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The separation of H2S from natural gas, biogas, and coal gas is an essential process that requires large energy input and high capital costs. We propose a new sorption-based process, which can be coupled with the Claus desulfurization process to reduce sulfur emissions. This new process is based on a new sorbent material consisting of a specific composition of Cu, Mg, and Al oxides and exhibiting superior sulfur capacity (μ7.5 mmol/g) at process conditions compatible for integration with the Claus process. CuO is the active sorbent component, which during H2S uptake is converted to CuS and can be fully regenerated during cyclic operation. Al2O3 and small amounts of MgO are shown to be essential components that contribute to sorbent activity and stability.
Bibliographical noteFunding Information:
This project was financially supported by the Gas Sub-Committee R&D arm of Abu Dhabi National Oil Company, United Arab Emirates. Y.A.W. acknowledges financial support from a Khalifa University of Science and Technology Center for Catalysis and Separations grant under RCII-2018-024. S.G. and K.A.M. were supported by the National Science Foundation (NSF) through the UMN MRSEC under Award DMR-2011401. Parts of this work were carried out in the Characterization Facility, University of Minnesota, which receives partial support from the NSF through the MRSEC (Award Number DMR-2011401) and the NNCI (Award Number ECCS-2025124) programs. The authors thank Professor R. Lee Penn for use of the powder X-ray diffractometer.
© 2021 American Chemical Society.
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- 2 Active
9/1/20 → 8/31/26
Project: Research project