文档介绍：
以多级孔的聚苯乙烯微球为模板合成多级
孔 Silicalite-1#
杨晓媛,王竹倩,阚秋斌,管景奇**
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(吉林大学化学学院,长春,130021)
摘要:采用一种具有多级孔结构的聚苯乙烯微球 poly-styrene-co-divinylbenzene (PSD)为模
板,合成具有多级孔结构的 Silicalite-1 沸石。SEM 表征证明这种复合材料保持了原模板的
外貌形状特点,并且通过 XRD 和 FT-IR 观察到其具有晶化度较好的 MFI 类结构,氮气吸附
-脱附说明复合材料拥有较大的孔体积。
关键词:物理化学;多级孔材料;聚苯乙烯微球;Silicalite-1
中图分类号:O643
Synthesis and characterization Silicalite-1 with hierarchical
porosity using monodisperse porous ploystyrene particle as
template
YANG Xiaoyuan, WANG zhuqian, KAN Qiubin, GUAN Jingqi
(College of Chemistry,Jilin University,Changchun,130021)
Abstract:
The hierarchical Silicalite-1
was prepared by a template poly-
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styrene-co-divinylbenzene microsphere(PSD) with pore structure. The hierarchical Silicalite-1
were characterized by XRD, SEM, and N2 adsorption-desorption techniques. SEM proved that this
kind posite materials kept the original appearance shape characteristic of the template.
XRD and FT-IR showed that it had a good MFI structure. And nitrogen adsorption-desorption
demonstrated that posite material had large pore volume.
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Key words:
Physical chemistry; hierarchial porous material; monodisperse porous polystyrene
particles ; Silicalite-1.
0 引言
纯硅 Silicalite-1 沸石是一种具有良好的热稳定性、特殊的十元环孔道结构、憎水和亲油
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35
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等特性作为的 MFI 结构分子筛[1]。一般都是以四丙基铵根离子为模板剂在水热条件下合成
[2-5]
然而,Silicalite-1 较小的孔径(直径<2 nm)限制了其在大分子反应方面的应用[7]。将其单一
的微孔结构拓展成同时含有微孔