کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
51575 | 46847 | 2011 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Unexpected methanol-to-olefin conversion activity of low-silica aluminophosphate molecular sieves
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Low-silica AlPO-18, AlPO-34, and AlPO-41 with Brønsted site densities of 0.006 to 0.014 mmol/g have been applied as methanol-to-olefin (MTO) conversion catalysts. At 673 K, AlPO-18 and AlPO-34 are active, while AlPO-41 did not exhibit obvious MTO activity. In situ UV/Vis spectroscopy of working AlPO-18 and AlPO-34 shows bands of aromatic compounds, but no formation of these species was found for AlPO-41 with one-dimensional 10-ring pores. This study indicates that the MTO reaction over aluminophosphates requires a minimum Brønsted site density and a suitable framework topology with cages like in AlPO-18 and AlPO-34 allowing the formation and stabilization of aromatics.
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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Communications - Volume 16, Issue 1, 30 November 2011, Pages 124–127
Journal: Catalysis Communications - Volume 16, Issue 1, 30 November 2011, Pages 124–127
نویسندگان
Weili Dai, Niu Li, Landong Li, Naijia Guan, Michael Hunger,