An in situ methylation of toluene using syngas over bifunctional mixture of Cr2O3/ZnO and HZSM-5
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Seulah | - |
dc.contributor.author | Kim, Donguk | - |
dc.contributor.author | Lee, Jihye | - |
dc.contributor.author | Choi, Yeseul | - |
dc.contributor.author | Suh, Young-Woong | - |
dc.contributor.author | Lee, Changq | - |
dc.contributor.author | Kim, Tae Jin | - |
dc.contributor.author | Lee, Seong Jun | - |
dc.contributor.author | Lee, Jung Kyoo | - |
dc.date.accessioned | 2022-07-16T08:31:20Z | - |
dc.date.available | 2022-07-16T08:31:20Z | - |
dc.date.created | 2021-05-12 | - |
dc.date.issued | 2013-09 | - |
dc.identifier.issn | 0926-860X | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/162082 | - |
dc.description.abstract | The in situ methylation of toluene using syngas (in situ methylation hereafter) was studied to produce xylenes over bifunctional catalysts comprising Cr2O3/ZnO (CrZ) and HZSM-5 (SiO2/Al2O3 = 30) in a fixed-bed down-flow reactor at 460 psig. In this study, three basic aspects in the in situ methylation were investigated: (1) the catalytic activity of CrZ as the methanol synthesis catalyst with respect to the equilibrium conversion, (2) the evaluation of catalytic synergies in the in situ methylation over bifunctional catalyst, and (3) the effect of the ratio of catalytic functions regarding the ratio of methanol synthesis catalyst to HZSM-5, and their intimacy. The CrZ catalyst exhibited very low CO conversion to methanol in the methanol synthesis reaction, which is controlled by the equilibrium. However, the bifunctional mixture of CrZ and HZSM-5 catalysts exhibited significant catalytic synergies in the in situ methylation in terms of catalytic activity and product selectivities, with about a 10-times-higher CO conversion rate, and 2- to 3-times-higher toluene conversion and xylene production rates compared to the monofunctional catalysis of methanol synthesis and toluene disproportionation, respectively. The in situ methylation also gave rise to higher catalytic performance than in typical toluene methylation conducted with a molar feed ratio of methanol/toluene of 0.5. The catalytic synergy was manifested when both metallic and acidic functions were brought into close intimacy with a weight ratio of CrZ/HZSM-5 close to one in the in situ methylation. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER SCIENCE BV | - |
dc.title | An in situ methylation of toluene using syngas over bifunctional mixture of Cr2O3/ZnO and HZSM-5 | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Suh, Young-Woong | - |
dc.identifier.doi | 10.1016/j.apcata.2013.06.025 | - |
dc.identifier.scopusid | 2-s2.0-84880867020 | - |
dc.identifier.wosid | 000324656500011 | - |
dc.identifier.bibliographicCitation | APPLIED CATALYSIS A-GENERAL, v.466, pp.90 - 97 | - |
dc.relation.isPartOf | APPLIED CATALYSIS A-GENERAL | - |
dc.citation.title | APPLIED CATALYSIS A-GENERAL | - |
dc.citation.volume | 466 | - |
dc.citation.startPage | 90 | - |
dc.citation.endPage | 97 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Environmental Sciences & Ecology | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Environmental Sciences | - |
dc.subject.keywordPlus | METHANOL SYNTHESIS | - |
dc.subject.keywordPlus | SYNTHESIS GAS | - |
dc.subject.keywordPlus | DIMETHYL ETHER | - |
dc.subject.keywordPlus | LIQUID HYDROCARBONS | - |
dc.subject.keywordPlus | OPERATING-CONDITIONS | - |
dc.subject.keywordPlus | CATALYSTS | - |
dc.subject.keywordPlus | CONVERSION | - |
dc.subject.keywordPlus | ZEOLITE | - |
dc.subject.keywordPlus | ZSM-5 | - |
dc.subject.keywordPlus | DME | - |
dc.subject.keywordAuthor | Syngas | - |
dc.subject.keywordAuthor | Toluene methylation | - |
dc.subject.keywordAuthor | Methanol synthesis catalyst | - |
dc.subject.keywordAuthor | Cr2O3/ZnO | - |
dc.subject.keywordAuthor | HZSM-5 | - |
dc.subject.keywordAuthor | Bifunctional catalyst | - |
dc.subject.keywordAuthor | Xylenes production | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/pii/S0926860X13003554?via%3Dihub | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
222, Wangsimni-ro, Seongdong-gu, Seoul, 04763, Korea+82-2-2220-1365
COPYRIGHT © 2021 HANYANG UNIVERSITY.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.