کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
64563 48361 2016 7 صفحه PDF سفارش دهید دانلود کنید
عنوان انگلیسی مقاله ISI
Highly efficient and recyclable Ni MOF-derived N-doped magnetic mesoporous carbon-supported palladium catalysts for the hydrodechlorination of chlorophenols
ترجمه فارسی عنوان
کاتالیزورهای بسیار کارآمد پالادیوم پشتیبانی شده با کربن متخلخل مغناطیسی آلاییده شده با N به دست آمده از Ni MOF و قابل بازیافت برای hydrodechlorination کلروفنل ها
کلمات کلیدی
نیکل MOF؛ کربن متخلخل مغناطیسی آلاییده شده با N ؛ کاتالیزور Pd/Ni-mCN ؛ Hydrodechlorination؛ کلروفنل
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
چکیده انگلیسی


• N-doped magnetic mesoporous carbon was prepared through carbonization of Ni MOF.
• Pd/Ni-mCN catalyst showed high catalytic activity in HDC of chlorophenols.
• Pd/Ni-mCN catalyst exhibited high catalytic stability and efficient recyclability.

Ni MOF-derived N-doped magnetic mesoporous carbon-supported Pd nanoparticles (Pd/Ni-mCN) were prepared and used in the hydrodechlorination (HDC) of chlorophenols (CPs) water pollutants with H2 at mild reaction conditions. The Pd/Ni-mCN catalyst was characterized in detail by transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), N2 adsorption/desorption, and vibrating sample magnetometry (VSM). The Pd/Ni-mCN nanocatalyst showed high activity and complete HDC conversion of a target pollutant such as 4-CP after 90 min at ambient conditions. Other CPs compounds such as 2-CP, 3-CP, 2,4-dichlorophenol (2,4-DCP), and 2,4,6-trichlorophenol (2,4,6-TCP) were also tested in the HDC reaction. 2-CP was the only intermediate product in the HDC of 2,4-DCP, with phenol being the final product. The HDC of 2,4,6-TCP proceeded with the intermediate formation of 2-CP and 2,4-DCP, this being potentially originated from the steric hindrance of the ortho-substituted Cl atom. Additionally, Pd/Ni-mCN exhibited high catalytic stability and recyclability. Thus, Pd/Ni-mCN was successfully recycled owing to its superparamagnetic properties and reused for at least five times showing stable conversions (above 99% at 90 min) the HDC of 4-CP.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Catalysis A: Chemical - Volume 423, November 2016, Pages 386–392
نویسندگان
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