石油炼制与化工

• 基础研究 • 上一篇    下一篇

以EU-1分子筛为晶种合成ZSM-11分子筛及其表征

耿晨晨1,马波2,秦波2,张喜文2   

  1. 1. 辽宁辽宁石油化工大学;抚顺石油化工研究院
    2. 抚顺石油化工研究院
  • 收稿日期:2010-11-30 修回日期:2011-02-14 出版日期:2011-07-12 发布日期:2011-07-12
  • 通讯作者: 马波

SYNTHESIS AND CHARACTERIZATION OF ZEOLITE ZSM-11 USING ZEOLITE EU-1 AS HETEROGENOUS CRYSTAL SEED

  • Received:2010-11-30 Revised:2011-02-14 Online:2011-07-12 Published:2011-07-12

摘要: 以EU-1分子筛为异质晶种,以不同模板剂和硅源合成了两种不同粒度尺寸的ZSM-11分子筛。采用XRD,FT-IR,SEM,N2吸附-脱附等手段对合成的ZSM-11分子筛样品进行表征。结果表明,晶种加入量在1%~10%,一定温度下水热晶化处理1~10天,均可以得到结晶度高、无杂晶的ZSM-11分子筛。采用不同方法合成的两种ZSM-11分子筛在形貌及晶粒尺寸上存在较明显区别,微米尺寸的ZSM-11分子筛呈现椭球状,由许多板条状粒子团聚而成,尺寸约为200 nm×700 nm;纳米尺寸的ZSM-11分子筛呈现清晰的球状晶体,是许多球状纳米级粒子团聚形成的,粒径在100 nm以下。

关键词: ZSM-11分子筛, EU-1分子筛, 合成, 表征

Abstract: Abstract: With zeolite EU-1 as heterogenous crystal seed, two ZSM-11 zeolite samples having various crystal sizes were synthesized by using different synthesis methods, templates and silicon sources. The prepared ZSM-11 samples were characterized by XRD, FT-IR, SEM, N2 adsorption-desorption and so on. The influence of the adding amount of heterogenous crystal seed was studied. Results showed that zeolite ZSM-11 with high crystallinity could be obtained when using 1%-10% heterogenous crystal seed and crystallization under a certain temperature for 1-10 days. The characterization results showed that the morphologies and crystal size of ZSM-11 samples synthesized by different methods were varied: one exhibited as spherical nanometer crystals with particle size under 100 nm, and another was elliptic globosity micron crystals (200 nm×700 nm) having large mesoporous structure, which was agglomerated by panel particles. Furthermore, the SiO2/Al2O3 ratios of these two samples were varied significantly as well, the nanometer sample was lower and the micron one was higher.

Key words: zeolite ZSM-11, zeolite EU-1, synthesis, characterization