DICP OpenIR
Elucidating the olefin formation mechanism in the methanol to olefin reaction over AlPO-18 and SAPO-18
Chen, Jingrun1,2; Li, Jinzhe1; Yuan, Cuiyu1; Xu, Shutao1; Wei, Yingxu1; Wang, Quanyi1,2; Zhou, You1,2; Wang, Jinbang1,2; Zhang, Mozhi1,2; He, Yanli1; Xu, Shuliang1; Liu, Zhongmin1
刊名CATALYSIS SCIENCE & TECHNOLOGY
2014
DOI10.1039/c4cy00551a
4期:9页:3268-3277
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Physical
研究领域[WOS]Chemistry
关键词[WOS]TO-HYDROCARBONS REACTION ; BRONSTED ACID SITES ; CATALYTIC CYCLE ; CARBENIUM IONS ; HEPTAMETHYLBENZENIUM CATION ; PRODUCT SELECTIVITY ; ZEOLITE H-ZSM-5 ; COKE FORMATION ; CONVERSION ; HSAPO-34
英文摘要The mechanism of the methanol to olefin (MTO) reaction over AlPO-18 (without Bronsted acid sites) and two SAPO-18 (with different Bronsted acid site densities) catalysts has been investigated. The Bronsted acid site density of AlPO-18 and SAPO-18 catalysts was determined by H-1 MAS NMR spectroscopy. Methanol conversion over the catalysts showed that the catalytic activity of the catalysts was strongly influenced by their Bronsted acid site density. Using C-13 magic angle spinning (MAS) NMR, we directly observed the pentamethylcyclopentenyl cation (pentaMCP(+)) over SAPO-18 under real MTO reaction conditions, but no carbenium ion was detected over AlPO-18. Furthermore, analysis of confined organics by C-13 MAS NMR and GC-MS clearly demonstrated that higher Bronsted acid site density improved the formation and accumulation of some important and reactive hydrocarbon pool species, such as pentaMCP(+) and polymethylbenzenes. With the aid of the C-12/C-13-methanol switch technique, the detailed olefin formation mechanism was elucidated. During the MTO reaction, light olefin generation over SAPO-18 mainly followed the aromatic-based hydrocarbon pool mechanism; however, the olefin methylation and cracking mechanism accounted for the production of light olefins over AlPO-18.
语种英语
WOS记录号WOS:000340208400056
引用统计
被引频次:30[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/321008/145564
专题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 Natl Lab Clean Energy, Natl Engn Lab Methanol Olefins, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714
Chen, Jingrun,Li, Jinzhe,Yuan, Cuiyu,et al. Elucidating the olefin formation mechanism in the methanol to olefin reaction over AlPO-18 and SAPO-18[J]. CATALYSIS SCIENCE & TECHNOLOGY,2014,4(9):3268-3277.
APA Chen, Jingrun.,Li, Jinzhe.,Yuan, Cuiyu.,Xu, Shutao.,Wei, Yingxu.,...&Liu, Zhongmin.(2014).Elucidating the olefin formation mechanism in the methanol to olefin reaction over AlPO-18 and SAPO-18.CATALYSIS SCIENCE & TECHNOLOGY,4(9),3268-3277.
MLA Chen, Jingrun,et al."Elucidating the olefin formation mechanism in the methanol to olefin reaction over AlPO-18 and SAPO-18".CATALYSIS SCIENCE & TECHNOLOGY 4.9(2014):3268-3277.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Chen, Jingrun]的文章
[Li, Jinzhe]的文章
[Yuan, Cuiyu]的文章
百度学术
百度学术中相似的文章
[Chen, Jingrun]的文章
[Li, Jinzhe]的文章
[Yuan, Cuiyu]的文章
必应学术
必应学术中相似的文章
[Chen, Jingrun]的文章
[Li, Jinzhe]的文章
[Yuan, Cuiyu]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。