کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
147335 456389 2014 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Direct use of as-synthesized multi-walled carbon nanotubes for carbon dioxide reforming of methane for producing synthesis gas
ترجمه فارسی عنوان
استفاده مستقیم از نانولوله های کربنی چند منظوره به عنوان سنتز شده برای رفع متابولیسم دی اکسید کربن متان برای تولید گاز سنتز
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی

In this study, laboratory prepared multi-walled carbon nanotubes (MWCNTs) over Co–Mo/MgO catalysts were used as novel nanocomposite catalysts for carbon dioxide reforming of methane (CRM). The influence of acid treatment process on the catalyst performance was thoroughly investigated. It was determined that Co–Mo/MgO present in the as-synthesized MWCNTs was responsible for high catalytic activity of the reforming reaction. The performance of the nanocomposite catalysts was compared with the conventional Co–Mo/MgO catalysts prepared by sol–gel method, revealing that MWCNTs played a supporting role in preventing catalyst deactivation. The nanocomposite catalysts gave CH4 and CO2 conversions of 97% and 98%, respectively, for the CRM reactions performed at 850 °C with a GHSV of 120 L/h gcat and a CH4/CO2 ratio of 1 under atmospheric pressure. Stability tests, carbon deposition and characteristics of the nanocomposite catalysts were investigated up to 100 h of reaction. The proposed reaction mechanism for this catalyst shows that CH4 decomposition and carbon gasification by CO2 were the two important side-reactions.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 257, 1 December 2014, Pages 200–208
نویسندگان
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