Fabrication of c-Axis Oriented ZSM-5 Hollow Fibers Based on an in Situ Solid–Solid Transformation Mechanism.
We report, for the first time, the preparation of novel c-axis oriented ZSM-5 hollow fibers by a combination of seeding and steam-assisted crystallization method using quartz fibers as the temporary soft substrate and Si source. The growth of such unique structure undergoes the development of a b-ax...
| Publicado en: | Journal of the American Chemical Society Vol. 135; no. 41; pp. 15322 - 15326 |
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| Autores principales: | , , , , |
| Formato: | Artículo |
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American Chemical Society
10/16/2013
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| Materias: | |
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=hlh&AN=91281676&site=ehost-live header: @attributes: shortDbName: hlh uiTerm: 91281676 longDbName: Humanities International Complete uiTag: AN controlInfo: bkinfo: jinfo: jid: 00027863 ACS jtl: Journal of the American Chemical Society issn: 00027863 maglogo: N pubinfo: dt: 10/16/2013 vid: 135 iid: 41 pid: 997 pub: American Chemical Society artinfo: ui: 91281676 10.1021/ja408624x ppf: 15322 ppct: 4 formats: tig: atl: Fabrication of c-Axis Oriented ZSM-5 Hollow Fibers Based on an in Situ Solid–Solid Transformation Mechanism. aug: au: Kui Shen Weizhong Qian Ning Wang Chang Su Fei Wei affil: Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, P.R. China su: Hollow fibers Solid-solid transformations Crystallization Quartz fibers Crystallinity Methanol Gasoline Diffusion sug: subj: Hollow fibers Solid-solid transformations Crystallization Quartz fibers Crystallinity Methanol Gasoline Diffusion ab: We report, for the first time, the preparation of novel c-axis oriented ZSM-5 hollow fibers by a combination of seeding and steam-assisted crystallization method using quartz fibers as the temporary soft substrate and Si source. The growth of such unique structure undergoes the development of a b-axis oriented ZSM-5 cylinder, followed by the growth of c-axis oriented ZSM-5 crystals vertically inside the cylinder and then outside the cylinder, by an in situ solid-solid transformation mechanism. The obtained ZSM-5 hollow fibers are composed of pure hierarchical ZSM-5 crystals with high crystallinity, good structural stability, and high surface area and have potential applications for microreactors, separators, and catalysts. The catalytic performance of ZSM-5 hollow fibers is tested in the methanol to gasoline reaction, as an example of their practical application. They exhibit both higher yield of gasoline and far longer lifetime compared to the conventional ZSM-5 due to the improved mass and heat diffusion rate inside the meso-/macropores of c-axis oriented structure. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y dt: @attributes: year: 2013 holdings: @attributes: islocal: N |
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