CO 2 capture using mesocellular siliceous foam (MCF)-supported CaO

Fei Gao, Jiali Huang, Hongman Sun, Jun Hu, Meihong Wang, Jiawei Mi, Chunfei Wu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

CaO is a promising material as an alternative CO 2 capture material which can be used at high temperature. However, CaO sinters to form large particles under long-term high temperature conditions, resulting in a rapid decrease of its surface area and the capacity of CO 2 capture. Incorporating CaO into inert materials is a promising strategy to enhance the performance of CO 2 capture. This work investigated a novel composite material called mesocellular siliceous foam (MCF)-supported CaO to enhance the stability and capacity of CaO-based materials for CO 2 capture. The crystal structure, surface morphology and porosity property of the developed composite materials were investigated. Thermogravimetric measurements were carried out to study the cyclic CO 2 capture performance of the MCF-supported CaO composites. The results showed that a part of CaO reacted with the silica wall, and the formation of Ca 2 SiO 4 within the MCF framework limited the presence of CaO in the mesopores, thus inhibited the sintering of CaO. The sample of MCF-3CaO exhibited a better performance of CO 2 capture and long-term stability, compared with the materials prepared with lower CaO loading. This work contributes to the development of high temperature CO 2 capture adsorbents, which can be applied for decarbonizing major industrials e.g. power plant.

Original languageEnglish
JournalJournal of the Energy Institute
Early online date05 Sep 2018
DOIs
Publication statusEarly online date - 05 Sep 2018

Keywords

  • CaO
  • CO capture
  • Mesocellular siliceous foam

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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