Sol-Gel Preparation of Pd Nanoparticle over γ-Al2O3 and its Application in Hydrogenation of Nitrobenzene
عنوان مقاله: Sol-Gel Preparation of Pd Nanoparticle over γ-Al2O3 and its Application in Hydrogenation of Nitrobenzene
شناسه ملی مقاله: JR_MBT-4-1_008
منتشر شده در شماره 1 دوره 4 فصل در سال 1399
شناسه ملی مقاله: JR_MBT-4-1_008
منتشر شده در شماره 1 دوره 4 فصل در سال 1399
مشخصات نویسندگان مقاله:
Hekmat Abdollah - Department of Chemistry, Kabul University, Afghanistan
خلاصه مقاله:
Hekmat Abdollah - Department of Chemistry, Kabul University, Afghanistan
Aniline was synthesized by catalytic hydrogenation of nitrobenzene (NB) on nano-sized Pd on γ-Al2O3 catalyst prepared by sol-gel method. The catalyst was characterized by SEM and XRD. The average particle of Pd catalyst was 36 nm. In hydrogenation reaction of nitrobenzene, the hydrogenation rate was zero-order with respect to nitrobenzene and increased with increasing of hydrogen pressure. Compared with commercial Pd/γ-Al2O3, catalytic activity and selectivity of the as-prepared Pd/γ-Al2O3 is superior. The reason proposed for higher catalytic activity of nano-sized Pd is the small particle size and highdensity surface defects.
کلمات کلیدی: Nitrobenzene, aniline, Nano-sized Pd on γ-Al2O3, Catalytic Hydrogenation
صفحه اختصاصی مقاله و دریافت فایل کامل: https://civilica.com/doc/1016982/