Synthesis of a zeolite membrane as a protective layer on a metallic Pd composite membrane for hydrogen purification

2015 ◽  
Vol 3 (9) ◽  
pp. 5000-5006 ◽  
Author(s):  
Jiafeng Yu ◽  
Chenchen Qi ◽  
Jixin Zhang ◽  
Chun Bao ◽  
Hengyong Xu
Keyword(s):  
Hydrothermal Synthesis ◽  
Composite Membrane ◽  
Protective Layer ◽  
Zeolite Membrane ◽  
Hydrogen Purification ◽  
Pd Membrane ◽  
Good Protection ◽  
Hydrogen Permeance

A zeolite membrane was synthesized on the surface of Pd membrane by seed-free hydrothermal synthesis. The zeolite membrane, which was used as an “armor”, offered good protection to the Pd membranes, significantly suppressing hydrogen permeance loss.

Highly selective laser-induced graphene (LIG)/polysulfone composite membrane for hydrogen purification

2021 ◽  
Vol 22 ◽  
pp. 100971
Author(s):  
Naveen K. Mishra ◽  
Nutan Patil ◽  
Muhammad Anas ◽  
Xiaofei Zhao ◽  
Benjamin A. Wilhite ◽  
...  
Keyword(s):  
Composite Membrane ◽  
Hydrogen Purification

High-performance carbon molecular sieve membranes for hydrogen purification and pervaporation dehydration of organic solvents

2019 ◽  
Vol 7 (12) ◽  
pp. 7082-7091 ◽  
Author(s):  
P. H. Tchoua Ngamou ◽  
M. E. Ivanova ◽  
O. Guillon ◽  
W. A. Meulenberg
Keyword(s):  
Organic Solvents ◽  
Molecular Sieve ◽  
High Performance ◽  
Elevated Temperatures ◽  
Hydrogen Purification ◽  
Carbon Membrane ◽  
Carbon Molecular Sieve ◽  
High Hydrogen ◽  
Hydrogen Permeance

Successful synthesis of a ceramic-supported ultrathin carbon membrane with unprecedently high hydrogen permeance and outstanding H2/CO2, H2/N2 and H2/CH4 selectivities at elevated temperatures.

scholarly journals Effects of Seed Crystals on the Growth and Catalytic Performance of TS-1 Zeolite Membranes

Membranes ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 41
Author(s):  
Wenjuan Ding ◽  
Sitong Xiang ◽  
Fei Ye ◽  
Tian Gui ◽  
Yuqin Li ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
High Performance ◽  
Catalytic Performance ◽  
Zeolite Membrane ◽  
Medium Size ◽  
Zeolite Membranes ◽  
Seed Crystals ◽  
Ratio Size ◽  
Porous Mullite ◽  
Size And Morphology

Dense and good catalytic performance TS-1 zeolite membranes were rapidly prepared on porous mullite support by secondary hydrothermal synthesis. The properties of seed crystals were very important for the preparation of high-catalytic performance TS-1 zeolite membranes. Influences of seed crystals (Ti/Si ratios, size, morphology, and zeolites concentration of the seed suspension) on the growth and catalytic property of TS-1 zeolite membranes were investigated in details. High Ti/Si ratio, medium-size, and morphology of the seed crystals were critical for preparing the high-performance TS-1 zeolite membrane. Compared with the bi-layer TS-1 zeolite membrane (inner and outer of the mullite tube), the mono-layer TS-1 zeolite membrane had a better catalytic performance for Isopropanol IPA oxidation with H2O2. When the Ti/Si ratio, size, and morphology of the TS-1 zeolites were 0.030, 300 nm, ellipsoid, and the zeolites concentration of the seed suspension was 5%, the IPA conversion, and flux through the TS-1 zeolite membrane were 98.23% and 2.58 kg·m−2·h−1, respectively.

Hydrothermal synthesis of hydroxy sodalite zeolite membrane: Separation of H2/CH4

2014 ◽  
Vol 40 (4) ◽  
pp. 5889-5896 ◽  
Author(s):  
Mohammad Sadegh Nabavi ◽  
Toraj Mohammadi ◽  
Mansoor Kazemimoghadam
Keyword(s):  
Hydrothermal Synthesis ◽  
Membrane Separation ◽  
Zeolite Membrane

Microwave-assisted hydrothermal synthesis of hydroxy-sodalite zeolite membrane

2004 ◽  
Vol 75 (3) ◽  
pp. 173-181 ◽  
Author(s):  
Xiaochun Xu ◽  
Yun Bao ◽  
Chunshan Song ◽  
Weishen Yang ◽  
Jie Liu ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Zeolite Membrane ◽  
Microwave Assisted
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