کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
210946 | 461736 | 2009 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Highly selective synthesis of dimethyl carbonate from urea and methanol catalyzed by ionic liquids
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
Direct synthesis of dimethyl carbonate from methanol and urea using ionic liquids, such as Et3NHCl–FeCl3, Et3NHCl–ZnCl2, Et3NHCl–CuCl2, Et3NHCl–SnCl2 and emimBr–ZnCl2, as catalysts were investigated. Among the ionic liquids, Et3NHCl–ZnCl2 or emimBr–ZnCl2 exhibited higher activity for the synthetic reaction and surprisingly high selectivity to DMC. The effects of the various reaction conditions, i.e. reaction temperature, molar ratio of methanol to urea, and amount and composition of catalysts, on the synthesis of DMC were discussed in a systematic way. The reaction mechanism and the reasons why raised activity and high selectivity of the catalyst are maintained were explored.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel Processing Technology - Volume 90, Issue 10, October 2009, Pages 1198–1201
Journal: Fuel Processing Technology - Volume 90, Issue 10, October 2009, Pages 1198–1201
نویسندگان
Hong Wang, Bin Lu, Xiaoguang Wang, Jiawei Zhang, Qinghai Cai,