CO2 hydrogenation catalysts for the commercial production of syngas

• Main Authors: Hanbury, Orion, Schuetzle, Robert, Galloway, Anja Rumplecker, Schuetzle, Dennis
• Format: Patent
• Language: English
• Published: 18.05.2023
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

The present invention is generally directed to the production of low-carbon syngas from captured CO2 and renewable H2. The H2 is generated from water using an electrolyzer powered by renewable electricity, or from any other method of low-carbon H2 production. The improved catalysts use low-cost metals, they can be produced economically in commercial quantities, and they are chemically and physically stable up to 2,100° F. CO2 conversion is between 80% and 100% with CO selectivity of greater than 99%. The catalysts don't sinter or form coke when converting H2:CO2 mixtures to syngas in the operating ranges of 1,300-1,800° F., pressures of 75-450 psi, and space velocities of 2,000-100,000 hr−1. The catalysts are stable, exhibiting between 0 and 1% CO2 conversion decline per 1,000 hrs. The syngas can be used for the synthesis of low-carbon fuels and chemicals, or for the production of purified H2. The H2 can be used at the production site for the synthesis of low-carbon chemical products or compressed for transportation use.