Variable Temperature ^1H MAS NMR : A Powerful Tool for the Investigation of Dynamic Properties of Acidic Protons in Zeolites

变温 ^1H MAS NMR：研究沸石中酸质子动态性质的强大工具

• 批准号: 09650857
• 负责人: BABA Toshihide
• 金额: $ 2.18万
• 依托单位: TOKYO INSTITUTE OF TECHNOLOGY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09650857/
• 关键词: ^1H MAS NMR; Zeolite; Acidic Protons; Solid-acid; Catalyst; Metallisilocate; モビリティー

The dynamic nature of the protons in zeolites such as H-ZSM-5, metallosilicates molecular sieves and heteropoly compounds was examined by temperature dependence of ^1H MAS NMR in the range of 298 and 473 K.The temperature dependent line shape of ^1H MAS NMR spectra of acidic protons in zeolites showed the first and unambiguous evidence for proton migration in zeolite structure. The dynamic property of protons was a more sensitive measure for the activity of protons than the static parameters such as NMR chemical shift and IR band position of OH bonds.The variable temperature ^1H MAS NMR is a very useful technique for understanding dynamic properties of protons in solid-acids. The dynamic property is an important factor influencing of the catalytic activity of a solid-acid catalyst.

通过 ^1H MAS NMR的温度依赖性在298 k和473 k的范围内检查了沸石中质子的动态性质，例如H-ZSM-5，金属脱水的分子筛子和异位化合物。质子的动态特性比静态参数（例如NMR化学位移和OH键的IR频带位置）对质子的活性进行了更敏感的度量。可变温度 ^1H MAS NMR是一种非常有用的技术，可用于了解固体酸中质子的动态特性。动态特性是影响固体催化剂催化活性的重要因素。

项目成果

Toshihide Baba, Norito Komatsu and Yoshio Ono: "Nature of the Acidic protons in H-Mordenite H-MCM-22As Studied by Variable Temperature ^1H MAS NMR" Microporous Mater. 22. 203-210 (1998)

Toshihide Baba、Norito Komatsu 和 Yoshio Ono：“通过变温 ^1H MAS NMR 研究的 H-丝光沸石 H-MCM-22As 中酸性质子的性质”微孔材料。

Toshihide Baba: "Mobility of the Acidic Protons in H-ZSM-5 As Studied by Variable Temperature ^1H MAS NMR" J.Phys.Chem.B. 102. 804-808 (1998)

Toshihide Baba：“通过变温 ^1H MAS NMR 研究 H-ZSM-5 中酸性质子的迁移率”J.Phys.Chem.B。

Toshihide Baba: "Nature of the Audic Protons in H-mordenite and H-MCM-22 as Studied by Variable Temperature ^1H MAS NMR" Microprous Mesoporous Mater.22. 203-210 (1998)

Toshihide Baba：“通过变温 ^1H MAS NMR 研究 H-丝光沸石和 H-MCM-22 中的 Audic 质子的性质”Microprous Mesoporous Mater.22。

Toshihide Baba, Norito Kumatsu, Yoshio Ono: "Mobility of the Acidic Phrtons in H-Zsiu-5 As Studied by Variabce Temperature ^1H MAS NMR" Journul of Physicul Chemistry. 印刷中.

Toshihide Baba、Norito Kumatsu、Yoshio Ono：“通过温度变化 ^1H MAS NMR 研究 H-Zsiu-5 中酸性 Phrton 的迁移率”物理化学杂志正在出版。