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An MAS NMR study on the Mo-modified phosphoric rare earth (HZRP-1) penta-sil zeolite catalyst
Shu, YY; Ma, D; Liu, XC; Han, XW; Xu, YD; Bao, XH
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY B
2000-08-31
DOI10.1021/jp001266v
Volume104Issue:34Pages:8245-8249
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Physical
WOS Research AreaChemistry
WOS KeywordSOLID-STATE NMR ; METHANE DEHYDROGENATION ; MO/HZSM-5 CATALYSTS ; TRANSIENT KINETICS ; CAVERN DESIGN ; ACID SITES ; BENZENE ; AROMATIZATION ; CONVERSION ; HZSM-5
AbstractHigh-resolution solid-state MAS NMR, equipped with a newly designed device for conducting catalytic reactions, was used to characterize in-situ an Mo modified phosphoric rare earth-containing penta-sil zeolite catalyst (denoted as Mo /HZRP-1), which showed good activity for methane dehydro-aromatization in the absence of oxygen. Al-27 MAS NMR spectra revealed the presence of different Al-relating species in the calcined and reacted catalysts. High calcination temperature and high Mo loading enhanced the replacement of framework silicon by phosphorus atoms, resulting in the alteration of the environment of aluminum nuclei in the zeolitic framework and leading consequently to a change of the acidic property of the catalyst. In correlation with reaction results of the relevant catalysts, it was concluded that the presence of tetrahedral framework aluminum, which is associated with the formation of Bronsted acidic sites, is of great significance for methane dehydro-aromatization.
Language英语
WOS IDWOS:000089068300022
Citation statistics
Cited Times:30[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/138818
Collection中国科学院大连化学物理研究所
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Shu, YY,Ma, D,Liu, XC,et al. An MAS NMR study on the Mo-modified phosphoric rare earth (HZRP-1) penta-sil zeolite catalyst[J]. JOURNAL OF PHYSICAL CHEMISTRY B,2000,104(34):8245-8249.
APA Shu, YY,Ma, D,Liu, XC,Han, XW,Xu, YD,&Bao, XH.(2000).An MAS NMR study on the Mo-modified phosphoric rare earth (HZRP-1) penta-sil zeolite catalyst.JOURNAL OF PHYSICAL CHEMISTRY B,104(34),8245-8249.
MLA Shu, YY,et al."An MAS NMR study on the Mo-modified phosphoric rare earth (HZRP-1) penta-sil zeolite catalyst".JOURNAL OF PHYSICAL CHEMISTRY B 104.34(2000):8245-8249.
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