| 氧化钾在K_2O－Cr_2O_3／Al_2O_3脱氢催化剂中的作用 |
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| 引用本文： | 王心葵,解红娟,张亮玫,彭少逸. 氧化钾在K_2O－Cr_2O_3／Al_2O_3脱氢催化剂中的作用[J]. 天然气化工, 1995, 0(3) |
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| 作者姓名： | 王心葵 解红娟 张亮玫 彭少逸 |
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| 作者单位： | 中国科学院山西煤炭化学研究所 |
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| 摘 要： | 研究了在Ｃｒ２Ｏ３／Ａｌ２Ｏ３中添加Ｋ２Ｏ对异丁烷催化脱氢反应的影响。实验结果表明，Ｋ２Ｏ的加入可使催化剂活性和选择性得到明显提高。Ｋ２Ｏ的作用除了增加脱氢中心Ｃｒ３＋的浓度外，还使反应历程发生了改变，从而抑制了裂解和芳构化副反应的发生，提高了异丁烯的选择性。
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| 关 键 词： | 异丁烷，催化脱氢，碱助剂 |
Roles of K_2O promotor in K_2O-Cr_2O_3/Al_2O_3 dehydrogenation catalyst |
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| Wang Xinkui, Xie Hongjuan,Zhang Liangmei, Peng Shaoyi. Roles of K_2O promotor in K_2O-Cr_2O_3/Al_2O_3 dehydrogenation catalyst[J]. Natural Gas Chemical Industry, 1995, 0(3) |
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| Authors: | Wang Xinkui Xie Hongjuan Zhang Liangmei Peng Shaoyi |
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| Abstract: | ffects of K2O addition on isobutane dehydrogenation over Cr2O3/Al2O3 system were investigated. Important improvement of catalyst performance was observed both in activity and selectivity. The results may be interpreted in terms of the increase of active site concentration and the change of reaction pathway.The latter suppresses side reactions such as cracking and aromatization,thereby leading to an increase of isobutene selectivity. |
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| Keywords: | isobutane dehydrogenation isobutene K_2O promotor K_2O-Cr_2O_3/Al_2O_3 |
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