SOLID-STATE NMR-STUDIES OF H-1 SPIN-DIFFUSION IN ADSORBED ORGANIC-MOLECULES
文献类型：期刊论文
| 作者 | DENG, F; HU, JZ; XIONG, JC; DU, YR |
| 刊名 | SOLID STATE NUCLEAR MAGNETIC RESONANCE
 |
| 出版日期 | 1993-07-01 |
| 卷号 | 2期号:3页码:97-103 |
| 关键词 | H-1 Spin Diffusion Adsorption Charcoal Sio2 Al2o3 |
| ISSN号 | 0926-2040 |
| 文献子类 | Article |
| 英文摘要 | H-1 spin diffusion times of toluene (MB) and tetrahydrofuran (THF) adsorbed on a series of porous solids (charcoal, SiO2 and Al2O3) were measured by a selective inversion technique. The experimental results show that they cover a wide range (from less than one millisecond to several hundreds of milliseconds). For all samples, a tri-exponential behavior was observed in the magnetization recovery processes of the negative peaks. This is attributed to the existence of the two different kinds of spin diffusion processes in addition to the T1 relaxation. One is assigned to the intermolecular spin diffusion between the surface acidic protons of the adsorbent and the organic molecules adsorbed on the solid surface, the other to the intramolecular spin diffusion of adsorbed molecules. Due to hydrogen bonding between the surface hydroxyl groups and the adsorbate, the intermolecular spin diffusion of THF adsorbed on various solids is more effective compared to that of adsorbed MB. In addition, the intermolecular H-1 spin diffusion between charcoal and adsorbed THF molecules was confirmed by indirect measurement suggested by Tekely et al. |
| WOS关键词 | NUCLEAR MAGNETIC-RESONANCE ; CROSS-POLARIZATION ; C-13 NMR ; POLYMER BLENDS ; EXCHANGE ; SPECTROSCOPY ; ZEOLITE ; ADSORPTION ; INVERSION ; METHANOL |
| WOS研究方向 | Chemistry ; Physics ; Spectroscopy |
| 语种 | 英语 |
| WOS记录号 | WOS:A1993LQ64300001 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/12505]  |
| 专题 | 中国科学院武汉物理与数学研究所 |
| 作者单位 | CHINESE ACAD SCI,WUHAN INST PHYS,STATE KEY LAB MAGNET RESONANCE & ATOM & MOLEC PHYS,WUHAN 430071,PEOPLES R CHINA |
| 推荐引用方式 GB/T 7714 | DENG, F,HU, JZ,XIONG, JC,et al. SOLID-STATE NMR-STUDIES OF H-1 SPIN-DIFFUSION IN ADSORBED ORGANIC-MOLECULES[J]. SOLID STATE NUCLEAR MAGNETIC RESONANCE,1993,2(3):97-103. |
| APA | DENG, F,HU, JZ,XIONG, JC,&DU, YR.(1993).SOLID-STATE NMR-STUDIES OF H-1 SPIN-DIFFUSION IN ADSORBED ORGANIC-MOLECULES.SOLID STATE NUCLEAR MAGNETIC RESONANCE,2(3),97-103. |
| MLA | DENG, F,et al."SOLID-STATE NMR-STUDIES OF H-1 SPIN-DIFFUSION IN ADSORBED ORGANIC-MOLECULES".SOLID STATE NUCLEAR MAGNETIC RESONANCE 2.3(1993):97-103. |
入库方式： OAI收割
来源：武汉物理与数学研究所
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