Synthesis and characterization of various zeolites and study of dynamic adsorption of dimethyl methyl phosphate over them

被引:30
作者
Khanday, Waheed Ahmad [1 ]
Majid, Sheikh Abdul [1 ]
Shekar, S. Chandra [2 ]
Tomar, Radha [1 ]
机构
[1] Jiwaji Univ, SOS Chem, Gwalior 474011, MP, India
[2] Def R&D Estab, Gwalior 474002, MP, India
关键词
Microporous materials; X-ray diffraction; Electron microscopy; Surface properties; METHYLPHOSPHONATE DMMP; DECOMPOSITION; SIMULANTS; SENSORS; SURFACE;
D O I
10.1016/j.materresbull.2013.08.003
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Zeolite-A, MCM-22, Zeolite-X and Erionite were synthesized successfully under hydrothermal conditions and were characterized by X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), Brunauer-Emmett-Teller (BET) surface area analysis and thermal programmed desorption (TPD). Dynamic adsorption of dimethyl methyl phosphate (DMMP) was carried out on these zeolites. Zeolite-X having high surface area among all four zeolites shows highest adsorption capacity followed by Erionite and MCM-22 where as Zeolite-A shows the least. For all zeolites adsorption was found to be high initially and it then decreases with increase in injected volume. Then desorption pattern was analyzed which shows two types of peaks, sharp peak representing desorption of physisorbed DMMP and a broad peak representing desorption of strongly chemisorbed DMMP. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码:4679 / 4686
页数:8
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