公开(公告)号：US5620584A

公开(公告)日：1997-04-15

申请号：US401750

申请日：1995-03-09

申请人： Manfred T. Reetz ,  Wolfgang Helbig ,  Stefan A. Quaiser

发明人： Manfred T. Reetz ,  Wolfgang Helbig ,  Stefan A. Quaiser

IPC分类号： B01J13/00 ,  B01J23/44 ,  B01J23/46 ,  B01J35/00 ,  B01J37/16 ,  B22F9/00 ,  B22F9/24 ,  C25B1/00 ,  C25C5/02 ,  C25C1/00 ,  C25C1/06 ,  C25C1/12 ,  C25C1/14

CPC分类号： B01J37/16 ,  B01J23/44 ,  B01J23/462 ,  B01J35/0013 ,  C25C5/02 ,  Y10T428/256 ,  Y10T428/259 ,  Y10T428/2982 ,  Y10T428/2991

摘要： The object of the invention is a method for the electrochemical preparation of metal colloids with particle sizes of less than 30 nm, characterized in that one or more salts of one or more metals of groups Ib, IIb, III, IV, V, VI, VIIb, VIII, lanthanoides, and/or actinoides of the periodic table are cathodically reduced in the presence of a stabilizer, optionally with a supporting electrolyte being added, in organic solvents or in solvent mixtures of organic solvents and/or water within a temperature range of between -78.degree. C. and +120.degree. C. to form metal colloidal solutions or redispersible metal colloid powders, optionally in the presence of inert substrates and/or soluble metal salts of the respective metals. The invention further relates to soluble or redispersible colloids as well as application on substrates and immobilization thereof, in particular for the preparation of catalysts.

摘要翻译： 本发明的目的是一种电化学制备粒径小于30nm的金属胶体的方法，其特征在于一种或多种Ib，IIb，III，IV，V，VI， 在有机溶剂或有机溶剂和/或水的溶剂混合物的温度范围内，在稳定剂存在下，任选地加入支持电解质，将元素周期表的VIIb，VIII，镧系元素和/或锕系元素阴极还原 在-78℃至+ 120℃之间，任选地在各自金属的惰性底物和/或可溶性金属盐的存在下形成金属胶体溶液或可再分散的金属胶体粉末。 本发明还涉及可溶性或可再分散的胶体以及在底物上的应用和其固定，特别是用于制备催化剂。