Highly resolved solid-state proton magnetic resonance studies of zeolites
Highly resolved solid-state proton magnetic resonance studies of zeolites
复制标题
沸石的高分辨率固态质子磁共振研究
DOI：
10.1039/f19888403777
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发表时间：
1988
期刊：
影响因子：
--
通讯作者：
H. Pfeifer
中科院分区：
文献类型：
--
作者：
H. Pfeifer
通过在真空下对含有脱水沸石或相关催化剂的熔融玻璃安瓿进行魔角旋转，可以获得高分辨率的固态质子磁共振谱，从而可以定量测定布朗斯台德酸位点的浓度和酸度强度。概述了这种新方法的理论背景，并与 i.r. 进行了比较。通过光谱学，提出了一项研究结果，该研究结果定量地将各种催化剂的催化活性与其布朗斯台德酸位点的浓度和酸度强度联系起来。
Through magic-angle spinning of fused glass ampoules containing dehydrated zeolites or related catalysts under vacuum, highly resolved solid-state proton magnetic resonance spectra can be obtained which allow a quantitative determination of both the concentration and strength of acidity of Bronsted-acid sites. The theoretical background of this new method is outlined and after a comparison with i.r. spectroscopy, results of a study are presented which relate the catalytic activity of various catalysts quantitatively with the concentration and the strength of acidity of their Bronsted-acid sites.