کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9760512 | 1498050 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Autoreduction of promoted Ni/γ-Al2O3 during autothermal reforming of methane
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Autoreduction of promoted Ni/γ-Al2O3 during autothermal reforming of methane Autoreduction of promoted Ni/γ-Al2O3 during autothermal reforming of methane](/preview/png/9760512.png)
چکیده انگلیسی
The addition of the noble metals Pt, Pd and Ir to the Ni/γ-Al2O3 catalyst used in the autothermal reforming of methane was investigated, with the aim of making the reaction ignite without previous reduction of the catalyst with H2. In TPR-CH4, the catalysts promoted with Pt and Ir chloride suffered reduction at temperatures lower than 500 °C, while the unpromoted catalyst and those promoted by addition of PdCl2 did not suffer reduction. Pd promoted the reduction only when added as the nitrate. The catalytic tests of intermittent start-up, alternating with air flow, showed results consistent with those from the TPR-CH4. Pt- and Ir-promoted catalysts were active in all the start-ups, producing a great quantity of hydrogen, while the sample promoted via paladium chloride did not produce hydrogen in significant quantity, converting methane only to CO2 and water. The samples promoted via palladium nitrate were very active in autothermal reforming without previous reduction, producing a great quantity of hydrogen.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 139, Issues 1â2, 4 January 2005, Pages 176-181
Journal: Journal of Power Sources - Volume 139, Issues 1â2, 4 January 2005, Pages 176-181
نویسندگان
Joelmir Augusto Costa Dias, José Mansur Assaf,