文献类型：期刊文献

中文题名：合成气制C2+醇Cu-Mn催化剂的Co改性研究

英文题名：Study on Co modified Cu-Mn catalyst for synthesis of C2+ alcohol from syngas

作者：高利红[1];朱志庆[1];沈卫华[1];方云进[1]

机构：[1]华东理工大学化学工程联合国家重点实验室

年份：2019

卷号：39

期号：11

起止页码：62

中文期刊名：现代化工

外文期刊名：Modern Chemical Industry

收录：CSTPCD;;Scopus;北大核心:【北大核心2017】；CSCD:【CSCD_E2019_2020】；

基金：国家自然科学基金项目(21576083)

语种：中文

中文关键词：合成气;C2+醇;Cu基催化剂;Co改性;协同作用

外文关键词：syngas;higher alcohol;Cu-based catalyst;Co modified;synergistic effect

摘要：采用共沉淀法制备CuCoMnAl多组分金属催化剂,并在固定床反应器中考察该催化剂对合成气制C2+醇反应的性能。实验结果表明,当n(Co)∶n(Cu)=0. 4时,生成C2+醇的选择性达到18. 7%,其中乙醇所占比例>50%,添加Co的催化剂改性效果显著。利用XRD、H2-TPR、BET和CO-TPD等分析方法对催化剂进行表征,考察催化剂的结构和表面性质对生成C2+醇选择性的影响。结果表明,适量添加Co可使催化剂形成双级孔结构,生成了具有协同作用的Cu-Co结构,显著增加催化剂吸附CO的能力,促进合成C2+醇活性位的形成。
A series of CuCo MnAl multi-component catalysts are prepared by co-precipitation method. Synthesis of higher alcohols is performed in a fixed bed reactor to evaluate the performance of the prepared catalysts. The results indicate that at a Co/Cu ratio of 0. 4,the selectivity of C2+ alcohols can reach 18. 7% and the proportion of ethanol exceeds 50%.The catalysts are characterized by XRD,H2-TPR,CO-TPD and BET techniques to investigate the effect of catalysts structure and surface properties on the selectivity of C2+ alcohols.It is shown that the proper addition amount of Co can make the catalysts form bimodal porous structure.Cu-Co structure with synergistic effect can significantly enhance catalysts’ adsorption capacity to CO and promote the formation of the active sites for C2+ alcohols.