PDF(187 KB)
PDF(187 KB)
PDF(187 KB)
异丁烷脱氢催化剂的研究*
- 李丽;阎子峰**
作者信息
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Review of Catalytic Dehydrogenation of Isobutene
- Li Li;Yan Zifeng**
Author information
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文章历史
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摘要
本文对异丁烷脱氢反应制异丁烯过程催化剂体系及其反应机理进行了述评,指出异丁烷脱氢依然是最有潜力的转化途径,但非贵金属高效催化剂的研制是其关键.详细总 结了不同载体和助剂对脱氢反应的影响,尤其是载体和助剂的酸碱性以及载体的孔结构.弱 酸中心有利于异丁烷脱氢反应的发生,较小的孔结构能提高反应的选择性.催化剂的抗积炭 性能研究表明: 载体表面的弱酸位和活性组分在表面的高分散度以及碱性助剂的加入,有 利于提高催化剂的抗积炭性能.对异丁烷的脱氢反应机理的研究进行了阐述.
Abstract
Recent progress of the catalysts, reaction routes and mechanism of isobutane dehydrogenation is reviewed. The key for isobutane dehydrogenation is to synthesize non-noble mental catalysts. Furthermore, the influence of supports and additives on isobutane dehydrogenation is summed up in detail, especially acid-base supports and additives and pore structure of supports, which indicates that weak acidic sites are apt to isobutane dehydrogenation. Smaller pore structure of catalysts can improve selectivity of isobulane. Besides, the study of coke over catalysts reveals that weak acidic sites of supports, dispersion of active sites and basic sites of additives favors improved action of coke.
关键词
异丁烷脱氢 / 催化剂 / 反应机理 / 积炭 {{custom_keyword}} /
Key words
isobutene dehydrogenation / catalysts / reaction mechanism / coke {{custom_keyword}} /
中图分类号：
O643.36
TQ031.4
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