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Effect of variations in acid properties of HZSM-5 on the coking behavior and reaction stability in butene aromatization
Song, YQ; Li, HB; Guo, ZJ; Zhu, XX; Liu, SL; Niu, XL; Xu, LY; Xu LY(徐龙伢); Xu LY(徐龙伢)
关键词Butene Aromatization Zsm-5 Zeolite Hydrothermal Treatment Reaction Stability Acid Properties
刊名APPLIED CATALYSIS A-GENERAL
2005-09-18
DOI10.1016/j.apcata.2005.05.036
292页:162-170
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 ; Life Sciences & Biomedicine
类目[WOS]Chemistry, Physical ; Environmental Sciences
研究领域[WOS]Chemistry ; Environmental Sciences & Ecology
关键词[WOS]CATALYTIC PROPERTIES ; COKE FORMATION ; ZSM-5 ; ZEOLITES ; HYDROCARBONS ; DEACTIVATION ; SELECTIVITY ; BTX
英文摘要In order to investigate the effect of acid properties on the coke behavior and stability of butene aromatization, we prepared the AHZSM-5 samples with various acid properties by the methods of hydrothernial treatment and K addition. The reaction of butene aromatization was carried out at 350 degrees C and 0.5 MPa in a continuous flow fixed bed. The characterization of the fresh/coked catalysts with NH3-TPD, N-2 adsorption-desorption measurement, and TG techniques has shown that a large amount of acid sites (high acid density) of the AHZMS-5 catalyst can cause a large quantity of coke deposit and serious channel blockage, and so result in a rapid loss of aromatization activity. On the contrary, after a great reduction in strong acid sites of AHZSM-5 catalyst resulting from some K-modification, the presence of only many weak acid sites also could not lessen the formation of coke nor improve the reaction stability of butene aromatization. Interestingly, the simultaneous reduction in the strong and weak acid sites to a desirable level by hydrothermal treating the AHZSM-5 catalyst at a proper temperature can effectively suppress the coke formation and channel blockage, and thus improve its olefin aromatization stability. (c) 2005 Elsevier B.V. All rights reserved.
语种英语
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WOS记录号WOS:000234202200017
引用统计
被引频次:20[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/321008/92421
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, Dalian 116023, Peoples R China
2.CNPC, Fushun Petrochem Co, Fushun 113004, Liaoning, Peoples R China
3.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
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Song, YQ,Li, HB,Guo, ZJ,et al. Effect of variations in acid properties of HZSM-5 on the coking behavior and reaction stability in butene aromatization[J]. APPLIED CATALYSIS A-GENERAL,2005,292:162-170.
APA Song, YQ.,Li, HB.,Guo, ZJ.,Zhu, XX.,Liu, SL.,...&徐龙伢.(2005).Effect of variations in acid properties of HZSM-5 on the coking behavior and reaction stability in butene aromatization.APPLIED CATALYSIS A-GENERAL,292,162-170.
MLA Song, YQ,et al."Effect of variations in acid properties of HZSM-5 on the coking behavior and reaction stability in butene aromatization".APPLIED CATALYSIS A-GENERAL 292(2005):162-170.
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