Proton sites in Keggin heteropoly acids from17O NMR
Proton sites in Keggin heteropoly acids from17O NMR
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来自 17O NMR 的 Keggin 杂多酸中的质子位点
DOI:
10.1007/bf00808336
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发表时间:
1995
影响因子:
2.8
通讯作者:
H. Bekkum
中科院分区:
文献类型:
--
作者:
I. Kozhevnikov;A. Sinnema;H. Bekkum
The structure of the bulk proton sites in dehydrated solid Keggin-type heteropoly acids (HPA) H3PW12O40and H4SiW12O40was determined by17O NMR. The terminal W=O oxygen atoms in Keggin heteropolyanions were found to be the predominant protonation sites. The protonation of HP As in solution is also discussed on the basis of17O NMR data.