کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
51302 | 46838 | 2009 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis of paracetamol by liquid phase Beckmann rearrangement of 4-hydroxyacetophenone oxime over H3PO4/Al-MCM-41
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
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چکیده انگلیسی
Paracetamol was synthesized via the environmentally benign liquid phase Beckmann rearrangement of 4-hydroxyacetophenone oxime over Al-MCM-41 modified with H3PO4. Al-MCM-41 materials were synthesized using different aluminium sources. Aprotic solvents with a high dielectric constant or high polar nature are preferred for this transformation, acetone being the optimal solvent. The conversion of 4-hydroxyacetophenone oxime to paracetamol increased with the H3PO4 content in the catalysts up to a maximum value for a H3PO4 loading of 30 wt% and decreased for higher loadings. Recovery of the catalysts was also investigated.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Communications - Volume 10, Issue 11, 10 June 2009, Pages 1486–1492
Journal: Catalysis Communications - Volume 10, Issue 11, 10 June 2009, Pages 1486–1492
نویسندگان
M. Ghiaci, H. Aghaei, M. Oroojeni, B. Aghabarari, V. Rives, M.A. Vicente, I. Sobrados, J. Sanz,