Utilization of Pebax 1657 as structure directing agent in fabrication of ultra-porous ZIF-8

被引：20
作者：
Jomekian, A. [1 ,2 ]
Behbahani, R. M. [1 ]
Mohammadi, T. [2 ]
Kargari, A. [3 ]
机构：
[1] Petr Univ Technol, Ahvaz Fac Petr Engn, Gas Engn Dept, POB 63431, Ahvaz, Iran
[2] Iran Univ Sci & Technol, Fac Chem Engn, Tehran, Iran
[3] Amirkabir Univ Technol, Dept Petrochem Engn, Mahshahr, Iran
来源：
JOURNAL OF SOLID STATE CHEMISTRY | 2016年 / 235卷
关键词：
ZIF-8; Pebax; 1657; Mean pore size; BET surface area; Temperature; Molar ratio of precursors; ZEOLITIC IMIDAZOLATE FRAMEWORK-8; ROOM-TEMPERATURE SYNTHESIS; AQUEOUS-SOLUTIONS; CRYSTAL-GROWTH; METAL; ADSORPTION; SIZE; NANOCRYSTALS; TRANSITION; SURFACTANT;
D O I：
10.1016/j.jssc.2016.01.004
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Ultra porous ZIF-8 particles synthesized using PEO/PA6 based poly(ether-block-amide) (Pebax 1657) as structure directing agent. Structural properties of ZIF-8 samples prepared under different synthesis parameters were investigated by laser particle size analysis, XRD, N-2 adsorption analysis, BJH and BET tests. The overall results showed that: (1) The mean pore size of all ZIF-8 samples increased remarkably (from 0.34 nm to 1.1-2.5 nm) compared to conventionally synthesized ZIF-8 samples. (2) Exceptional BET surface area of 1869 m(2)/g was obtained for a ZIF-8 sample with mean pore size of 2.5 nm. (3) Applying high concentrations of Pebax 1657 to the synthesis solution lead to higher surface area, larger pore size and smaller particle size for ZIF-8 samples. (4) Both, Increase in temperature and decrease in molar ratio of MeIM/Zn2+ had increasing effect on ZIF-8 particle size, pore size, pore volume, crystallinity and BET surface area of all investigated samples. (C) 2016 Elsevier Inc. All rights reserved.
引用
收藏
页码：212 / 216
页数：5
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