HETEROGENEOUS CATALYTIC HYDROGENATION OF CARBON DIOXIDE INTO HYDROCARBONS: ACHIEVEMENTS AND PROSPECTS

Sh.F Tagiyeva,E.H Ismailov

doi:10.32737/2221-8688-2020-4-485-500

Abstract

The works published over the past 10 years on the catalytic hydrogenation of carbon dioxide into methane and C2+ hydrocarbons are considered. The choice of catalysts based on their elemental and phase composition, structural-porous characteristics, grain-size and acidic properties, the reaction mechanism and problems and prospects for the industrial application of heterogeneous catalytic conversion of CO2 to hydrocarbons are discussed.

Highlights

Today, there is no doubt that the upward trend in CO2 emissions into the atmosphere since the beginning of industrialization is a key factor in changing the planet's climate over the past two centuries [1,2]
This review considers the works published mainly over the past 10 years on the catalytic hydrogenation of carbon dioxide to methane and C2+ hydrocarbons
An attempt is made to summarize the works published, mainly over the past 10 years, on the catalytic hydrogenation of СО2 to hydrocarbons. These studies, first of all, showed that unmodified carriers do not exhibit catalytic activity in the hydrogenation of CO2, which indicates the key role of the metals of the 8th group of the Periodic Table

Summary

Introduction

There is no doubt that the upward trend in CO2 emissions into the atmosphere since the beginning of industrialization is a key factor in changing the planet's climate over the past two centuries [1,2]. Zhou et al [65] prepared Ni-containing catalysts for CO2 methanation based on γ-Al2O3 and studied the effect of CeO2 introduced as an activator on the size, dispersion of nickel particles, their interaction with the substrate, and catalytic properties. Analysis of the literature data showed that to date, noticeable activity in the hydrogenation of carbon dioxide to C2+ hydrocarbons has been established mainly for iron-containing catalysts with an oxide base [85,86,87]. Analysis of the literature data showed that iron-containing oxide-based catalysts are active in the hydrogenation of carbon dioxide to obtain C2+ hydrocarbons. The activity of these catalysts increases markedly when they are promoted with alkali metals. The cost of CO2 capture needs to be considered when determining the economic viability of this technology

Conclusion

Findings

Heterogeneous catalysts for catalytic CO2