Zeolites in Adsorption Processes: State of the Art and Future Prospects

Chemical Reviews, Journal Year: 2022, Volume and Issue: 122(24), P. 17647 - 17695

Published: Oct. 19, 2022

Zeolites have been widely used as catalysts, ion exchangers, and adsorbents since their industrial breakthrough in the 1950s continue to be state-of the-art many separation processes. Furthermore, properties make them materials of choice for developing emerging applications. The aim this review is put into context relevance zeolites use prospects adsorption technology. It has divided three different sections, i.e., zeolites, on nanoporous materials, chemical separations by zeolites. In first section, are explained terms structure, composition, preparation, properties, a brief applications given. second fundamentals science presented, with special attention its application our case interest, which Finally, state-of-the-art relevant related energy production, practical or potential applicability, presented. replacement some current methods optimized processes using could mean an improvement sustainability savings. Different mechanisms underlying that interesting these discussed.

Language: Английский

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Direct air capture: process technology, techno-economic and socio-political challenges

Energy & Environmental Science, Journal Year: 2022, Volume and Issue: 15(4), P. 1360 - 1405

Published: Jan. 1, 2022

This comprehensive review appraises the state-of-the-art in direct air capture materials, processes, economics, sustainability, and policy, to inform, challenge inspire a broad audience of researchers, practitioners, policymakers.

Language: Английский

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Descriptors for the Evaluation of Electrocatalytic Reactions: d‐Band Theory and Beyond

Advanced Functional Materials, Journal Year: 2021, Volume and Issue: 32(4)

Published: Oct. 13, 2021

Abstract Closing the carbon‐, hydrogen‐, and nitrogen cycle with renewable electricity holds promises for mitigation of facing environment energy crisis, along continuing prosperity human society. Descriptors bridge gap between physicochemical factors electrocatalysts their boosted activity serve as guiding principles during rational design electrocatalysts. The optimal adsorption strength key intermediates is potentially accessed under tendentious guidelines proposed by indicators, such d‐band center, Δ G H , E O* coordination number (CN), bond length, etc. Here, in this review, a comprehensive summary recent advances achieved regarding descriptors that aims recycling C/H/N‐containing chemicals offered. review initiated providing necessity development efficient then physics behind center introduced. Then progress relating to guidance reviewed. Following that, an extended discussion experimental or theoretical characterization beyond it provided. Finally, perspectives challenges area are

Language: Английский

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CO₂ Capture at Medium to High Temperature Using Solid Oxide-Based Sorbents: Fundamental Aspects, Mechanistic Insights, and Recent Advances

Chemical Reviews, Journal Year: 2021, Volume and Issue: 121(20), P. 12681 - 12745

Published: Aug. 5, 2021

Carbon dioxide capture and mitigation form a key part of the technological response to combat climate change reduce CO2 emissions. Solid materials capable reversibly absorbing have been focus intense research for past two decades, with promising stability low energy costs implement operate compared more widely used liquid amines. In this review, we explore fundamental aspects underpinning solid sorbents based on alkali alkaline earth metal oxides operating at medium high temperature: how their structure, chemical composition, morphology impact performance long-term use. Various optimization strategies are outlined improve upon most materials, combine recent advances across disparate scientific disciplines, including discovery, synthesis, in situ characterization, present coherent understanding mechanisms absorption both surfaces within materials.

Language: Английский

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S-scheme heterojunction photocatalysts for CO2 reduction

Matter, Journal Year: 2022, Volume and Issue: 5(12), P. 4187 - 4211

Published: Dec. 1, 2022

Language: Английский

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Towards the development of the emerging process of CO₂heterogenous hydrogenation into high-value unsaturated heavy hydrocarbons

Chemical Society Reviews, Journal Year: 2021, Volume and Issue: 50(19), P. 10764 - 10805

Published: Jan. 1, 2021

This review covers recent developments in the synthesis of α-olefins and aromatics from CO 2 hydrogenation via direct indirect routes.

Language: Английский

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Recent advances in integrated CO₂capture and utilization: a review

Sustainable Energy & Fuels, Journal Year: 2021, Volume and Issue: 5(18), P. 4546 - 4559

Published: Jan. 1, 2021

In this review, we summarize the recent progress of dual functional materials application in integrated CO 2 capture and utilization discuss superiority process from perspective industrial applications.

Language: Английский

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Accessing Organonitrogen Compounds via C–N Coupling in Electrocatalytic CO₂ Reduction

Journal of the American Chemical Society, Journal Year: 2021, Volume and Issue: 143(47), P. 19630 - 19642

Published: Nov. 17, 2021

Given the limited product variety of electrocatalytic CO2 reduction reactions solely from and H2O as reactants, it is desirable to expand scope by introducing additional reactants that provide elemental diversity. The integration inorganic heteroatom-containing into could, in principle, enable sustainable synthesis valuable products, such organonitrogen compounds, which have widespread applications but typically rely on NH3 derived energy-intensive fossil-fuel-dependent Haber–Bosch process for their industrial-scale production. In this Perspective, research progress toward building C–N bonds N-integrated highlighted, electrosyntheses urea, acetamides, amines are examined standpoints reactivity, catalyst structure, and, most fundamentally, mechanism. Mechanistic discussions coupling these advances emphasized critically evaluated, with aim directing future investigations improving yield broadening reduction.

Language: Английский

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Electrochemical Reduction of CO₂ to CO over Transition Metal/N‐Doped Carbon Catalysts: The Active Sites and Reaction Mechanism

Advanced Science, Journal Year: 2021, Volume and Issue: 8(24)

Published: Oct. 31, 2021

Abstract Electrochemical CO 2 reduction to value‐added chemicals/fuels provides a promising way mitigate emission and alleviate energy shortage. ‐to‐CO conversion involves only two‐electron/proton transfer thus is kinetically fast. Among the various developed electrocatalysts, transition metal/N‐doped carbon (M‐N‐C) catalysts are attractive due their low cost high activity. In this work, recent progress on development of M‐N‐C for electrochemical reviewed in detail. The regulation active sites related adjustable electrocatalytic performance discussed. A visual comparison reaction (CO RR) reported over years given, which suggests that Ni Fe‐N‐C most candidates large‐scale produce CO. Finally, outlooks challenges proposed future research conversion.

Language: Английский

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Engineering Catalytic Interfaces in Cu^δ+/CeO₂-TiO₂ Photocatalysts for Synergistically Boosting CO₂ Reduction to Ethylene

ACS Nano, Journal Year: 2022, Volume and Issue: 16(2), P. 2306 - 2318

Published: Feb. 9, 2022

Photocatalytic CO2 conversion into a high-value-added C2 product is highly challenging task because of insufficient electron deliverability and sluggish C-C coupling kinetics. Engineering catalytic interfaces in photocatalysts provides promising approach to manipulate photoinduced charge carriers create multiple sites for boosting the generation from reduction. Herein, Cuδ+/CeO2-TiO2 photocatalyst that contains atomically dispersed Cuδ+ anchored on CeO2-TiO2 heterostructures consisting CeO2 nanoparticles porous TiO2 designedly constructed by pyrolytic transformation Cu2+-Ce3+/MIL-125-NH2 precursor. In designed photocatalyst, acts as light-harvesting material generating electron-hole pairs are efficiently separated interfaces, Cu-Ce dual active synergistically facilitate dimerization *CO intermediates, thus lowering energy barrier coupling. As consequence, exhibits production rate 4.51 μmol-1·gcat-1·h-1 73.9% selectivity terms utilization C2H4 under simulated sunlight, with H2O hydrogen source hole scavenger. The photocatalytic mechanism revealed operando spectroscopic methods well theoretical calculations. This study displays rational construction heterogeneous emphasizes synergistic effect enhancing product.

Language: Английский

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