ChemCatChem

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Modulation of the Effective Metal‐Support Interactions for the Selectivity of Ceria Supported Noble Metal Nanoclusters in Atmospheric CO2 Hydrogenation

Sustainable utilization of CO2 : The selectivity of atmospheric CO2 hydrogenation is tuned by the effective metal‐support interactions (MSI) between ceria nanowires and noble metal nanoclusters. Ceria supports donate electrons to Ru and Rh sites, while Pd and Pt nanoclusters transfer electrons to cerium ions, which are effective for elevated CH4 and...

Study on the Simple Surface Treatments of N, P Dual‐doped Carbon as Metal‐free Catalyst for Metal‐air Batteries

A better battery: Novel active sites generated by simple surface treatment can further improve the activity of oxygen reduction reaction by promoting the attack from semi‐free water molecules, which is applied to the preparation of metal‐free catalysts in metal‐air batteries. Abstract N, P dual‐doped porous carbon with high specific surface...

n‐Butyllithium Catalyzed Hydroboration of Nitriles and Carbodiimides

Hydroboration reactions made simple: We disclosed a new pathway to the reduction of nitriles with pinacolborane (HBpin) via using readily available alkali metal catalyst. The reaction proceeds with high yields under mild reaction conditions, with low catalyst loading and shows a broad applicability toward various nitriles. Additionally, it can be applied...

Arylative Allenol Cyclization via Sequential One‐pot Enzyme & Palladium Catalysis

Nanobiohybrid: Through a chemoenzymatic one‐pot approach merging halogenation biocatalysis with palladium‐mediated cross coupling, allenic alcohols are converted to densely substituted O‐heterocycles in an aqueous emulsified reaction medium. In addition to the modular synthetic methodology based on homogeneous catalysts, a tailor‐made enzyme‐metal nanobiohybrid...

Photoredox‐Catalyzed Multicomponent Cyclization of 2‐Vinyl Phenols, N‐Alkoxypyridinium Salts, and Sulfur Ylides for Synthesis of Dihydrobenzofurans

Multicomponent cyclization: The 2,3‐dihydrobenzofuran ring systems are a privileged class of oxygen heterocycles, and their synthesis continues to attract considerable effort. Herein, a visible‐light‐driven photoredox‐catalyzed radical multicomponent cyclization of 2‐vinyl phenols, N‐alkoxypyridinium salts, and sulfur ylides is described. The key to...

Bifunctional N‐Heterocylic Carbene‐Catalyzed Highly Enantioselective Trans‐Cyclopentannulation of Enals and Enones via Homoenolate

Asymmetric catalysis: New bifunctional chiral NHC catalysts were prepared and proved their efficiency to promote highly diastereoselective trans‐cyclopentannulation in moderate to good yields and excellent enantioselectivity. Abstract An efficient and flexible synthesis of a new class of chiral bifunctional NHC catalyst has been reported. These...

Porous Mo2C−MoP Heterostructure on Carbon Cloth for Efficient Hydrogen Evolution Reaction over a Broad pH Range

Catalytic cloth: Mo2C−MoP heterostructure was prepared by phosphating porous β‐Mo2C nanostructures, which shows excellent catalytic hydrogen evolution performance. DFT calculation showed more suitable Δ for Mo2C−MoP heterostructure than Mo2C and MoP. Abstract Heterogeneous structure composed of different active materials is an important strategy...

Understanding Support Effects of ZnO‐Promoted Co Catalysts for Syngas Conversion to Alcohols Using Atomic Layer Deposition

Co2C formation and reactivity is support sensitive. Co catalysts modified by ZnO atomic layer deposition show varied carbide formation, activity, and oxygenate selectivity in syngas reaction depending on the support. Using Al2O3 ALD and in situ XANES to probe the Al2O3‐supported catalyst system further, we observe a unique promoter‐support interaction...

The Known and Overlooked Sides of Zeolite‐Extrudate Catalysts

Zeolite‐based catalysts play the essential roles in the production of fuel and commodity chemicals for the modern society. In general, the main component of zeolites powder has to be transformed into particular shapes in order to match the overall imperatives properties for the industrial applications. Shaping of zeolites catalysts was once only considered...

Effect of Mesoporosity, Acidity and Crystal Size of Zeolite ZSM‐5 on Catalytic Performance during the Ex‐situ Catalytic Fast Pyrolysis of Biomass

The catalytic performance of a set of technical, zeolite ZSM‐5 extruded materials have been studied in a bench scale unit for the ex‐situ Catalytic Fast Pyrolysis (CFP) of lignocellulosic biomass. The set of catalysts include micro‐ and mesoporous materials, with and without ZrO 2 ‐promotion, with different Si/Al ratios and with micro‐ and nanosized...

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