کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9617544 | 49164 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mn(III) salen complex immobilised into pillared clays by in situ and simultaneous pillaring/encapsulation procedures
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
All new materials, [Mn(saldPh)Cl]@Al-WYO_A, [Mn(saldPh)Cl]@Al-WYO_B, and [Mn(saldPh)Cl]@Al-WYO_C show catalytic activity in the epoxidation of styrene at room temperature using PhIO as oxygen source in acetonitrile. The solids presented high styrene epoxide selectivity and were reused for four times, but a small decrease in the catalytic activity was observed. Nevertheless, the catalysts prepared by simultaneous pillaring/encapsulation, methods B and C, are more stable upon reuse than the catalyst prepared by method A. FTIR spectra of catalysts after the catalytic reactions suggest that during the reaction no structural changes of the PILC took place, but some active phase leaching and deactivation have occurred which are responsible for the decrease in the catalytic activity on reutilisation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Microporous and Mesoporous Materials - Volume 86, Issues 1â3, 28 November 2005, Pages 295-302
Journal: Microporous and Mesoporous Materials - Volume 86, Issues 1â3, 28 November 2005, Pages 295-302
نویسندگان
Beatriz Cardoso, João Pires, Ana P. Carvalho, Iwona Kuźniarska-Biernacka, Ana R. Silva, Baltazar de Castro, Cristina Freire,