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公开(公告)号:US4652537A
公开(公告)日:1987-03-24
申请号:US791393
申请日:1985-10-25
CPC分类号: B01J23/42 , B01D53/864 , B01J31/123
摘要: There is provided a process for producing a catalyst to convert carbon monoxide in a gas into carbon dioxide. The process comprises causing activated carbon to absorb an aqueous solution of chloroplatinic acid, reducing the absorbed chloroplatinic acid to platinum with a reducing agent, and decomposing an excess of the reducing agent with hydrogen peroxide. The catalyst contains at least 6 mg of platinum per gram of activated carbon.
摘要翻译: 提供了一种用于生产将气体中的一氧化碳转化成二氧化碳的催化剂的方法。 该方法包括使活性炭吸收氯铂酸水溶液,用还原剂将吸收的氯铂酸还原成铂,并用过氧化氢分解过量的还原剂。 该催化剂含有至少6mg铂/克活性炭。
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公开(公告)号:US4097576A
公开(公告)日:1978-06-27
申请号:US663833
申请日:1976-03-04
申请人: Takaaki Tamura , Norihiko Fujita , Chihiro Matsuura , Wataru Ito , Naoki Negishi
发明人: Takaaki Tamura , Norihiko Fujita , Chihiro Matsuura , Wataru Ito , Naoki Negishi
CPC分类号: B01J29/78 , B01D53/8628 , B01J29/26
摘要: A reduction catalyst is disclosed. This catalyst comprises a naturally-occurring inorganic material which is a tuff consisting essentially of SiO.sub.2, Al.sub.2 O.sub.3 and H.sub.2 O containing 1-10% by weight of an alkali metal oxide and an alkaline earth metal oxide and has an X-ray diffraction pattern as shown in Table A or Table B. It is produced by depositing of the tuff metal ions selected from the group consisting of a metal belonging to Ib Group, IIb Group and VIII Group of Periodic Table, chromium, vanadium and manganese, followed by heat treatment, and repeating the same using different metal ions on each occasion. The catalyst is useful as a reduction catalyst for nitrogen oxides.
摘要翻译: 公开了还原催化剂。 该催化剂包括天然存在的无机材料,其为基本上由SiO 2,Al 2 O 3和H 2 O组成的凝灰岩,其含有1-10重量%的碱金属氧化物和碱土金属氧化物,并具有X射线衍射图,如 表A或表B.通过沉积选自属于Ib组,IIb族和VIII族周期表的金属的凝灰岩金属离子,铬,钒和锰,然后进行热处理而制备,以及 在每种情况下重复使用不同的金属离子。 催化剂可用作氮氧化物的还原催化剂。
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