Fe含量对Fe-Zn-M/HY复合催化剂上CO_2加氢性能的影响  

EFFECTS OF Fe CONTENT ON THE HYDROGENATION OF CARBON DIOXIDE OVER Fe-Zn-M/HY COMPOSITE CATALYSTS

作　　者：白荣献[1] 谭猗生[1] 韩怡卓[1] 

机构地区：[1]中国科学院山西煤炭化学研究所煤转化国家重点实验室,山西太原030001

出　　处：《燃料化学学报》2003年第5期424-428,共5页Journal of Fuel Chemistry and Technology

基　　金：国家自然科学基金(29973056) ~~

摘　　要：在340℃,5 0MPa条件下,研究了Fe Zn M HY(M=Cr、Al)复合催化剂上CO2的加氢性能。考察了催化剂中Fe含量对CO2转化率、烃类产物及异构烷烃选择性的影响,并用CO2 TPD、H2 TPR研究了Fe Zn M对CO2的吸附和对H2的还原性能。结果表明,随着Fe含量的增加,复合催化剂的活性增强,烃类产物的选择性降低,异构烷烃在烃类中的选择性随Fe含量的增加而降低,CO2 TPD、H2 TPR结果表明,随Fe含量的增加,催化剂对CO2的活化吸附量随之增加,而Fe含量的增加促进了催化剂的还原。The hydrogenation of carbon dioxide over FeZnM/HY (M=Cr, Al) composite catalysts at 340?℃,50?MPa was studied Effects of Fe content of FeZnM catalysts on the conversion of carbon dioxide, the selectivity of hydrocarbon products were investigated The adsorption performance of carbon dioxide and the reductive performance of FeZnM (M=Cr, Al) catalysts were studied by means of carbon dioxide TemperatureProgrammedDesorption (TPD) and H2 TemperatureProgrammedReduction (TPR) The results indicated that the activity of the composite catalysts was improved with the increase of Fe content of FeZnM catalysts while the selectivity to hydrocarbons was decreased Furthermore, the fraction of isoalkanes in hydrocarbons produce decreased with the increase of the Fe content CO2TPD and H2TPR study showed that the higher Fe content could result in more adsorption of carbon dioxide and easier reduction of the catalysts

关 键 词：CO2加氢 Fe含量 复合催化剂 异构烷烃 

分 类 号：O643[理学—物理化学]