表面活性剂用量对完全液相法制备的Cu-Zn-Al合成醇催化剂性能影响  

Effect of surfactant dosage on the performance of Cu-Zn-Al catalyst prepared by complete liquid-phase technology for alcohol synthesis

作　　者：延静 李文辉 黄伟[2] 

机构地区：[1]航天长征化学工程股份有限公司兰州分公司,甘肃兰州730000 [2]太原理工大学煤科学与技术教育部和山西省重点实验室,山西太原030024

出　　处：《天然气化工—C1化学与化工》2012年第4期11-14,18,共5页Natural Gas Chemical Industry

基　　金：国家自然科学基金(20471040);国家重点基础研究发展计划(973计划)(2005CB221204)

摘　　要：采用完全液相法制备了Cu-Zn-Al催化剂,研究了表面活性剂聚乙烯吡咯烷酮(PVP)用量对催化剂催化CO加H2合成低碳醇反应性能的影响,并采用XRD、TPR、NH3-TPD-MS等手段对催化剂进行了表征。结果表明,增加PVP用量能增大C2+醇选择性而减小甲醇的选择性。PVP用量影响Cu0晶粒度,Cu0晶粒度与醇类选择性有较好的对应关系,Cu0晶粒度越小,甲醇选择性越高,反之则C2+醇选择性越高。Cu-Zn-A1 slurry catalysts were prepared by a complete liquid-phase technology and characterized by XRD, H2-TPR and NH3-TPD. The effect of dosage of the surfactant polyvinylpyrmlidone （PVP） used for catalyst preparation on the performance of catalysts in synthesis of higher alcohols from syngas was investigated. The results showed that increasing PVP amount could improve selectivity of C2＋ alcohols and reduce methanol formation. PVP amount affected Cu~ particle size of the catalysts, which was closely related to selectivity of alcohols. The smaller the Cu~ particle size was, the higher the selectivity of methanol was. The larger the Cu~ particle size was, the higher the selectivity of C_： alcohols was.

关 键 词：铜锌铝催化剂 完全液相制备法 低碳醇 合成 合成气 表面活性剂 PVP 

分 类 号：O643.3[理学—物理化学] TQ223.1[理学—化学]