کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9623753 | 456583 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Kinetics of batch alkylation of phenol with tert-butyl alcohol over a catalyst synthesized from coal fly ash
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
Alkylation of phenol with tert-butyl alcohol (TBA) was carried out in batch mode over a zeolite catalyst, synthesized from fly ash by hydrothermal treatment. The effects of various parameters, such as reaction temperature, reactant ratio (molar ratio of phenol to tert-butyl alcohol) and catalyst loading on the rate of reaction of phenol were studied with the synthesized catalyst. The alkylation reaction was found to be surface reaction controlled with negligible mass transfer resistance. An Langmuir-Hinshelwood-Hougen-Watson (L-H-H-W) surface reaction controlled kinetic model was developed and the model parameters were estimated. From the estimated kinetic constant at different temperatures, the activation energy of the phenol alkylation reaction was determined to be 37.3Â kJ/mol.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 112, Issues 1â3, 1 September 2005, Pages 109-115
Journal: Chemical Engineering Journal - Volume 112, Issues 1â3, 1 September 2005, Pages 109-115
نویسندگان
Keka Ojha, Narayan C. Pradhan, Amar Nath Samanta,