共沉淀法制备铜钴基低碳混合醇催化剂

Coprecipitation preparation of copper-cobalt based catalysts for higher alcohol production

采用分步连续共沉淀法制备系列K改性的铜钴基催化剂,并对催化剂催化活性进行考察。结果表明,在钴铜质量比1∶1、K_2CO_3质量分数1%、pH=7.2和反应温度310℃条件下,催化剂催化活性最佳,CO转化率65.74%,液相产物中C_(2+)OH产量0.062 g·(m L·h)-1,C_(2+)OH质量分数18.95%。

A series of K modified copper - cobalt based catalysts were prepared using step by step contin- uous coprecipitation method, and the catalytic performance of the catalysts was investigated. The experi- mental results showed that the catalyst exhibited the best activity, CO conversion, the yield of C2 ＋ OH in liquid products and the mass fraction of C2＋ OH was 65.74% ,0. 062 g · （mL · h） -1 and 18.95% , respectively,under the condition as follows ：mass ratio of cobalt to copper 1： 1, K_2CO_3 loading mass frac- tion 1% ,pH =7.2 and reaction temperature 310 ℃.