Morphology and gas permeance of ZSM-5-type zeolite membrane formed on a porous α-alumina support tube

1996 ◽  
Vol 116 (1) ◽  
pp. 39-46 ◽  
Author(s):  
K Kusakabe
Keyword(s):  
Zeolite Membrane ◽  
Alumina Support ◽  
Support Tube ◽  
Type Zeolite

scholarly journals Gas Permeation Properties of High-Silica CHA-Type Zeolite Membrane

Membranes ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 249
Author(s):  
Yasuhisa Hasegawa ◽  
Chie Abe ◽  
Mayumi Natsui ◽  
Ayumi Ikeda
Keyword(s):  
Molecular Size ◽  
Gas Permeation ◽  
Zeolite Membrane ◽  
Type Zeolite ◽  
High Silica ◽  
Separation Of Co2 ◽  
Α Al2o3 ◽  
Separation Performances ◽  
Molecular Sieving ◽  
Permeation Properties

The polycrystalline CHA-type zeolite layer with Si/Al = 18 was formed on the porous α-Al2O3 tube in this study, and the gas permeation properties were determined using single-component H2, CO2, N2, CH4, n-C4H10, and SF6 at 303–473 K. The membrane showed permeation behavior, wherein the permeance reduced with the molecular size, attributed to the effect of molecular sieving. The separation performances were also determined using the equimolar mixtures of N2–SF6, CO2–N2, and CO2–CH4. As a result, the N2/SF6 and CO2/CH4 selectivities were as high as 710 and 240, respectively. However, the CO2/N2 selectivity was only 25. These results propose that the high-silica CHA-type zeolite membrane is suitable for the separation of CO2 from CH4 by the effect of molecular sieving.

Separation of Methane from Shuttle Tanker Vents Gases by Adsorption on a Polyurethane/Zeolite Membrane

2017 ◽  
Vol 733 ◽  
pp. 42-46
Author(s):  
Habiba Shehu ◽  
Edidiong Okon ◽  
Edward Gobina
Keyword(s):  
Carbon Dioxide ◽  
Physical Properties ◽  
Crude Oil ◽  
Deep Water ◽  
Separation Factor ◽  
Gas Permeation ◽  
Zeolite Membrane ◽  
Alumina Support ◽  
Molar Flux

Shuttle tankers are becoming more widely used in deep water installations as a means of transporting crude oil to storage plants and refineries. The emissions of hydrocarbon vapours arise mainly during loading and offloading operations. Experiments have been carried out on the use of polyurethane/zeolite membrane on an alumina support for the separation of methane from carbon dioxide and oxygen. The physical properties of the membrane were investigated by FTIR. Single gas permeation tests with methane, propane, oxygen and carbon dioxide at a temperature of 293 K and pressure ranging from 0.1 to 1.0 x 10-5 Pa were carried out. The molar flux of the gases through the membrane was in the range of 3 x 10-2 to 1 x 10-1 molm-2s-1. The highest separation factor of CH4/CO2 and CH4/O2 and CH4/C3H8 was determined to be 1.7, 1.7 and 1.6 respectively.

Synthesis and Permeation Properties of a DDR-Type Zeolite Membrane for Separation of CO2/CH4Gaseous Mixtures

2007 ◽  
Vol 46 (21) ◽  
pp. 6989-6997 ◽  
Author(s):  
Shuji Himeno ◽  
Toshihiro Tomita ◽  
Kenji Suzuki ◽  
Kunio Nakayama ◽  
Kenji Yajima ◽  
...  
Keyword(s):  
Zeolite Membrane ◽  
Type Zeolite ◽  
Separation Of Co2 ◽  
Permeation Properties

Development of Biogas Separation Process Using DDR-Type Zeolite Membrane

2010 ◽  
Vol 36 (6) ◽  
pp. 545-551 ◽  
Author(s):  
Shuji Himeno ◽  
Kiwamu Takeya ◽  
Shoichi Fujita
Keyword(s):  
Separation Process ◽  
Zeolite Membrane ◽  
Type Zeolite

scholarly journals DDR-type zeolite membrane synthesis, modification and gas permeation studies

2016 ◽  
Vol 505 ◽  
pp. 194-204 ◽  
Author(s):  
Shaowei Yang ◽  
Zishu Cao ◽  
Antonios Arvanitis ◽  
Xinhui Sun ◽  
Zhi Xu ◽  
...  
Keyword(s):  
Gas Permeation ◽  
Zeolite Membrane ◽  
Membrane Synthesis ◽  
Permeation Studies ◽  
Type Zeolite

Synthesis of MCM-22 Zeolite Membrane on a Porous Alumina Support

2014 ◽  
Vol 805 ◽  
pp. 272-278 ◽  
Author(s):  
Antonielly dos S. Barbosa ◽  
Antusia dos S. Barbosa ◽  
Meiry Glaucia F. Rodrigues
Keyword(s):  
Porous Alumina ◽  
Mercury Porosimetry ◽  
Secondary Growth ◽  
Molecular Size ◽  
Zeolite Membrane ◽  
X Ray Diffraction ◽  
Alumina Support ◽  
X Ray ◽  
Ceramic Support ◽  
Separation Of Mixtures

Much interest has been aroused in the application in industrial processes using zeolite membrane, due to its crystalline structure, and narrow pore diameters. These features enable the continuous separation of mixtures based on differences in molecular size and shape and also based on different adsorption properties. This paper reports the synthesis of MCM-22 zeolite membrane, using the method of secondary growth. The MCM-22 zeolite was synthesized by the hydrothermal method and characterized by spectroscopy Energy Dispersive X-ray (EDX), X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM).The ceramic support (α-alumina) was prepared using the technique of forming powder and then subjected to the sintering temperature of 1400 °C/1h and characterized by XRD. The zeolite membrane preparation was performed by the method of secondary growth and characterized by XRD, SEM and mercury porosimetry. The obtained zeolite membrane could be confirmed by X-ray diffraction. From, the obtained SEM pictures it was possible to observe the formation of a homogeneous film on the zeolite surface of the ceramic support (α-alumina).

An ensemble synthesis strategy for fabrication of hollow fiber T-type zeolite membrane modules

2018 ◽  
Vol 563 ◽  
pp. 460-469 ◽  
Author(s):  
Miaomiao Ji ◽  
Xuechao Gao ◽  
Xuerui Wang ◽  
Yuting Zhang ◽  
Ji Jiang ◽  
...  
Keyword(s):  
Hollow Fiber ◽  
Zeolite Membrane ◽  
Synthesis Strategy ◽  
Type Zeolite ◽  
Membrane Modules
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