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The roles of acidity and structure of zeolite for catalyzing toluene alkylation with methanol to xylene
Zhu, ZR; Chen, QL; Xie, ZK; Yang, WM; Li, C
KeywordZeolite Acidity And Structure Toluene Alkylation With Methanol Toluene Methylation Xylene
Source PublicationMICROPOROUS AND MESOPOROUS MATERIALS
2006-01-21
DOI10.1016/j.micromeso.2005.08.021
Volume88Issue:1-3Pages:16-21
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Applied ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS KeywordMOLECULAR-SIEVE ; MODIFIED ZSM-5 ; CATALYSTS ; MORDENITE
AbstractA variety of zeolites, including MOR, MCM-22, SAPO-34, SAPO-11, SAPO-5 and ZSM-5 with different SiO2/Al2O3 ratio, were used for catalyzing toluene alkylation with methanol to produce xylene. The catalytic activity of zeolite for the toluene alkylation is approximately proportional to the number of its mid-strength acidic sites, except for SAPO-34 with small channels and MOR with strong acidity. Moreover, the acidic sites for catalyzing toluene alkylation are weaker in strength than those for catalyzing toluene disproportionation, but slightly stronger than those for catalyzing the reaction of methanol to hydrocarbons. On the other hand, zeolites with 12-membered ring channels may lead to the further alkylation of xylene and the rapid deactivation by coking. Zeolites with 8-membered ring channels restrict toluene alkylation, only favorable for forming non-aromatic hydrocarbons. As a result, zeolites with 10-membered ring channels and mid-strength acidity show high catalytic selectivity and activity for methylation of toluene. (c) 2005 Elsevier Inc. All rights reserved.
Language英语
WOS IDWOS:000234774100003
Citation statistics
Cited Times:61[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/139964
Collection中国科学院大连化学物理研究所
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Shanghai Res Inst Petrochem Technol, Shanghai 201208, Peoples R China
Recommended Citation
GB/T 7714
Zhu, ZR,Chen, QL,Xie, ZK,et al. The roles of acidity and structure of zeolite for catalyzing toluene alkylation with methanol to xylene[J]. MICROPOROUS AND MESOPOROUS MATERIALS,2006,88(1-3):16-21.
APA Zhu, ZR,Chen, QL,Xie, ZK,Yang, WM,&Li, C.(2006).The roles of acidity and structure of zeolite for catalyzing toluene alkylation with methanol to xylene.MICROPOROUS AND MESOPOROUS MATERIALS,88(1-3),16-21.
MLA Zhu, ZR,et al."The roles of acidity and structure of zeolite for catalyzing toluene alkylation with methanol to xylene".MICROPOROUS AND MESOPOROUS MATERIALS 88.1-3(2006):16-21.
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