Manufacture of nickel boride colloid

Abstract

Abstract PURPOSE:To obtain nickel boride colloid showing high activity in the hydrogenation of carbonyl group by treating an Ni salt with an alkali metal borohydride in an alcohol in the presence of an alcohol soluble polymer and adding a basic substance. CONSTITUTION:An Ni salt such as NiCl2.6H2O and an alcohol soluble polymer such as polyvinylpyrrolidone are dissolved in an alcohol such as ethanol deoxidized under a nonoxidizing atmosphere, and an alcoholic soln. of an alkali metal borohydride such as sodium borohydride is dropped. An alcoholic soln. of a basic substance such as NaOH or a solid basic substance is then added, and the mixed soln. is agitated to obtain dark brown uniform nickel boride colloid. Using this colloid as a catalyst the hydrogenation reaction of aldehydes, ketones, etc. proceeds rapidly at ordinary temp. and ordinary pressure.

Inventors

• 👤 Yukimichi Nakao
• 👤 Norinaga Fujishige

Bibliographic Details