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

Published

November 15, 2024

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

Pub Type

Journals

Download Paper

https://doi.org/10.1126/science.adk569

Local Download

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 October 7, 2025)