Characterization and quantification of aluminum species in zeolites using high resolution 27Al solid state NMR

被引：0
|
作者：
Quoineaud, AA
Montouillout, V
Gautier, S
Lacombe, S
Fernandez, C
机构：
[1] Univ Caen Bass Normandie, CNRS, Catalyse & Spectrochim Lab, ISMRA,UMR 6506, F-14052 Caen, France
[2] Inst Francais Petr, F-92852 Rueil Malmaison, France
来源：
IMPACT OF ZEOLITES AND OTHER POROUS MATERIALS ON THE NEW TECHNOLOGIES AT THE BEGINNING OF THE NEW MILLENNIUM, PTS A AND B | 2002年 / 142卷
关键词：
D O I：
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中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Al-27 MAS and MQMAS NMR have been used to identify and quantify framework and extra-framework (EFAL) aluminum in Y zeolites stabilized by steaming and EFAL extraction using various leaching agents. It is useful to characterize contributions of different Al sites in USY. The decomposition of MAS and MQMAS was carried out with the use of a homemade software called MASAI. it takes benefits from the simultaneously analysis of a high resolved 2D-MQMAS and a quantitative MAS spectra. It allows a quantitative assignment of the framework and extra-framework aluminum species. Global and framework Si/Al ratios have been calculated by Al-27 NMR and compared with Si/Al ratio found by X-Ray diffraction and X fluorescence.
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页码：391 / 397
页数：7
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