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固体核磁共振技术在锡硅分子筛表征中的应用
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Progress in the Studies on Sn-Zeolites by Solid-State Nuclear Magnetic Resonance
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图11. (A) (a, c)葡萄糖和(b, d)果糖分别吸附在(a, b)Si-Beta和(c, d) Sn-Beta分子筛上的13C MAS NMR谱图.(B)果糖吸附在Sn-Beta分子筛上不同CP接触时间[(a) 0.1 ms, (b) 1.0 ms, (c)无CP]的CP MAS NMR谱图(根据文献[ |
Fig.11. (A) 13C MAS NMR of (a) glucose adsorbed into Si-Beta, (b) fructose adsorbed into Si-Beta, (c) glucose adsorbed into Sn-Beta, (d) fructose adsorbed into Sn-Beta. (B) Spectra from fructose adsorbed into Sn-Beta: (a) CP contact time of 0.1 ms; (b) CP contact time of 1.0 ms; and (c) no CP (Reproduced from Ref. [ |
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