کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10239144 46032 2005 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of pressure on H/D exchange during n-octane conversion with Pt-SiO2 catalysts
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Effect of pressure on H/D exchange during n-octane conversion with Pt-SiO2 catalysts
چکیده انگلیسی
For atmospheric conditions a hydrocarbon undergoes dehydrocyclization by a mechanism that involves nearly irreversible adsorption of the reactant. Hence, there is essentially no H/D exchange when a mixture of D2 and hydrocarbon are passed over the catalyst. The current study shows that this is not the case for conversions at higher pressures (6.8 atm; 0.69 MPa). At the higher pressure, there is exchange of H and D to produce a nearly statistical distribution of H and D in the unconverted reactant as well as the products. The pressure dependence is consistent with a mechanism in which the H2(D2) pressure limits the second dehydrogenation step. This mechanism accounts for the H2 dependence of both H/D exchange and the competitive conversion of a mixture of alkane and cycloalkane.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Catalysis A: General - Volume 289, Issue 1, 2 August 2005, Pages 28-36
نویسندگان
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