کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1283061 | 1497622 | 2009 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Catalytic behavior of Ni/ZrxTi1âxO2 and the effect of SiO2 doping in oxidative steam reforming of n-butane
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Catalytic behaviors of TiO2-, Zr0.5Ti0.5O2-, and ZrO2-supported Ni catalysts were investigated for oxidative steam reforming of n-C4H10 at 723Â K. The composite oxide support, Zr0.5Ti0.5O2, shows high specific surface area (136Â m2/g), leading to fine Ni particles. Thus, the Ni/Zr0.5Ti0.5O2 catalyst exhibits higher and more stable activity than that exhibited by other catalysts. However, relatively large amounts of coke are deposited on the catalyst during reaction. Thus, to retard carbon deposition, the influence of SiO2 additive was studied. Large amounts of SiO2 additive (5 or 10Â mol%) decrease initial activity; at 10Â mol%, degradation is also induced by oxidation of Ni0. However, small amounts of SiO2 additive (1.5Â mol%) effectively retard coking without lowering initial activity. The resultant Ni/Zr0.5Ti0.5O2-SiO2 (1.5Â mol%) catalyst exhibits high and stable activity without coking.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 34, Issue 19, October 2009, Pages 8046-8052
Journal: International Journal of Hydrogen Energy - Volume 34, Issue 19, October 2009, Pages 8046-8052
نویسندگان
Fumiaki Sago, Sho Fukuda, Katsutoshi Sato, Katsutoshi Nagaoka, Hiroyasu Nishiguchi, Yusaku Takita,