کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
49272 46731 2016 5 صفحه PDF ندارد دانلود رایگان
عنوان انگلیسی مقاله
Effect of catalyst on coal char structure and its role in catalytic coal gasification
ترجمه فارسی عنوان
اثر کاتالیزور بر ساختار کاراکتر زغال سنگ و نقش آن در گازسازی زغال سنگ کاتالیزوری
کلمات کلیدی
گازسازی زغال سنگ کاتالیستی؛ XRD؛ رامان؛ ساختار؛ XPS؛ نقش
Catalytic coal gasification; XRD; Raman; Structure; XPS; Role
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
چکیده انگلیسی


• Potassium carbonate can inhibit the graphitization and condensation of coal char in pyrolysis.
• K-Char may be the active intermediate in catalytic coal gasification. It is easier for H2O to react with K-Char intermediate in catalytic coal gasification.

The structure of the coal chars with and without catalyst was characterized using X-ray diffraction and laser Raman techniques. The catalyst changes the structure of the organic unit in coal char. The mechanism by which the catalyst affects the structure of coal char in pyrolysis was investigated by X-ray photoelectron spectroscopy. For the first time, the direct evidence of electron transfer in catalyst–coal interactions was obtained, and a K-Char intermediate forms. This makes it easier for H2O to attack the K-Char intermediate, thus increasing the gasification reactivity of coal char.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Communications - Volume 79, 5 April 2016, Pages 1–5
نویسندگان
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