کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
6474463 1424961 2017 6 صفحه PDF سفارش دهید دانلود رایگان
عنوان انگلیسی مقاله ISI
SAPO-34 zeolite encapsulated Fe3C nanoparticles as highly selective Fischer-Tropsch catalysts for the production of light olefins
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موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
SAPO-34 zeolite encapsulated Fe3C nanoparticles as highly selective Fischer-Tropsch catalysts for the production of light olefins
چکیده انگلیسی


- A tailor-made encapsulated catalyst with SAPO-34 shell for FTS were synthesized.
- The formation of C6+ hydrocarbons on core-shell catalyst is completely suppressed.
- Modified core-shell catalyst by K shows higher C2=-C4= selectivity and O/P ratio.

A tailor-made encapsulated catalyst with SAPO-34 zeolite shell has been synthesized over Fe3C nanoparticles to form a core-shell structure via surface modification of Si-OH groups. The core-shell structure catalyst Fe/C@Si-SAPO are investigated via Fischer-Tropsch synthesis to evaluate their catalytic performance on the direct synthesis of light olefins from syngas. In comparison with the simple mixing structure of the traditional mixture catalyst, the special core-shell of this SAPO-34 zeolite capsule catalyst has an obvious confinement effect on the controlled synthesis of light olefins from syngas. Interestingly, it gives a completely different product distribution from the traditional mixture catalyst and the formation of C6+ hydrocarbons is completely suppressed. In addition, the Fe/C@Si-SAPO catalyst promoted by K were found to decrease the methane selectivity, increase the olefin/paraffin ratio and shift the product selectivity to light olefins during FTS.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 203, 1 September 2017, Pages 811-816
نویسندگان
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