YSZ‐SrCo0.4Fe0.6O3‐δ membranes for the partial oxidation of methane to syngas

Gu, Xiaobin; Jin, Wanqin; Chen, Changlin; Xu, Nanping; Jun, Shi; H., Y.

doi:10.1002/aic.690480918

Cited by 59 publications

(65 citation statements)

References 26 publications

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“…Co-enriched surface phases whose large grains were broken to finer grains have been reported on permeate sides of membrane surfaces due to the erosion caused by the reducing atmosphere. 7,34,46,47 Furthermore, Sr enrichment is observed more clearly on the internal surfaces of all the post reacted membranes. Sr-enrichment in the form of SrCO 3 has also been observed by ten Elshof et al 48 who conducted experiments of oxidative coupling of methane in a La 0.6 Sr 0.4-Co 0.8 Fe 0.2 O 3 membrane reactor.…”

Section: Pom Reaction Pathways Occurring On Catalyst Surface In Catalmentioning

confidence: 46%

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 Pathways Occurring On Catalyst Surface In Catalmentioning

confidence: 46%

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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“…(1) reducing the relative amount of cobalt in the perovskite phase; (2) co-doping the material with less reducible ions, e.g. Zr 4+ [15,18,19,[39][40][41][42][43], Ga 3+ [21,48,49,52]; (3) adding a toughening material such as zirconia or alumina; (4) developing cobaltfree oxide membranes with sufficient oxygen permeation flux. We developed a membrane, BaCo 0.4 Fe 0.4 Zr 0.2 O 3)d , with low and co-doped with less reducible ion Zr 4+ [19].…”

Section: Pom and Poh Reactions In Oxygen Permeable Membrane Reactormentioning

confidence: 44%

“…Doping less reducible ions, such as Ga 3+ [21], Ti 4+ [44], Zr 4+ [18,19,39,40], is regarded as another effective method to improve the stability of the membrane materials under reducing environments at high temperatures. BaZr 0.2 Co 0.4 Fe 0.4 O 3)d developed in our group [19,45] is an example, which can withstand syngas production experiment at 850°C for more than 2200 h [45].…”

Section: Development Of Miec Membrane Materialsmentioning

confidence: 49%

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Development and Application of Oxygen Permeable Membrane in Selective Oxidation of Light Alkanes

et al. 2005

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In this paper, oxygen permeable membrane used in membrane reactor for selective oxidation of alkanes will be discussed in detail. The recent developments for the membrane materials will be presented, and the strategy for the selection of the membrane materials will be outlined. The main applications of oxygen permeable membrane in selective oxidation of light alkanes will be summarized, which includes partial oxidation of methane (POM) to syngas and partial oxidation of heptane (POH) to produce H 2 , oxidative coupling of methane (OCM) to C 2 , oxidative dehydrogenation of ethane (ODE) to ethylene and oxidative dehydrogenation of propane (ODP) to propylene. Achievements for the membrane material developments and selective oxidation of light alkanes in membrane reactor in our group are highlighted.

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“…The increase of CH 4 partial pressure increased the oxygen flux, and then the CH 4 conversion. Gu et al 61 also reported that oxygen flux increased with increasing the methane partial pressure.…”

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confidence: 48%

A novel porous‐dense dual‐layer composite membrane reactor with long‐term stability

et al. 2013

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A porous-dense dual-layer composite membrane reactor was proposed. The dual-layer composite membrane composed of dense 0.5 wt % Nb 2 O 5 -doped SrCo 0.8 Fe 0.2 O 3-d (SCFNb) layer and porous Ba 0.3 Sr 0.7 Fe 0.9 Mo 0.1 O 3-d (BSFM) layer was prepared. The stability of SCFNb membrane reactor was improved significantly by the porous-dense dual-layer design philosophy. The porous BSFM surface-coating layer can effectively reduce the corrosion of the reducing atmosphere to the membrane, whereas the dense SCFNb layer permeated oxygen effectively. Compared with single-layer dense SCFNb membrane reactor, no degradation of performance was observed in the dual-layer membrane reactor under partial oxidation of methane during continuously operating for 1500 h at 850 C. At 900 C, oxygen flux of 18.6 mL (STP: Standard Temperature and Pressure) cm 22 min 21, hydrogen production of 53.67 mL (STP) cm 22 min 21, CH 4 conversion of 99.34% and CO selectivity of about 94% were achieved.

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YSZ‐SrCo_0.4Fe_0.6O_3‐δ membranes for the partial oxidation of methane to syngas

Cited by 59 publications

References 26 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

Development and Application of Oxygen Permeable Membrane in Selective Oxidation of Light Alkanes

A novel porous‐dense dual‐layer composite membrane reactor with long‐term stability

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YSZ‐SrCo0.4Fe0.6O3‐δ membranes for the partial oxidation of methane to syngas

Cited by 59 publications

References 26 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

Development and Application of Oxygen Permeable Membrane in Selective Oxidation of Light Alkanes

A novel porous‐dense dual‐layer composite membrane reactor with long‐term stability

Contact Info

Product

Resources

About

YSZ‐SrCo_0.4Fe_0.6O_3‐δ membranes for the partial oxidation of methane to syngas

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