Hydrogenation of СО2 into Hydrocarbons on Bifunctional Catalysts

IF 1.3 4区工程技术 Q3 CHEMISTRY, ORGANIC

Petroleum Chemistry Pub Date : 2024-01-30 DOI:10.1134/s0965544123090025

引用次数: 0

Abstract

Direct synthesis of liquid hydrocarbons from СО₂ and Н₂ on a combined bifunctional catalyst consisting of ZnAlO_x or ZnCrO_x (oxide catalysts for the synthesis of hydrocarbons from СО and Н₂) and HZSM-5 zeolites with different SiO₂/Al₂O₃ molar ratios was studied. The physicochemical characteristics of the zeolites, namely, acidity evaluated by temperature-programmed ammonia desorption, porosity, and specific surface area, were examined. The catalyst performance was studied on a micro-pilot installation in the flow recirculation mode at 340°С and a pressure of 10 MPa. The ZnAlO_x/ZnZSM-5(40) catalyst exhibits the highest selectivity to С₅₊ hydrocarbons, which is associated with the presence of strong Brønsted acid sites on its surface.

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在双功能催化剂上将 СО2 加氢转化为碳氢化合物

摘要研究了在由 ZnAlOx 或 ZnCrOx（用于从СОО和Н2 合成碳氢化合物的氧化物催化剂）和具有不同 SiO2/Al2O3 摩尔比的 HZSM-5 沸石组成的组合双功能催化剂上从СО2 和Н2 直接合成液态碳氢化合物的过程。研究还考察了沸石的物理化学特性，即通过温度编程氨解吸法评估的酸度、孔隙率和比表面积。在 340°С 和 10 兆帕压力下的流动再循环模式下，在微型中试装置上对催化剂性能进行了研究。ZnAlOx/ZnZSM-5(40) 催化剂对 С5+ 碳氢化合物具有最高的选择性，这与其表面存在强勃氏酸位点有关。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.