کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
63443 47688 2006 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Spontaneous catalytic activation of Ni3Al thin foils in methanol decomposition
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Spontaneous catalytic activation of Ni3Al thin foils in methanol decomposition
چکیده انگلیسی

Methanol decomposition was carried out over flat cold-rolled foils of intermetallic compound Ni3Al in a temperature range 513–793 K. The methanol decomposition into H2 and CO was effectively catalyzed at 713–793 K, without any need for coating catalyst layers on the foil surface before reaction. Both catalytic activity and selectivity to H2 and CO production increased with time during the initial period of reaction, indicating that the Ni3Al foils were spontaneously activated under the reaction conditions. Analysis of the catalytic reaction revealed that the methanol decomposition accompanied three minor side reactions: the Boudouard reaction, (reverse) water–gas shift reaction, and methanation. Surface analyses revealed that fine Ni particles dispersed on carbon nanofibers formed on the Ni3Al foils during the reaction at 713–793 K. We attribute the high catalytic performance at 713–793 K to the gradual formation of this nanostructure.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Catalysis - Volume 243, Issue 1, 1 October 2006, Pages 99–107
نویسندگان
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