کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1251270 1496036 2015 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The effect of noble metals on catalytic methanation reaction over supported Mn/Ni oxide based catalysts
ترجمه فارسی عنوان
اثر فلزات نجیب بر واکنش متانات کاتالیزوری بر کاتالیزورهای بر پایه اکسید منیزیم / نیکل حمایت شده
کلمات کلیدی
دی اکسید کربن، اکسید منگنز نیکل، فلز نجیب، متانیت، گاز طبیعی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
چکیده انگلیسی

Carbon dioxide (CO2) in sour natural gas can be removed using green technology via catalytic methanation reaction by converting CO2 to methane (CH4) gas. Using waste to wealth concept, production of CH4 would increase as well as creating environmental friendly approach for the purification of natural gas. In this research, a series of alumina supported manganese–nickel oxide based catalysts doped with noble metals such as ruthenium and palladium were prepared by wetness impregnation method. The prepared catalysts were run catalytic screening process using in-house built micro reactor coupled with Fourier Transform Infra Red (FTIR) spectroscopy to study the percentage CO2 conversion and CH4 formation analyzed by GC. Ru/Mn/Ni(5:35:60)/Al2O3 calcined at 1000 °C was found to be the potential catalyst which gave 99.74% of CO2 conversion and 72.36% of CH4 formation at 400 °C reaction temperature. XRD diffractogram illustrated that the supported catalyst was in polycrystalline with some amorphous state at 1000 °C calcination temperature with the presence of NiO as active site. According to FESEM micrographs, both fresh and used catalysts displayed spherical shape with small particle sizes in agglomerated and aggregated mixture. Nitrogen Adsorption analysis revealed that both catalysts were in mesoporous structures with BET surface area in the range of 46–60 m2/g. All the impurities have been removed at 1000 °C calcination temperature as presented by FTIR, TGA–DTA and EDX data.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Arabian Journal of Chemistry - Volume 8, Issue 5, September 2015, Pages 632–643
نویسندگان
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