One-Step Synthesis of Liquid Hydrocarbons from CO2 Using Hybrid Intergrowth Structure Zeolites

IF 1.3 4区工程技术 Q3 CHEMISTRY, ORGANIC Petroleum Chemistry Pub Date : 2024-01-30 DOI:10.1134/s0965544123080091

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Abstract

One-step CO₂ conversion to liquid hydrocarbons (Emission-to-Liquid) was carried out at 340°C and 10.0 MPa in the presence of tandem catalyst. This catalyst consisted of two components loaded in a layered manner: a copper–zinc oxide component responsible for the synthesis of methanol from CO₂, and a zeolite component responsible for the conversion of methanol to liquid hydrocarbons. The structural effects of the zeolite component (Hybrid Intergrowth Structure Zeolites) on the yield and hydrocarbon composition of the liquid product were investigated. The textural properties of the zeolite component were found to be critical to the hydrocarbon composition of the liquid product. Hybrid co-crystalline structures, namely MFI–MEL and MFI–MCM-41, with their large volume of mesopores, significantly enhanced the content of aromatics in the liquid hydrocarbon product. This was achieved not only due to the reduced diffusion limitations for product removal from the zeolite pores but also due to the activation of secondary aromatization reactions in the catalyst mesopores.

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利用混合互生结构沸石一步合成二氧化碳液态烃

摘要在 340°C 和 10.0 MPa 的条件下，在串联催化剂的作用下进行了一步式二氧化碳转化为液态碳氢化合物（排放转化为液体）的研究。这种催化剂由以分层方式装填的两种组分组成：一种是负责从二氧化碳合成甲醇的铜锌氧化物组分，另一种是负责将甲醇转化为液态烃的沸石组分。研究了沸石成分（混合互生结构沸石）的结构对液体产品的产量和碳氢化合物成分的影响。研究发现，沸石成分的质地特性对液体产品的碳氢化合物成分至关重要。混合共晶结构（即 MFI-MEL 和 MFI-MCM-41）具有大量中孔，可显著提高液态烃产品中的芳烃含量。这不仅是因为从沸石孔中去除产品的扩散限制减少了，还因为催化剂介孔中的二次芳香化反应被激活了。

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来源期刊

Petroleum Chemistry 工程技术-工程：化工

CiteScore

2.50

自引率

21.40%

发文量

102

审稿时长

6-12 weeks

期刊介绍： Petroleum Chemistry (Neftekhimiya), founded in 1961, offers original papers on and reviews of theoretical and experimental studies concerned with current problems of petroleum chemistry and processing such as chemical composition of crude oils and natural gas liquids; petroleum refining (cracking, hydrocracking, and catalytic reforming); catalysts for petrochemical processes (hydrogenation, isomerization, oxidation, hydroformylation, etc.); activation and catalytic transformation of hydrocarbons and other components of petroleum, natural gas, and other complex organic mixtures; new petrochemicals including lubricants and additives; environmental problems; and information on scientific meetings relevant to these areas. Petroleum Chemistry publishes articles on these topics from members of the scientific community of the former Soviet Union.