Electrocatalytic reduction of CO2 to ethylene and ethanol through hydrogen-assisted C–C coupling over fluorine-modified copper

Nature Catalysis, Journal Year: 2020, Volume and Issue: 3(6), P. 478 - 487

Published: April 20, 2020

Language: Английский

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Industrial carbon dioxide capture and utilization: state of the art and future challenges

Chemical Society Reviews, Journal Year: 2020, Volume and Issue: 49(23), P. 8584 - 8686

Published: Jan. 1, 2020

This review covers the sustainable development of advanced improvements in CO₂capture and utilization.

Language: Английский

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Surface and Interface Control in Nanoparticle Catalysis

Chemical Reviews, Journal Year: 2019, Volume and Issue: 120(2), P. 1184 - 1249

Published: Oct. 3, 2019

The surface and interfaces of heterogeneous catalysts are essential to their performance as they often considered be active sites for catalytic reactions. With the development nanoscience, ability tune interface nanostructures has provided a versatile tool optimization catalyst. In this Review, we present control nanoparticle in context oxygen reduction reaction (ORR), electrochemical CO2 (CO2 RR), tandem catalysis three sections. first section, start with activity ORR on nanoscale then focus approaches optimize Pt-based catalyst including using alloying, core-shell structure, high area open structures. section RR, where composition plays dominant role, cover its fundamentals different nanosized metal catalysts. For catalysis, adjacent single nanostructure catalyze sequential reactions, describe concept principle, synthesis methodology, application

Language: Английский

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Core–shell structured catalysts for thermocatalytic, photocatalytic, and electrocatalytic conversion of CO₂

Chemical Society Reviews, Journal Year: 2020, Volume and Issue: 49(10), P. 2937 - 3004

Published: Jan. 1, 2020

Catalytic conversion of CO2 to produce fuels and chemicals is attractive in prospect because it provides an alternative fossil feedstocks the benefit converting cycling greenhouse gas on a large scale. In today's technology, converted into hydrocarbon Fischer-Tropsch synthesis via water shift reaction, but processes for direct such as methane, methanol, C2+ hydrocarbons or syngas are still far from large-scale applications processing challenges that may be best addressed by discovery improved catalysts-those with enhanced activity, selectivity, stability. Core-shell structured catalysts relatively new class nanomaterials allow controlled integration functions complementary materials optimised compositions morphologies. For conversion, core-shell can provide distinctive advantages addressing catalyst sintering activity loss reforming processes, insufficient product selectivity thermocatalytic hydrogenation, low efficiency photocatalytic electrocatalytic hydrogenation. preceding decade, substantial progress has been made synthesis, characterization, evaluation potential applications. Nonetheless, remain inexpensive, robust, regenerable this class. This review in-depth assessment these thermocatalytic, photocatalytic, valuable hydrocarbons.

Language: Английский

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Insights into the Influence of CeO₂Crystal Facet on CO₂Hydrogenation to Methanol over Pd/CeO₂Catalysts

ACS Catalysis, Journal Year: 2020, Volume and Issue: 10(19), P. 11493 - 11509

Published: Sept. 10, 2020

CeO2 is an excellent potential material for CO2 hydrogenation attributed to the highly tunable properties including metal–support interaction and abundant oxygen vacancy. In this work, four supports with structurally well-defined different shapes crystal facets are hydrothermally prepared, their effects on composition of Pd species vacancy over Pd/CeO2 catalysts have been intensively investigated in reduction methanol. The 2Pd/CeO2-R (rods) shows highest concentration number vacancies, where (110) facet high surface mobility low formation energy exposed CeO2-R surface. at interface (111) (100) mainly observed 2Pd/CeO2-P (polyhedrons) higher than single 2Pd/CeO2-O (octahedrons) 2Pd/CeO2-C (cubs), respectively. presence promotes vacancies by providing dissociated H atoms facilitate removal O ceria support under a H2 atmosphere. Both PdxCe1–xOδ solid solution dominated PdO CeO2-O reduced metallic after 6–10 nm average particle size. As revealed density functional theory (DFT) calculations, contrast Pd0 atom thermodynamically most unstable PdxCe1−xOδ solution, nanoparticles stable realistic reaction conditions. catalytic activity as abundantly available function adsorption activation sites. Moreover, reactivity correlated its energy. lower facilitates vacancy; however, each TOFoxygen 15 times that 2Pd/CeO2-R. Thus, suitable likely favorable enhancing reactivity. DFT calculations indicate CH3OH probably from formate (HCOO*) pathway via C–O bond cleavage H2COOH*, HCOO* HCOOH* rate-limiting step. These results would provide experimental theoretical insights into rational design effective catalyst hydrogenation.

Language: Английский

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Electrocatalytic reduction of CO₂ and CO to multi-carbon compounds over Cu-based catalysts

Chemical Society Reviews, Journal Year: 2021, Volume and Issue: 50(23), P. 12897 - 12914

Published: Jan. 1, 2021

This tutorial review discusses the similarities and differences between electrocatalytic reduction of CO 2 to C 2+ olefins oxygenates over Cu-based catalysts.

Language: Английский

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Green Carbon Science: Efficient Carbon Resource Processing, Utilization, and Recycling towards Carbon Neutrality

Angewandte Chemie International Edition, Journal Year: 2021, Volume and Issue: 61(15)

Published: Dec. 17, 2021

Green carbon science is defined as the "study and optimization of transformation carbon-containing compounds relevant processes involved in entire cycle from resource processing, energy utilization, CO2 fixation, recycling to utilize resources efficiently minimize net emission."[1] related closely neutrality, fields have developed quickly last decade. In this Minireview, we propose concept index, recent progress petroleum refining, production liquid fuels, chemicals, materials using coal, methane, , biomass, waste plastics highlighted combination with green science. An outlook for these important provided final section.

Language: Английский

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A hydrophobic FeMn@Si catalyst increases olefins from syngas by suppressing C1 by-products

Science, Journal Year: 2021, Volume and Issue: 371(6529), P. 610 - 613

Published: Feb. 4, 2021

Although considerable efforts have been made in the selective conversion of syngas [carbon monoxide (CO) and hydrogen] to olefins through Fischer-Tropsch synthesis (FTS), ~50% converted CO is transformed into undesired one-carbon molecule (C1) by-products dioxide (CO2) methane (CH4)]. In this study, a core-shell FeMn@Si catalyst with excellent hydrophobicity was designed hinder formation CO2 CH4 The hydrophobic shell protected iron carbide core from oxidation by water generated during FTS shortened retention on surface, restraining side reactions related water. Furthermore, electron transfer manganese atoms boosted olefin production inhibited formation. multifunctional could suppress total selectivity less than 22.5% an yield up 36.6% at 56.1%.

Language: Английский

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Highly Active ZnO-ZrO₂ Aerogels Integrated with H-ZSM-5 for Aromatics Synthesis from Carbon Dioxide

ACS Catalysis, Journal Year: 2019, Volume and Issue: 10(1), P. 302 - 310

Published: Nov. 25, 2019

Bifunctional catalysis coupling CO2 to methanol and hydrocarbons is a promising strategy for the direct hydrogenation of into high-value chemicals. However, bifunctional catalysts suffer from low productivity due inertness high activation energy C–C coupling. Herein, we report highly active catalyst consisting ZnO-ZrO2 aerogel zeolite H-ZSM-5 aromatics with 76% selectivity at single-pass conversion 16%. The CH4 lower than 1% same time. space–time yield aromatic as 0.24 g goxide–1 h–1 under reaction conditions 340 °C 40 bar over ae-ZnO-ZrO2/H-ZSM-5 catalyst, which outperforms previously reported catalysts, including modified Fischer–Tropsch catalysts. We demonstrate that prepared by combined sol–gel subsequent supercritical drying method, not only possesses surface area but also provides large amounts oxygen vacancies. formation rate intermediate dominated total amount Moreover, stable performance industrially relevant suggests prospects industrial applications.

Language: Английский

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Towards the Circular Economy: Converting Aromatic Plastic Waste Back to Arenes over a Ru/Nb₂O₅ Catalyst

Angewandte Chemie International Edition, Journal Year: 2020, Volume and Issue: 60(10), P. 5527 - 5535

Published: Dec. 3, 2020

Abstract The upgrading of plastic waste is one the grand challenges for 21 st century owing to its disruptive impact on environment. Here, we show first example various aromatic wastes with C−O and/or C−C linkages arenes (75–85 % yield) via catalytic hydrogenolysis over a Ru/Nb 2 O 5 catalyst. This catalyst not only allows selective conversion single‐component plastic, and more importantly, enables simultaneous mixture arenes. excellent performance attributed unique features including: (1) small sized Ru clusters Nb , which prevent adsorption ring hydrogenation; (2) strong oxygen affinity NbO x species bond activation Brønsted acid sites activation. study offers path integrate back into supply chain production under context circular economy.

Language: Английский

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