共沉淀法制备铜钴基低碳混合醇催化剂

摘要

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、K2CO3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C2+ OH产量0.062 g·(mL·h)-1,C2+ OH质量分数18.95％.%A series of K modified copper-cobalt based catalysts were prepared using step by step continuous coprecipitation method,and the catalytic performance of the catalysts was investigated.The experimental 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,K2CO3 loading mass fraction 1％,pH =7.2 and reaction temperature 310 ℃.