Effect of variations in acid properties of HZSM-5 on the coking behavior and reaction stability in butene aromatization
文献类型：期刊论文
| 作者 | Song, YQ; Li, HB; Guo, ZJ; Zhu, XX; Liu, SL; Niu, XL; Xu, LY |
| 刊名 | applied catalysis a-general
 |
| 出版日期 | 2005-09-18 |
| 卷号 | 292页码:162-170 |
| 关键词 | butene aromatization ZSM-5 zeolite hydrothermal treatment reaction stability acid properties |
| 产权排序 | 1;1 |
| 通讯作者 | 徐龙伢 |
| 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. |
| 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 |
| 收录类别 | SCI |
| 原文出处 | true |
| 语种 | 英语 |
| WOS记录号 | WOS:000234202200017 |
| 公开日期 | 2010-11-30 |
| 源URL | [http://159.226.238.44/handle/321008/92421]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 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 |
| 推荐引用方式 GB/T 7714 | 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.,...&Xu, LY.(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. |
入库方式： OAI收割
来源：大连化学物理研究所
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