KR101816706B1 - 다공성 산화물 촉매 및 그의 제조방법 - Google Patents
다공성 산화물 촉매 및 그의 제조방법 Download PDFInfo
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Abstract
상기 다공성 산화물 촉매는 다공성 산화물의 골격 내에 이종금속이 삽입 및/또는 치환됨으로써 VOCs의 개선된 산화분해효율을 나타낸다.
Description
도 1b는 산소결함유도금속과 산소원자가 결합된 모식도를 나타낸다.
도 1c는 격자금속과 산소원자가 결합된 모식도를 나타낸다.도 2는 일구현예에 따른 다공성 산화물 촉매의 VOC 산화분해반응을 나타내는 개략도이다.
도 3은 실시예 1, 실시예 2 및 비교예 1에서 얻어진 다공성 산화물 촉매의 XRD 결과를 나타내는 그래프이다.
도 4는 실시예 4 및 비교예 2에서 얻어진 다공성 산화물 촉매의 XRD 결과를 나타내는 그래프이다.
도 5a는 실시예 1에서 얻어진 다공성 산화물 촉매의 N2 흡착 결과를 나타내는 그래프이다.
도 5b는 실시예 1에서 얻어진 다공성 산화물 촉매의 기공 크기에 따른 기공 부피를 나타내는 그래프이다.
도 6a는 실시예 2에서 얻어진 다공성 산화물 촉매의 N2 흡착 결과를 나타내는 그래프이다.
도 6b는 실시예 2에서 얻어진 다공성 산화물 촉매의 기공 크기에 따른 기공 부피를 나타내는 그래프이다.
도 7a는 실시예 4에서 얻어진 다공성 산화물 촉매의 N2 흡착 결과를 나타내는 그래프이다.
도 7b는 실시예 4에서 얻어진 다공성 산화물 촉매의 기공 크기에 따른 기공 부피를 나타내는 그래프이다.
도 8a는 비교예 1에서 얻어진 다공성 산화물 촉매의 N2 흡착 결과를 나타내는 그래프이다.
도 8b는 비교예 1에서 얻어진 다공성 산화물 촉매의 기공 크기에 따른 기공 부피를 나타내는 그래프이다.
도 9a는 비교예 2에서 얻어진 다공성 산화물 촉매의 N2 흡착 결과를 나타내는 그래프이다.
도 9b는 비교예 2에서 얻어진 다공성 산화물 촉매의 기공 크기에 따른 기공 부피를 나타내는 그래프이다.
도 10은 실시예 1, 실시예 2 및 비교예 1에서 얻어진 다공성 산화물 촉매에 포함된 금속인 Cu의 산화상태를 나타내는 XPS결과를 나타낸다.
도 11은 실시예 1, 실시예 2 및 비교예 1에서 얻어진 다공성 산화물 촉매에 포함된 금속인 Ce의 산화상태를 나타내는 XPS결과를 나타낸다.
도 12는 실시예 1, 실시예 2 및 비교예 1에서 얻어진 다공성 산화물 촉매에 포함된 금속인 Zr의 산화상태를 나타내는 XPS결과를 나타낸다.
| 구분 | 촉매 종류 | 기공크기 (nm) |
초기 농도 (ppm) |
GHSV h-1 |
T50 L |
T100 L |
| 실시예 1 | Ce0.85Cu0.05Zr0.1O1.95 | 3.7 | 70 | 24,000 | 339 | 348 |
| 실시예 2 | Cu0.05-Ce0.9Zr0.1O2 | 3.7 | 70 | 24,000 | 312 | 326 |
| 실시예 3 | Pd(1wt%)/ Ce0.85Cu0.05Zr0.1O1.95 |
3.4 ~ 7.6 | 70 | 24,000 | 292 | 300 |
| 실시예 4 | Ce0.85Cu0.05Zr0.1O1.95 | 3.7 | 70 | 24,000 | 338 | 347 |
| 비교예 1 | Ce0.9Zr0.1O2 | 3.5 ~ 6.8 | 70 | 24,000 | 412 | 420 |
Claims (20)
- 다공성 금속산화물; 및 상기 다공성 금속산화물의 골격 내에 산소 결함을 유도하는 산소결함 유도금속을 포함하는 다공성 산화물 촉매로서,
상기 다공성 금속산화물이 4족 원소, 5족 원소, 6족 원소, 8족 원소, 11족 원소, 12족 원소, 란탄족 원소, 알루미늄, 갈륨, 인듐, 탈륨, 규소, 게르마늄, 주석, 납, 인, 비소, 안티몬 및 비스무트로 이루어진 군에서 하나 이상 선택된 금속의 산화물 중 하나 이상을 포함하고,
상기 산소결함 유도금속이 Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, Zr, Nb, Ru, Rh, Pd, Ag, Cd, In, Sn, Ta, W, Ir, Pt, Au, Pb 및 Bi으로 이루어진 군으로부터 선택된 하나 이상인 것인 다공성 산화물 촉매. - 제1항에 있어서,
상기 다공성 산화물 촉매의 표면에 담지된 활성금속을 더 포함하는 다공성 산화물 촉매. - 삭제
- 제1항에 있어서,
상기 다공성 금속산화물이 TiO2, SiO2, ZnO, CexZr1-xO2 (0≤x≤1), SiO2-Al2O3, SiO2-ZrO2, Al2O3-ZrO2 및 CeO-ZrO2으로 이루어진 군으로부터 선택된 하나 이상인 것인 다공성 산화물 촉매. - 삭제
- 제2항에 있어서,
상기 활성금속이 Pt, Pd, Ru, Rh, Ni, Cu, Ag 및 Au 중 하나 이상인 것인 다공성 산화물 촉매. - 제1항에 있어서,
상기 산소결함 유도금속의 산화수가 다공성 금속산화물에 포함된 금속의 산화수보다 낮은 것인 다공성 산화물 촉매. - 제1항에 있어서,
상기 다공성 금속산화물에 포함된 금속의 산화수에 대한 산소결함 유도금속의 산화수의 비율이 1 미만의 범위인 것인 다공성 산화물 촉매. - 제2항에 있어서,
상기 활성금속의 함량이 상기 다공성 금속 산화물 100중량부에 대하여 1 내지 50중량부인 것인 다공성 산화물 촉매. - 제1항에 있어서,
상기 산소결함 유도금속의 함량이 상기 다공성 금속산화물 100중량부에 대하여 0.1 내지 20중량부인 것인 다공성 산화물 촉매. - 제1항에 있어서,
상기 산소결함 유도금속이 상기 다공성 금속산화물의 골격 내에 위치하는 것인 다공성 산화물 촉매. - 제1항에 있어서,
상기 다공성 산화물 촉매가 2 내지 50nm의 메조기공을 갖는 것인 다공성 산화물 촉매. - 제1항에 있어서,
상기 다공성 산화물 촉매가 증발유도 자기조립법 또는 공침법에 의해 제조된 것인 다공성 산화물 촉매. - 제1항, 제2항, 제4항, 제6항 내지 제13항 중 어느 한 항에 따른 다공성 산화물 촉매를 구비하는 오염물질의 제거장치.
- 제1항, 제2항, 제4항, 제6항 내지 제13항 중 어느 한 항에 따른 다공성 산화물 촉매를 구비하는 휘발성 유기화합물의 제거장치.
- 금속산화물 전구체 및 산소결함 유도금속 전구체를 용매 내에 가하여 혼합 용액을 제조하는 단계;
상기 혼합용액을 건조 및 에이징하는 단계; 및
상기 에이징 결과물을 소성하는 단계;를 포함하는 제1항에 따른 다공성 산화물 촉매의 제조방법. - 제16항에 있어서,
상기 혼합용액이 활성금속 전구체를 더 포함하는 것인 다공성 산화물 촉매의 제조방법. - 제16항에 있어서,
상기 혼합 용액이 구조 유도체를 더 포함하며,
상기 구조 유도체가 중성 계면활성제인 것인 다공성 산화물 촉매의 제조방법. - 금속산화물 전구체 및 산소결함 유도금속 전구체를 물에 가하여 수분산액을 제조하는 단계;
상기 수분산액에 염기성 수용액을 가하여 침전물을 형성하는 단계; 및
상기 침전물을 여과하여 얻어진 여과물을 소성하는 단계;를 포함하는 다공성 산화물 촉매의 제조방법. - 제19항에 있어서,
상기 수분산액이 활성금속 유도체를 더 포함하는 것인 다공성 산화물 촉매의 제조방법.
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| EP2420316A1 (en) | 2012-02-22 |
| EP2420316B1 (en) | 2020-06-24 |
| KR20110104893A (ko) | 2011-09-23 |
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