Nanometer powder catalyst and its preparation method
AssigneeOcean University of China
InventorsHaibo Xu, Yonghong Lu, Jia Wang, Renxing Sun
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Abstract
A TiO2-containing composite nano-powder catalyst obtained by combining a titanium-based metal ceramic compound in powder form with a mixing solution containing compound(s) of a platinum group metal and/or a non-noble metal, drying the resulting mixture, and then performing oxidative thermal decomposition on the dried mixture. This catalyst also can be used as a support to further support platinum group metal(s) and/or non-noble metal(s) to obtain another composite nano-powder catalyst. A method for preparing a TiO2-containing composite nano-powder catalyst is also disclosed.
Claims18
A TiO2-containing composite nano-powder catalyst obtained by:
- impregnating a powder comprising a titanium-based metal ceramic compound with a mixing solution that contains a compound comprising a platinum group metal and/or a non-noble metal, thereby creating a mixture, wherein the titanium-based metal ceramic compound has a particle size of between 1 nanometer and 100 nanometers;
- drying the mixture;
- and then
- performing an oxidative thermal decomposition.
A method of preparing a TiO2-containing composite nano-powder catalyst, comprising:
- preparing a precursor reaction solution containing a compound comprising a platinum group metal and/or a non-noble metal;
- mixing a titanium-based metal ceramic compound powder into the precursor reaction solution, wherein the titanium-based metal ceramic compound has a particle size of between 1 nanometer and 100 nanometers, thereby forming liquid mixture;
- drying the liquid mixture and then decomposing it under oxidative thermal conditions, thereby forming a decomposed mixture;
- and
- cooling and grinding the decomposed mixture to obtain the catalyst powder.
Dependencies are inferred from the claim text.