کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
56578 | 47087 | 2010 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
New Nb and Ta–FAU zeolites—Direct synthesis, characterisation and surface properties
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: New Nb and Ta–FAU zeolites—Direct synthesis, characterisation and surface properties New Nb and Ta–FAU zeolites—Direct synthesis, characterisation and surface properties](/preview/png/56578.png)
چکیده انگلیسی
Niobium and tantalum containing Y zeolites were prepared in a one-pot synthesis and via solid-state ion exchange. The first method led to the incorporation of Nb and Ta into the zeolite framework as documented by XRD, UV–vis, XPS and test reactions. The efficiency of the metal introduction was higher for tantalum than for niobium. The presence of Lewis acid sites was proved by pyridine adsorption and cracking of cumene, whereas basic hydroxyls on the surface were evaluated on the basis of 3-methyl-2-cyclopentenone formation in the cyclisation of acetonyl acetone.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Today - Volume 158, Issues 1–2, 5 December 2010, Pages 170–177
Journal: Catalysis Today - Volume 158, Issues 1–2, 5 December 2010, Pages 170–177
نویسندگان
M. Trejda, A. Wojtaszek, A. Floch, R. Wojcieszak, E.M. Gaigneaux, M. Ziolek,