Methanol Decomposition to Synthesis Gas over Supported Platinum-Containing Catalysts

IF 0.7 Q4 ENGINEERING, CHEMICAL Catalysis in Industry Pub Date : 2023-12-26 DOI:10.1134/S2070050423040037

S. D. Badmaev, V. D. Belyaev, D. I. Potemkin, P. V. Snytnikov, V. A. Sobyanin, V. V. Kharton

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Abstract

The properties of supported Pt-containing granular (Pt/Ce_0.75Zr_0.25O_{2 – δ}) and structured catalysts (Pt/Ce_0.75Zr_0.25O_{2 – δ}/η-Al₂O₃/FeCrAl) in methanol decomposition to synthesis gas for feeding solid oxide fuel cells have been studied. It has been shown that the use of a structured catalyst for the methanol decomposition reaction is promising. It has been found that the addition of a small amount of oxygen to the feed mixture hinders the formation of carbon and thereby increases the on-stream stability of the catalyst. At atmospheric pressure, a temperature of ≈400°C, a reaction mixture feed space velocity of 5.6 L/(g_cat h), and a CH₃OH : air volume ratio of 1, the proposed 0.15 wt % Pt/8 wt % Ce_0.75Zr_0.25O_{2 – δ}/6 wt % η-Al₂O₃/FeCrAl structured catalyst can provide a complete methanol conversion to synthesis gas with a total content of H₂ and CO of ≈64 vol % and a productivity with respect to synthesis gas of ≈6.7 L(H₂ + CO)/(g_cat h).

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甲醇在含铂载体催化剂上分解为合成气

摘要研究了支撑型含铂颗粒催化剂（Pt/Ce0.75Zr0.25O2 - δ）和结构催化剂（Pt/Ce0.75Zr0.25O2 - δ/η-Al2O3/FeCrAl）在甲醇分解为合成气供固体氧化物燃料电池中的特性。研究表明，在甲醇分解反应中使用结构催化剂很有前景。研究发现，在进料混合物中加入少量氧气会阻碍碳的形成，从而提高催化剂的在线稳定性。在常压、温度≈400°C、反应混合物进料空间速度为 5.6 L/(gcat h)、CH3OH : 空气体积比为 1 的条件下，拟议的 0.15 wt % Pt/8 wt % Ce0.75Zr0.25O2 - δ/6 wt % η-Al2O3/FeCrAl 结构催化剂可将甲醇完全转化为合成气，H2 和 CO 的总含量≈64 vol %，合成气生产率≈6.7 L(H2 + CO)/(gcat h)。

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来源期刊

Catalysis in Industry ENGINEERING, CHEMICAL-

CiteScore

1.30

自引率

14.30%

发文量

期刊介绍： The journal covers the following topical areas: Analysis of specific industrial catalytic processes: Production and use of catalysts in branches of industry: chemical, petrochemical, oil-refining, pharmaceutical, organic synthesis, fuel-energetic industries, environment protection, biocatalysis; technology of industrial catalytic processes (generalization of practical experience, improvements, and modernization); technology of catalysts production, raw materials and equipment; control of catalysts quality; starting, reduction, passivation, discharge, storage of catalysts; catalytic reactors.Theoretical foundations of industrial catalysis and technologies: Research, studies, and concepts : search for and development of new catalysts and new types of supports, formation of active components, and mechanochemistry in catalysis; comprehensive studies of work-out catalysts and analysis of deactivation mechanisms; studies of the catalytic process at different scale levels (laboratory, pilot plant, industrial); kinetics of industrial and newly developed catalytic processes and development of kinetic models; nonlinear dynamics and nonlinear phenomena in catalysis: multiplicity of stationary states, stepwise changes in regimes, etc. Advances in catalysis: Catalysis and gas chemistry; catalysis and new energy technologies; biocatalysis; nanocatalysis; catalysis and new construction materials.History of the development of industrial catalysis.