Scalable Polymeric Few-Nanometer Organosilica Membranes with Hydrothermal Stability for Selective Hydrogen Separation

ACS Nano ◽  
2021 ◽  
Author(s):  
Lingxiang Zhu ◽  
Liang Huang ◽  
Surendar R. Venna ◽  
Adrienne K. Blevins ◽  
Yifu Ding ◽  
...  
Keyword(s):  
Hydrothermal Stability ◽  
Hydrogen Separation

A novel strategy to enhance hydrothermal stability of Pd-doped organosilica membrane for hydrogen separation

2017 ◽  
Vol 253 ◽  
pp. 55-63 ◽  
Author(s):  
Jiaojiao Lei ◽  
Huating Song ◽  
Yibin Wei ◽  
Shuaifei Zhao ◽  
Hong Qi
Keyword(s):  
Hydrothermal Stability ◽  
Hydrogen Separation ◽  
Novel Strategy

Design of Silica Networks for Development of Highly Permeable Hydrogen Separation Membranes with Hydrothermal Stability

2009 ◽  
Vol 131 (2) ◽  
pp. 414-415 ◽  
Author(s):  
Masakoto Kanezashi ◽  
Kazuya Yada ◽  
Tomohisa Yoshioka ◽  
Toshinori Tsuru
Keyword(s):  
Hydrothermal Stability ◽  
Hydrogen Separation ◽  
Separation Membranes

scholarly journals Hydrothermal Stability and Performance of Silica-Zirconia Membranes for Hydrogen Separation in Hydrothermal Conditions.

2001 ◽  
Vol 34 (4) ◽  
pp. 523-530 ◽  
Author(s):  
KAZUHIRO YOSHIDA ◽  
YOSHIO HIRANO ◽  
HIRONORI FUJII ◽  
TOSHINORI TSURU ◽  
MASASHI ASAEDA
Keyword(s):  
Hydrothermal Stability ◽  
Hydrogen Separation ◽  
Hydrothermal Conditions ◽  
And Performance

scholarly journals The Hydrothermal Stability and the Properties of Non- and Strongly-Interacting Rh Species over Rh/γ, θ-Al2O3 Catalysts

Catalysts ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 99
Author(s):  
Guanghao Cheng ◽  
Gurong Shen ◽  
Jun Wang ◽  
Yunhao Wang ◽  
Weibo Zhang ◽  
...  
Keyword(s):  
Activation Energy ◽  
Apparent Activation Energy ◽  
Aging Time ◽  
Reaction Path ◽  
Aging Treatment ◽  
Hydrothermal Stability ◽  
Hydrothermal Aging ◽  
Strongly Interacting

The present work reports the effects of γ-, θ-phase of alumina on the hydrothermal stability and the properties of non- and strongly-interacting Rh species of the Rh/Al2O3 catalysts. Comparing to γ-Al2O3, θ-Al2O3 can not only reduce the amount of occluded Rh but also better stabilize Rh during hydrothermal aging treatment. When the aging time was prolonged to 70 h, all the non-interacting Rh was transformed into strongly-interacting Rh and occluded Rh. The XPS results indicated that non- and strongly-interacting Rh might exist in the form of Rh/Rh3+ and Rh4+, respectively. CO-NO reaction was chosen as a probe reaction to research more information about non- and strongly-interacting Rh. The two Rh species had similar apparent activation energy (Eapp) of 170 kJ/mol, which indicated that non- and strongly-interacting Rh follow the same reaction path. The non-interacting Rh was removed from aged samples by the acid-treated method, and obtained results showed that only 2.5% and 4.0% non-interacting Rh was maintained in aged Rh/γ-Al2O3 and Rh/θ-Al2O3.

scholarly journals Enhancement of Hydrothermal Stability and CO2 Adsorption of Mg-MOF-74/MCF Composites

ACS Omega ◽  
2021 ◽  
Vol 6 (11) ◽  
pp. 7739-7745
Author(s):  
Chunling Xin ◽  
Yang Ren ◽  
Zhaofei Zhang ◽  
Lili Liu ◽  
Xia Wang ◽  
...  
Keyword(s):  
Co2 Adsorption ◽  
Hydrothermal Stability

scholarly journals Hydrogen Separation and Purification from Various Gas Mixtures by Means of Electrochemical Membrane Technology in the Temperature Range 100–160 °C

Membranes ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 282
Author(s):  
Leandri Vermaak ◽  
Hein W. J. P. Neomagus ◽  
Dmitri G. Bessarabov
Keyword(s):  
Hydrogen Permeability ◽  
Gas Mixtures ◽  
Open Circuit ◽  
Hydrogen Separation ◽  
Proton Exchange ◽  
Limiting Current ◽  
Separation Performance ◽  
Separation And Purification ◽  
Irreversible Damage ◽  
Temperature Range

This paper reports on an experimental evaluation of the hydrogen separation performance in a proton exchange membrane system with Pt-Co/C as the anode electrocatalyst. The recovery of hydrogen from H2/CO2, H2/CH4, and H2/NH3 gas mixtures were determined in the temperature range of 100–160 °C. The effects of both the impurity concentration and cell temperature on the separation performance of the cell and membrane were further examined. The electrochemical properties and performance of the cell were determined by means of polarization curves, limiting current density, open-circuit voltage, hydrogen permeability, hydrogen selectivity, hydrogen purity, and cell efficiencies (current, voltage, and power efficiencies) as performance parameters. High purity hydrogen (>99.9%) was obtained from a low purity feed (20% H2) after hydrogen was separated from H2/CH4 mixtures. Hydrogen purities of 98–99.5% and 96–99.5% were achieved for 10% and 50% CO2 in the feed, respectively. Moreover, the use of proton exchange membranes for electrochemical hydrogen separation was unsuccessful in separating hydrogen-rich streams containing NH3; the membrane underwent irreversible damage.

Nature of cerium on improving low-temperature hydrothermal stability of SAPO-34

2020 ◽  
Author(s):  
Qingyun Wang ◽  
Meiqing Shen ◽  
Jianqiang Wang ◽  
Chen Wang ◽  
Jun Wang
Keyword(s):  
Low Temperature ◽  
Hydrothermal Stability
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