Cu?Co比调变对合成气制低碳醇CuCoCe催化剂性能的影响  

Adjustment of the Mass Ratio of Cu/Co and Its Effect on the Performance of CuCoCe Catalyst for Higher Alcohol Synthesis from Syngas

作　　者：游向轩[1] 黄伟[1] 樊金串[1,2] 周由之 魏珺谊 YOU Xiangxuan HUANG Wei FAN Jinchuan ZHOU Youzhi WEI Junyi(Key laboratory of Coal Science and Technology of Ministry of Education and Shanxi Province College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China)

机构地区：[1]太原理工大学煤科学与技术教育部和山西省重点实验室,太原030024 [2]太原理工大学化学化工学院,太原030024

出　　处：《太原理工大学学报》2017年第4期557-562,共6页Journal of Taiyuan University of Technology

基　　金：国家自然科学基金重点资助项目:合成气高效转化集成工艺及其关键科学与技术问题的研究(21336006);国家科技支撑计划项目:煤基产业节能减排的关键技术研发与示范(2013BAC14B04)资助

摘　　要：以碳纳米管为载体,采用等体积浸渍法制备CuCoCe/CNTs催化剂,并对活性金属组分Cu/Co的质量比进行适当调节,考察了这种调变对催化剂催化合成气制低碳醇性能的影响。实验结果表明,当Cu/Co质量比为2时,CuCoCe/CNTs的低碳醇时空收率最高,达到783.72mg·g^(-1)·h^(-1),选择性42.46%,同时,醇产物中甲醇选择性降到最低,仅有17.29%.研究表明,Cu/Co质量比为2时,催化剂的活性金属颗粒呈现出较好的晶型结构和高度分散性,且具有更好的氧化还原性能,使催化剂具有较高的催化活性和低碳醇选择性。A series of CuCoCe/CNTs catalysts with different Cu/Co mass ratio were prepared by co-impregnation method to study the influence of the adjustment of Cu/Co mass ratio on the catalystic performance of the catalysts for higher alcohols synthesis from syngas.The catalyst showed highest space-time yield（783.72 mg·g^（-1）·h^（-1））and selectivity of higher alcohols（42.46%）while the selectivity of methanol in alcohol distribution was only 17.29% when the mass ratio of Cu/Co was 2.Our research results show that the catalyst with Cu/Co wass ratio 2 had better crystal structure and dispersion of active metal particles and oxidation-reduction ability.Meantime,the carbon nanotube support had excellent confinement effect.All these characteristic made the catalytic activity improved significantly.

关 键 词：低碳醇 合成气 CuCoCe催化剂 碳纳米管 

分 类 号：O643[理学—物理化学]