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1. 发明申请

WO1997012673A1 PROCESS FOR PREPARING A HYDROGENATION CATALYST 审中-公开
标题翻译：用于生产加氢催化剂
公开(公告)号：WO1997012673A1
公开(公告)日：1997-04-10
申请号：PCT/EP1996004203
申请日：1996-09-26
申请人： BASF AKTIENGESELLSCHAFT , HEINEKE, Daniel , RIEKER, Christopher, William , OOSTVOGELS, Jozef , POSTELMANS, Dany , SCHNEIDER, Heinz-Walter , THOME, Alfred , ACHHAMMER, Günther
发明人： BASF AKTIENGESELLSCHAFT
IPC分类号： B01J23/42
CPC分类号： B01J23/42 , B01J23/96 , B01J37/16 , C01B21/1418 , Y02P20/584
摘要： The invention relates to a hydrogenation catalyst by the reduction from platinum in the stage of oxidation of +4 (Pt (IV)) with a selective reducing agent in an acidic aqueous medium in the presence of a carbon-containing carrier to platinum in the stage of oxidation +2 (Pt (II)), subsequent poisoning of the platinum thus obtained with a sulphur-containing selective reducing agent, and subsequent reduction of the platinum thus partially poisoned to form metallic platinum (Pt(0)) and subsequent processing as known per se in that (a) Pt (II) is partially poisoned with a sulphur-containing selective reducing agent, wherein the sulphur-containing selective reduction agent is used in an amount which corresponds to from 15 to 70 mol % of the amount of the sulphur-containing selective reducing agent which might be needed to reduce Pt(IV) to Pt (II), provided that the amount of Pt (IV) corresponds to the amount of Pt (II) used and to be poisoned, and subsequently the partially poisoned Pt (II) is reduced with an alkali metal formate to Pt (0); or (b) platinum in the stage of oxidation of greater than +2 is partially poisoned and subsequently or simultaneously reduced with an alkali metal formate to Pt (0). The invention also relates to a hydrogenation catalyst, use of the hydrogenation catalyst for preparing hydroxylammonium salts, a process for the preparation of hydroxylammonium salts, and a process for regenerating platinum-containing hydrogenation catalysts.
摘要翻译：通过在的氧化态还原铂的制备氢化催化剂4（铂（IV）），与在碳质载体的存在下，铂的氧化态+2（铂（II））的酸性水性介质中的选择性还原剂，随后中毒如此所得载铂用选择性还原剂，之后减少从而部分中毒铂成金属铂含硫铂（Pt（0）），并且向其中随后以常规方式后处理通过（a）铂（II）与含硫选择性还原剂反应部分中毒，被使用，在其对应于从15到70％（摩尔），将在顺序的Pt（IV），以铂（II），以减少所需要的选择性还原剂含硫的量的，提供的量的含硫选择性还原剂的Pt的量（IV）对应于到，插入的Pt（II）的中毒的量，然后将部分中毒的Pt（II）与碱金属与Pt减少（0），或（b）铂在大于2部分中毒和随后或同时用碱金属降低到的Pt（0）以及氢化催化剂的氧化状态，使用氢化催化剂对于羟铵盐的制备，处理用于羟铵盐的制备和用于再生铂的氢化催化剂的方法。

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