Doubly Decorated Platinum–Gallium Intermetallics as Stable Catalysts for Propane Dehydrogenation

Recent progress of Ga-based liquid metals in catalysis

Within the last decade, the application of gallium-based liquid metals in catalysis has received great attention from around the world. This article provides an overview concerning Ga-based liquid metals (LMs) in energy and environmental applications, such as the catalytic synthesis of ethylene by non-petroleum routes via Pd-Ga liquid catalysts, alkane dehydrogenation via Pd-Ga or Pt-Ga catalysts, CO2 hydrogenation to methanol via Ni Ga or Pd/Ga2O3 catalysts, and catalytic degradation of CO2 via EGaIn liquid metal catalysts below 500 °C, where Ga-based liquid metal catalysts exhibit high selectivity and low energy consumption. The formation of isolated metal sites in a liquid metal matrix allows the integration of several characteristics of multiphase catalysis (particularly the operational friendliness of product separation procedures) with those of homogeneous catalysis. In the end, this article sheds light on future prospects, opportunities, and challenges of liquid metal catalysis.

Tuning partially charged Ptδ+ of atomically dispersed Pt catalysts toward superior propane dehydrogenation performance

An experimentally obtained volcano-type curve is observed for propane dehydrogenation over a group of atomically dispersed Pt catalysts on various supports. The oxidation state of Ptδ+ active sites plays a determining role in enhancing the activity.