Temperature-Programmed Methanol Conversion and Coke Deposition on Fluidized-Bed Catalyst of SAPO-34

	Temperature-Programmed Methanol Conversion and Coke Deposition on Fluidized-Bed Catalyst of SAPO-34
	Yuan Cuiyu; Wei Yingxu; Li Jinzhe; Xu Shutao; Chen Jingrun; Zhou You; Wang Quanyi; Xu Lei; Liu Zhongmin
刊名	chinese journal of catalysis
	2012-02-01
卷号	33 期号:2 页码:367-374
关键词	methanol conversion coke deposition temperature-programmed reaction hydrocarbon pool mechanism deactivation adamantane hydrocarbon
英文摘要	temperature-programmed methanol conversion was performed in a microscale fluidized-bed reactor and the deposited coke species formed during the reaction at different temperature ranges was analyzed. by combining effluent detection and measurements of confined coke species evolution with thermal analysis and gc/ms, a particular phenomenon that appeared in the methanol conversion was explained. among the coke products, besides aromatic coke species, a new kind of coke compounds, multi-ringed alkalies, mainly composed of methyladamantane hydrocarbons were found in the low temperature range. the generation and accommodation of these adamantane hydrocarbons on the sapo-34 catalyst suppressed the successive formation of hydrocarbon pool species, polymethylbenzenes, as the reaction center of methanol conversion, and caused the low activity of the sapo-34 catalyst at low reaction temperature. in the temperature range of 300-350 degrees c, methylbenzenes and methyladamantanes were the main coke materials and they were transformed to methylnaphthalenes and polycyclic aromatics at higher temperature. the evolution of the confined coke compounds corresponded to the initial reactivity enhancement of the catalyst at 300-325 degrees c, the lowered activity at 325-350 degrees c, and recovered methanol conversion at 350-400 degrees c. based on the coke analysis and catalytic performance tests, a new deactivation mechanism was proposed for the methanol conversion with the consideration of the abundant formation of adamantane hydrocarbons as the confined materials at low temperature.
WOS标题词	science & technology ; physical sciences ; technology
类目[WOS]	chemistry, applied ; chemistry, physical ; engineering, chemical
研究领域[WOS]	chemistry ; engineering
关键词[WOS]	to-olefin catalysis ; hydrocarbons reaction ; reaction-mechanism ; shape-selectivity ; mto reaction ; hsapo-34 ; deactivation ; h-sapo-34 ; cavities
收录类别	SCI
语种	英语
WOS记录号	WOS:000301090900023
公开日期	2015-11-17
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/143070]
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	Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Natl Engn Lab Methanol To Olefins, Dalian 116023, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Yuan Cuiyu,Wei Yingxu,Li Jinzhe,et al. Temperature-Programmed Methanol Conversion and Coke Deposition on Fluidized-Bed Catalyst of SAPO-34[J]. chinese journal of catalysis,2012,33(2):367-374.
APA	Yuan Cuiyu.,Wei Yingxu.,Li Jinzhe.,Xu Shutao.,Chen Jingrun.,...&Liu Zhongmin.(2012).Temperature-Programmed Methanol Conversion and Coke Deposition on Fluidized-Bed Catalyst of SAPO-34.chinese journal of catalysis,33(2),367-374.
MLA	Yuan Cuiyu,et al."Temperature-Programmed Methanol Conversion and Coke Deposition on Fluidized-Bed Catalyst of SAPO-34".chinese journal of catalysis 33.2(2012):367-374.