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OALib Journal期刊
ISSN: 2333-9721
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cu、ni、ru、pt对费托合成fe催化剂的助剂作用研究
, PP. 829-838
Keywords: 费托合成,铁基催化剂,助剂,铜,镍,钌,铂
Abstract:
？考察了cu、ni、ru、pt对费托合成fe催化剂的助剂作用。xrd结果表明,加入cu、ni助剂对催化剂有一定的分散作用,而ru、pt影响不大。xps结果表明,所有添加的助剂在催化剂表面均有一定程度的富集,且4种过渡金属助剂与fe存在不同程度的电荷相互作用。h2-tpr表明,cu、pt、ru在催化剂还原过程中首先还原为金属态,进而能够明显促进催化剂的还原。co-tpd表明,加入cu、pt、ni助剂对co的吸附活化有明显的促进作用。用固定床反应器对催化剂的费托反应性能进行了评价,反应结果表明,加入ru、ni、pt、cu会依次提高催化剂的反应活性,pt、cu、ru、ni助剂会依次使催化剂的ch4选择性增加,并降低c5+的选择性。
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