CO2 capture and in-situ conversion: recent progresses and perspectives

Green Chemical Engineering, Journal Year: 2021, Volume and Issue: 3(3), P. 189 - 198

Published: Dec. 7, 2021

Global warming caused by excess carbon dioxide (CO2) emission has been a focus of the world. The development neutral technologies becomes strategic choice for sustainable human society. Integrating CO2 capture and conversion (iCCC) technology can simultaneously convert captured from flue gas into value-added chemicals, which saves great energies expenses incurred in compression transportation processes conventional capture, utilization, storage (CCUS) technology. present review critically discusses dual-function materials (DFMs) iCCC at intermediate temperature methane production high syngas production. design reactor optimization operation conditions are emphasized perspective industrial applications. dual-fixed-bed reactors mode switching reactant gases, dual-fluidized-bed circulation DFMs particles comparatively reviewed. We hope this stimulate further studies including designing fabricating feasible DFMs, exploring realistic catalytic process to developing workable modes optimizing conditions, establishing demonstration real applications future.

Language: Английский

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Structure–Activity Relationships of Copper- and Potassium-Modified Iron Oxide Catalysts during Reverse Water–Gas Shift Reaction

ACS Catalysis, Journal Year: 2021, Volume and Issue: 11(20), P. 12609 - 12619

Published: Sept. 30, 2021

The reverse water–gas shift (RWGS) reaction is an initial and essential step for CO2 hydrogenation. In this study, Cu- K-modified iron oxide catalysts were investigated with a series of in/ex-situ characterization techniques, including in situ XRD, Raman, DRIFTS quasi XPS, HS-LEIS, H2-TPR, CO2-TPD, TPSR. surface structure the catalyst found to strongly depend on presence Cu K, leading diverse reducibility basicity. Adding K iron-based alters from redox pathway that proceeds sites associative basic sites. Metallic facilitates hydrogen dissociation promotes both mechanisms by either boosting vacancy or supplying abundant atoms. These findings would be beneficial rational design hydrogenation catalysts.

Language: Английский

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Photoredox Activation of Formate Salts: Hydrocarboxylation of Alkenes via Carboxyl Group Transfer

ACS Catalysis, Journal Year: 2021, Volume and Issue: 11(24), P. 15004 - 15012

Published: Dec. 1, 2021

A photoredox activation mode of formate salts for carboxylation was developed. Using a salt as the reductant, carbonyl source, and hydrogen atom transfer reagent, wide range alkenes can be converted into acid products via carboxyl group strategy in an additive-free fashion. Mechanistic studies revealed that radical anion species (CO2•– carbon anions derived from reduction alkenes) are key intermediates transformation. This method has advantages high catalytic efficiency simple system, which may allow this approach to become promising industrial applications.

Language: Английский

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A Short Review of Recent Advances in Direct CO2 Hydrogenation to Alcohols

Topics in Catalysis, Journal Year: 2021, Volume and Issue: 64(5-6), P. 371 - 394

Published: Jan. 1, 2021

Language: Английский

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Reticular frameworks and their derived materials for CO2 conversion by thermo−catalysis

EnergyChem, Journal Year: 2021, Volume and Issue: 3(6), P. 100064 - 100064

Published: Oct. 8, 2021

Language: Английский

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