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High-Temperature Carbon Dioxide Capture in a Porous Material with Terminal Zinc Hydride Sites

Published

Author(s)

Rachel Rohde, Kurtis Carsch, Matthew Dods, Henry Jiang, Alexandra McIsaac, Ryan Klein, Hyunchul Kwon, Sarah Karstens, Yang Wang, Adrian Huang, Jordan Taylor, Yuto Yabuuchi, Nikolay Tkachenko, Katie Meihaus, Hiroyasu Furukawa, Danielle Yahne, Kaitlyn Engler, Karen Bustillo, Andrew Minor, Jeffrey Reimer, Martin Head-Gordon, Craig Brown, Jeffrey Long

Abstract

Carbon capture can mitigate point-source carbon dioxide (CO2) emissions, but hurdles remain that impede the widespread adoption of amine-based technologies. Capturing CO2 at temperatures closer to those of many industrial exhaust streams (>200°C) is of interest, although metal oxide absorbents that operate at these temperatures typically exhibit sluggish CO2 absorption kinetics and instability to cycling. Here, we report a porous metal–organic framework featuring terminal zinc hydride sites that reversibly bind CO2 at temperatures above 200°C—conditions that are unprecedented for intrinsically porous materials. Gas adsorption, structural, spectroscopic, and computational analyses elucidate the rapid, reversible nature of this transformation. Extended cycling and breakthrough analyses reveal that the material is capable of deep carbon capture at low CO2 concentrations and high temperatures relevant to postcombustion capture.
Citation
Science
Volume
386
Issue
6723

Keywords

Metal organic framework, CO2 capture, carbon dioxide capture

Citation

Rohde, R. , Carsch, K. , Dods, M. , Jiang, H. , McIsaac, A. , Klein, R. , Kwon, H. , Karstens, S. , Wang, Y. , Huang, A. , Taylor, J. , Yabuuchi, Y. , Tkachenko, N. , Meihaus, K. , Furukawa, H. , Yahne, D. , Engler, K. , Bustillo, K. , Minor, A. , Reimer, J. , Head-Gordon, M. , Brown, C. and Long, J. (2024), High-Temperature Carbon Dioxide Capture in a Porous Material with Terminal Zinc Hydride Sites, Science, [online], https://doi.org/10.1126/science.adk569, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=956639 (Accessed February 11, 2025)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created November 15, 2024, Updated January 15, 2025