Elucidation of the Oxygen Surface Kinetics in a Coated Dual-Phase Membrane for Enhancing Oxygen Permeation Flux

2017 ◽  
Vol 9 (23) ◽  
pp. 19917-19924 ◽  
Author(s):  
Beom Tak Na ◽  
Jeong Hwan Park ◽  
Jong Hyuk Park ◽  
Ji Haeng Yu ◽  
Jong Hoon Joo
Keyword(s):  
Oxygen Permeation ◽  
Dual Phase ◽  
Permeation Flux ◽  
Surface Kinetics ◽  
Oxygen Permeation Flux ◽  
Oxygen Surface

A chemically and mechanically stable dual-phase membrane with high oxygen permeation flux

2020 ◽  
Vol 8 (45) ◽  
pp. 23884-23893
Author(s):  
Gyeong Duk Nam ◽  
Gahyeon Lee ◽  
Soomin Choi ◽  
Jinsil Lee ◽  
Sun-Ju Song ◽  
...  
Keyword(s):  
Oxygen Permeation ◽  
High Oxygen ◽  
Dual Phase ◽  
Permeation Flux ◽  
Oxygen Permeation Flux

This contribution details our comprehensive efforts to design a chemically and mechanically stable dual-phase membrane with a high oxygen permeation flux.

Guidelines for selecting coating materials for a high oxygen permeation flux in a fluorite-rich dual-phase membrane

2017 ◽  
Vol 535 ◽  
pp. 200-207 ◽  
Author(s):  
Young-il Kwon ◽  
Beom Tak Na ◽  
Jeong Hwan Park ◽  
Kyong Sik Yun ◽  
Sung Kook Hong ◽  
...  
Keyword(s):  
Oxygen Permeation ◽  
High Oxygen ◽  
Dual Phase ◽  
Permeation Flux ◽  
Coating Materials ◽  
Oxygen Permeation Flux

Catalytic Partial Oxidation of Coke Oven Gas to Syngas over Ni/SiO2 Catalyst Modified by Rare Earth Metal Oxide in a Membrane Reactor

2010 ◽  
Vol 156-157 ◽  
pp. 1024-1028
Author(s):  
Da Hai Hu ◽  
Xiong Gang Lu ◽  
Hong Wei Cheng ◽  
Wei Zhong Ding
Keyword(s):  
Rare Earth ◽  
Partial Oxidation ◽  
Membrane Reactor ◽  
Coke Oven ◽  
Oxygen Permeation ◽  
Catalytic Partial Oxidation ◽  
Permeation Flux ◽  
Coke Oven Gas ◽  
Permeable Membrane ◽  
Oxygen Permeation Flux

The performance of Ni/SiO2 Catalysts modified by La2O3, ZrO2 and CeO2 were tested in a BaCo0.7Fe0.2Nb0.1O3-δ (BCFNO) membrane reactor by catalytic partial oxidation of coke oven gas (COG) under atmospheric pressure. The results show that the oxygen permeation flux increased dramatically with Ni/RxOy/SiO2 (R = La, Zr or Ce) catalysts by adding the element of rare earth especially the La during the reforming reaction. At optimized reaction conditions, the dense oxygen permeable membrane had an oxygen permeation flux around 16.4 ml/cm2•min and a CH4 conversion of 99.2% have been achieved at 900 oC.

Bundling strategy to simultaneously improve the mechanical strength and oxygen permeation flux of the individual perovskite hollow fiber membranes

2017 ◽  
Vol 527 ◽  
pp. 137-142 ◽  
Author(s):  
Ran An ◽  
Jian Song ◽  
Yuan Li ◽  
Xiaoyao Tan ◽  
Jaka Sunarso ◽  
...  
Keyword(s):  
Mechanical Strength ◽  
Hollow Fiber ◽  
Oxygen Permeation ◽  
Permeation Flux ◽  
Hollow Fiber Membranes ◽  
Fiber Membranes ◽  
Oxygen Permeation Flux ◽  
The Individual

scholarly journals Ultrahigh oxygen permeation flux through supported Ba0.5Sr0.5Co0.8Fe0.2O3−δ membranes

2011 ◽  
Vol 377 (1-2) ◽  
pp. 198-205 ◽  
Author(s):  
S. Baumann ◽  
J.M. Serra ◽  
M.P. Lobera ◽  
S. Escolástico ◽  
F. Schulze-Küppers ◽  
...  
Keyword(s):  
Oxygen Permeation ◽  
Permeation Flux ◽  
Oxygen Permeation Flux

Improving Performance of BaCo0.7Fe0.2Nb0.1O3-δ Ceramic Membrane by a Surface-Coating Layer for Partial Oxidation of Coke Oven Gas

2010 ◽  
Vol 154-155 ◽  
pp. 877-881 ◽  
Author(s):  
Hong Wei Cheng ◽  
Xiong Gang Lu ◽  
Da Hai Hu ◽  
Yu Wen Zhang ◽  
Wei Zhong Ding ◽  
...  
Keyword(s):  
Partial Oxidation ◽  
Surface Coating ◽  
Ceramic Membrane ◽  
Coating Layer ◽  
Coke Oven ◽  
Oxygen Permeation ◽  
Permeation Flux ◽  
Coke Oven Gas ◽  
Oxygen Permeation Flux ◽  
Partial Oxidation Reforming

The BaCo0.7Fe0.2Nb0.1O3-δ (BCFNO) membranes combined with Ce0.8Re0.2O2-δ (Re=La, Y) layer on the permeation side were used for hydrogen production by partial oxidation reforming of coke oven gas (COG). The Ce0.8Re0.2O2-δ improved the oxygen permeation flux of the membrane by 11–28% at 750 oC. The high oxygen permeation flux achieved using the Ce0.8Re0.2O2-δ surface-coating layer in this work are quite encouraging with a maximum value reaching 19.7 ml/cm2•min at 900 oC, which will be promising surface modification materials in the catalytic partial oxidation reforming of COG.

Mixed conducting membranes - Macrostructure related oxygen permeation flux

AIChE Journal ◽  
2010 ◽  
Vol 56 (12) ◽  
pp. 3084-3090 ◽  
Author(s):  
Barbara Zydorczak ◽  
Kang Li ◽  
Xiaoyao Tan
Keyword(s):  
Oxygen Permeation ◽  
Permeation Flux ◽  
Oxygen Permeation Flux ◽  
Conducting Membranes

Hydrogen Production from Methane by Using Composite-Type Oxygen Permeable Membranes

2005 ◽  
Vol 885 ◽  
Author(s):  
Hitoshi Takamura ◽  
Masayuki Ogawa ◽  
Yusuke Aizumi ◽  
Atsunori Kamegawa ◽  
Masuo Okada
Keyword(s):  
Stainless Steel ◽  
Thermal Expansion ◽  
Oxygen Permeation ◽  
Methane Reforming ◽  
Permeation Flux ◽  
Permeable Membrane ◽  
Composite Type ◽  
Oxygen Permeation Flux ◽  
Tape Cast ◽  
Reforming Reactions

ABSTRACTThis paper describes preparation and methane reforming characteristics of a proto-type reformer based on a composite-type oxygen permeable membrane. The tape-cast membrane of Sm-doped CeO2 and 15 vol% MnFe2O4 composite was combined with ferric stainless steel separator with a same thermal expansion coefficient. For the reformer module, high CH4 conversion, CO and H2 selectivity of 96%, 84% and 89% were achieved, respectively. Based on C, H and O balances, oxygen permeation flux was found to be 5.7 mu-mol/cm2s. Joule heat caused by the oxygen permeation was estimated to be approximately 17.5 W, and this covered most part of heat required for reforming reactions.

scholarly journals Preparation and Oxygen Permeability of BaCo0.7Fe0.2Nb0.1O3-δMembrane Modified by Ce0.8Y0.2O2-δPorous Layer on the Air Side

2013 ◽  
Vol 2013 ◽  
pp. 1-6
Author(s):  
Yuan Qiang ◽  
Zhen Qiang ◽  
Li Rong
Keyword(s):  
Porous Layer ◽  
Oxygen Permeability ◽  
Ceramic Membrane ◽  
Coke Oven ◽  
Xrd Analysis ◽  
Oxygen Permeation ◽  
Permeation Flux ◽  
Coke Oven Gas ◽  
Dense Ceramic ◽  
Oxygen Permeation Flux

BaCo0.7Fe0.2Nb0.1O3−δ(BCFN) dense ceramic membrane with submicron-Ce0.8Y0.2O2−δ(YDC) porous layer was investigated by the partial oxidation of coke oven gas (COG) in hydrogen production. XRD analysis showed this composite had good stability and no chemical reaction at high temperature. SEM and TEM characterization further showed BCFN membrane was uniformly modified by YDC porous layer (about 5~6 μm thickness) formed by the accumulation of relative nanoparticles. At the respective COG flux and air flux of 108 mL/min and 173 mL/min, the oxygen permeation flux of BCFN modified by submicron-YDC porous layer reached 16.62 mL·min−1·cm−2, which was about 23.5% higher than that of pure BCFN membrane. Therefore, submicron-YDC porous layer obviously improved the oxygen permeation flux of BCFN membrane and its stability at 875°C.

Two High Activity Catalysts for the Reforming of Coke Oven Gas to H2 and CO in BCFNO Membrane Reactor

2014 ◽  
Vol 628 ◽  
pp. 319-322
Author(s):  
Zhi Bin Yang
Keyword(s):  
High Activity ◽  
Membrane Reactor ◽  
Coke Oven ◽  
Oxygen Permeation ◽  
Experimental Result ◽  
High Catalytic Activity ◽  
Permeation Flux ◽  
Coke Oven Gas ◽  
Oxidation Of Methane ◽  
Oxygen Permeation Flux

In this paper we found two catalysts exhibit high catalytic activity and stability during the partial oxidation of methane (POM) in Coke oven gas (COG) in BCFNO membrane reactor. Such as the NiO/MgO catalyst, we discussed the COG and air flow rate on the performance of reforming of COG. The results show that the NiO/MgO catalyst exhibits high activity. The experimental result of the CH4 conversion, selectivity of H2 and CO were suited well to the result of thermodynamic analysis. And the LiNiCeO/γ-Al2O3 catalyst, we discussed the LiNiCeO/γ-Al2O3 catalysts with different amount CeO2 in order to compare the reaction performance on the membrane reactor. The results show that the oxygen permeation flux increased significantly with increasing the amount of CeO2 during the POM in COG. Such as, the LiNi15%CeO/γ-Al2O3 catalyst with a oxygen permeation flux of 10.6 ml⋅cm-2⋅min-1 and a 100% CH4 conversion were obtained at 875 oC.

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