Cobalt Catalysts Enable Selective Hydrogenation of CO₂ toward Diverse Products: Recent Progress and Perspective

Abstract

Selective hydrogenation of carbon dioxide (CO2) into value-added chemicals has aroused great interest. The chemical inertness of CO2 and diverse reaction pathways usually require the construction of enabled catalysts. To date, cobalt (Co) catalysts characteristic of metallic and/or divalent Co components show great potential for CO2 hydrogenation. To better regulate the CO2 hydrogenation, it is necessary to summarize the current progress of cobalt catalysts for selective hydrogenation of CO2. In this Perspective, first, hydrogenation of CO2 into methane over metallic Co sites is introduced. Second, hydrogenation of CO2 into methanol and C2+ alcohols is discussed by constructing mixed-valent cobalt sites. Third, hydrogenation of CO2 into light olefins and C5+ liquid fuels over cobalt-containing hybrid catalysts is introduced. Fourth, the reaction paths for selective hydrogenation of CO2 over cobalt catalysts are illustrated. Finally, the current challenges and prospects of cobalt-based nanocatalysts for hydrogenation of CO2 are proposed.

Isotype Heterojunction-Boosted CO2 Photoreduction to CO

“…The conversion of CO 2 into value-added fuels and feedstock is increasingly attractive due to the growing urgency to advance a sustainable carbon-neutral economy [1]. Lightdriven CRR over photocatalysts is one of the most promising conversion technologies since it can proceed under relatively mild conditions, which facilitates its resource utilization [2][3][4][5][6][7][8][9][10]. In the past decades, great progress has been made.…”

Surface morphology evolution of cobalt nanoparticles induced by hydrogen adsorption: a theoretical study

“…[18][19][20] Cobaltbased catalysts are widely used in hydrogen-involved heterogeneous reactions, such as Fischer-Tropsch synthesis, CO 2 hydrogenation to alcohols, and hydrogenation of C-N bonds. [21][22][23][24][25][26] In these reactions, the surface structure and morphology of the Co catalysts are certainly tuned by gas adsorption, but its influence is still unclear. 27,28 Herein, we employed DFT combined with ab initio atomistic thermodynamics and the Wulff theory 29 to investigate the adsorption behavior of hydrogen species on six HCP-Co surfaces from low to high coverage, and explored the effect of adsorption on the crystal morphologies.…”

Stabilizing Oxide Nanolayer via Interface Confinement and Surface Hydroxylation

“…Surface hydroxyl on oxide catalyst and support is a kind of almost unavoidable species due to its facile formation pathways such as hydrogen spillover and water dissociation in H 2 and H 2 O involved reactions. − It is considered to be an important reaction intermediate in many catalytic reactions such as water gas shift, − CO oxidation, ,− oxygen evolution reaction, − CO 2 hydrogenation, − etc. Understanding catalytic mechanisms involving hydroxyl is of great significance for improvement of the catalytic performance and rational design of advanced catalysts.…”