کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
77302 | 49162 | 2006 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Manganese (III) salen complex anchored onto MCM-41 as catalyst for the aerobic epoxidation of olefins
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Manganese (III) salen complex anchored onto MCM-41 as catalyst for the aerobic epoxidation of olefins Manganese (III) salen complex anchored onto MCM-41 as catalyst for the aerobic epoxidation of olefins](/preview/png/77302.png)
چکیده انگلیسی
An unsymmetrical manganese (III) salen complex was anchored onto the surface of MCM-41 by a multi-step grafting method. The resulting material was characterized by FT-IR, X-ray diffraction, DR UV–Vis, nitrogen adsorption and ICP. The catalytic activity of the immobilized catalyst was tested in the aerobic epoxidation of olefins. The immobilized catalyst showed relatively high activity and epoxide selectivity in the aerobic epoxidation of cyclohexene, styrene, 1,2-dihydronaphthalene and α-methylstyrene. The immobilized catalyst can be reused six times. However, the conversion of cyclohexene decreased from more than 99% in the first run to 73.7% in the sixth, while 64.8% of manganese leaching was observed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Microporous and Mesoporous Materials - Volume 94, Issues 1–3, 8 September 2006, Pages 159–165
Journal: Microporous and Mesoporous Materials - Volume 94, Issues 1–3, 8 September 2006, Pages 159–165
نویسندگان
Yaran Zhang, Jiquan Zhao, Leqin He, Dongmin Zhao, Songmei Zhang,