کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
58302 | 47146 | 2008 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Transesterification of β-ketoesters catalyzed by hybrid materials based on silica sol–gel
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Transesterification of β-ketoesters catalyzed by hybrid materials based on silica sol–gel Transesterification of β-ketoesters catalyzed by hybrid materials based on silica sol–gel](/preview/png/58302.png)
چکیده انگلیسی
This work shows an alternative process for β-ketoester transesterification using new silica-based hybrid materials as heterogeneous catalysts. The catalysts were synthesized using silica and 3-aminopropyltriethoxysilane or 1,1,1,3,3,3-hexamethyldisilazane as functionalizating agents. β-Ketoesters and alcohols were transesterified in refluxing toluene with reaction times between 4 h and 14 h. Different ketoesters with good performance were obtained. The influence of the catalysts and starting materials on the reaction rate was studied. In all cases, coproduct formation was not observed; the catalysts were recovered and reused without loss of catalytic activity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Today - Volumes 133–135, April–June 2008, Pages 455–460
Journal: Catalysis Today - Volumes 133–135, April–June 2008, Pages 455–460
نویسندگان
Gabriel Sathicq, Leonardo Musante, Gustavo Romanelli, Gustavo Pasquale, Juan Autino, Horacio Thomas, Patricia Vázquez,