends it to the refrigeration process; Step 4. Join the first layer of nano metal particles on the surface of the catalyst carrier: soak the catalyst carrier whose surface has been modified in the prepared aqueous nano metal particle solution, and then let it stand for 1 to 3 hours before taking out the catalyst. The carrier is cleaned with the cleaning solution, and then the catalyst carrier is blow-dried to complete the surface bonding of the catalyst carrier to form a first layer of nano metal particles; Step 5. The surface of the catalyst carrier is then joined with multiple layers of nano metal particles: The catalyst carrier with the first layer of metal nano particles on the surface is immersed in a methanol solution containing 3-25% lauryl amino alcohol. After modification, the modified catalyst carrier with the first layer of nano metal particles is taken out and subjected to a drying process, and then immersed in the prepared aqueous nano metal particle solution to stand for 1 to 3 hours. Take out the catalyst carrier with the first layer of nano metal particles and wash it with the cleaning solution, and then dry the catalyst carrier with the first layer of nano metal particles to complete the first layer of metal nano particles. The surface of the catalyst carrier with a layer of nano metal particles is joined to form a second layer of nano metal particles. The method for manufacturing a catalyst reactant with high-efficiency catalysis of thermal reaction according to claim 1, wherein step 5 can be repeated, so that the catalyst carrier with the second layer of nano metal particles can be formed on the surface of the catalyst carrier Multi-layer nano metal particles. The method for producing a catalyst reactant with high-efficiency catalysis of thermal reaction according to claim 1 or 2, wherein the aqueous nano-metal particle solution in step 3 and step 5 can be made of the same metal particle material. The catalyst carrier has the same material for each layer of nano metal particles. The method for producing a catalyst reactant with high-efficiency catalysis of thermal reaction according to claim 1 or 2, wherein the aqueous nanometal particle solution in step 3 and step 5 can be made of different metal particle materials. The material of each layer of nano metal particles of the catalyst carrier is different. 2. The method for producing a catalyst reactant with high-efficiency catalysis of thermal reaction according to claim 2, wherein the aqueous nano-metal particle solution in step 3 and step 5 may be part of the same metal particle material, so that the The material of each layer of nano-metal particles of the catalyst carrier can be partly the same or partly different. The method for manufacturing a catalytic reactant with high-efficiency catalysis of thermal reaction according to claim 1 or 2, wherein the catalytic reactant completed in step 5 is used to be set on a placing plate, and the placing plate is provided with a plurality of A holding groove arranged at equal intervals, the holding groove is provided with at least one through hole around the holding groove, and the through hole is communicated with the holding groove, so that the catalyst reactant forms an equally spaced arrangement form on the placing plate . The method for producing a catalyst reactant with high-efficiency catalysis of thermal reaction according to claim 1 or 2, wherein the oxide in step 1 can be silicon dioxide, aluminum oxide, titanium dioxide, or zirconium dioxide. , Silicon carbide, aluminum nitride, any one or a combination of more. The method for producing a catalyst reactant with high-efficiency catalysis of thermal reaction according to claim 1 or 2, wherein the silyl compound in step 3 can be 3-aminopropyltriethoxysilane, trimethoxysilane Either silane or dimethoxy-ethyl silane. The method for producing a catalyst reactant with high-efficiency catalysis of thermal reaction according to claim 1 or 2, wherein the cleaning solution can be one of ionized water or alcohol. The method for producing a catalytic reactant with high-efficiency catalysis of thermal reaction according to claim 1 or 2, characterized in that the drying procedure of step 3 is to put the cleaned catalyst carrier into 80°C~90°C. After 20-40 minutes in an oven at ℃, take it out and place it at room temperature to cool, and the refrigeration procedure is to put the catalyst carrier that has completed the drying procedure into a test tube filled with nitrogen and place it in a refrigerator for refrigeration. The method of manufacturing a catalyst reactant with high-efficiency catalysis of thermal reaction according to claim 1 or 2, wherein the drying procedure in step 5 is to place the catalyst carrier bonded with the first layer of nano metal particles Put it in a test tube and put it in an 80℃~90℃ oven for drying.