کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1261163 1496520 2015 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation of mesoporous zirconium incorporated MCM-48 solid acid catalyst and its catalytic activity for alkylation of phenol with tert-butyl alcohol
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Preparation of mesoporous zirconium incorporated MCM-48 solid acid catalyst and its catalytic activity for alkylation of phenol with tert-butyl alcohol
چکیده انگلیسی

Zirconium incorporated mesoporous MCM-48 solid acid catalysts with the different Si/Zr molar ratios were prepared by modification with H2SO4 and NH4NO3 solution, respectively. Their physicochemical properties were characterized by XRD, TEM, NH3–TPD and N2 physical adsorption. The catalytic performances of these catalysts were investigated by using the alkylation reaction of phenol and tert-butyl alcohol as the target reaction. The results reveal that the SO42−/ZrMCM-48 and H-ZrMCM-48 catalysts still maintained the cubic mesporous structure of MCM-48, but the mesoporous ordering decreased. Under comparable conditions, the catalytic activity of SO42−/ZrMCM-48(25) solid acid catalyst is the highest among all catalysts. The lower reaction temperature is favorable for formation of the 2,4-DTBP and the 4-TBP is easily formed at the higher reaction temperature.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the Association of Arab Universities for Basic and Applied Sciences - Volume 17, April 2015, Pages 57–65
نویسندگان
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