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Butene catalytic cracking to propene and ethene over potassium modified ZSM-5 catalysts
Zhu, XX; Liu, SL; Song, YQ; Xu, LY; Xu LY(徐龙伢); Xu LY(徐龙伢)
关键词Butene Catalytic Cracking k Modification Propene Ethene Zsm-5 Catalyst
刊名CATALYSIS LETTERS
2005-10-01
DOI10.1007/s10562-005-7155-5
103期:3-4页:201-210
收录类别SCI
文章类型Article
部门归属8
项目归属804
产权排名1;1
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Physical
研究领域[WOS]Chemistry
关键词[WOS]SKELETAL ISOMERIZATION ; MO/HZSM-5 CATALYST ; DILUTE ETHENE ; ZEOLITE ; AROMATIZATION ; PERFORMANCE ; CONVERSION ; MECHANISM ; METHANE ; ACIDITY
英文摘要Catalytic cracking of butene over potassium modified ZSM-5 catalysts was carried out in a fixed-bed microreactor. By increasing the K loading on the ZSM-5, butene conversion and ethene selectivity decreased almost linearly, while propene selectivity increased first, then passed through a maximum (about 50% selectivity) with the addition of ca. 0.7-1.0% K, and then decreased slowly with further increasing of the K loading. The reaction conditions were 620 degrees C, WHSV 3.5 h(-1), 0.1 MPa 1-butene partial pressure and 1 h of time on stream. Both by potassium modification of the ZSM-5 zeolite and by N(2) addition in the butene feed could enhance the selectivity towards propene effectively, but the catalyst stability did not show any improvement. On the other hand, addition of water to the butene feed could not only increase the butene conversion, but also improve the stability of the 0.7%K/ZSM-5 catalyst due to the effective removal of the coke formed, as demonstrated by the TPO spectra. XRD results indicated that the ZSM-5 structure of the 0.07% K/ZSM-5 catalyst was not destroyed even under this serious condition of adding water at 620 degrees C.
语种英语
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WOS记录号WOS:000232030200007
引用统计
被引频次:33[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/92687
专题中国科学院大连化学物理研究所
通讯作者Xu LY(徐龙伢); Xu LY(徐龙伢)
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Dalian 116023, Peoples R China
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GB/T 7714
Zhu, XX,Liu, SL,Song, YQ,et al. Butene catalytic cracking to propene and ethene over potassium modified ZSM-5 catalysts[J]. CATALYSIS LETTERS,2005,103(3-4):201-210.
APA Zhu, XX,Liu, SL,Song, YQ,Xu, LY,徐龙伢,&徐龙伢.(2005).Butene catalytic cracking to propene and ethene over potassium modified ZSM-5 catalysts.CATALYSIS LETTERS,103(3-4),201-210.
MLA Zhu, XX,et al."Butene catalytic cracking to propene and ethene over potassium modified ZSM-5 catalysts".CATALYSIS LETTERS 103.3-4(2005):201-210.
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