Reverse Water-Gas Shift Catalysis with Copper Exchanged Zeolites

The objective of the proposed program is to develop a catalytic system for efficient conversion of carbon dioxide and hydrogen to carbon monoxide and steam (reverse water-gas shift). The technical objectives will be achieved by optimizing both the catalyst material and process operating conditions. Alumina and metal oxide supported copper has been shown to be an effective catalyst for the reverse water-gas shift (RWGS) reaction, but investigations of copper exchanged zeolite catalysts have not been reported. Given the unique characteristics of aluminosilicates as a catalyst support, the application of copper exchanged zeolites to RWGS catalysis possesses a high probability of demonstrating unprecedented activity and selectivity. Copper exchanged catalysts of zeolite Y and ZSM-5 will be tested for RWGS activity, and variables such as inclusion of alkali promoters, CO2:H2 feed ratio, and temperature will be optimized. The incentive for this project is to provide a simple, cost-effective method for the condensation of potable water from an otherwise uninhabitable Martian atmosphere. Additionally, potential application of the same technology to terrestrial chemical industry provides an excellent opportunity for procurement of Phase III funding.