کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
56310 | 47081 | 2011 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis of a water tolerant solid base of CaO covered with Al2O3
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
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چکیده انگلیسی
Solid base catalysts composed of CaO covered with 5–20 mol% of Al2O3 were prepared by decomposition of Al(OCH(CH3)2)3 over an Ca(OH)2 surface in an ethyl acetate solution, followed by thermal decomposition in air at 773–1023 K. The catalysts containing Al3+ and treated at 773–973 K showed sufficient activity for a retro-aldol reaction to convert diacetone alcohol (4-hydroxy-4-methyl-2-pentanone) into acetone at 299 K. The dissolution of the active component of CaO into a polar solvent was strongly inhibited by a covering of a small amount of Al2O3. The prepared catalysts showed excellent tolerance to H2O contained in the substrate. The catalyst reusability was also examined.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Today - Volume 164, Issue 1, 30 April 2011, Pages 131–134
Journal: Catalysis Today - Volume 164, Issue 1, 30 April 2011, Pages 131–134
نویسندگان
Hiromi Matsuhashi, Tetsuro Fujita,