Enhanced CO2 Sorption on Ordered Mesoporous Carbon CMK-3 in the Presence of Water

Jia Zhou, Wei Su, Yan Sun, Shuguang Deng, Xiaojing Wang

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

Mesoporous carbon CMK-3 was synthesized via a hard template method. The structures of the pores were characterized by N2 adsorption at 77K, XRD, and TEM examinations. The BET surface area and total pore volume were 1115 m2/g and 1.11 cm3/g, respectively. Adsorption isotherms of carbon dioxide on the CMK-3 in the presence of water were collected. At 275 K and 3.6 MPa, the CO2 sorption capacity was 42 mmol/g with a water to dry carbon weight ratio (Rw) of 2.35. This is 2.26 times as high as that for the dry CMK-3 sample and 23% higher than the highest CO2 sorption previously obtained on activated carbon with preadsorbed water. The enthalpy change obtained from the sorption isotherms was -55.6 kJ/mol, which is lower than the enthalpy for the formation of CO2 hydrate in pure water.

Original languageEnglish (US)
Pages (from-to)1348-1352
Number of pages5
JournalJournal of Chemical and Engineering Data
Volume61
Issue number3
DOIs
StatePublished - Mar 10 2016

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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