کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9610338 | 47172 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Lanthanum ferrite membranes in ammonia oxidation
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Lanthanum ferrite membranes in ammonia oxidation Lanthanum ferrite membranes in ammonia oxidation](/preview/png/9610338.png)
چکیده انگلیسی
This paper reports the application of mixed conducting perovskite membranes for simultaneous in situ O2 separation and catalytic oxidation of ammonia to nitric oxide. Calcium and strontium-substituted lanthanum ferrite perovskites (La1âxAxFeO3âδ, with A = Ca, Sr and x = 0.1-0.2) were prepared by a conventional wet complexation route with citric acid. Dense membrane disks were obtained by uniaxial pressing of the calcined powders followed by sintering. The oxidation of ammonia over these catalytic membranes in the temperature range of 1000-1333 K leads to NO selectivities up to 98% with no N2O production, showing stable performance during several days on stream. This novel process demonstrates the great potential for intensification of nitric acid manufacture into miniaturized plants and is considered to be particularly attractive for on-site production of this important bulk chemical.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Today - Volume 105, Issues 3â4, 15 August 2005, Pages 436-442
Journal: Catalysis Today - Volume 105, Issues 3â4, 15 August 2005, Pages 436-442
نویسندگان
Javier Pérez-RamÃrez, Bent Vigeland,