کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9608012 | 46065 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Selective epoxidation of allyl acetate with tert-butyl hydroperoxide over MoO3/MgO
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Selective epoxidation of allyl acetate with tert-butyl hydroperoxide over MoO3/MgO Selective epoxidation of allyl acetate with tert-butyl hydroperoxide over MoO3/MgO](/preview/png/9608012.png)
چکیده انگلیسی
Highly selective epoxidation of allyl acetate was carried out over MoO3/MgO using tert-butyl hydroperoxide as an oxidizing agent. The catalytically active species was identified as monolayer MgMoO4 on MgO. MgO with large pores is suitable for selective epoxide formation. The highest yield of glycidyl acetate was obtained over 7Â wt.% MoO3/MgO, in which MgMoO4 species were highly dispersed on the surface of MgO. Trialkyl borates were good promoters for selective epoxide formation. Among them, triisopropyl borate afforded the highest yield of 92%. 1H and 11B NMR measurements of a homogeneous MoO2(acac)2-B(OBun)3-(t-C4H9OOH) system showed that alkyl groups of the borate exchange with t-butyl hydroperoxyl group, and that the boron atom interacts with the oxygen of MoO, promoting reactivity of an oxygen atom in the hydroperoxyl group to attack the double bond of allyl acetate.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Catalysis A: General - Volume 283, Issues 1â2, 8 April 2005, Pages 117-124
Journal: Applied Catalysis A: General - Volume 283, Issues 1â2, 8 April 2005, Pages 117-124
نویسندگان
Kenta Shimura, Hiroyoshi Kanai, Kazunori Utani, Kazuo Matsuyama, Seiichiro Imamura,