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学科主题: 物理化学
题名: Transformation of Isobutyl Alcohol to Aromatics over Zeolite-Based Catalysts
作者: Yu, Lili1, 2;  Huang, Shengjun1;  Zhang, Shuang1;  Liu, Zhenni1;  Xin, Wenjie1;  Xie, Sujuan1;  Xu, Longya1
通讯作者: 黄声骏 ;  徐龙伢
关键词: isobutyl alcohol ;  zeolites ;  aromatization ;  zinc species
刊名: ACS CATALYSIS
发表日期: 2012-06-01
DOI: 10.1021/cs300048u
卷: 2, 期:6, 页:1203-1210
收录类别: SCI
文章类型: Article
部门归属: DNL08
项目归属: DNL0804
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
英文摘要: One-step transformation of isobutyl alcohol to aromatics (benzene, toluene, and xylene) has been studied in a gas phase, fixed-bed reactor system over several purely acidic zeolites and zeolite-supported metal catalysts. ZSM-5 zeolites give higher aromatics yields (similar to 42 wt %) among the evaluated zeolites, and the Si! Al ratios (Si/Al = 13-43) of ZSM-5 slightly influence their catalytic performances. During the transformation of isobutyl alcohol, large amounts of short alkanes (mainly propane and butane isomers) are also generated on the acidic ZSM-S. To improve the conversion to aromatics, several metal species (Zn, Ga, Mo, La, Ni, Ag, and Pt) are supported on the ZSM-5. The enhancements in aromatics yields (similar to 60wt %) are observed only on the Zn/ZSM-5 catalysts. The incorporation of Zn species preferentially decreases the strong-strength Bronsted acidity and, thus, suppresses the cracking to C-3 fragments. Moreover, mainly the Zn species at the exchange sites facilitate the recombinative desorption of H-2 and, hence, enhance the reactions toward aromatics. Through these effects, Zn/ZSM-5 catalysts exhibit the remarkably promoted formation of toluene and xylene and inhibit the generation of undesired alkanes products.
关键词[WOS]: PROPANE AROMATIZATION ;  ZSM-5 ZEOLITES ;  HYDROCARBONS ;  ACTIVATION ;  CONVERSION ;  HZSM-5 ;  ALKANES ;  ETHANE ;  ACID ;  ZN
语种: 英语
WOS记录号: WOS:000304682600034
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/117766
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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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 Univ, Beijing 100049, Peoples R China

Recommended Citation:
Yu, Lili,Huang, Shengjun,Zhang, Shuang,et al. Transformation of Isobutyl Alcohol to Aromatics over Zeolite-Based Catalysts[J]. ACS CATALYSIS,2012,2(6):1203-1210.
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