氧化铜／氧化锆甲醇合成催化剂的性能研究  

STUDY OF CuO/ZrO_2 CATALYSTS FOR METHANOL SYNTHESIS FROM CO/H_2

作　　者：刘源[1] 钟炳[1] 王琴[1] 彭少逸[1] 

机构地区：[1]中国科学院山西煤炭化学研究所

出　　处：《Chinese Journal of Catalysis》1995年第6期442-446,共5页催化学报（英文）

摘　　要：以超临界干燥法制得的超细ＺｒＯ２为载体，浸渍铜后所得的ＣｕＯ／ＺｒＯ２催化剂对ＣＯ／Ｈ２合成甲醇呈现出较好的活性和选择性．反应温度对催化剂的活性和选择性有较大的影响．ＸＰＳ结果表明，载体和活性组分间存在着相互作用．ＴＰＲ结果说明ＣｕＯ／ＺｒＯ２中的铜以两种形式存在，一种为体相铜，另一种为高度分散的铜．后者的含量和甲醇产率存在着顺应关系，它应是关键的活性组分．uO/ZrO2 catalysts exhibit good activity and high selectivity for methanol synthesis from CO/2H2. The catalysts were prepared by impregnation and ultra-fine ZrO2 support was dried by supercritical drying method. Reaction temperature influences the activity and selectivity for this reaction in greater level than pressure does.The maximum conversion of carbon monoxide to methanol was obtained at 275℃ The steady state activity was reached after about fifteen hours of reaction and maintained for over forty hours. It was found from XPS results that interaction between copper and support existed. TPR revealed that there were two kinds of CuO in the catalysts: one was bulk CuO and the other was easy to be reduced one. The productivity of methanol increases with the increase of the content of the latter, so it is likely that the latter one is the key component of the catalysts for the reaction activity. XRD spectra gave only the diffraction peak of metal copper and Cu2O could not be found in reduced and used catalysts.

关 键 词：二氧化锆 氧化铜 甲醇合成 催化性能 

分 类 号：TQ426.82[化学工程] O623.411[理学—有机化学]