Turning waste into value: potassium-promoted Red Mud as an effective catalyst for the hydrogenation of CO2.
KAUST DepartmentChemical Engineering Program
KAUST Catalysis Center (KCC)
KAUST, KCC, SAUDI ARABIA.
King Abdullah University of Science and Technology, KCC, SAUDI ARABIA.
Physical Science and Engineering (PSE) Division
Online Publication Date2020-04-28
Print Publication Date2020-06-08
Embargo End Date2021-04-03
Permanent link to this recordhttp://hdl.handle.net/10754/662433
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AbstractSince 1887 Red Mud is an unavoidable waste derived from the production of alumina in the Bayer process. Because of its high alkalinity and metal loading, Red Mud disposal and storage constitute an important environmental risk. With worldwide storage capacity reaching its limits and no alternatives to the Bayer Process, the development of methods for the valorization of Red Mud is a must. Here, we demonstrate that Red Mud can be turned into an efficient catalyst for the valorization of CO 2 . By a simple potassium promotion, 45% conversion of CO 2 with a light olefin (C 2 -C 4 ) selectivity of 36% has been achieved at 350 ºC, 30 bar and at 9600 mL·g -1 ·h -1 , matching the performance of some of the best catalysts reported to date.
CitationRussikikh, A., Shterk, G., Solami, B., Fadhel, B., Ramirez, A., & Gascon, J. (2020). Turning waste into value: potassium-promoted Red Mud as an effective catalyst for the hydrogenation of CO2. ChemSusChem. doi:10.1002/cssc.202000242
SponsorsFunding for this work was provided by King Abdullah University of Science and Technology (KAUST).
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