包硅改性纳米碳酸钙应用于高温CO<sub>2</sub>吸附的性能

WU Rong; WU Sufang

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包硅改性纳米碳酸钙应用于高温CO₂吸附的性能

更新时间：2025-12-10

- 包硅改性纳米碳酸钙应用于高温CO₂吸附的性能
- CIESC Journal Issue 7, (2006)
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- Online First：25 July 2006，
  
  Published：25 July 2006
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WU Rong, WU Sufang. 包硅改性纳米碳酸钙应用于高温CO₂吸附的性能[J]. CIESC Journal, 2006, (7).
DOI：

WU Rong, WU Sufang. 包硅改性纳米碳酸钙应用于高温CO₂吸附的性能[J]. CIESC Journal, 2006, (7). DOI：

摘要

Abstract

Nano-CaCO3 particles were surface-coated with SiO2 by the sol-gel method and used as the high temperature CO2 adsorption material.CaCO3 samples prepared at 60—90℃ were characterized with TEM

EDS and XRD methods and the initial and final decomposition temperature were determined with TGA.The CO2 adsorption ratio and carbonation-calcination characteristics were evaluated in a φ12 mm fixed bed reactor.The analytical results showed that there was an amorphous SiO2 film formed on the surface of nano-CaCO3

and the atomic ratio of Si to Ca is 1∶39.The initial and final decomposition temperatures were 595—620℃ and 800—820℃ respectively.The maximum CO2 adsorption ratio of SiO2 coated with nano-CaCO3 was 92.1% at 600℃with a 10% increase as compared with the uncoated nano-CaCO3 particles.After 20 cyclic carbonation and calcination runs

CO2 adsorption ratio of the SiO2 coated samples was 63%.The XRD analysis illustrated that the crystal type of nano-CaCO3 had no change after 20 cyclic runs.

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包硅改性纳米碳酸钙应用于高温CO2吸附的性能

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包硅改性纳米碳酸钙应用于高温CO₂吸附的性能