CO<sub>2</sub> capture by double metal modified CaO-based sorbents from pyrolysis gases

Xiaobin Chen; Yuting Tang; Chuncheng Ke; Chaoyue Zhang; Sichun Ding; Xiaoqian Ma

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CO₂ capture by double metal modified CaO-based sorbents from pyrolysis gases

Updated：2026-01-06

- CO₂ capture by double metal modified CaO-based sorbents from pyrolysis gases
- Chinese Journal of Chemical Engineering Vol. 43, Issue 3, Pages: 40-49(2022)
- Affiliations：
  
  1. School of Electric Power, South China University of Technology,Guangzhou,China,510640
  2. Guangdong Province Key Laboratory of Efficient and Clean Energy Utilization,Guangzhou,China,510640
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：2022
- Accepted：
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capture by double metal modified CaO-based sorbents from pyrolysis gases[J]. 中国化学工程学报, 2022, 43(3): 40-49.
DOI：

capture by double metal modified CaO-based sorbents from pyrolysis gases[J]. 中国化学工程学报, 2022, 43(3): 40-49. DOI：

摘要

Abstract

High-temperature pyrolysis technology can effectively solve the problem of municipal solid waste pollution. However

the pyrolysis gas contains a large amount of CO

which would adversely affect the subsequent utilization. To address this problem

a novel method of co-precipitation modification with Ca

Mg and Zr metals was proposed to improve the CO

capture performance. X-ray diffraction (XRD) patterns and energy dispersive X-ray spectroscopy analysis showed that the two inert supports MgO and CaZrO

were uniformly distributed in the modified calcium-based sorbents. In addition

the XRD results indicated that CaZrO

was produced by the reaction of ZrO

and CaO at high temperatures. The effects of doping ratios

adsorption temperature

calcination temperature

concentration and calcination atmosphere on the adsorption capacity and cycle stability of the modified calcium-based sorbent were studied. The modified calcium-based sorbent achieved the best CO

capture performance when the doping ratio was 10:1:1 with carbonation at 700 ℃ under 20% CO

/80% N

atmosphere and calcination at 900 ℃ under 100% N

atmosphere. After ten cycles

the average carbonation conversion rate of Ca-10 sorbent was 72%. Finally

the modified calcium-based sorbents successfully reduced the CO

concentration of the pyrolysis gas from 37% to 5%.

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CO2 capture by double metal modified CaO-based sorbents from pyrolysis gases

DOI：

摘要

Abstract

关键词

Keywords

references

CO₂ capture by double metal modified CaO-based sorbents from pyrolysis gases