Cyclic performance of CaCO3@mSiO2 for CO2 capture in a calcium looping cycle

Chien Cheng Li; Ui Ting Wu; Hong-Ping Lin

doi:10.1039/c4ta00516c

Cyclic performance of CaCO₃@mSiO₂ for CO₂ capture in a calcium looping cycle

Chien Cheng Li, Ui Ting Wu, Hong-Ping Lin

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

48 Citations (Scopus)

Abstract

A simple and cost-effective one-pot synthesis route to directly prepare CaCO₃@mesoporous silica in a core-shell structure (denoted as CaCO₃@mSiO₂) as a high-performance CO₂ sorbent has been developed. The (CaCO₃@mSiO₂)-based sorbents with and without pelletization showed superior CO₂ adsorption performance compared to a CaCO₃-based sorbent. The carbonation conversion of the (CaCO₃@mSiO₂)-based sorbents as well as the retention of the carbonation conversion has been significantly improved by coating the mesoporous silica onto the CaCO₃-based sorbents. The best adsorption performance is obtained by using the (CaCO₃@5.6 wt% mSiO ₂)-based sorbent. The improved carbonation conversion retention of the (CaCO₃@5.6 wt% mSiO₂)-based pellet sorbent is around 25% after 50 cycles of decarbonation/carbonation, which is higher than that of the CaCO₃-based sorbent (13%). The resultant (CaCO ₃@mSiO₂)-based sorbent has high resistance toward carbonation/decarbonation reaction.

Original language	English
Pages (from-to)	8252-8257
Number of pages	6
Journal	Journal of Materials Chemistry A
Volume	2
Issue number	22
DOIs	https://doi.org/10.1039/c4ta00516c
Publication status	Published - 2014 Jun 14

All Science Journal Classification (ASJC) codes

Chemistry(all)
Renewable Energy, Sustainability and the Environment
Materials Science(all)

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1039/c4ta00516c

Cite this

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title = "Cyclic performance of CaCO3@mSiO2 for CO2 capture in a calcium looping cycle",

abstract = "A simple and cost-effective one-pot synthesis route to directly prepare CaCO3@mesoporous silica in a core-shell structure (denoted as CaCO3@mSiO2) as a high-performance CO2 sorbent has been developed. The (CaCO3@mSiO2)-based sorbents with and without pelletization showed superior CO2 adsorption performance compared to a CaCO3-based sorbent. The carbonation conversion of the (CaCO3@mSiO2)-based sorbents as well as the retention of the carbonation conversion has been significantly improved by coating the mesoporous silica onto the CaCO3-based sorbents. The best adsorption performance is obtained by using the (CaCO3@5.6 wt% mSiO 2)-based sorbent. The improved carbonation conversion retention of the (CaCO3@5.6 wt% mSiO2)-based pellet sorbent is around 25% after 50 cycles of decarbonation/carbonation, which is higher than that of the CaCO3-based sorbent (13%). The resultant (CaCO 3@mSiO2)-based sorbent has high resistance toward carbonation/decarbonation reaction.",

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