Experimental and model-based analysis of membrane reactor performance for methane oxidative coupling: Effect of radial heat and mass transfer

Godini, Hamid Reza; Xiao, Shengnan; Kim, M.; Holst, Niko; Jašo, S.; Görke, Oliver; Steinbach, Jörg; Wozny, Günter

doi:10.1016/j.jiec.2013.09.022

Cited by 29 publications

(16 citation statements)

References 10 publications

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“…In Figure 20, the catalytic packed bed is placed inside a porous membrane tube, but it can also be placed in the annular space. The oxygen goes from the external to the internal side of the tube via the porous membrane, where it reaches the catalyst bed and reacts with the methane, which is fed to this internal part (20,41,(83)(84)(85)(86). The pressure drop over the membrane and the catalyst bed has to be properly tuned and carefully controlled to avoid back- permeation problems due to the porous nature of the membrane.…”

Section: Packed Bed Porous Membrane Reactormentioning

confidence: 99%

Advanced reactor concepts for oxidative coupling of methane

et al. 2017

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Oxidative coupling of methane (OCM) has been investigated as an interesting way to obtain higher hydrocarbons from natural gas. The aim of this article is to evaluate the reactor concepts for oxidative coupling of methane, from the 1980s through the current state of the art, giving a general insight into the reactor engineering possibilities and perspectives of application of OCM in large scale reactors. The concepts were classified according to the type of reactor bed, the heat management system, the oxygen feeding policy, the degree of integration with separation units, the relative cost, and the current demonstration on industrial scale.

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Section: Packed Bed Porous Membrane Reactormentioning

confidence: 99%

Advanced reactor concepts for oxidative coupling of methane

et al. 2017

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“…In the two cases, the driving force for the oxygen permeation is the oxygen chemical potential/partial pressure difference on both sides of the membrane [11,12]. Compared with traditional oxygen separation technologies, membrane technology features improved energy efficiency, superior oxygen selectivity (thus high oxygen purity), and compatibility with many industrial reaction systems, including selective oxidation of ethane (SOE) [13], oxidative coupling of methane (OCM) [14,15], and partial oxidation of methane (POM) [16,17] among other reactions. The mixed ionic and electronic conduction of solid oxide materials was initially described by Takahashi et al [18] in 1976.…”

Section: Introductionmentioning

confidence: 99%

Mixed Ionic-Electronic Conducting Membranes (MIEC) for Their Application in Membrane Reactors: A Review

et al. 2019

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Mixed ionic-electronic conducting membranes have seen significant progress over the last 25 years as efficient ways to obtain oxygen separation from air and for their integration in chemical production systems where pure oxygen in small amounts is needed. Perovskite materials are the most employed materials for membrane preparation. However, they have poor phase stability and are prone to poisoning when subjected to CO2 and SO2, which limits their industrial application. To solve this, the so-called dual-phase membranes are attracting greater attention. In this review, recent advances on self-supported and supported oxygen membranes and factors that affect the oxygen permeation and membrane stability are presented. Possible ways for further improvements that can be pursued to increase the oxygen permeation rate are also indicated. Lastly, an overview of the most relevant examples of membrane reactors in which oxygen membranes have been integrated are provided.

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“…The most vital challenge for the OCM is the stability of the catalyst. Among the known OCM catalysts, Mn x O y -Na 2 WO 4 /SiO is a promising one [17,18] in the literature for the commercialization of an industrial process [19][20][21][22][23][24][25][26][27][28]. Moreover, its catalytic performance (CH conversions of 20-30% at C 2 selectivities of approximately 70-80%) is superior to the most OCM catalysts.…”

Section: Introductionmentioning

confidence: 99%

Silica material variation for the MnxOy-Na2WO4/SiO2

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et al. 2016

Applied Catalysis A: General

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The oxidative coupling of methane (OCM) is one of the best methods for the direct conversion of methane. Among the known OCM catalysts, Mn x O y-Na 2 WO 4 /SiO 2 is a promising candidate for an industrial application, showing a high methane conversion and C 2 selectivity, with a good stability during long-term catalytic activity tests. In the present study, some results have been already published and discussed briefly in our previous short communication [Yildiz 2014]. However, we herein investigated comprehensively the influence of various silica support materials on the performance of the Mn x O y-Na 2 WO 4 /SiO 2 system in the OCM by means of ex situ and in situ XRD, BET, SEM and TEM characterization methods and showed new results to reveal possible support effects on the catalyst. The catalytic performance of most Mn x O y-Na 2 WO 4 /SiO 2 catalysts supported by different silica support materials did not differ substantially. However, the performance of the SBA-15 supported catalyst was outstanding and the methane conversion was nearly twofold higher in comparison to the other silica supported catalysts at similar C 2 selectivity as shown before in the communication [Yildiz 2014]. The reason of this substantial increase in performance could be the ordered mesoporous structure of the SBA-15 support material, homogeneous dispersion of active components and high number of active sites responsible for the OCM.

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Experimental and model-based analysis of membrane reactor performance for methane oxidative coupling: Effect of radial heat and mass transfer

Cited by 29 publications

References 10 publications

Advanced reactor concepts for oxidative coupling of methane

Advanced reactor concepts for oxidative coupling of methane

Mixed Ionic-Electronic Conducting Membranes (MIEC) for Their Application in Membrane Reactors: A Review

Silica material variation for the MnxOy-Na2WO4/SiO2

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