کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10263640 | 457135 | 2005 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of coke deposition on transport and sorption in FCC catalysts studied by temporal analysis of products
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of coke deposition on transport and sorption in FCC catalysts studied by temporal analysis of products Effect of coke deposition on transport and sorption in FCC catalysts studied by temporal analysis of products](/preview/png/10263640.png)
چکیده انگلیسی
An industrial FCC catalyst has been exposed in a MAT reactor to typical heavy fractions to obtain samples with different coke contents. These samples were investigated in the TAP reactor with toluene as probe molecule. A mathematical model has been developed that allows estimating diffusion coefficients in the meso- and micropores as well as the sorption parameters. Modeling of the TAP data provides insight into the deactivation mechanism due to coke deposition. At low coke content (<2.6wt%), the enthalpy for toluene adsorption drops rapidly with increasing coke content indicating preferential blocking of the strongest acid sites. At higher coke contents (>2.6wt%), blocking of the micropores occurs. The model describes the data adequately with physical meaningful parameters.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Science - Volume 60, Issue 4, February 2005, Pages 1007-1017
Journal: Chemical Engineering Science - Volume 60, Issue 4, February 2005, Pages 1007-1017
نویسندگان
Y. Schuurman, C. Delattre, I. Pitault, J.P. Reymond, M. Forissier,