Catalytic oxidation of toluene and p-xylene using gold supported on Co 3O4 catalyst prepared by colloidal precipitation method

Hongjing Wu; Liuding Wang; Zhongyuan Shen; Jinghui Zhao

doi:10.1016/j.molcata.2011.10.005

Catalytic oxidation of toluene and p-xylene using gold supported on Co ₃O₄ catalyst prepared by colloidal precipitation method

Hongjing Wu, Liuding Wang, Zhongyuan Shen, Jinghui Zhao

School of Physical Science and Technology

Northwestern Polytechnical University Xian

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

77 Scopus citations

Abstract

Gold supported on cobalt oxide has been successfully synthesized through a colloidal precipitation method and tested in toluene and p-xylene total oxidation. It has been demonstrated that the catalytic activity of Au/Co ₃O₄ for toluene and p-xylene oxidation is much higher than that of Au/Al₂O₃ and Au/MgO in spite of its lower BET surface area and larger gold crystalline size. The enhanced catalytic activity in toluene and p-xylene oxidation has been linked to a high concentration of superficial electrophilic oxygen species and oxygen vacancies, which may be originated from a strong interaction in the colloidal Au-Co₃O ₄ system.

Original language	English
Pages (from-to)	188-195
Number of pages	8
Journal	Journal of Molecular Catalysis A: Chemical
Volume	351
DOIs	https://doi.org/10.1016/j.molcata.2011.10.005
State	Published - Dec 2011

Keywords

Au/CoO
Electrophilic oxygen species
Oxygen vacancies
Strong interaction
Toluene and p-xylene oxidation

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10.1016/j.molcata.2011.10.005

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title = "Catalytic oxidation of toluene and p-xylene using gold supported on Co 3O4 catalyst prepared by colloidal precipitation method",

abstract = "Gold supported on cobalt oxide has been successfully synthesized through a colloidal precipitation method and tested in toluene and p-xylene total oxidation. It has been demonstrated that the catalytic activity of Au/Co 3O4 for toluene and p-xylene oxidation is much higher than that of Au/Al2O3 and Au/MgO in spite of its lower BET surface area and larger gold crystalline size. The enhanced catalytic activity in toluene and p-xylene oxidation has been linked to a high concentration of superficial electrophilic oxygen species and oxygen vacancies, which may be originated from a strong interaction in the colloidal Au-Co3O 4 system.",

keywords = "Au/CoO, Electrophilic oxygen species, Oxygen vacancies, Strong interaction, Toluene and p-xylene oxidation",

author = "Hongjing Wu and Liuding Wang and Zhongyuan Shen and Jinghui Zhao",

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doi = "10.1016/j.molcata.2011.10.005",

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journal = "Journal of Molecular Catalysis A: Chemical",

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T1 - Catalytic oxidation of toluene and p-xylene using gold supported on Co 3O4 catalyst prepared by colloidal precipitation method

AU - Wu, Hongjing

AU - Wang, Liuding

AU - Shen, Zhongyuan

AU - Zhao, Jinghui

PY - 2011/12

Y1 - 2011/12

N2 - Gold supported on cobalt oxide has been successfully synthesized through a colloidal precipitation method and tested in toluene and p-xylene total oxidation. It has been demonstrated that the catalytic activity of Au/Co 3O4 for toluene and p-xylene oxidation is much higher than that of Au/Al2O3 and Au/MgO in spite of its lower BET surface area and larger gold crystalline size. The enhanced catalytic activity in toluene and p-xylene oxidation has been linked to a high concentration of superficial electrophilic oxygen species and oxygen vacancies, which may be originated from a strong interaction in the colloidal Au-Co3O 4 system.

AB - Gold supported on cobalt oxide has been successfully synthesized through a colloidal precipitation method and tested in toluene and p-xylene total oxidation. It has been demonstrated that the catalytic activity of Au/Co 3O4 for toluene and p-xylene oxidation is much higher than that of Au/Al2O3 and Au/MgO in spite of its lower BET surface area and larger gold crystalline size. The enhanced catalytic activity in toluene and p-xylene oxidation has been linked to a high concentration of superficial electrophilic oxygen species and oxygen vacancies, which may be originated from a strong interaction in the colloidal Au-Co3O 4 system.

KW - Au/CoO

KW - Electrophilic oxygen species

KW - Oxygen vacancies

KW - Strong interaction

KW - Toluene and p-xylene oxidation

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DO - 10.1016/j.molcata.2011.10.005

M3 - 文章

AN - SCOPUS:81155134739

SN - 1381-1169

VL - 351

SP - 188

EP - 195

JO - Journal of Molecular Catalysis A: Chemical

JF - Journal of Molecular Catalysis A: Chemical

ER -

Catalytic oxidation of toluene and p-xylene using gold supported on Co ₃O₄ catalyst prepared by colloidal precipitation method

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Keywords

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