SOx oxidation and adsorption by CeO2/MgO: Synergistic effect between CeO2 and MgO in the fluid catalytic cracking process

Lei Jiang; Min Wei; Xiangyu Xu; Yanjun Lin; Zhi Lü; Jiaqing Song; Xue Duan

doi:10.1021/ie102243y

SO_x oxidation and adsorption by CeO₂/MgO: Synergistic effect between CeO₂ and MgO in the fluid catalytic cracking process

Lei Jiang, Min Wei, Xiangyu Xu, Yanjun Lin, Zhi Lü, Jiaqing Song, Xue Duan

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

16 Citations (Scopus)

Abstract

The sulfur-transfer catalyst plays an important role in the fluid catalytic cracking (FCC) process through which the sulfur oxides (SO_x) are removed from flue gas. This work reports the synergistic effect between CeO ₂ and MgO on the SO_x oxidation and adsorption in the FCC process. The CeO₂ acts as the oxidation promoter, while MgO is the active phase for SO_x adsorption. The influence of crystal size on the synergistic effect between CeO₂ and MgO on the SO_x oxidation and adsorption was investigated. It was observed that the initial apparent SO_x pick-up rate decreases with the increase in the CeO ₂ crystal size, while the maximum SO_x oxidation and adsorption capacity decreases with the increase in the MgO crystal size. Therefore, this work provides a detailed understanding of the synergistic effect between CeO₂ and MgO for the SO_x pick-up, which is crucial for the rational design and preparation of the sulfur-transfer catalysts.

Original language	English
Pages (from-to)	4398-4404
Number of pages	7
Journal	Industrial and Engineering Chemistry Research
Volume	50
Issue number	8
DOIs	https://doi.org/10.1021/ie102243y
Publication status	Published - 20 Apr 2011
Externally published	Yes

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title = "SOx oxidation and adsorption by CeO2/MgO: Synergistic effect between CeO2 and MgO in the fluid catalytic cracking process",

abstract = "The sulfur-transfer catalyst plays an important role in the fluid catalytic cracking (FCC) process through which the sulfur oxides (SOx) are removed from flue gas. This work reports the synergistic effect between CeO 2 and MgO on the SOx oxidation and adsorption in the FCC process. The CeO2 acts as the oxidation promoter, while MgO is the active phase for SOx adsorption. The influence of crystal size on the synergistic effect between CeO2 and MgO on the SOx oxidation and adsorption was investigated. It was observed that the initial apparent SOx pick-up rate decreases with the increase in the CeO 2 crystal size, while the maximum SOx oxidation and adsorption capacity decreases with the increase in the MgO crystal size. Therefore, this work provides a detailed understanding of the synergistic effect between CeO2 and MgO for the SOx pick-up, which is crucial for the rational design and preparation of the sulfur-transfer catalysts.",

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T1 - SOx oxidation and adsorption by CeO2/MgO

T2 - Synergistic effect between CeO2 and MgO in the fluid catalytic cracking process

AU - Jiang, Lei

AU - Wei, Min

AU - Xu, Xiangyu

AU - Lin, Yanjun

AU - Lü, Zhi

AU - Song, Jiaqing

AU - Duan, Xue

PY - 2011/4/20

Y1 - 2011/4/20

N2 - The sulfur-transfer catalyst plays an important role in the fluid catalytic cracking (FCC) process through which the sulfur oxides (SOx) are removed from flue gas. This work reports the synergistic effect between CeO 2 and MgO on the SOx oxidation and adsorption in the FCC process. The CeO2 acts as the oxidation promoter, while MgO is the active phase for SOx adsorption. The influence of crystal size on the synergistic effect between CeO2 and MgO on the SOx oxidation and adsorption was investigated. It was observed that the initial apparent SOx pick-up rate decreases with the increase in the CeO 2 crystal size, while the maximum SOx oxidation and adsorption capacity decreases with the increase in the MgO crystal size. Therefore, this work provides a detailed understanding of the synergistic effect between CeO2 and MgO for the SOx pick-up, which is crucial for the rational design and preparation of the sulfur-transfer catalysts.

AB - The sulfur-transfer catalyst plays an important role in the fluid catalytic cracking (FCC) process through which the sulfur oxides (SOx) are removed from flue gas. This work reports the synergistic effect between CeO 2 and MgO on the SOx oxidation and adsorption in the FCC process. The CeO2 acts as the oxidation promoter, while MgO is the active phase for SOx adsorption. The influence of crystal size on the synergistic effect between CeO2 and MgO on the SOx oxidation and adsorption was investigated. It was observed that the initial apparent SOx pick-up rate decreases with the increase in the CeO 2 crystal size, while the maximum SOx oxidation and adsorption capacity decreases with the increase in the MgO crystal size. Therefore, this work provides a detailed understanding of the synergistic effect between CeO2 and MgO for the SOx pick-up, which is crucial for the rational design and preparation of the sulfur-transfer catalysts.

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SOx oxidation and adsorption by CeO2/MgO: Synergistic effect between CeO2 and MgO in the fluid catalytic cracking process

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SO_x oxidation and adsorption by CeO₂/MgO: Synergistic effect between CeO₂ and MgO in the fluid catalytic cracking process