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Au/Fe2O3 CATALYST MATERIALS, METHOD FOR THE PRODUCTION THEREOF AND THEIR USE
Au/Fe2O3 CATALYST MATERIALS, METHOD FOR THE PRODUCTION THEREOF AND THEIR USE
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机译：Au / Fe2O3催化剂材料，其生产方法及其用途
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摘要
The invention relates to an Au/Fe2O3 catalyst material comprised of a particle-shaped, co-catalytically active Fe2O3 supporting material with metallic Au clusters deposited thereupon which have a diameter of less than 4.5 nm. The catalyst materials can be obtained by: a) reacting a water-soluble Fe(III) salt in an aqueous medium with a base; b) impregnating the hydroxide gel which is formed thereby and which is still moist with a solution of a water-soluble Au compound in order to deposit complexed Au clusters on the surface of the hydroxide gel; c) removing water from the suspension of the reaction product formed thereby; d) subjecting the dried reaction product to a calcination at temperatures ranging from 350 to 700 DEG C. The inventive catalyst material is especially suited for selective low-temperature CO oxidation in reformate hydrogen which is used as combustible gas for polymer electrolyte membrane (PEM) fuel cells.
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机译：本发明涉及一种Au / Fe 2 O 3催化剂材料，其由颗粒形状的，具有共同催化活性的Fe 2 O 3载体材料和沉积在其上的直径小于4.5nm的金属Au簇组成。可以通过以下方法获得催化剂材料：a）使水溶性Fe（III）盐在水性介质中与碱反应; b）浸渍由此形成的并且仍然用水溶性Au化合物溶液润湿的氢氧化物凝胶，以便在氢氧化物凝胶的表面上沉积络合的Au簇; c）从由此形成的反应产物的悬浮液中除去水; d）使干燥的反应产物在350-700℃的温度下进行煅烧。本发明的催化剂材料特别适用于重整氢中的选择性低温CO氧化，所述重整氢用作聚合物电解质膜（PEM）的可燃气体。燃料电池。
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