催化学报

催化学报 ›› 2007, Vol. 28 ›› Issue (3): 187-189.

• 研究快讯 •    下一篇

水-丁醇两相介质合成SAPO-11和MgAPO-11分子筛

杨晓梅1,2,徐竹生1,马怀军1,2,徐云鹏1,田志坚1,林励吾1   

  1. 1 中国科学院大连化学物理研究所, 辽宁大连 116023; 2 中国科学院研究生院, 北京 100049
  • 收稿日期:2007-03-25 出版日期:2007-03-25 发布日期:2007-03-25

Synthesis of SAPO-11 and MgAPO-11 Molecular Sieves in Water-Butanol Biphase Media

YANG Xiaomei1,2, XU Zhusheng1, MA Huaijun1,2, XU Yunpeng1, TIAN Zhijian1, LIN Liwu1   

  1. 1 Dalian Institute of Chemical Physics, The Chinese Academy of Sciences, Dalian 116023, Liaoning, China; 2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2007-03-25 Online:2007-03-25 Published:2007-03-25

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摘要： 在水-丁醇两相介质中合成了SAPO-11和MgAPO-11分子筛. 水-丁醇两相介质有利于在SAPO-11中引入更多的Si, 从而产生较多的酸性位,以所得SAPO-11为载体的Pt催化剂在正十二烷临氢异构化反应中表现出较高的催化活性. 相反,水-丁醇两相介质不利于Mg进入分子筛骨架,导致MgAPO-11上的酸性位减少,Pt/MgAPO-11催化剂的催化活性降低.

关键词: SAPO-11, MgAPO-11, 水-丁醇两相介质, 铂, 正十二烷, 临氢异构化

Abstract: SAPO-11 and MgAPO-11 molecular sieves were synthesized in water-butanol biphase media. The water-butanol biphase media favored the incorporation of Si into SAPO-11 and the formation of more acid sites. Therefore, the Pt catalyst supported on the SAPO-11 synthesized in the biphase medium exhibited much higher catalytic activity for the hydroisomerization of n-dodecane than that supported on the SAPO-11 synthesized in an aqueous medium. In contrast, the water-butanol biphase media were unfavorable for the Mg substitution into the framework, and thus the acid sites and the catalytic activity of Pt/MgAPO-11 decreased.

Key words: SAPO-11, MgAPO-11, water-butanol biphase medium, platinum, n-dodecane, hydroisomerization