CO₂ Conversion via Reverse Water Gas Shift Reaction Using Fully Selective Mo-P Multicomponent Catalysts.

Area of Science:

• Catalysis
• Materials Science
• Chemical Engineering

Background:

• The reverse water gas shift (RWGS) reaction is crucial for CO2 utilization, producing synthesis gas.
• Commercialization requires earth-abundant catalysts that prevent methanation and maintain stability at high temperatures.

Purpose of the Study:

• To identify a nonprecious metal catalyst for efficient and selective RWGS.
• To evaluate molybdenum phosphide (MoP) for CO2 conversion and synthesis gas production.

Main Methods:

• Synthesis and characterization of supported molybdenum phosphide (MoP) catalysts.
• Testing catalyst performance in the RWGS reaction under elevated temperatures.
• Assessing catalyst stability and selectivity, particularly suppression of methanation.

Main Results:

• Supported MoP catalysts completely suppressed the competing methanation reaction.
• MoP catalysts demonstrated stable performance with minimal deactivation at high temperatures.
• High conversions were achieved, producing significant quantities of water.

Conclusions:

• Molybdenum phosphide (MoP) is a promising earth-abundant catalyst for the RWGS reaction.
• MoP catalysts offer a viable pathway for CO2 utilization by producing synthesis gas.
• The suppression of methanation and catalyst stability are key advantages for industrial application.