高等学校化学学报

高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (10): 1495.

• 论文 •    下一篇

有机弱碱体系中氢型硅铝MCM-41介孔分子筛的合成及表征

林文勇1, 庞文琴1, 魏长平2, 李冬妹3, 甄开吉2   

  1. 1. 吉林大学无机合成与材料制备化学开放实验室, 长春 130023;
    2. 吉林大学化学系, 长春 130023;
    3. 吉林大学超硬材料国家重点实验室, 长春 130023
  • 收稿日期:1998-09-30 出版日期:1999-10-24 发布日期:1999-10-24
  • 通讯作者: 庞文琴
  • 作者简介:林文勇,男,28岁,博士研究生.
  • 基金资助:

    国家自然科学基金(批准号:29571011);教育部博士点基金;吉林大学无机合成与制备化学开放实验室资助课题

Synthesis and Characterization of H-form Aluminosilicate MCM-41 in a Novel Alkali-metal Free Media

LIN Wen-Yong1, PANG Wen-Qin1, WEI Chang-Ping2, LI Dong-Mei3, ZHEN Kai-Ji2   

  1. 1. The Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Chang chun 130023;
    2. China Department of Chemistry, Jilin University, Chang chun 130023;
    3. State Key Laboratory of Super Hard Materials, Jilin University, Chang chun 130023
  • Received:1998-09-30 Online:1999-10-24 Published:1999-10-24

PDF (PC)

被引次数

96

摘要： 以有机胺为碱源合成出硅铝介孔分子筛MCM-41,并将合成产物的性能与采用传统方法(以氢氧化钠为碱源)合成的产物进行了对比.所合成产物经焙烧脱除有机表面活性剂后即为氢型.XRD和TEM结果表明,所合成的产物骨架具有很高的有序度.固体核磁共振结果显示,铝原子以四配位的形式存在于样品的原粉中.经过高温焙烧,有少量骨架铝脱出骨架,转变成六配位形式.程序升温吡啶吸附红外光谱证明焙烧后产物具有一定的表面酸性.

关键词: 氢型MCM-41, 合成, 有机弱碱, 表面酸性

Abstract: Incorporation of aluminum into MCM-41 framework was achieved in an alkali-free system, by using diethylamine as the base source. The properties of the product are compared with those of the samples obtained with NaOH. XRD and TEM results show that the resulted materiaLIs highly ordered. 27AlMAS NMR experiment indicates that aluminum atoms are present with a 4-coordinated form in the as-synthesized samples. Upon calcination, a small amount of Al was removed from the framework, as indicated by a small peak characteristic of 6-coordinated ALIN the NMR profile. The surface acidity of the calcined samples were studied with Py-IR technique.

Key words: H-form MCM-41, Synthesis, Organic weak base, Surface acidity

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