TW200613048A - Preparation of ceria-supported nano-gold catalysts and its application in co removal in gas - Google Patents
Preparation of ceria-supported nano-gold catalysts and its application in co removal in gasInfo
- Publication number
- TW200613048A TW200613048A TW093132153A TW93132153A TW200613048A TW 200613048 A TW200613048 A TW 200613048A TW 093132153 A TW093132153 A TW 093132153A TW 93132153 A TW93132153 A TW 93132153A TW 200613048 A TW200613048 A TW 200613048A
- Authority
- TW
- Taiwan
- Prior art keywords
- ceria
- precipitation
- supported nano
- gold
- removal
- Prior art date
Links
Abstract
This invention declares the process of carbon monoxide oxidation with air to form carbon dioxide at low temperature using ceria-supported nano gold catalysts. Ceria is prepared by precipitation process using cerium nitrate as the precursor and ammonia water as the precipitating agent. The precipitation medium is controlled at pH value between 8 and 1 2. The feed rate of cerium nitrate solution is 10 cc/min. The precipitate is calcined between 120-400 DEG C. The surface area of ceria is between 40-110m<SP>2</SP>/g, and the particle size is about 20 nm. Nanosized gold catalyst is prepared by deposition-precipitation using HAuCl4 as the precursor and ammonia water as the precipitating agent, at pH value between 7 and 9, temperature between 60 and 70 DEG C. The sample is calcined between 150 and 200 DEG C. Gold species is in metallic state. The reaction of CO oxidation is at room temperature with less than 50,000 h-1 space velocity. CO can be removed down to < 1 ppm.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW93132153A TWI263538B (en) | 2004-10-21 | 2004-10-21 | Preparation of ceria-supported nano-gold catalysts and its application in CO removal in gas |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW93132153A TWI263538B (en) | 2004-10-21 | 2004-10-21 | Preparation of ceria-supported nano-gold catalysts and its application in CO removal in gas |
Publications (2)
Publication Number | Publication Date |
---|---|
TW200613048A true TW200613048A (en) | 2006-05-01 |
TWI263538B TWI263538B (en) | 2006-10-11 |
Family
ID=37967073
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW93132153A TWI263538B (en) | 2004-10-21 | 2004-10-21 | Preparation of ceria-supported nano-gold catalysts and its application in CO removal in gas |
Country Status (1)
Country | Link |
---|---|
TW (1) | TWI263538B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8987166B2 (en) | 2012-01-13 | 2015-03-24 | National Central University | Preparation of cerium oxide-supported nano gold-silver catalysts and its application in carbon monoxide removal in air |
-
2004
- 2004-10-21 TW TW93132153A patent/TWI263538B/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8987166B2 (en) | 2012-01-13 | 2015-03-24 | National Central University | Preparation of cerium oxide-supported nano gold-silver catalysts and its application in carbon monoxide removal in air |
Also Published As
Publication number | Publication date |
---|---|
TWI263538B (en) | 2006-10-11 |
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Legal Events
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MM4A | Annulment or lapse of patent due to non-payment of fees |