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The interfacial interaction between the γ‐Al2O3 and the LSCF enhances ethane adsorption and selective conversion to ethylene by modifying the electronic structure of Fe center at the Al‐O‐Fe interface and decreasing surface adsorbed oxygen species. Abstract. Oxidative dehydrogenation of ethane (ODE) is limited by the facile deep oxidation and potential safety hazards.
Functionalized aluminium alkyls enable an effective coordinative chain transfer polymerization with selective chain initiation by the functionalized alkyl. (ω‐aminoalkyl)diisobutyl aluminum reagents (twelve examples studied) obtained by hydroalumination of α‐amino‐ω‐enes with diisobutyl aluminum hydride promote the stereoselective catalytic chain growth of butadiene on aluminum in presence of Nd(versatate)3, Cp*2Nd(allyl) or Cp*2Gd(allyl) precatalysts and [PhNMe2H+]/[B(C6F5)4‐]. Carbazolyl‐ and indolyl‐ aluminum reagents result in efficient molecular weight control and chain initiation by the aminoalkyl rather than isobutyl substitutent bound to aluminum. As evidenced for (3‐(9H‐carbazol‐9‐yl)propyl) initiated polybutadiene (PBD) inter alia.
Bridging homogeneous molecular systems with heterogeneous catalysts is a promising approach for the development of new electrodes, combining the advantages of both approaches. In the context of CO2 electroreduction, molecular enhancement of planar copper electrodes has enabled promising advancement towards high Faradaic efficiencies for multicarbon products. Besides, nanostructured copper electrodes have also demonstrated enhanced performance at comparatively low overpotentials. Herein, we report a novel and convenient method for nanostructuring copper electrodes using N,N’‐ethylene‐phenanthrolinium dibromide as molecular additive. Selectivities up to 70% for C≥2 products are observed for more than 40 h without significant change in the sur.
Two‐dimensional (2D) carbon nanofilm with uniform artificial nanopores is an ideal material to ultimately suppress the fuel permeation in the proton exchange membrane fuel cells. Graphdiyne has great mechanical strength, high dimensional stability, and controllable nanopores, and holds a bright prospect to play this crucial role. It is found that graphdiyne nanofilm with amino groups and natural nanopores can be easily prepared with high integrity. The aminated graphdiyne has good compatibility with the Nafion matrix due to the acid‐base interaction between them. The excellent comprehensive properties of graphdiyne in selectivity, dimensional stability, and integrity effectively improve the power performance and stability of fuel cells at w.
The production of multicarbon products (C2+) from CO2 electroreduction reaction (CO2RR) is highly desirable for storing renewable energy and reducing carbon emission. Here we report the electrochemical synthesis of CO2RR catalysts that are highly selective for C2+ products via electrolyte‐driven nanostructuring. Nanostructured Cu catalysts synthesized in the presence of specific anions can selectively convert CO2 to ethylene and multicarbon alcohols in aqueous 0.1 M KHCO3 solution, with the iodine‐modified catalyst displaying the highest Faradaic efficiency of ~80% and partial current density of ~31.2 mA cm−2 for C2+ products at −0.9 V vs RHE. Operando X‐ray absorption spectroscopy and quasi in situ X‐ray photoelectron spectroscopy measurem.
Oxidative dehydrogenation of ethane (ODE) is limited by the facile deep oxidation and potential safety hazard. Herein, electrochemical ODE reaction is incorporated into the anode of a solid oxide electrolysis cell, utilizing the oxygen species generated at anode to catalytically convert ethane, which can avoid deep oxidation and reaction unsafety. By infiltrating g‐Al 2 O 3 onto the surface of La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3‐ δ ‐Sm 0.2 Ce 0.8 O 2‐ δ (LSCF‐SDC) anode, the ethylene selectivity reaches as high as 92.5%, while the highest ethane conversion is up to 29.1% at 600 °C with optimized current and ethane flow rate. Density functional theory calculations and in situ X‐ray photoelectron spectroscopy characterizations reveal that the Al
WhatSOP? The first highly enantioselective Pd‐catalyzed thiocarbonylation of styrenes using a SOP ligand (see scheme) under mild reaction conditions has been realized. The method can also be used for the late‐stage modification of bioactive compounds. Mechanistic studies suggest that p‐TsOH plays a key role in the catalytic process. A plausible catalytic cycle was proposed. Abstract. A highly enantioselective thiocarbonylation of styrenes with CO and thiols has been achieved by Pd catalysis, providing highly enantioenriched thioesters in good to excellent yields. Key to the successful execution of this reaction is the use of a chiral sulfoxide‐(P‐dialkyl)‐phosphine (SOP) ligands. This thiocarbonylation proceeds smoothly under mild reaction c.

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