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Cu/ZrO_2催化剂的结构及其CO_2加氢合成甲醇催化反应性能
引用本文:庄会栋,白绍芬,刘欣梅,阎子峰.Cu/ZrO_2催化剂的结构及其CO_2加氢合成甲醇催化反应性能[J].燃料化学学报,2010,38(4):462-467.
作者姓名:庄会栋  白绍芬  刘欣梅  阎子峰
作者单位:State Key Laboratory for Heavy Oil Processing, ,Key Laboratory of Catalysis, CNPC, China University of Petroleum(East China), Qingdao 266555, China
摘    要:采用低温氮气吸脱附、XRD、TPR、In-situ IR和XPS等表征手段,对分步沉淀法、浸渍沉淀法和固态反应法制备的CuO/ZrO2催化剂进行表征,同时考察了其CO2加氢合成甲醇反应性能。结果表明,制备方法对CuO/ZrO2的物理结构和还原性能影响很大,其中浸渍沉淀法制备的催化剂Cu与ZrO2相互作用最强,并显示了较高的CO2转化率和甲醇收率。Cu与ZrO相互作用的强弱直接影响CO加氢合成甲醇反应性能的优劣,而催化剂的比表面积不是影响反应性能的主导因素。

关 键 词:氧化铜  二氧化锆  甲醇合成  二氧化碳加氢  浸渍沉淀法  X射线光电子能谱  
收稿时间:2009-12-28

Structure and performance of Cu/ZrO2 catalyst for the synthesis of methanol from CO2 hydrogenation
ZHUANG Hui-dong,BAI Shao-fen,LIU Xin-mei,YAN Zi-feng.Structure and performance of Cu/ZrO2 catalyst for the synthesis of methanol from CO2 hydrogenation[J].Journal of Fuel Chemistry and Technology,2010,38(4):462-467.
Authors:ZHUANG Hui-dong  BAI Shao-fen  LIU Xin-mei  YAN Zi-feng
Abstract:Cu/ZrO2 catalysts were prepared through fractional precipitation, impregnation-precipitation and solid-state reaction methods and characterized by N2 sorption, XRD, TPR, in-situ IR and XPS techniques. Their catalytic performances in methanol synthesis from CO2 hydrogenation were investigated. The results showed that the physical structure and reducibility as well as the interaction between Cu and ZrO2 of a Cu/ZrO2 catalyst are greatly affected by the preparation method. The catalytic performance of Cu/ZrO2 is mainly determined by the interaction between Cu and ZrO2 rather than by the surface area. Compared with the catalysts prepared by other methods, the Cu/ZrO2 catalyst prepared by impregnation-precipitation is provided with higher CuO dispersion and stronger interaction between Cu and ZrO2; it also exhibits higher CO2 conversion and higher methanol yield when used as catalyst in the synthesis of methanol from CO2 hydrogenation.
Keywords:copper oxide  zirconia  methanol synthesis  carbon dioxide hydrogenation  impregnation-precipitation  XPS  
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