کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
59147 1419420 2016 7 صفحه PDF سفارش دهید دانلود کنید
عنوان انگلیسی مقاله ISI
Effects of zinc on Fe-based catalysts during the synthesis of light olefins from the Fischer-Tropsch process
ترجمه فارسی عنوان
اثرات روی بر روی کاتالیزورهای بر پایه آهن در طول سنتز الفین های نور از فرآیند فیشر _ تروپش
کلمات کلیدی
پروموتر روی؛ آهن مبتنی بر کاتالیست؛ الفین نور؛ سنتز فیشر تروپش؛ روش های مایکروفر هیدروترمال
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
چکیده انگلیسی

Fe-based catalysts for the production of light olefins via the Fischer-Tropsch synthesis were modified by adding a Zn promoter using both microwave-hydrothermal and impregnation methods. The physicochemical properties of the resulting catalysts were determined by scanning electron microscopy, the Brunauer-Emmett-Teller method, X-ray diffraction, H2 temperature-programed reduction and X-ray photoelectron spectroscopy. The results demonstrate that the addition of a Zn promoter improves both the light olefin selectivity over the catalyst and the catalyst stability. The catalysts prepared via the impregnation method, which contain greater quantities of surface ZnO, exhibit severe carbon deposition following activity trials. In contrast, those materials synthesized using the microwave-hydrothermal approach show improved dispersion of Zn and Fe phases and decreased carbon deposition, and so exhibit better CO conversion and stability.

Graphical AbstractFe-based Fischer-Tropsch catalysts for light olefins synthesis were modified by adding a Zn promoter using either microwave-hydrothermal or impregnation methods. The catalysts prepared by the microwave-hydrothermal technique exhibited high catalytic activity and good stability with significantly lower carbon deposition.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chinese Journal of Catalysis - Volume 37, Issue 4, April 2016, Pages 510–516
نویسندگان
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