کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6456539 1420405 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Strategy to design zeolite catalysts in the presence of biomass
ترجمه فارسی عنوان
استراتژی برای طراحی کاتالیزورهای زئولیت در حضور زیست توده
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
چکیده انگلیسی


- LTA, GIS and MFI zeolite syntheses using biomass.
- Self-assembly mechanism based on bio-sourced secondary template (BSST).
- Higher ammonium ions exchange capacity with (BSST) LTA zeolite.
- Lignin-prepared MFI zeolites led to selectivities >90% in the gasoline fraction.

LTA, GIS, *BEA and MFI zeolites have been successfully prepared using sugar cane bagasse as a hard templating agent as well as after alkaline hydrolysis of those biomass residues. Depending on the zeolite topology chosen, different effects could be highlighted: susceptibility to crystal intergrowths (LTA), formation of macroporous micron-sized assemblies (GIS), or significant impact on MFI crystal morphologies.The LTA zeolite series was used in ammonia ionic exchange experiments. A definite enhancement in the total NH4+-adsorption capacity could be evidenced for a biomass hydrolysate structured sample.In the case of MFI zeolites, different catalytic activities and stabilities were achieved in the methanol conversion into hydrocarbons. Likewise, drastic changes were observed in the selectivities, ranging from an expected methanol-to-olefins (MTO) behaviour for highly siliceous zeolites, to a close to 90% selectivity toward C5+ gasoline fraction (MTG) for counterparts with low Si/Al-ratios.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Microporous and Mesoporous Materials - Volume 254, December 2017, Pages 28-36
نویسندگان
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