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US 7,541,012 B2Granted
Catalytic material and method of production thereof
AssigneeThe Hong Kong University of Science and Technology
InventorsKing Lun Yeung, Nan Yao, Ka Yee Ho
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Abstract
The present invention features a catalytic material which includes a metal catalyst anchored to a nano-sized crystal containing a metal oxide. Furthermore, the present invention features a method of producing the catalytic material described herein. Finally, the present invention features using the catalytic material for removing contaminants and for getting the desired products.
Claims15
A catalytic material, comprising:
- a first metal oxide and a metal catalyst,
- wherein the first metal oxide comprises nano-sized crystal particles having
- (a) size of about 4 to about 15 nm;
- (b) crystallinity greater than about 60%;
- and
- (c) a surface of hydration of about 5 to about 100 mg per gram of the dry metal oxide;
- wherein the metal catalyst comprises a transitional metal;
- and
- wherein at least about 70% of the first metal oxide comprises an anatase crystal structure.
6 more elements
A catalytic material, comprising:
- TiO2 and a metal catalyst comprising Au,
- wherein the TiO2 has
- (a) size of about 4 to about 15 nm;
- (b) crystallinity greater than about 60%;
- and
- (c) a surface of hydration of about 5 to about 100 mg per gram of the dry metal oxide;
- wherein at least about 70% of the TiO2 comprises an anatase crystal structure.
4 more elements
A catalytic material, comprising:
- a first metal oxide, a second metal oxide and a metal catalyst;
- wherein the first metal oxide comprises nano-sized crystal particles having
- (a) size of about 4 to about 15 nm;
- (b) crystallinity greater than about 60%;
- and
- (c) a surface of hydration of about 5 to about 100 mg per gram of the dry first metal oxide;
- wherein the second metal oxide is deposited onto the surface of the first metal oxide and forms monomeric or oligomeric form on the surface of the first metal oxide;
- wherein the metal catalyst comprises a transitional metal;
- and wherein at least about 60% of the second metal oxide is in monomeric form.
6 more elements
A catalytic material, comprising:
- a first metal oxide selected from the group consisting of TiO2, SiO2, Al2O3, ZrO2, and WO3, said first metal oxide having
- (a) size of about 4 to about 15 nm;
- (b) crystallinity greater than about 60%;
- and
- (c) a surface of hydration of about 5 to about 100 mg per gram of the dry first metal oxide;
- a second metal oxide selected from the group consisting of vanadium oxide, manganese oxide, chromium oxide, molybdenum oxide, and
- a metal catalyst comprising one metal selected from the group consisting of Fe, Co, Ni, Ru, Rh, Pd, Os, Ir, Pt, Au, Ag, and Cu,
- wherein the second metal oxide is deposited onto the surface of the first metal oxide and forms monomeric or oligomeric form on the surface of the first metal oxide;
- and wherein at least about 60% of the second metal oxide is in monomeric form.
6 more elements
A catalytic material, comprising:
- TiO2, V2O5, and Au, wherein the TiO2 has
- (a) size of about 4 to about 15 nm;
- (b) crystallinity greater than about 60%;
- and
- (c) a surface of hydration of about 5 to about 100 mg per gram of the dry TiO2;
- wherein the V2O5 is deposited onto the surface of the TiO2 and forms monomeric or oligomeric form on the surface of the TiO2;
- and wherein at least about 60% of the V2O5 is in monomeric form.
4 more elements
Dependencies are inferred from the claim text.