Well-Defined Materials for Heterogeneous Catalysis: From Nanoparticles to Isolated Single-Atom Sites

Chemical Reviews, Journal Year: 2019, Volume and Issue: 120(2), P. 623 - 682

Published: Dec. 23, 2019

The use of well-defined materials in heterogeneous catalysis will open up numerous new opportunities for the development advanced catalysts to address global challenges energy and environment. This review surveys roles nanoparticles isolated single atom sites catalytic reactions. In second section, effects size, shape, metal-support interactions are discussed nanostructured catalysts. Case studies summarized illustrate dynamics structure evolution under certain reaction conditions. third we syntheses applications atomic anchored on different types supports. final part, conclude by highlighting catalyst gaining a fundamental understanding their active sites.

Language: Английский

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Porous Aromatic Frameworks (PAFs)

Chemical Reviews, Journal Year: 2020, Volume and Issue: 120(16), P. 8934 - 8986

Published: Feb. 26, 2020

Porous aromatic frameworks (PAFs) represent an important category of porous solids. PAFs possess rigid and exceptionally high surface areas, and, uniquely, they are constructed from carbon-carbon-bond-linked aromatic-based building units. Various functionalities can either originate the intrinsic chemistry their units or achieved by postmodification motifs using established reactions. Specially, strong carbon-carbon bonding renders stable under harsh chemical treatments. Therefore, exhibit specificity in compared with conventional materials such as zeolites metal organic frameworks. The unique features render them being tolerant severe environments readily functionalized research field has experienced rapid expansion over past decade, it is necessary to provide a comprehensive guide essential development at this stage. Regarding into PAFs, synthesis, functionalization, applications three most topics. In thematic review, topics comprehensively explained aptly exemplified shed light on developments field. Current questions perspective outlook will be summarized.

Language: Английский

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Metal–Covalent Organic Frameworks (MCOFs): A Bridge Between Metal–Organic Frameworks and Covalent Organic Frameworks

Angewandte Chemie International Edition, Journal Year: 2020, Volume and Issue: 59(33), P. 13722 - 13733

Published: April 9, 2020

Abstract Many sophisticated chemical and physical properties of porous materials strongly rely on the presence metal ions within structures. Whereas homogeneous distribution metals is conveniently realized in metal–organic frameworks (MOFs), limited stability potentially restricts their practical implementation. From that perspective, development metal–covalent organic (MCOFs) may address these shortcomings by incorporating active species atop highly stable COF backbones. This Minireview highlights examples MCOFs tackle important issues from design, synthesis, characterization to cutting‐edge applications.

Language: Английский

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Metal Sites in Zeolites: Synthesis, Characterization, and Catalysis

Chemical Reviews, Journal Year: 2022, Volume and Issue: 123(9), P. 6039 - 6106

Published: Sept. 1, 2022

Zeolites with ordered microporous systems, distinct framework topologies, good spatial nanoconfinement effects, and superior (hydro)thermal stability are an ideal scaffold for planting diverse active metal species, including single sites, clusters, nanoparticles in the framework-associated sites extra-framework positions, thus affording metal-in-zeolite catalysts outstanding activity, unique shape selectivity, enhanced recyclability processes of Brønsted acid-, Lewis metal-catalyzed reactions. Especially, thanks to advances zeolite synthesis characterization techniques recent years, zeolite-confined (denoted as metal@zeolite composites) have experienced rapid development heterogeneous catalysis, owing combination merits both intrinsic properties. In this review, we will present developments strategies incorporating tailoring zeolites advanced identification location, distribution, coordination environment species zeolites. Furthermore, catalytic applications demonstrated, emphasis on composites hydrogenation, dehydrogenation, oxidation Finally, point out current challenges future perspectives precise synthesis, atomic level identification, practical application catalyst system.

Language: Английский

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Kinetic stability of metal–organic frameworks for corrosive and coordinating gas capture

Nature Reviews Materials, Journal Year: 2019, Volume and Issue: 4(11), P. 708 - 725

Published: Sept. 13, 2019

Language: Английский

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Recent Progress in Methanol‐to‐Olefins (MTO) Catalysts

Advanced Materials, Journal Year: 2019, Volume and Issue: 31(50)

Published: Sept. 9, 2019

Abstract Methanol conversion to olefins, as an important reaction in C1 chemistry, provides alternative platform for producing basic chemicals from nonpetroleum resources such natural gas and coal. Methanol‐to‐olefin (MTO) catalysis is one of the critical constraints process development, determining reactor design, profitability process. After construction commissioning world's first MTO plant by Dalian Institute Chemical Physics, based on high‐efficiency catalyst fluidization technology 2010, more attention has been attracted a deep understanding mechanism principle, which led continuous development catalysts processes. Herein, recent progress summarized, focusing advances optimization SAPO‐34 catalysts, together with efforts preferential ethylene or propylene selectivity.

Language: Английский

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Greenificated Molecularly Imprinted Materials for Advanced Applications

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(42)

Published: June 23, 2022

Abstract Molecular imprinting technology (MIT) produces artificial binding sites with precise complementarity to substrates and thereby is capable of exquisite molecular recognition. Over five decades evolution, it predicted that the resulting host imprinted materials will overtake natural receptors for research application purposes, but in practice, this has not yet been realized due unsustainability their life cycles (i.e., precursors, creation, use, recycling, end‐of‐life). To address issue, greenificated molecularly polymers (GMIPs) are a new class plastic antibodies have approached sustainability by following one or more greenification principles, while also demonstrating far‐reaching applications compared counterparts. In review, most recent developments delicate design advanced GMIPs six fast‐growing emerging fields surveyed, namely biomedicine/therapy, catalysis, energy harvesting/storage, nanoparticle detection, gas sensing/adsorption, environmental remediation. addition, distinct features highlighted, optimal means utilize these attaining incredibly discussed. Importantly, obscure technical challenges MIT revealed, conceivable solutions offered. Lastly, several perspectives on future directions proposed.

Language: Английский

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Microporous framework membranes for precise molecule/ion separations

Chemical Society Reviews, Journal Year: 2020, Volume and Issue: 50(2), P. 986 - 1029

Published: Nov. 23, 2020

Microporous framework membranes with well-defined micropore structure such as metal-organic and covalent organic hold great promise for the enormous challenging separations in energy environment fields.

Language: Английский

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Organic molecular sieve membranes for chemical separations

Chemical Society Reviews, Journal Year: 2021, Volume and Issue: 50(9), P. 5468 - 5516

Published: Jan. 1, 2021

This review proposes the concept of organic molecular sieve membranes (OMSMs) and guiding principles for precise structure construction efficient process intensification OMSMs.

Language: Английский

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Applications of Zeolites to C1 Chemistry: Recent Advances, Challenges, and Opportunities

Advanced Materials, Journal Year: 2020, Volume and Issue: 32(44)

Published: July 22, 2020

Abstract C1 chemistry, which is the catalytic transformation of molecules including CO, CO 2 , CH 4 3 OH, and HCOOH, plays an important role in providing energy chemical supplies while meeting environmental requirements. Zeolites are highly efficient solid catalysts used industry. The design development zeolite‐based mono‐, bi‐, multifunctional has led to a booming application chemistry. Combining advantages zeolites metallic species promoted production various hydrocarbons (e.g., methane, light olefins, aromatics, liquid fuels) oxygenates methanol, dimethyl ether, formic acid, higher alcohols) from molecules. key zeolite descriptors that influence performance, such as framework topologies, nanoconfinement effects, Brønsted acidities, secondary‐pore systems, particle sizes, extraframework cations atoms, hydrophobicity hydrophilicity, proximity between acid sites discussed provide deep understanding significance An outlook regarding challenges opportunities for conversion resources using meet emerging demands also presented.

Language: Английский

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