Reaction mechanism on reduction surface of mixed conductor membrane for H2 production by coal-gas

Shen, Peijun; Ding, Wei; Zhou, Yangen; Huang, Shaoqing

doi:10.1016/j.apsusc.2010.03.075

Cited by 14 publications

(15 citation statements)

References 41 publications

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“…32 It has been reported that oxidation kinetic sequence in the presence of reducing gases is in the order of H 2 > CO > CH 4 and this order correlates with the tendency of the reducing gases to react with surface oxygen ions. [33][34][35] Our results correlate to this sequence and are distinguished by the H 2 and CO conversions especially in the lower temperatures. However, opposed to previously reported data, this study was conducted in the presence of both H 2 and CO due to their merit of being simultaneously produced during POM reactions.…”

Section: Pom Reaction In Catalytic Membrane Reactorsupporting

confidence: 84%

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La_0.6Sr_0.4Co_0.8Ga_0.2O_3‐δ (LSCG) hollow fiber membrane reactor: Partial oxidation of methane at medium temperature

Kathiraser

Kawi

2013

AIChE Journal

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In this study, La 0.6 Sr 0.4 Co 0.8 Ga 0.2 O 3-d (LSCG) hollow fiber membrane reactor was integrated with Ni/LaAlO 3 -Al 2 O 3 catalyst for the catalytic partial oxidation of methane (POM) reaction. The process was successfully carried out in the medium temperature range (600-800 C) for reaction of blank POM with bare membrane, catalytic POM reaction and swept with H 2 :CO gas mixture. For the catalytic POM reaction, enhancement in selectivity to H 2 and CO is obtained between 650-750 C when O 2 :CH 4 <1. High CH 4 conversion of 97% is achieved at 750 C with corresponding H 2 and CO selectivity of about 74 and 91%. The oxygen flux of the membranes also increased with the increase in oxygen partial pressure gradient across the membrane. The postreacted membranes were tested via XRD and FESEM-EDX for their crystallinity and surface morphology. XPS analysis was further used to investigate the O1s, Co 2p and Sr 3d binding energies of the segregated elements from the reducing reaction environment.

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Section: Pom Reaction In Catalytic Membrane Reactorsupporting

confidence: 84%

“…Also at increasing temperatures, the CO polarization enhances the affinity with perovskite surface, thus, restraining the adsorption of H 2 on the membrane surface. 33 …”

Section: Pom Reaction In Catalytic Membrane Reactormentioning

confidence: 97%

La_0.6Sr_0.4Co_0.8Ga_0.2O_3‐δ (LSCG) hollow fiber membrane reactor: Partial oxidation of methane at medium temperature

Kathiraser

Kawi

2013

AIChE Journal

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“…H 2 oxidation was found to be faster than CO oxidation on many oxide surfaces, such as BaCo 0.7 Fe 0.2 Nb 0.1 O 3Àd , [59] La 0.9 Ca 0.1 FeO 3Àd , [45] and Ni/YSZ. [60] As the sweep side surface kinetics are rate limiting at 990 8Cw ith aC O 2 concentration > 50 mol%, adding more reactive fuel on the sweep side is expected to improve the reduction of CO 2 .T he results are shown in Figure 6.…”

Section: Rate Enhancementmentioning

confidence: 98%

Hydrogen‐assisted Carbon Dioxide Thermochemical Reduction on La_0.9Ca_0.1FeO_3−δ Membranes: A Kinetics Study

Ghoniem

2018

ChemSusChem

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“…In previous research [13][14][15] , we reported a new process for hydrogen production from Coke oven gas, in which one side of MIEC membrane exposed to Air and the other side to Coke oven gas. The disc-shape membrane reactor was constructed from BCFNO and partial oxidation of methane in Coke oven gas was carried out.…”

Section: Resultsmentioning

confidence: 99%

Interface Reaction Between BaCo0.7Fe0.2Nb0.1O3-d Membrane and Ni-Based Catalyst

Yang¹,

Zhang²,

Ding³

2014

Asian J. Chem.

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The interface reaction between BaCo0.7Fe0.2Nb0.1O3-δ (BCFNO) membrane and Ni-based catalyst materials were studied by analyzing the different catalyst materials, such as Al2O3, MgO, YSZ and TiO2. XRD and SEM characterization of the BCFNO membrane show that the Al2O3 and TiO2 easily react with BCFNO membrane and form a new phase. The MgO also reacts with BCFNO membrane in long time running, while the reaction is relatively small. However, the YSZ does not react with BCFNO. This provided a way to choose the suitable catalyst materials for membrane reactor during the long time running operation.

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Reaction mechanism on reduction surface of mixed conductor membrane for H2 production by coal-gas

Cited by 14 publications

References 41 publications

La_0.6Sr_0.4Co_0.8Ga_0.2O_3‐δ (LSCG) hollow fiber membrane reactor: Partial oxidation of methane at medium temperature

La_0.6Sr_0.4Co_0.8Ga_0.2O_3‐δ (LSCG) hollow fiber membrane reactor: Partial oxidation of methane at medium temperature

Hydrogen‐assisted Carbon Dioxide Thermochemical Reduction on La_0.9Ca_0.1FeO_3−δ Membranes: A Kinetics Study

Interface Reaction Between BaCo0.7Fe0.2Nb0.1O3-d Membrane and Ni-Based Catalyst

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Reaction mechanism on reduction surface of mixed conductor membrane for H2 production by coal-gas

Cited by 14 publications

References 41 publications

La0.6Sr0.4Co0.8Ga0.2O3‐δ (LSCG) hollow fiber membrane reactor: Partial oxidation of methane at medium temperature

La0.6Sr0.4Co0.8Ga0.2O3‐δ (LSCG) hollow fiber membrane reactor: Partial oxidation of methane at medium temperature

Hydrogen‐assisted Carbon Dioxide Thermochemical Reduction on La0.9Ca0.1FeO3−δ Membranes: A Kinetics Study

Interface Reaction Between BaCo0.7Fe0.2Nb0.1O3-d Membrane and Ni-Based Catalyst

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La_0.6Sr_0.4Co_0.8Ga_0.2O_3‐δ (LSCG) hollow fiber membrane reactor: Partial oxidation of methane at medium temperature

La_0.6Sr_0.4Co_0.8Ga_0.2O_3‐δ (LSCG) hollow fiber membrane reactor: Partial oxidation of methane at medium temperature

Hydrogen‐assisted Carbon Dioxide Thermochemical Reduction on La_0.9Ca_0.1FeO_3−δ Membranes: A Kinetics Study