Palladium Membrane Applications in Hydrogen Energy and Hydrogen-Related Processes

Polymers, Journal Year: 2025, Volume and Issue: 17(6), P. 743 - 743

Published: March 12, 2025

In recent years, increased attention has been paid to environmental issues and, in connection with this, the development of hydrogen energy. turn, this requires large-scale production ultra pure hydrogen. Currently, most is obtained by converting natural gas and coal. regard, issue deep purification for use fuel cells very relevant. The also necessary some other areas, including microelectronics. Only palladium membranes can provide required degree purification. addition, membrane catalysis relevant widely demanded processes hydrogenation dehydrogenation, which reactors are used. This process successfully used single-stage high-purity Polymeric palladium-containing purify remove various pollutants from water, organochlorine products, nitrates, a number substances.

Language: Английский

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Photocatalytic water splitting versus H2 generation coupled with organic synthesis: A large critical review

CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION), Journal Year: 2025, Volume and Issue: 70, P. 44 - 114

Published: March 1, 2025

Language: Английский

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Photodehydrogenation of alcohols catalysed by a single ruthenium N-heterocyclic carbene complex

Journal of Catalysis, Journal Year: 2025, Volume and Issue: unknown, P. 116134 - 116134

Published: April 1, 2025

Language: Английский

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Double Catalytic Activity Unveiled: Synthesis, Characterization, and Catalytic Applications of Iridium Complexes in Transfer Hydrogenation and Photomediated Transformations

ACS Catalysis, Journal Year: 2024, Volume and Issue: 14(9), P. 6413 - 6422

Published: April 11, 2024

Iridium complexes have been demonstrated to be highly active catalysts for a wide variety of transformations. Their unique photophysical and photochemical properties render them as one the most established photocatalysts. Moreover, iridium are widely acknowledged their efficiency in transfer hydrogenation reactions. However, development able promote both traditional organometallic catalysis photocatalysis is scarce. Thus, design iridium-based still an area research. In this context, we targeted synthesis family Ir-Cp* systems explore (photo)catalytic applications. Here, describe synthesis, structural characterization, formula [IrCp*Cl(N^O)]. These applied with double catalytic function, carbonyl reduction different photomediated

Language: Английский

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Advances in Liquid Organic Hydrogen Carriers: Developing Efficient Dehydrogenation Strategies

Chemical Communications, Journal Year: 2024, Volume and Issue: 60(63), P. 8186 - 8203

Published: Jan. 1, 2024

In pursuit of global carbon neutrality, countries are intensifying their efforts to harness clean energy sources. Hydrogen emerges as a superior alternative traditional fossil fuels and plays crucial role in the shift. Liquid Organic Carrier (LOHC) systems lauded for high hydrogen storage capacity, ease handling, safe efficient transportation, positioning them effective solutions extensive international distribution. Nevertheless, dehydrogenation hydrogen-rich LOHCs is slow, requiring temperatures substantial inputs. Addressing these challenges by reducing demands improving rates essential advancing LOHC technology. This paper comprehensively examines various systems, focusing on selection carriers catalysts, efficacy. It also highlights our recent contributions photocatalytic outlines future research directions enhance

Language: Английский

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Visible-light-driven SAQS-catalyzed aerobic oxidative dehydrogenation of alkyl 2-phenylhydrazinecarboxylates

RSC Advances, Journal Year: 2022, Volume and Issue: 12(47), P. 30304 - 30309

Published: Jan. 1, 2022

Azo compounds are useful molecules with a wide range of applications in organic chemistry. Here, novel visible-light-driven oxidative dehydrogenation alkyl 2-phenylhydrazinecarboxylates is used for the synthesis azo compounds. This synthetic method was conducted under an aerobic environment mild reaction conditions. Sodium anthraquinone sulfonate (SAQS) employed as crucial photocatalyst to generate various high yields. In addition, transformation hydrazobenzenes azobenzenes using visible light successfully carried out SAQS-mediated procedure practical and promising approach produce

Language: Английский

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Aromatization of cyclic hydrocarbons via thioether elimination reaction

Chemical Communications, Journal Year: 2023, Volume and Issue: 59(75), P. 11232 - 11235

Published: Jan. 1, 2023

Herein, the diversity-oriented aromatization of cyclic hydrocarbons via potassium ethyl xanthogenate (EtOCS2K)/NH4I-mediated methylthiyl radical addition and thioether elimination was investigated under transition-metal-free conditions. The species were generated in situ NH4I-mediated decomposition DMSO following which EtOCS2K promoted breaking carbon-sulfur bonds thioether.

Language: Английский

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Impact of Bidentate Pyridyl-Mesoionic Carbene Ligands: Structural, (Spectro)Electrochemical, Photophysical, and Theoretical Investigations on Ruthenium(II) Complexes

ACS Organic & Inorganic Au, Journal Year: 2023, Volume and Issue: 3(4), P. 184 - 198

Published: May 3, 2023

We present here new synthetic strategies for the isolation of a series Ru(II) complexes with pyridyl-mesoionic carbene ligands (MIC) 1,2,3-triazole-5-ylidene type, in which bpy (bpy = 2,2'-bipyridine) archetypical [Ru(bpy)3]2+ have been successively replaced by one, two, or three pyridyl-MIC ligands. Three isolated and investigated via NMR spectroscopy single-crystal X-ray diffraction analysis. The incorporation one MIC unit shifts potential metal-centered oxidation about 160 mV to more cathodic cyclic voltammetry, demonstrating extraordinary σ-donor ability ligand, while π-acceptor capacities are dominated as indicated electron paramagnetic resonance spectroelectrochemistry (EPR-SEC). replacement all ligand results an anoidic shift ligand-centered reduction 390 compared well-established complex. In addition, UV/vis/NIR-SEC combination theoretical calculations provided detailed insights into electronic structures respective redox states, taking account total number incorporated complexes. luminescence quantum yield lifetimes were determined time-resolved absorption emission spectroscopy. An estimation excited state potentials conclusively showed that can tune photoredox activity stronger photoreductants. These observations provide design photocatalysts photosensitizers based on MICs.

Language: Английский

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Photostable and high-brightness aggregation-induced emission of iridium luminogen achieving reliable and sensitive continuous luminescent quantification of molecular oxygen

Talanta, Journal Year: 2023, Volume and Issue: 266, P. 125059 - 125059

Published: Aug. 9, 2023

Language: Английский

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Boosting charge separation in conjugated microporous polymers via fluorination for enhancing photocatalysis

Catalysis Science & Technology, Journal Year: 2022, Volume and Issue: 12(19), P. 5942 - 5951

Published: Jan. 1, 2022

Conjugated microporous polymers (CMPs) have emerged as prospective heterogeneous photocatalysts for photocatalytic aerobic oxidation due to their ease of functionalization, high surface area and porosity, tunable band gap.

Language: Английский

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