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OALib Journal期刊
ISSN: 2333-9721
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k、mn助剂协同效应对fe基催化剂上co加氢制低碳烯烃反应性能的影响
, PP. 1488-1494
Keywords: 合成气,低碳烯烃,锰钾助剂,co加氢反应
Abstract:
？采用典型方法制备了不同fe、mn、k比例的铁基催化剂，利用x射线粉末衍射、n2吸附/脱附、扫描电镜、拉曼光谱、h2-tpr等手段对催化剂进行了表征，并考察了催化剂对co加氢制低碳烯烃反应的催化性能。结果表明，mn能有效促进活性相分散，抑制碳链增长，但fe-mn强相互作用不能有效增加低碳烃烯/烷比，α-fe2o3作为活性铁物种前驱体对烯烃生成反应更加有利。k通过减少mn以氧化物形式出现，增加femn化合物晶格缺陷，从而最终使fe-mn-k催化剂低碳烯烃收率显著高于fe-mn和fe-k体系。
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