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化学学报
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化学学报 ›› 2001, Vol. 59 ›› Issue (3): 350-355. 上一篇    下一篇

研究论文

高硅沸石合成中四氢呋喃模板作用的初步研究

钱斌;王喜庆;郭国清;宋茂莹;石磊;孙尧俊;龙英才   

  1. 复旦大学化学系.上海(200433);北京燕山石油化学工业公司研究院.北京( );复旦大学分析测试中心.上海(200433)
  • 发布日期:2001-03-15

Studies on structure-directing role of THF in synthesis of high silica zeolites

Qian Bin;Wang Xiqing;Guo Guoqing;Song Maoying;Shi Lei;Sun Yaojun;Long Yingcai   

  1. Fudan Univ, Dept Chem.Shanghai(200433);Beijing Yanshan Petroleum Chemical Corp., Res Institute.Beijing;Fudan Univ, Ctr Anal & Measurement.Shanghai(200433)
  • Published:2001-03-15

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426

被引次数

16 | 4

在四氢呋喃(THF)-Na~2O-SiO~2-Al~2O~3-H~2O体系中，水热条件下合成出的沸石相，随配料硅铝比提高，依次为MOR(丝光沸石)，ZSM-35，ZSM-5和ZSM-39，1^3^CCP/MASNMR谱，TG/DTG/DTA和EDX成分分析方法对沸石中的THF进行表征，1^3^C谱化学位移的显著变化，以及THF高的脱除温度，证明作为模板剂的THF分子进入所合成的沸石结构，并与骨架发生强的相互作用。

关键词: 沸石, 四氢呋喃, 模板作用, 碳13核磁共振谱法, 扫描电子显微镜

Four types of zeolites in the system of tetrahydrofuran (THF)-Na~2O SiO~2-Al~2O~3-H~2O were synthesized under different hydrothermal conditions. With increase of the ratios of SiO~2/Al~2O~3 in the reactant, the zeolites synthesized were in the following order: mordenite (MOR), ZSM-35, ZSM-5, ZSM-39. The template molecules of THF trapped in the channels or the cages of these zeolites were characterized by 1^3^C CP/MAS NMR spectra, TG/DTG/DTA and EDX composition analysis. The facts that the apparent shift of δ~c~(~1~) and δ~c~(~2~) of THF and the higher temperatures for THF escaping from the zeolites synthesized confirm that THF strongly interacts with the framework of the zeolites, playing a role of the template.

Key words: ZEOLITE, TETRAHYDROFURAN, C13 NMR SPECTROMETRY, SCANNING ELECTRON MICROSCOPES

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