Cr-MCM-41分子筛的合成、 表征及其催化性能[HT][HT4F]

Cr-MCM-41分子筛的合成、表征及其催化性能[HT][HT4F]

庄红^1,２，周广栋¹, 刘涛^３, 毕颖丽¹, 程铁欣¹, 甄开吉¹

1. 吉林大学化学学院物理化学研究所，长春 130023； 2.长春中医学院药学院，长春 130117；3. 中国科学院高能物理研究所同步辐射实验室, 北京 100039

收稿日期:2004-02-18 修回日期:1900-01-01 出版日期:2004-07-26 发布日期:2004-07-26
通讯作者: 程铁欣

Synthesis, characterization and catalytic properties of Cr-MCM-41 molecular sieves

ZHUANG Hong^1,２， ZHOU Guang-dong¹, LIU Tao³, BI Ying-li¹, CHENG Tie-xin¹, ZHEN Kai-ji¹

1. Institute of Physical Chemistry, College of Chemistry, Jilin University, Changchun 130023, China; ２． College of Chinese Pharmacy, 　Changchun College of Traditional Chinese Medicine, Changchun 130117, China; ３. Beijing Synchrotron Radiation Laboratory, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039, China

Received:2004-02-18 Revised:1900-01-01 Online:2004-07-26 Published:2004-07-26
Contact: CHENG Tie-xin

摘要/Abstract

摘要： 合成了一系列掺杂Cr的MCM-41分子筛，并用XRD, IR和EXAFS等手段表征了催化剂. 实验结果表明，一部分Cr离子进入到MCM-41骨架，另一部分Cr离子以其他Cr化合物形式存在且这部分铬可通过NH₄Ac溶液洗去. Cr-MCM-41和Cr-MCM-41-t催化剂在十八醇选择氧化反应的几个循环中表现了稳定的十八醇转化率和十八酸选择性.

关键词: Cr-MCM-41分子筛, 十八醇, 催化氧化, EXAFS

Abstract: A series of Cr-containing MCM-41 molecular sieves has been synthesized and characterized by XRD, IR and Extend X-ray Absorption Fine Structure(EXAFS) techniques. It has been shown that a certain amount of chromium ions has been incorporated into the framework of MCM-41 and the rest part of the contained Cr ions still existed as other types of Cr-containing compounds, which can be washed off by a NH₄Ac solution. The octadecan-1-ol c onversion and octadecanoic acid selectivity are not decreased after Cr-MCM-41 and Cr-MCM-41-t catalysts have been repeatedly used for the selective oxidation of octadecan-1-ol to octadecanoicacid.

Key words: Cr-MCM-41 molecular sieve, octadecan-1-ol, catalytic oxidation, EXAFS

中图分类号:

O643.38

庄红，周广栋, 刘涛, 毕颖丽, 程铁欣, 甄开吉. Cr-MCM-41分子筛的合成、表征及其催化性能[HT][HT4F][J]. J4, 2004, 42(03): 447-450.

ZHUANG Hong， ZHOU Guang-dong, LIU Tao, BI Ying-li, CHENG Tie-xin, ZHEN Kai-ji. Synthesis, characterization and catalytic properties of Cr-MCM-41 molecular sieves[J]. J4, 2004, 42(03): 447-450.

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