CO和CO_2在Cu/ZnO/Al_2O_3催化剂上加氢反应机理的原位红外研究  

IN SITU FT-IR STUDIES ON MECHANISM OF HYDROGENATION OF CO AND CO_2 ON Cu/ZnO/Al_2O_3 CATALYST

作　　者：殷永泉[1] 肖天存[1] 苏继新[1] 王海涛[1] 鹿玉理[1] 李晋鲁[2] 刘崇微[2] 朱起明[2] 李树本[3] 

机构地区：[1]山东大学环境工程系 [2]清华大学化学系一碳化工国家重点实验室 [3]中国科学院兰州化学物理研究所

出　　处：《燃料化学学报》1999年第6期568-571,共4页Journal of Fuel Chemistry and Technology

基　　金：山东省中青年科学家奖励基金;清华大学一碳化工国家重点实验室开放基金

摘　　要：ＣｕＺｎＯＡｌ2Ｏ3催化剂用于合成甲醇的反应机理已经进行了大量的研究[1～3]。近年来,利用原位红外技术在研究合成甲醇的催化反应机理方面取得了不少研究成果[4～7]。但大多数实验是采用低铜含量催化剂[4,5]。本文采用高温加压式原位红外池,在513Ｋ和20ＭＰａ的条件下,...In situ infrared spectroscopy was used to study the mechanism of hydrogenation of CO and CO 2 over Cu/ZnO/Al 2O 3 catalyst The results revealed that CO and CO 2 were hydrogenated from different original species CO was hydrogenated on the basis of CO which was adsorbed on the catalyst, CO 2, however, reacted on the basis of the adsorbed CO 2 They were all turned to methanol via the same intermediate species of formate and methoxy There was an equilibrium reaction for the inter-transformation of CO and CO 2 The addition of CO 2 in CO+H 2 increased the reaction speed, while the addition of CO in CO 2+H 2 decreased the RWGS reaction

关 键 词：甲醇 催化剂 加氢反应 原位红外光谱 氧化碳 

分 类 号：O643.38[理学—物理化学] TQ223.121[理学—化学]