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Heterogeneous catalysis is a type of catalysis in which the catalyst occupies a different phase from the reactants and products. This may refer to the physical phase — solid, liquid or gas — but also to immiscible fluids. Heterogeneous catalysts can be more easily recycled than homogeneous, but characterization of the catalyst and optimization of properties can be more difficult.
A strategy for the precise and scalable synthesis of a series of M1M2 (where M is a metal ion) heteronuclear dual-atom catalysts (DACs) is proposed. Photoinduced electron accumulation at the M1 sites results in the capture and reduction of M2 cations close to the M1 sites to generate DACs with high purity.
For the methanol-to-hydrocarbons process, coke build can rapidly deactivate the zeolite catalyst. Here the authors show that the addition of liquid metal gallium can reduce coke deposition and increase catalyst lifetime.
Integrating heterogeneous single atom nanozyme (SAzyme) configurations and homogeneous enzyme-like mechanism is promising for optimizing SAzymes but elusive. Here the authors address this issue by developing a spatial engineering strategy to fabricate dual-sites SAzymes incorporating single atom Fe active centers (Fe–N4) and Cu atomic sites (Cu–N4) in a vertically stacked Fe–N4 and Cu–N4 geometry.
The selective reduction of α, β-unsaturated carbonyls remains a challenge. Here the authors report a zinc-based catalyst for this reaction, converting α, β-unsaturated carbonyl compounds into unsaturated alcohols followed by hydrodeoxygenation to form alkenes.
Carbon dioxide hydrogenation is an important industrial reaction. Here, the authors design a CeCuZn catalyst through a metal organic framework template for CO2 hydrogenation to methanol with excellent methanol yield and stability.
A modified zeolite nanoreactor with organosilanes boosts hydrogenation of aldehydes/ketones in water at ambient pressure. This method, promoting H2 and substrate mass transfer, achieves a 4.3-fold increase in reaction rate, offering a sustainable approach for organic synthesis under mild conditions.
A strategy for the precise and scalable synthesis of a series of M1M2 (where M is a metal ion) heteronuclear dual-atom catalysts (DACs) is proposed. Photoinduced electron accumulation at the M1 sites results in the capture and reduction of M2 cations close to the M1 sites to generate DACs with high purity.
The ab initio atomistic thermodynamics approach, coined by Reuter and Scheffler formally in 2001, remains pivotal for understanding and predicting the stable surfaces of thermal catalysts under technical conditions.