این سایت در حال حاضر پشتیبانی نمی شود و امکان دارد داده های نشریات بروز نباشند
Iranian Journal of Chemistry and Chemical Engineering، جلد ۳۴، شماره ۱، صفحات ۱-۹
عنوان فارسی
چکیده فارسی مقاله
کلیدواژه‌های فارسی مقاله
عنوان انگلیسی Synthesis and Characterization of Ru/Al2O3 Nanocatalyst for Ammonia Synthesis
چکیده انگلیسی مقاله Ru/Al2O3 catalysts were prepared by conventional incipient wetness impregnation as well as colloid deposition of RuCl3 precursor via in situ reduction with ethylene glycol (polyol) method on alumina support. The samples were characterized by TEM, XRD and TPR techniques. The catalytic performance tests were carried out in a fixed-bed micro-reactor under different operating conditions. Ethylene glycol as the reducing agent in the polyol methodproduced well-dispersed and uniform ruthenium nanoparticles with an average diameter of 7 nm supported on Al2O3. In conventional method, however, reduction by hydrogen resulted in considerably larger particles with average size of 12 nm.The Ru/Al2O3 catalyst prepared by polyol method exhibited three-fold higher activity in ammonia synthesis compared to the catalyst prepared by conventional method. The turnover frequency ratio of ammonia synthesis of polyol to conventional catalyst was estimated to be 2.1 at 450°C implying the reaction is structure-sensitive over Ru-based catalysts.
کلیدواژه‌های انگلیسی مقاله
نویسندگان مقاله نقی سعادتجو |
department of applied chemistry, faculty of chemistry, semnan university, semnan, i.r. iran
سازمان اصلی تایید شده: دانشگاه سمنان (Semnan university)

علی جعفری |
department of applied chemistry, faculty of chemistry, semnan university, semnan, i.r. iran
سازمان اصلی تایید شده: دانشگاه سمنان (Semnan university)

سعید sahebdelfar |
catalyst research group, petrochemical research and technology company, national petrochemical company, p.o. box 14358–84711 tehran, i.r. iran

نشانی اینترنتی http://www.ijcce.ac.ir/article_12613_65bcea4c9e48a86d88676bbc8503f63f.pdf
فایل مقاله فایلی برای مقاله ذخیره نشده است
کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده
نوع مقاله منتشر شده
برگشت به: صفحه اول پایگاه   |   نسخه مرتبط   |   نشریه مرتبط   |   فهرست نشریات