High-temperature carbon dioxide capture in a porous material with terminal zinc hydride sites

Carbon capture can mitigate point-source carbon dioxide (CO 2 ) emissions, but hurdles remain that impede the widespread adoption of amine-based technologies. Capturing CO 2 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 CO 2 absorption kinetics and instability to cycling. Here, we report a porous metal–organic framework featuring terminal zinc hydride sites that reversibly bind CO 2 at temperatures above 200°C—conditions that are unprecedented for intrinsically porous materials. Gas adsorption, structural, spectroscopic, and computational analyses elucidate the rapid,…

• UD
  U.S. Department of Energy

  Awards: -AC02-05CH11231, DE-AC36-8GO28308, 05CH11231, DESC0019992, AC02-05CH11231, DE-AC02, DE-AC02-05CH11231, DE-AC02-
• NE
  National Energy Research Scientific Computing Center

  Awards: 05CH11231, AC02-05CH11231
• OO
  Office of Science

  Awards: AC02-05CH11231, -AC02-05CH11231, DE-AC02
• BE
  Basic Energy Sciences

  Awards: DE-AC02, DESC0019992, AC02-05CH11231, DE-AC02-05CH11231, AC36-, -AC02-05CH11231
• HA
  Hydrogen and Fuel Cell Technologies Office

  Awards: DE-AC02-05CH11231, AC02-05CH11231
• NR
  National Renewable Energy Laboratory

  Awards: DE-AC02-05CH11231, DE-AC36-8GO28308
• LB
  Lawrence Berkeley National Laboratory

  Awards: DE-AC02-05CH11231, 05CH11231, AC02-05CH11231