Photothermal catalytic dry reforming of methane over Ce‐promoted Ni/NiO heterostructure

AIChE Journal, Год журнала: 2025, Номер unknown

Опубликована: Фев. 13, 2025

Abstract Photothermal catalytic dry reforming of methane (DRM) provides a sustainable carbon conversion route, but the syngas production rates remain unsatisfactory under low‐temperature conditions. This study reported layered double hydroxide‐derived Ni–NiO heterojunction catalyst with optimized electronic environments via Ce doping. The Ce‐doped exhibited excellent photothermal DRM performance, H 2 and CO 93.90 114.25 mmol g −1 min , respectively, superior 12‐h stability. Mechanistic studies revealed that activated CH 4 to form x * O* species, while doping promoted coupling these intermediates 3 O*, enhancing generation. strategy effectively bonded intermediate species generated from reactants, thereby into syngas.

Язык: Английский

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Microwave-responsive nanoencapsulated fluorescence thermometers for quantitative assessment of microscale localized heat regulation in chemical production

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 160819 - 160819

Опубликована: Фев. 1, 2025

Язык: Английский

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Wireless Thermochromic Platform Based on Au/SiO₂ Photonic Crystals for Operando Monitoring of Catalyst Sintering with Machine Learning

ACS Nano, Год журнала: 2025, Номер unknown

Опубликована: Фев. 10, 2025

Operando monitoring of the catalyst sinter-degree during reactions is essential for achieving a stable, safe, and efficient chemical engineering process. This work introduces wireless thermochromic platform that utilizes machine learning to correlate color changes with catalysts identify hot spots reactions. After being decorated sub-2 nm Au clusters, SiO2 photonic crystals were endowed distinct change from inherent blue hue distinctive red shade associated due gradual growth clusters over wide temperature range 25 900 °C. With assistance an artificial neural network, robust correlation was established between observed species. training, smart Au/SiO2 achieved self-visualization species within 12.4 μm × μm, CO oxidation. Moreover, intelligent noninvasive can be constructed by patterning into quick response codes, real-time distribution at micro-region scale (208 208 μm) 5 ms The enables data transmission facilitates programmable warning abnormal in reactors. serves as technical reserve future research on development advanced offers further insight

Язык: Английский

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Solar-Driven Methane Coupling to Ethane over Layered Double Hydroxide-Based Heterojunction Photothermal Catalysts

Industrial & Engineering Chemistry Research, Год журнала: 2025, Номер unknown

Опубликована: Фев. 24, 2025

Язык: Английский

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Bilateral Causality Effects Between Product Distribution and Reaction Exotherm in the Conversion of Syngas

ACS Catalysis, Год журнала: 2025, Номер unknown, С. 6248 - 6254

Опубликована: Апрель 3, 2025

Язык: Английский

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Breaking the Activity-and-Selectivity Seesaw while Enhancing Heat Management via the Lattice Effect of a Single-Atom Alloy

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Апрель 25, 2025

When single-atom catalysts are oriented toward practical applications, in addition to balancing the seesaw between activity and selectivity, capability of thermal management also merits attention. Herein, we proposed a facility approach that, based on active Pd state single atom, tunes guest Cu size simultaneously enhance effect d-electron domination heat transfer behavior microregions. Along with an order magnitude increase, more delocalized electrons were generated transferred isolated sites, d band center shifting from 1.438 1.052 eV, closer Fermi level. Simultaneously, long-range ordered lattices much favorable for transferring situ thermally phonons diffusivity surging 12.36 103.49 mm2/s. The optimized Pd1Cu-SAA catalyst exhibited state-of-the-art performance acetylene hydrogenation, achieving full conversion at 140 °C, 95.3% selectivity good stability test period.

Язык: Английский

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The effect of Cu at the Pd1-Al2O3 interface on acetylene selective hydrogenation: a DFT combined with a micro-kinetic modeling study

Surfaces and Interfaces, Год журнала: 2025, Номер unknown, С. 106677 - 106677

Опубликована: Май 1, 2025

Язык: Английский

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Selective Semi‐Hydrogenation of Acetylene using a Single‐Atom Cobalt on Carbon Nitride Photocatalyst with Water as a Proton Source

Small Methods, Год журнала: 2025, Номер unknown

Опубликована: Май 19, 2025

Abstract Light‐powered strategies for the semi‐hydrogenation of acetylene to ethylene are rapidly emerging as sustainable alternatives traditional thermochemical processes. The development a robust, selective, well recyclable, non‐noble catalyst that can be powered by visible light and uses water proton source accomplish this important reaction remains key challenge. Here first demonstration cobalt single‐atom supported on carbon‐nitride (Co−CN) an all‐in‐one photocatalyst is reported using source, offering advantages over current hydrogenation technologies. Carbon nitride hosts individual catalytic active sites thus combining photosensitizer cocatalyst in one unit, line with first‐principles modelling. Under irradiation, Co−CN reduces stable activity 40 days continuous operation, ≥99.9% selectivity, provides means coupling organic upgrading produce valuable oxidation products. heterogeneous easily recovered reused repeatedly without loss structural integrity. Thereby, integrated recyclable platform overcomes need separate catalyst, noble metal catalysts external H 2 gas feed.

Язык: Английский

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Strong Heterostructure Coupling-Confinement Effect Inducing Dispersion of Cu-Based Catalysts for Photocatalytic Hydrogen Evolution

Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер unknown, С. 124857 - 124857

Опубликована: Ноя. 1, 2024

Язык: Английский

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