کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
51459 | 46843 | 2009 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Acidity of sulfated tin oxide and sulfated zirconia: A view from solid-state NMR spectroscopy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Acidity of sulfated tin oxide and sulfated zirconia: A view from solid-state NMR spectroscopy Acidity of sulfated tin oxide and sulfated zirconia: A view from solid-state NMR spectroscopy](/preview/png/51459.png)
چکیده انگلیسی
Acidic properties of ZrO2, SO42-/ZrO2, SnO2, and SO42-/SnO2 were studied by solid-state NMR spectroscopy. 1H MAS NMR indicated that SO42- was able to react with the hydroxyl groups of ZrO2 and SnO2, leading to the formation of new acid sites. 1H, 13C, and 31P MAS NMR spectra of adsorbed probe molecules indicated that both Brönsted and Lewis acid sites were present on SO42-/ZrO2, but only Brönsted acid site existed on SO42-/SnO2. Acid strength of SO42-/SnO2 was stronger than that of SO42-/ZrO2. Both of them were slightly stronger than that of HZSM-5, but still weaker than that of 100% H2SO4.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Communications - Volume 10, Issue 6, 15 February 2009, Pages 920–924
Journal: Catalysis Communications - Volume 10, Issue 6, 15 February 2009, Pages 920–924
نویسندگان
Huaguang Yu, Hanjun Fang, Hailu Zhang, Bojie Li, Feng Deng,