不同晶粒大小Silicalite-1分子筛的合成及其MTP反应性能

硅酸盐通报 ›› 2018, Vol. 37 ›› Issue (1): 309-314.

不同晶粒大小Silicalite-1分子筛的合成及其MTP反应性能

张洪菡;张善鹤;孟哲;李春义;山红红

中国石油大学(华东)重质油国家重点实验室,青岛,266580

出版日期:2018-01-15 发布日期:2021-01-18
基金资助:
国家重点基础研究发展计划(973计划)(2012CB215006)

Synthesis of Silicalite-1 Zeolite with Different Particle Size and Its Application in MTP Reaction

ZHANG Hong-han;ZHANG Shan-he;MENG Zhe;LI Chun-yi;SHAN Hong-hong

Online:2018-01-15 Published:2021-01-18

摘要/Abstract

摘要： 采用不同模板剂和碱源合成一系列Silicalite-1分子筛.所得样品通过X射线衍射仪(XRD),氮气吸脱附仪,电子扫描电镜(SEM),氨气程序升温脱附仪(NH3-TPD)和傅里叶红外光谱仪(FT-IR)表征.结果表明:TPA+具有稳定的正四面体结构,在合成Silicalite-1分子筛的过程中导向作用最强;通过改变碱源调节凝胶碱度,碱度降低,晶粒尺寸增大.将最佳条件下制备的Silicalite-1催化剂应用于甲醇制丙烯(MTP)反应中,与工业lurgi催化剂相比, Silicalite-1催化剂具有丙烯选择性高、失活速率慢的特点.

关键词: Silicalite-1;模板剂;碱源;MTP

Abstract: A series of Silicalite-1 zeolites were synthesized with different templates and pH regulators.The obtained samples were characterized by XRD, N2adsorption-desorption, SEM, NH3-TPD and FT-IR. The results indicate that TPA+exhibited the best structure-directing performance due to its stable tetrahedral structure; colloidal alkalinity is verified through changing pH regulators, as a result the alkalinity decreased and the grain size increased.The as-synthesized Silicalite-1 catalyst obtained from optimum conditions is applied to MTP reaction,compared with industrialized lurgi catalyst,the Silicalite-1 catalyst has the characteristics of the higher selectivity to propene and the lower deactivation rate.

Key words: Silicalite-1;template;pH regulator;MTP

中图分类号:

TE624.9+1

张洪菡;张善鹤;孟哲;李春义;山红红. 不同晶粒大小Silicalite-1分子筛的合成及其MTP反应性能[J]. 硅酸盐通报, 2018, 37(1): 309-314.

ZHANG Hong-han;ZHANG Shan-he;MENG Zhe;LI Chun-yi;SHAN Hong-hong. Synthesis of Silicalite-1 Zeolite with Different Particle Size and Its Application in MTP Reaction[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2018, 37(1): 309-314.