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化学学报
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化学学报 ›› 2007, Vol. 65 ›› Issue (15): 1481-1486. 上一篇    下一篇

研究论文

低浓度液体酸介质中快速合成SBA-15分子筛

罗永明1,2, 侯昭胤1, 郑小明*,1   

  1. (1浙江大学西溪校区催化研究所 杭州 310028)
    (2昆明理工大学环境科学与工程学院 昆明 650093)
  • 投稿日期:2006-11-06 修回日期:2007-02-14 发布日期:2007-08-14
  • 通讯作者: 郑小明

Rapid Synthesis of SBA-15 Molecular Sieves in Low Concentration Liquid Acid Media

LUO Yong-Ming1,2; HOU Zhao-Yin1; ZHENG Xiao-Ming*,1   

  1. (1 Institute of Catalysis, Zhejiang University (Xixi Campus), Hangzhou 310028)
    (2 Faculty of Environmental Science and Engineering, Kunming University of Sci-ence and Technology, Kunming 650093)
  • Received:2006-11-06 Revised:2007-02-14 Published:2007-08-14
  • Contact: ZHENG Xiao-Ming

PDF

878

被引次数

35 | 7

通过在低浓度无机液体酸介质中添加少量磷钼酸(HPMo), 成功地合成了高度有序的SBA-15介孔分子筛. N2吸附-脱附、XRD、TEM和水热稳定性实验等检测结果表明: 用这种方法不仅可以大幅度降低合成SBA-15分子筛所需液体酸的用量和缩短晶化时间, 同时反应产物SBA-15在100 ℃的水中处理72 h后仍然保持六方有序的介孔结构.

关键词: 模板剂, 低浓度液体酸, 磷钼酸, SBA-15, 水热稳定性

Highly ordered SBA-15 sieves have been successfully synthesized in a low concentration liquid inorganic acid medium via the addition of small amounts of phosphomolybdic acid (HPMo). The solid product was characterized by N2 adsorption-desorption, XRD, TEM and hydrothermal stability test. These results indicated that small amounts of HPMo in the synthesis media could reduce the amount of liquid in-organic acid and crystallization time greatly. And SBA-15 sieves prepared in this method exhibited an excellent hydrothermal stability, as its hexagonally ordered mesostructure was maintained after treated in 100 ℃ water over 72 h.

Key words: template, low concentration liquid acid, phosphomolybdic acid, SBA-15, hydrothermal stability