Amino Nests Boost Pd/SiO Single-Atom Catalysts for Efficient Selective Semi-Hydrogenation of Acetylene.

The selective hydrogenation of acetylene to ethylene is a critical industrial process for purifying ethylene feedstocks. Palladium single-atom catalysts (Pd SACs) exhibit exceptional ethylene selectivity in this hydrogenation reaction. However, their isolated active sites show limited ability to capture and adsorb trace acetylene molecules from ethylene-rich streams, resulting in relatively low hydrogenation activity.

Vanillin-Derived Degradable and Reprocessable Liquid-Crystalline Epoxy Resins with High Intrinsic Thermal Conductivity.

The demand for high-functionality and miniaturized consumer electronics is driving the development of polymer packaging materials with intrinsically high thermal conductivity. Herein, a novel vanillin-based liquid-crystalline epoxy monomer (BEP) and three curing agents (ICA-1, ICA-2, and ICA-3) containing conjugated aromatic imine structures were synthesized. The results of X-ray diffraction measurements show that the structural order of the epoxy resins based on BEP and ICAs increases with the number of conjugated benzene rings in ICAs.

Fully Exposed Ru Clusters for the Efficient Multi-Step Toluene Hydrogenation Reaction.

Liquid organic hydrogen carriers (LOHCs) are attractive platform molecules that play an important role in hydrogen energy storage and utilization. The multi-step hydrogenation of toluene (TOL) to methylcyclohexane (MCH) has been widely studied in the LOCHs systems, due to their relatively low toxicity and reasonable hydrogen storage capacity. Noble metal catalysts such as Ru has exhibited good performance in multi-step hydrogenation reactions, while the application is still hindered by their high cost and low specific activity.

Palladium single-atom catalysts synthesized by a gas-assisted redispersion strategy for efficient benzaldehyde hydrogenation.

A simple and efficient strategy was developed for the synthesis of Pd single-atom catalysts (Pd/G) by nitric acid vapor-assisted redispersion. The as-prepared Pd/G displayed robust catalytic performance in the selective hydrogenation reaction of benzaldehyde. This work paves a new way for the design of supported Pd single-atom catalysts.