کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7714380 1497438 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Catalytic reforming of toluene using a nickel ion-exchanged coal catalyst
ترجمه فارسی عنوان
اصلاح کاتالیزوری تولوئن با استفاده از کاتالیزور زغال سنگ تبادل یونی نیکل
کلمات کلیدی
اصلاح بخار، تولوئن، زغال سنگ پایین، مبادله ایون، نیکل، کاتالیزور،
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
چکیده انگلیسی
Coal is able to form metal complexes via ion-exchange associated with the carboxyl functional groups. In the work, this ion exchange behavior is utilized to disperse catalytically active metals across a coal support. Coal is composed of mostly aromatic rings that exhibit attractive interaction with toluene, and which can enhance the chance of catalytic contact, combined with metal carboxylates. Nickel ions are exchanged on several coals of different ranks, where only low rank coals (LRCs) achieve the fine metallic dispersion. ICP analysis and TEM pictures confirm that 5-18 wt% of nano-scale nickel metals are all around the LRC matrix as a result of forming metal carboxylates. The nickel catalyst supported on an LRC (Ni/LRC) is applied to the steam reforming of toluene at various conditions (temperature, space velocity, and S/C ratio). It shows relatively high and consistent activity even at 400 °C during 10 h continuous operation, indicating that carbon deposition is expected to be less severe probably because of the metal-coal support interaction that avoids the formation of free NiO.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 40, Issue 35, 21 September 2015, Pages 11855-11862
نویسندگان
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