Fe/Silicalite-2催化剂表面CO_2加氢反应性能的研究  

STUDY OF Fe/SILICALITE2 CATALYST FOR PRODUCING LIGHT OLEFINS FROM CO 2 HYDROGENATION

作　　者：徐龙伢[1] 王清遐[1] 林励吾[1] 梁东白[1] 杨力[1] 崔巍[2] 徐奕德[2] 

机构地区：[1]中国科学院大连化学物理研究所 [2]中国科学院大连化学物理研究所催化基础国家重点实验室

出　　处：《燃料化学学报》1997年第2期170-174,共5页Journal of Fuel Chemistry and Technology

基　　金：国家自然科学基金

摘　　要：研究了Ｆｅ／Ｓｉｌｉｃａｌｉｔｅ２催化剂ＣＯ２加氢制低碳烯烃反应性能，利用ＣＯ２ＴＰＤ、ＣＯ２／Ｈ２ＴＰＳＲ和ＣＯ／Ｈ２ＴＰＳＲ表征手段，考察了铁含量及ＭｎＯ助剂对Ｆｅ／Ｓｉｌｉｃａｌｉｔｅ２催化剂ＣＯ２吸附脱附及加氢反应性能的影响，表明随铁含量增加可提高催化剂对ＣＯ２的吸附能力，有利于提高ＣＯ２加氢反应的转化率；发现ＭｎＯ助剂主要有利于提高ＣＯ２加氢反应生成低碳烯烃的选择性。CO 2TPD, CO 2/H 2TPSR and CO/H 2TPSR were employed to investigate the catalytic performance of FeMnO/silicalite2 catalyst for the production of light alkenes from CO 2 hydrogenation. It has been shown that Fe is a active component of CO 2 hydrogenation for the synthesis of hydrocarbons The increment of its loading content can enhance the adsorption capacity of CO 2, accompanying the increment of CO 2 conversion and hydrocarbon formation Especially in H 2 atmosphere, the FT reaction is promoter with Fe loading increasing, causing the watergas shift reaction CO 2+H 2CO+H 2O shifting to the right direction and being favorable for the enhancement of CO 2 conversion MnO is an effective promoter for the production of light olefins from CO 2 hydrogenation With addition of MnO, the selectivity of light olefins, especially, the olefin/paraffin ratio were increased obviously

关 键 词：加氢 催化剂 二氧化碳 

分 类 号：O621.254.2[理学—有机化学] O643.36[理学—化学]