Porous carbon derived from metal organic framework for gas storage and separation: The size effect.

• The size effect of Zn-MOF on the porosity and gas uptake of its derived carbon are investigated. • The large-size MOF tend to form porous carbons with higher specific surface area and large pore size. • The carbon derived from small-size MOF shows lower specific surface area and more micropores. • The CS-1000 shows a high CO 2 , H 2 and CH 4 uptake of uptake of 129.2, 241.6 cm3 g−1 and 58.3 cm3 g−1. Metal organic framework (MOF) derived carbon is an important kind of carbons with various potential applications. The structure of MOF precursor plays a key role in the proprieties of their derived carbon. Herein, the size effect of a Zn-MOF on the porosity and gas uptake of its derived carbon are investigated in detail. We found that the large-size MOF tend to form porous carbons with higher specific surface area as well as large pore size, while the carbon derived from small-size MOF shows lower specific surface area and more micropores as well as higher gas uptake. Especially, the CS-1000 derived from Zn-MOF-small shows a high CO 2 uptake of 129.2 cm3 g−1 at 273 K and 1 bar, a high H 2 uptake of 241.6 cm3 g−1 at 77 K and 1 bar, and a high CH 4 uptake of 58.3 cm3 g−1 at 273 K and 1 bar, making it very potential for carbon capture and sequestration and clean energy storage. [ABSTRACT FROM AUTHOR]