Partial oxidation of methane over a ruthenium phthalocyanine catalyst

Zhu, Yuan; Barat, Robert

doi:10.1016/j.ces.2014.04.028

Cited by 18 publications

(6 citation statements)

References 13 publications

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“…The reaction proceeds at a lower temperature than the gas-phase partial oxidation route [17][18][19][20], thus offering many advantages such as a reduction of undesired by-products and the ability to control the process temperature [21][22][23][24]. The catalysts used for this reaction usually contain group VIII transition metals, such as rhodium [25,26], ruthenium [27,28], platinum [29,30], palladium [31,32], nickel [33,34], iridium [35,36], and cobalt [37,38]. The reaction can proceed in short contact time reactors under high-temperature conditions [39][40][41].…”

Section: Introductionmentioning

confidence: 99%

RETRACTED: Computational Fluid Dynamics Modeling of the Catalytic Partial Oxidation of Methane in Microchannel Reactors for Synthesis Gas Production

Chen

Song

2018

Processes

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This paper addresses the issues related to the favorable operating conditions for the small-scale production of synthesis gas from the catalytic partial oxidation of methane over rhodium. Numerical simulations were performed by means of computational fluid dynamics to explore the key factors influencing the yield of synthesis gas. The effect of mixture composition, pressure, preheating temperature, and reactor dimension was evaluated to identify conditions that favor a high yield of synthesis gas. The relative importance of heterogeneous and homogenous reaction pathways in determining the distribution of reaction products was investigated. The results indicated that there is competition between the partial and total oxidation reactions occurring in the system, which is responsible for the distribution of reaction products. The contribution of heterogeneous and homogeneous reaction pathways depends upon process conditions. The temperature and pressure play an important role in determining the fuel conversion and the synthesis gas yield. Undesired homogeneous reactions are favored in large reactors, and at high temperatures and pressures, whereas desired heterogeneous reactions are favored in small reactors, and at low temperatures and pressures. At atmospheric pressure, the selectivity to synthesis gas is higher than 98% at preheating temperatures above 900 K when oxygen is used as the oxidant. At pressures below 1.0 MPa, alteration of the dimension in the range of 0.3 and 1.5 mm does not result in significant difference in reactor performance, if made at constant inlet flow velocities. Air shows great promise as the oxidant, especially at industrially relevant pressure 3.0 MPa, thereby effectively inhibiting the initiation of undesired homogeneous reactions.

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Section: Introductionmentioning

confidence: 99%

RETRACTED: Computational Fluid Dynamics Modeling of the Catalytic Partial Oxidation of Methane in Microchannel Reactors for Synthesis Gas Production

Chen

Song

2018

Processes

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“…phthalocyanine (Komissar and Levin, 1964;Zhu and Barat, 2014), triallylamine (Salam et al, 2014)) and a chelated transition metal ion (e.g. Fe, Co), are one of promising Ptalterative catalysts for the ORR (Smirnova et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Cobalt modified two-dimensional polypyrrole synthesized in a flat nanoreactor for the catalysis of oxygen reduction

Ding

et al. 2015

Chemical Engineering Science

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“…The DR experiments in this study were conducted with a previously shown setup (Zhu and Barat, 2014). Calibrated mass flow controllers govern CO 2 , CH 4 , and diluent He.…”

Section: Methodsmentioning

confidence: 99%

“…Indirect CH 4 conversion, therefore, is a preferred pathway to liquid fuel production from natural gas. These pathways begin with synthesis gas (syngas—primarily CO and H 2 ) production by partial oxidation (Zhu and Barat, 2014), and steam or dry (CO 2 ) dry reforming (DR) (Bartholomew and Farrauto, 2005). Methane DR (CH 4 + CO 2 = 2CO + 2H 2 ) removes two greenhouse gases, thus offering both commercial and environmental benefits (Ma et al, 2013; Qu et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Dry reforming of methane over palladium–platinum on carbon nanotube catalyst

Zhu

Chen

et al. 2018

Chemical Engineering Communications

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A dry reforming (DR) catalyst based on bimetallic Pd–Pt supported on carbon nanotubes is presented. The catalyst was prepared using a microwave-induced synthesis. It showed enhanced DR activity in the 773–923 K temperature range at 3 atm. Observed carbon balances between the reactant and product gases imply minimal carbon deposition. A global three-reaction (reversible) kinetic model—consisting of DR, reverse water gas shift, and CH4 decomposition (MD)—adequately simulates the observed concentrations, product H2/CO ratios, and reactant conversions. Analysis shows that, under the conditions of this study, the DR and MD reactions are net forward and far from equilibrium, while the RWGS is near equilibrium

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Partial oxidation of methane over a ruthenium phthalocyanine catalyst

Cited by 18 publications

References 13 publications

RETRACTED: Computational Fluid Dynamics Modeling of the Catalytic Partial Oxidation of Methane in Microchannel Reactors for Synthesis Gas Production

RETRACTED: Computational Fluid Dynamics Modeling of the Catalytic Partial Oxidation of Methane in Microchannel Reactors for Synthesis Gas Production

Cobalt modified two-dimensional polypyrrole synthesized in a flat nanoreactor for the catalysis of oxygen reduction

Dry reforming of methane over palladium–platinum on carbon nanotube catalyst

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