固体核磁共振技术在锡硅分子筛表征中的应用
肖瑶1,2,夏长久3,易先锋1,*(
),刘凤庆1,2,刘尚斌4,郑安民1,*()
),刘凤庆1,2,刘尚斌4,郑安民1,*()
Progress in the Studies on Sn-Zeolites by Solid-State Nuclear Magnetic Resonance
Yao XIAO1,2,Chang-jiu XIA3,Xian-feng YI1,*(),Feng-qing LIU1,2,Shang-bin LIU4,An-min ZHENG1,*()
),Feng-qing LIU1,2,Shang-bin LIU4,An-min ZHENG1,*()
图3. (a) 脱水Sn-Beta水合前与在水汽中水合70 h的1H MAS NMR谱图；(b) Sn-Beta不同水合时间的1H MAS NMR谱图；(c) 1H和119Sn NMR归一化积分面积与水合时间的关系；(d, e)脱水Sn-Beta两种不同的水合机制（根据文献[
Fig.3. (a) 1H MAS NMR spectra of dehydrated Sn-Beta before and after exposure to water vapors for 70 h; (b) Time-resolved 1H MAS NMR spectra acquired during the hydration of Sn-Beta; (c) Normalized intensities of 1H and 119Sn MAS NMR signals vs. hydration time; (d, e) Two different hydration mechanism in dehydrated Sn-Beta (Reproduced from Ref. [
