高分子保护金属铜胶体催化剂的制备  

Preparation of Polymer Supported Copper Colloidal Catalysts

作　　者：夏树伟[1] 高林娜[1] 

机构地区：[1]中国海洋大学化学化工学院,山东青岛266003

出　　处：《中国海洋大学学报（自然科学版）》2006年第1期131-134,130,共5页Periodical of Ocean University of China

基　　金：国家自然科学青年基金项目(20203011)资助

摘　　要：研究了无氮气保护下胶体铜催化剂的制备方法和反应条件,在聚乙烯吡咯烷酮(PVP)保护下,用水合肼还原CuCl2,在80℃和pH=7.0±0.5条件下,可制得比较稳定的胶体铜溶液。改变PVP的分子量或PVP/Cu2+的摩尔比,可制得不同粒度的金属胶体铜。保护剂PVP的分子量越小,PVP/Cu2+的摩尔比越大,所得胶体铜粒径越小。用所得的胶体铜催化丙烯腈水合制备丙烯酰胺具有很高的活性。This paper studies the methods and reaction conditions for the preparation of colloidal copper catalysts without N2 protection. In the presence of stabilizer Poly（N-Vinyl-2-Pyrrolidone）（PVP）, copper chloride solution is reduced by hydrazine hydrate at 80℃ and with pH = 7.0 ± 0.5, which can prepare stable colloidal copper. Changing the molecular weight of the PVP or the molar ratio of PVP to Cu^2＋, we can obtain stable colloidal copper with different sizes. The lighter the molecular weight of PVP and the higher the molar ratio of PVP to Cu^2＋, the smaller the size of colloidal copper. The colloidal copper is a highly active catalyst for the hydration of acrylonitrile to produce acrylamide.

关 键 词：胶体铜 催化剂 聚乙烯吡咯烷酮 水合肼 

分 类 号：O642.59[理学—物理化学]