کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9610253 | 47163 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
n-Hexane isomerization on Ni-Pt catalysts/supported on HUSY zeolite: The influence from a metal content
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Bi-functional catalysts were prepared to contain Ni, Pt or both, supported on a HUSY zeolite, with the following metal contents: catalysts 30, 130 and 180 Ã 10â6 atg metal/g catalyst. These catalysts resulted from a competitive ion exchange with the use of aqueous solutions from [Ni(NH3)6]Cl2 and [Pt(NH3)4]Cl2 complexes. The catalysts were provided with a scheduled temperature reduction (TPR) and subjected to a catalytic assessment on the n-hexane isomerization at 250 °C and 1 atm. TPR results showed larger reducibility of Ni+2 cations in the presence of Pt. Bi-metallic Ni-Pt catalysts showed to have smaller deactivation and much higher activity compared to monometallic Ni catalysts. The selectivity for the production of di-ramified alkanes increases as the Ni content increases.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Today - Volumes 107â108, 30 October 2005, Pages 693-698
Journal: Catalysis Today - Volumes 107â108, 30 October 2005, Pages 693-698
نویسندگان
Carlos M.N. Yoshioka, Teresita Garetto, Dilson Cardoso,