Simultaneous catalytic removal of NOx, SOx, and CO from FCC regenerator

Bin Wen; Mingyuan He; Colleen Costello

doi:10.1021/ef010268r

Simultaneous catalytic removal of NO_x, SO_x, and CO from FCC regenerator

Bin Wen, Mingyuan He, Colleen Costello

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

46 Scopus citations

Abstract

Simultaneous catalytic removal of NO_x, SO_x, and CO under simulated FCC regenerator conditions was investigated over mixed oxide catalysts CuMgAlO (Cu-cat), CeMgAlO (Ce-cat), and CuCeMgAlO (CuCe-cat), which were prepared by coprecipitation and characterized by XRD, XPS, and N₂ adsorption-desorption. At low temperatures (<340 °C), the presence of O₂ or H₂O enhanced the activity of CuCe-cat for NO and CO conversion but significantly suppressed the activity of Cu-cat and Ce-cat. At high temperature (720 °C), the presence of O₂ or H₂O had no adverse effect on the NO and CO conversions over these catalysts. However, the presence of SO₂ in the feed deactivated Cu-cat and Ce-cat drastically while no deactivation of CuCe-cat was observed. The enhanced performance of CuCe-cat can be explained by a synergistic effect between copper and cerium ions, which results in the formation of large amounts of Cu⁺ ions and oxygen vacancies. Thermogravimetric studies show that this catalyst exhibits excellent performance for SO_x adsorption in the SO₂ + O₂ system and can effectively release the adsorbed SO_x in H₂ + Ar atmosphere.

Original language	English
Pages (from-to)	1048-1053
Number of pages	6
Journal	Energy and Fuels
Volume	16
Issue number	5
DOIs	https://doi.org/10.1021/ef010268r
State	Published - Sep 2002
Externally published	Yes

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title = "Simultaneous catalytic removal of NOx, SOx, and CO from FCC regenerator",

abstract = "Simultaneous catalytic removal of NOx, SOx, and CO under simulated FCC regenerator conditions was investigated over mixed oxide catalysts CuMgAlO (Cu-cat), CeMgAlO (Ce-cat), and CuCeMgAlO (CuCe-cat), which were prepared by coprecipitation and characterized by XRD, XPS, and N2 adsorption-desorption. At low temperatures (<340 °C), the presence of O2 or H2O enhanced the activity of CuCe-cat for NO and CO conversion but significantly suppressed the activity of Cu-cat and Ce-cat. At high temperature (720 °C), the presence of O2 or H2O had no adverse effect on the NO and CO conversions over these catalysts. However, the presence of SO2 in the feed deactivated Cu-cat and Ce-cat drastically while no deactivation of CuCe-cat was observed. The enhanced performance of CuCe-cat can be explained by a synergistic effect between copper and cerium ions, which results in the formation of large amounts of Cu+ ions and oxygen vacancies. Thermogravimetric studies show that this catalyst exhibits excellent performance for SOx adsorption in the SO2 + O2 system and can effectively release the adsorbed SOx in H2 + Ar atmosphere.",

author = "Bin Wen and Mingyuan He and Colleen Costello",

year = "2002",

month = sep,

doi = "10.1021/ef010268r",

language = "英语",

volume = "16",

pages = "1048--1053",

journal = "Energy and Fuels",

issn = "0887-0624",

publisher = "American Chemical Society",

number = "5",

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TY - JOUR

T1 - Simultaneous catalytic removal of NOx, SOx, and CO from FCC regenerator

AU - Wen, Bin

AU - He, Mingyuan

AU - Costello, Colleen

PY - 2002/9

Y1 - 2002/9

N2 - Simultaneous catalytic removal of NOx, SOx, and CO under simulated FCC regenerator conditions was investigated over mixed oxide catalysts CuMgAlO (Cu-cat), CeMgAlO (Ce-cat), and CuCeMgAlO (CuCe-cat), which were prepared by coprecipitation and characterized by XRD, XPS, and N2 adsorption-desorption. At low temperatures (<340 °C), the presence of O2 or H2O enhanced the activity of CuCe-cat for NO and CO conversion but significantly suppressed the activity of Cu-cat and Ce-cat. At high temperature (720 °C), the presence of O2 or H2O had no adverse effect on the NO and CO conversions over these catalysts. However, the presence of SO2 in the feed deactivated Cu-cat and Ce-cat drastically while no deactivation of CuCe-cat was observed. The enhanced performance of CuCe-cat can be explained by a synergistic effect between copper and cerium ions, which results in the formation of large amounts of Cu+ ions and oxygen vacancies. Thermogravimetric studies show that this catalyst exhibits excellent performance for SOx adsorption in the SO2 + O2 system and can effectively release the adsorbed SOx in H2 + Ar atmosphere.

AB - Simultaneous catalytic removal of NOx, SOx, and CO under simulated FCC regenerator conditions was investigated over mixed oxide catalysts CuMgAlO (Cu-cat), CeMgAlO (Ce-cat), and CuCeMgAlO (CuCe-cat), which were prepared by coprecipitation and characterized by XRD, XPS, and N2 adsorption-desorption. At low temperatures (<340 °C), the presence of O2 or H2O enhanced the activity of CuCe-cat for NO and CO conversion but significantly suppressed the activity of Cu-cat and Ce-cat. At high temperature (720 °C), the presence of O2 or H2O had no adverse effect on the NO and CO conversions over these catalysts. However, the presence of SO2 in the feed deactivated Cu-cat and Ce-cat drastically while no deactivation of CuCe-cat was observed. The enhanced performance of CuCe-cat can be explained by a synergistic effect between copper and cerium ions, which results in the formation of large amounts of Cu+ ions and oxygen vacancies. Thermogravimetric studies show that this catalyst exhibits excellent performance for SOx adsorption in the SO2 + O2 system and can effectively release the adsorbed SOx in H2 + Ar atmosphere.

UR - https://www.scopus.com/pages/publications/0036708650

U2 - 10.1021/ef010268r

DO - 10.1021/ef010268r

M3 - 文章

AN - SCOPUS:0036708650

SN - 0887-0624

VL - 16

SP - 1048

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JO - Energy and Fuels

JF - Energy and Fuels

IS - 5

ER -

Simultaneous catalytic removal of NO_x, SO_x, and CO from FCC regenerator

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