کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9610112 | 47167 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hydrothermal synthesis and characterization of ZSM-5 coatings on a molybdenum support and scale-up for application in micro reactors
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A procedure has been developed to grow ZSM-5 crystals in situ on a molybdenum (Mo) support. The high heat conductivity (138 W/mK) and high mechanical stability at elevated temperatures of the Mo support allow the application of ZSM-5 coatings in micro reactors for high temperature processes involving large heat effects. The effect of the synthesis mixture composition on ZSM-5 coverage and on the uniformity of the ZSM-5 coatings was investigated on plates of 10 Ã 10 mm2. Ratios of H2O/Si = 50, Si/Al = 25, and TPA/Al = 2.0 were found to be optimal for the formation of uniform coatings of 6 g/m2 at a temperature of 150 °C and a synthesis time of 48 h. Scaling up of the synthesis procedure on 72 Mo plates of 40 Ã 9.8 Ã 0.1 mm3 resulted in a uniform coverage of 14.8 ± 0.4 g/m2. The low deviation per individual plate (<3%) indicates the uniformity of the synthesis conditions in the scale-up procedure.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Today - Volume 110, Issues 1â2, 15 December 2005, Pages 38-46
Journal: Catalysis Today - Volume 110, Issues 1â2, 15 December 2005, Pages 38-46
نویسندگان
M.J.M. Mies, J.L.P. van den Bosch, E.V. Rebrov, J.C. Jansen, M.H.J.M. de Croon, J.C. Schouten,