| Study on Bifunctionality of Mo／HZSM—5 Catalysts for Methane Dehydro—Aromatization under Non—oxidative Condition |
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| 引用本文： | LinglingSu YideXu 等. Study on Bifunctionality of Mo／HZSM—5 Catalysts for Methane Dehydro—Aromatization under Non—oxidative Condition[J]. 天然气化学杂志, 2002, 11(1): 18-27 |
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| 作者姓名： | LinglingSu YideXu 等 |
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| 作者单位： | [1]StateKeyLaboratoryofCatalysis,DalianInstituteofChemicalPhysics,ChineseAcademyofSciences,457ZhongshanRoad,P.O.Box110,Dalian,116023,China [2]StateKeyLaboratoryofCatalysis,DalianInstituteofChemicalPhysics,C |
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| 摘 要： | The optimum Mo/[H^ ] ratio per unit cell of the active precursors in Mo/HZSM-5 catalysts for methane dehydro-aromatization,measured by ^1H MAS NMR,was found to be about 1 when adjusting the acid sites by altering either the SiO2/Al2O3 ration or the Mo loading,This implies that a concerted interaction between the Mo species and the Broensted acid sites probably features the bifunctionality of the Mo/HZSM-5 catalyst,On the other hand,it was found that the driving force for Mo species to move into the HSZM-5 zeolite channels and the interaction between the Mo species and the Broensted acid sites are closely and proportionably realtaed with the amount of Broensted acid sites per unit cell.
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| 关 键 词： | 甲烷 钼 负载型催化剂 分子筛 脱氢 芳构化 Mo／HZSM－5 |
Study on Bifunctionality of Mo/HZSM-5 Catalysts for Methane Dehydro-Aromatization |
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| Lingling Su,Yide Xu,Xinhe Bao. Study on Bifunctionality of Mo/HZSM-5 Catalysts for Methane Dehydro-Aromatization[J]. Journal of Natural Gas Chemistry, 2002, 11(1): 18-27 |
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| Authors: | Lingling Su Yide Xu Xinhe Bao |
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| Affiliation: | State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, P. O. Box 110, Dalian, 116023, China |
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| Abstract: | The optimum Mo/[H+] ratio per unit cell of the active precursors in Mo/HZSM-5 catalystsfor methane dehydro-aromatization, measured by 1H MAS NMR, was found to be about 1 when adjustingthe acid sites by altering either the SiO2/Al2O3 ratios or the Mo loading. This implies that a concertedinteraction between the Mo species and the Bronsted acid sites probably features the bifunctionality of theMo/HZSM-5 catalyst. On the other hand, it was found that the driving force for Mo species to move intothe HSZM-5 zeolite channels and the interaction between the Mo species and the Bronsted acid sites areclosely and proportionably related with the amount of Bronsted acid sites per unit cell. |
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| Keywords: | methane dehydro-aromatization Mo/HZSM-5 SiO2/Al2O3 ratio bifunctionality |
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