TiO2-decorated NaA zeolite membranes with improved separation stability for pervaporation dehydration of N, N-Dimethylacetamide

2021 ◽  
pp. 119398
Author(s):  
Yuting Zhang ◽  
Xinfeng Zhu ◽  
Shengze Chen ◽  
Jinyun Liu ◽  
Zhou Hong ◽  
...  
Keyword(s):  
Zeolite Membranes ◽  
Naa Zeolite

Structure, stability and permeation properties of NaA zeolite membranes for H2O/H2 and CH3OH/H2 separations

2018 ◽  
Vol 38 (1) ◽  
pp. 211-219 ◽  
Author(s):  
Sang Moon Lee ◽  
Nong Xu ◽  
John R. Grace ◽  
Anwu Li ◽  
C. Jim Lim ◽  
...  
Keyword(s):  
Structure Stability ◽  
Zeolite Membranes ◽  
Naa Zeolite ◽  
Permeation Properties

Microwave-Assisted Synthesis and Permeation Performance of NaA Zeolite Membrane by Secondary Growth Method

2014 ◽  
Vol 1053 ◽  
pp. 389-393
Author(s):  
Zhi Lin Cheng ◽  
Ying Ying Liu
Keyword(s):  
Gas Permeability ◽  
Knudsen Diffusion ◽  
Secondary Growth ◽  
Zeolite Membrane ◽  
Microwave Assisted Synthesis ◽  
Vapor Phase Transport ◽  
Zeolite Membranes ◽  
Synthesis Time ◽  
Naa Zeolite ◽  
Naa Zeolite Membrane

The highly intergrown NaA zeolite membranes on seeded α-Al2O3substrate were synthesized by microwave heating method. The preparation of seeds with the size of ca.120nm employed the vapor phase transport method (VPT). The XRD patterns indicated that the pure NaA zeolite membranes formed on the seeded α-Al2O3substrate for varied synthesis times. However, the peak intensity of NaA zeolite membrane with synthesis time of 50min obviously decreased, suggesting that the NaA membrane could take place the dissolution at that time. The SEM images indicated that the NaA zeolite membranes with synthesis time of 15-30min had a good integrity and consisted of highly intergrown zeolite crystals, but the NaA membrane with synthesis time of 50min appeared some large defects, further verifying the result of XRD pattern. The gas permeability showed that the maximum of H2/N2and H2/C3H8permselectivities attained 4.23 and 8.24, respectively, higher than those of the corresponding Knudsen diffusion. These results suggested that the diffusion of gases, at least in part, are affected by the pore size of zeolite and the function of molecular sieving can be embodied on the synthesized membrane.

scholarly journals Preparation and Characterization of NaA Zeolite Membranes and its Application for Removal of Heavy Metals

2013 ◽  
Vol 2 (3) ◽  
pp. 484-492 ◽  
Author(s):  
Najib Tijani ◽  
Hammou Ahlafi ◽  
Monique Smaihi ◽  
Abdeslam El Mansouri
Keyword(s):  
Heavy Metals ◽  
Zeolite Membranes ◽  
Naa Zeolite ◽  
Removal Of Heavy Metals

A semi-continuous method for the synthesis of NaA zeolite membranes on tubular supports

2004 ◽  
Vol 244 (1-2) ◽  
pp. 141-150 ◽  
Author(s):  
M PINA ◽  
M ARRUEBO ◽  
M FELIPE ◽  
F FLETA ◽  
M BERNAL ◽  
...  
Keyword(s):  
Continuous Method ◽  
Zeolite Membranes ◽  
Naa Zeolite

Synthesis and Characterization of NaA Zeolite Membranes Prepared by the Secondary Growth Method: A Research-Based Comprehensive Experiment

Daxue Huaxue ◽  
2018 ◽  
Vol 33 (9) ◽  
pp. 69-74
Author(s):  
Liangqing LI ◽  
◽  
Qipeng SONG ◽  
Jinjian ZHANG ◽  
Chenchen DAI ◽  
...  
Keyword(s):  
Secondary Growth ◽  
Synthesis And Characterization ◽  
Zeolite Membranes ◽  
Naa Zeolite ◽  
Growth Method
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