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In situ solid state NMR observation of the methanol-to-hydrocarbons (MTH) process over nanosized and microsized HZSM-5 zeolites; In situ solid state NMR observation of the methanol-to-hydrocarbons (MTH) process over nanosized and microsized HZSM-5 zeolites
Yan, ZM; Ma, D; Zhuang, JQ; Liu, XC; Liu, XM; Han, XW; Bao, XH
刊名PHYSICAL CHEMISTRY CHEMICAL PHYSICS ; PHYSICAL CHEMISTRY CHEMICAL PHYSICS
2002 ; 2002
DOI10.1039/b201897g ; 10.1039/b201897g
4期:18页:4602-4607
收录类别SCI ; SCI
文章类型Article ; Article
WOS标题词Science & Technology ; Science & Technology ; Physical Sciences ; Physical Sciences
类目[WOS]Chemistry, Physical ; Chemistry, Physical ; Physics, Atomic, Molecular & Chemical ; Physics, Atomic, Molecular & Chemical
研究领域[WOS]Chemistry ; Chemistry ; Physics ; Physics
关键词[WOS]BRONSTED ACID SITES ; BRONSTED ACID SITES ; ANGLE-SPINNING NMR ; ANGLE-SPINNING NMR ; NUCLEAR-MAGNETIC-RESONANCE ; NUCLEAR-MAGNETIC-RESONANCE ; MOLECULAR-SIEVE CATALYSTS ; MOLECULAR-SIEVE CATALYSTS ; C-13 MAS NMR ; C-13 MAS NMR ; CRYSTAL SIZE ; CRYSTAL SIZE ; AB-INITIO ; AB-INITIO ; REACTION-MECHANISM ; REACTION-MECHANISM ; OLEFIN CATALYSIS ; OLEFIN CATALYSIS ; SILICA-ALUMINAS ; SILICA-ALUMINAS
英文摘要The formation of surface alkoxy species on nanosized HZSM-5 and microsized HZSM-5, after exposure to methanol and subsequent conversion to olefins, has been investigated by in situ solid state NMR. Compared to microsized HZSM-5 zeolite, the nanosized HZSM-5 zeolite was found to exhibit a higher affinity for trapping methanol species. Activation of the adsorbed methanol species resulted in the formation of various surface alkoxy species with different rigid characters, including the carboxylate-like surface species, as evidenced by deconvolution of the related spectra. The present results support the existence of the so-called carbon-pool in the conversion of methanol, which serves as the reaction precursor not only for the coupling of the species to form olefins, but also for uncontrolled polymerization to give coke on the surface. The nanosized HZSM-5 shows a distinct resistance to the formation of carbonaceous deposits on the surface.; The formation of surface alkoxy species on nanosized HZSM-5 and microsized HZSM-5, after exposure to methanol and subsequent conversion to olefins, has been investigated by in situ solid state NMR. Compared to microsized HZSM-5 zeolite, the nanosized HZSM-5 zeolite was found to exhibit a higher affinity for trapping methanol species. Activation of the adsorbed methanol species resulted in the formation of various surface alkoxy species with different rigid characters, including the carboxylate-like surface species, as evidenced by deconvolution of the related spectra. The present results support the existence of the so-called carbon-pool in the conversion of methanol, which serves as the reaction precursor not only for the coupling of the species to form olefins, but also for uncontrolled polymerization to give coke on the surface. The nanosized HZSM-5 shows a distinct resistance to the formation of carbonaceous deposits on the surface.
语种英语 ; 英语
原文出处查看原文 ; 查看原文
WOS记录号WOS:000177864000045 ; WOS:000177864000045
引用统计
被引频次:3[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/321008/84883
专题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, State Key Lab Catalysis, Dalian 116023, Peoples R China
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Yan, ZM,Ma, D,Zhuang, JQ,et al. In situ solid state NMR observation of the methanol-to-hydrocarbons (MTH) process over nanosized and microsized HZSM-5 zeolites, In situ solid state NMR observation of the methanol-to-hydrocarbons (MTH) process over nanosized and microsized HZSM-5 zeolites[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS, PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2002, 2002,4, 4(18):4602-4607, 4602-4607.
APA Yan, ZM.,Ma, D.,Zhuang, JQ.,Liu, XC.,Liu, XM.,...&Bao, XH.(2002).In situ solid state NMR observation of the methanol-to-hydrocarbons (MTH) process over nanosized and microsized HZSM-5 zeolites.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,4(18),4602-4607.
MLA Yan, ZM,et al."In situ solid state NMR observation of the methanol-to-hydrocarbons (MTH) process over nanosized and microsized HZSM-5 zeolites".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 4.18(2002):4602-4607.
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