Metallic Catalysts for Oxidative Dehydrogenation of Propane Using CO₂

Abstract

The oxidative dehydrogenation of propane using CO2 (CO2−ODP) is a promising technique for realizing high‐yield propylene production and CO2 usage. Developing a highly efficient catalyst for CO2−ODP is essential and beneficial to the chemical industry and for realizing net‐zero emissions. Many studies have investigated metal oxide‐based catalysts, revealing that rapid deactivation and low selectivity remain limiting factors for their industrial applications. In recent years, metallic nanoparticle catalysts have become increasingly attractive due to their unique properties. Therefore, we summarize the performance of metal‐based catalysts in CO2−ODP reactions by considering catalyst design concepts, different mechanisms in the reaction process, and the role of CO2.

Transitioning towards Net-Zero Emissions in Chemical and Process Industries: A Holistic Perspective

“…One example is the development of a sustainable closed-loop supply chain (SCLSC) incorporating a nondominated sorting genetic algorithm that considers multiple subsystems and enables the optimization of concrete production to reduce carbon intensity while considering the complexity of customers, suppliers, production, and recycling stations [20]. In contrast to large-scale management systems, new technologies such as lab-on-a-chip are becoming increasingly popular [21].Computer-assisted engineering approaches are also important for integrating and optimizing existing processes with the aim of reducing emissions, as shown for example in the oxidative dehydrogenation of propane using CO 2 (CO 2 -ODP) [22,23], a coal gasification system integrating a commercially available coal gasifier with the Allam Cycle [24], or optimizing carbon and energy flows in ethylene production [25].…”

CO2-Assisted Dehydrogenation of Propane by Atomically Dispersed Pt on MXenes

“…The critical challenge for the metal oxide catalysts is their deficiency in CO 2 activation suppressing the promotional role of CO 2 in propane dehydrogenation. 1,16 Even worse, the CO 2 addition could result in reduced propane conversion and propylene yield due to competitive adsorption between CO 2 and propane at the same active site. 1,17−19 Metallic catalysts, particularly Pt-based catalysts, have exhibited much higher CO 2 conversions without hindering propane activation.…”

“…1,17−19 Metallic catalysts, particularly Pt-based catalysts, have exhibited much higher CO 2 conversions without hindering propane activation. 16,20,21 Recently, the Pt−Co−In/CeO 2 22 and Pt− Co−Ni−Sn−In−Ga/CeO 2 23 alloy catalysts with multifunctionalities showed very high efficiencies in CO 2 utilization without compromising the propane conversion. Metallic Pt diluted by the inert In/Sn/Ga components serves to activate the C−H bonds in propane, while the Co/Ni sites are responsible for the CO 2 dissociation.…”

“…The former involves the direct activations of the C–H bonds in propane by surface O* species from CO 2 dissociation, leading to the direct combination of H in propane and surface O* into H 2 O, whereas the latter proceeds sequentially and separately via the DDHP and RWGS reactions. , Metal oxide catalysts, such as CrO x , GaO x , and VO x , were the first class of catalytic materials employed in the CO 2 -ODHP reaction. The critical challenge for the metal oxide catalysts is their deficiency in CO 2 activation suppressing the promotional role of CO 2 in propane dehydrogenation. , Even worse, the CO 2 addition could result in reduced propane conversion and propylene yield due to competitive adsorption between CO 2 and propane at the same active site. ,− Metallic catalysts, particularly Pt-based catalysts, have exhibited much higher CO 2 conversions without hindering propane activation. ,, Recently, the Pt–Co–In/CeO 2 and Pt–Co–Ni–Sn–In–Ga/CeO 2 alloy catalysts with multifunctionalities showed very high efficiencies in CO 2 utilization without compromising the propane conversion. Metallic Pt diluted by the inert In/Sn/Ga components serves to activate the C–H bonds in propane, while the Co/Ni sites are responsible for the CO 2 dissociation.…”