用于低碳混合醇合成的Fe/CuZnSi催化剂研究  

Fe/CuZnSi catalysts for synthesis of mixed alcohols

作　　者：宁文生[1] 张伟[1] 金杨福[1] 陈枫 赵原 张为 

机构地区：[1]浙江工业大学化学工程与材料学院,浙江杭州310032 [2]合肥天焱绿色能源开发有限公司,安徽合肥230041

出　　处：《现代化工》2013年第10期66-69,共4页Modern Chemical Industry

基　　金：国家高技术研究发展计划(2009AA05Z435);浙江省自然科学基金(Y4100410);浙江省科技厅公益类项目(2009C21002)

摘　　要：采用沉淀-浸渍方法制备了Fe/CuZnSi催化剂,发现在浸渍Fe过程中生成FeZn2Cu3O6.5晶体,它在焙烧过程中分解形成CuO晶体,有利于Cu和Fe相互均匀分布,提高催化剂的CO加氢反应活性,CO转化率主要决定于催化剂中的Fe含量,催化剂中的Cu与Zn质量相等时,液态产物中的醇含量明显增加,C2+醇约占总醇质量的50%。Fe/CuZnSi catalysts are prepared by precipitation-impregnation method.CuZnSi precursor is obtained by precipitation reaction of the solution of Cu and Zn nitrates with K2SiO3 solution.FeZn2Cu3O6.5 crystal is observed after CuZnSi precursor is impregnated in Fe （NO3）3 solution.FeZn2Cu3O6.5 crystal is decomposed into CuO during the calcination at 400℃.It is helpful to bring forth well contacting between Cu and Fe and is beneficial to increase the reactivity of CO hydrogenation on Fe/CuZnSi catalysts.CO conversion is mainly dependent on Fe content in the catalysts.The distribution of liquid products is influenced by the ratio of Cu and Zn in the catalysts.For the catalyst having equal mass of Cu and Zn,the mass of produced alcohols is more than about two-fold of the hydrocarbons and the content of C2 ＋ alcohols is about half of the total alcohols.

关 键 词：低碳混合醇 CO加氢 铜锌硅母体 浸渍铁 催化剂 

分 类 号：TQ517.2[化学工程]