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Preparation of supported nano-sized catalyst particles via a polyol process
Preparation of supported nano-sized catalyst particles via a polyol process
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机译:通过多元醇法制备负载型纳米催化剂颗粒
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摘要
High activity, supported, nanosized metallic catalysts for methanol reformation and methods of fabricating such catalysts are disclosed. In one embodiment, soluble metal species are dissolved in a polyhydroxylic alcohol (polyol) solution. Platinum and ruthenium are preferred metal species. Other soluble metal species can be used, such as soluble Group 6, 7 and 8 metals. The polyol solvent is preferably a viscous alcohol, such as a diol, triol, or tetraol, to minimize particle diffusion and inhibit particle growth. The polyol solution is heated to reduce the metal(s) to a zero valent state. Typically, the heating temperature will range from 20 C. to 300 C., and the heating period will range from 1 minute to 5 hours. A high surface area conductive support material can be mixed with the polyol solution to form the supported catalysts in situ. Activated carbon, metals, and metal oxides, having a surface area from 20 to 2000 m2/g, are typical support materials.
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机译:公开了用于甲醇重整的高活性,负载的纳米级金属催化剂及其制备方法。在一实施方案中,将可溶性金属物质溶解在多羟基醇(多元醇)溶液中。铂和钌是优选的金属种类。可以使用其他可溶性金属种类,例如可溶性6、7和8族金属。多元醇溶剂优选是粘性醇,例如二醇,三醇或四醇,以最小化颗粒扩散并抑制颗粒生长。加热多元醇溶液以将一种或多种金属还原为零价态。通常,加热温度为20℃至300℃,加热时间为1分钟至5小时。可将高表面积的导电载体材料与多元醇溶液混合以原位形成载体催化剂。典型的载体材料是表面积为20至2000 m 2 Sup> / g的活性炭,金属和金属氧化物。
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