Development of Highly Efficient Catalysts for DeNO<sub><i>x</i></sub> and Alkane Dehydrogenation Based on Multimetallic Alloys

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  • FURUKAWA Shinya
    Institute for Catalysis, Hokkaido University Elements Strategy Initiative for Catalysts and Batteries, Kyoto University PRESTO, Japan Science and Technology Agency

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  • NO<sub><i>x</i></sub>還元およびアルカン脱水素に有効な多元素合金触媒の開発
  • Development of Highly Efficient Catalysts for DeNO[x] and Alkane Dehydrogenation Based on Multimetallic Alloys

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<p>Bimetallic alloys are widely used and studied as catalyst materials, but development of highly efficient catalysts using only two metal elements has limits. In this study, a series of multimetallic catalysts were developed for deNOx reactions and alkane dehydrogenation based on advanced catalyst design concepts using alloy materials. Two strategies based on pseudo-binary alloys and surface modification of intermetallic compounds were employed. Pseudo-binary alloy, in which a part of the constituent metal in a binary intermetallic compound is substituted with a third metal, allows construction of trimetallic active sites with flexibly optimized atomic ratio and catalytic characteristics. Surface modification of intermetallic compounds allows selective blocking of undesirable active sites catalyzing side reactions, and construction of a sterically hindered reaction environment for selective hydrogenation. High catalytic activity, selectivity, and stability were achieved by appropriately applying these materials and design concepts. Outstandingly high stability (almost no deactivation at 600 °C for a month) was achieved for propane dehydrogenation.</p>

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