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CN103113412A 一种不含氯和硝酸根的水溶性Pt(II)催化前驱体及其合成方法 无效 - 撤回

一种不含氯和硝酸根的水溶性Pt(II)催化前驱体及其合成方法
摘要：
一种不含氯和硝酸根的水溶性Pt(II)催化前驱体及其合成方法。本发明公开了一种用于制备负载型铂催化剂的前驱体化合物——醋酸四氨合铂。其分子式为[Pt(NH3)4](CH3COO)2·nH2O，n=0, 1。该化合物的制备是以二氯四氨合铂为起始原料，通过和醋酸银反应得到目标化合物醋酸四氨合铂，产率＞95％。该化合物作为前驱体具有以下特点：（1）不含对催化有害的氯、硫、磷等元素；（2）具有很高的水溶性，水中溶解度高达80g/100g，可以作为高负载铂催化剂的前驱体；（3）在水溶液中该化合物发生解离反应，释放出稳定的配阳离子[Pt(NH3)4]2+，有利于浸渍时载体吸附前驱体化合物。（4）在300℃时该化合物发生自身氧化还原发应，直接生成金属铂，并不产生对环境有害的气体，是浸渍法负载型催化剂的理想前驱体。
摘要（英）：

The invention relates to a water soluble Pt(II) catalyst precursor free from chlorine and nitrate and a synthetic method thereof. The invention discloses a precursor compound: tetraammineplatinumdiacetate for preparing a supported platinum catalyst, wherein the molecular formula is [Pt(NH3)4](CH3COO)2.nH2O, n=0, 1. The compound is prepared by the step of performing reaction of tetraammineplatinum chloride hydrate as a starting raw material and silver acetate to obtain the target compound tetraammineplatinumdiacetate. The yield is greater than 95%. The compound as the precursor has the characteristics that (1) the compound is free from elements such as chlorine, sulphur and phosphorus harmful to catalysis; (2) the compound is quite high in water solubility and can be used as a the precursor of the highly supported platinum catalyst with the solubility in water reaching 80g/100g; (3) the compound in aqueous liquor is dissociated to release stable complex cations [Pt(NH3)4]2+ to the benefit of absorbing the precursor compound by a carrier in impregnation; and (4) own redox reaction of the compound occurs at 300 DEG C to directly generate platinum without gases harmful to the environment. The precursor is an ideal precursor for the supported catalyst by an impregnation method.

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