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OALib Journal期刊
ISSN: 2333-9721
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负载ni催化剂用于乙二醇蒸汽重整制氢催化性能研究
, PP. 581-588
Keywords: 乙二醇,蒸汽重整,负载镍催化剂,制氢
Abstract:
？采用等体积浸渍法和共沉淀法制备了ni催化剂,在固定床反应器上考察了ni负载量、焙烧温度、反应温度等因素对乙二醇低温重整制氢反应活性和选择性的影响。应用x射线衍射、氮物理吸附、h2程序升温还原等技术对负载型ni催化剂进行了表征。结果表明,共沉淀法制备的ni/ceo2催化剂具有较小的nio颗粒与ceo2载体颗粒粒径,催化活性较高。添加少量氧化钴到ni/ceo2催化剂中可使h2收率达72.6%,eg转化率达93.1%。在ceo2中添加al2o3能提高负载ni催化剂的活性,乙二醇转化率达94.0%,h2收率达67.0%;但添加sio2则使其活性明显变差。
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