Pulse studies of CH4 interaction with NiO/Al2O3 catalysts

C. T. Au; Y. H. Hu; H. L. Wan

doi:10.1007/BF00806993

Pulse studies of CH₄ interaction with NiO/Al₂O₃ catalysts

C. T. Au^*, Y. H. Hu, H. L. Wan

^*Corresponding author for this work

Department of Chemistry

Research output: Contribution to journal › Journal article › peer-review

55 Citations (Scopus)

Abstract

Pulse studies of the interaction of CH₄ and NiO/Al₂O₃ catalysts at 500°C indicate that CH₄ adsorption on reduced nickel sites is a key step for CH₄ oxidative conversion. On an oxygen-rich surface, CH₄ conversion is low and the selectivity of CO₂ is higher than that of CO. With the consumption of surface oxygen, CO selectivity increases while the CO₂ selectivity falls. The conversion of CH₄ is small at 500°C when a pulse of CH₄/O₂ (CH₄:O₂=2:1) is introduced to the partially reduced catalyst, indicating that CH₄ and O₂ adsorption are competitive steps and the adsorption of O₂ is more favorable than CH₄ adsorption

Original language	English
Pages (from-to)	199-206
Number of pages	8
Journal	Catalysis Letters
Volume	27
Issue number	1-2
DOIs	https://doi.org/10.1007/BF00806993
Publication status	Published - Mar 1994

Scopus Subject Areas

Catalysis
General Chemistry

User-Defined Keywords

methane activation
NiO/AlO catalysts
pulse reaction

Access to Document

10.1007/BF00806993

Cite this

@article{b2b26e322c8a440a84d2168560543dac,

title = "Pulse studies of CH4 interaction with NiO/Al2O3 catalysts",

abstract = "Pulse studies of the interaction of CH4 and NiO/Al2O3 catalysts at 500°C indicate that CH4 adsorption on reduced nickel sites is a key step for CH4 oxidative conversion. On an oxygen-rich surface, CH4 conversion is low and the selectivity of CO2 is higher than that of CO. With the consumption of surface oxygen, CO selectivity increases while the CO2 selectivity falls. The conversion of CH4 is small at 500°C when a pulse of CH4/O2 (CH4:O2=2:1) is introduced to the partially reduced catalyst, indicating that CH4 and O2 adsorption are competitive steps and the adsorption of O2 is more favorable than CH4 adsorption",

keywords = "methane activation, NiO/AlO catalysts, pulse reaction",

author = "Au, {C. T.} and Hu, {Y. H.} and Wan, {H. L.}",

year = "1994",

month = mar,

doi = "10.1007/BF00806993",

language = "English",

volume = "27",

pages = "199--206",

journal = "Catalysis Letters",

issn = "1011-372X",

publisher = "Springer Netherlands",

number = "1-2",

}

TY - JOUR

T1 - Pulse studies of CH4 interaction with NiO/Al2O3 catalysts

AU - Au, C. T.

AU - Hu, Y. H.

AU - Wan, H. L.

PY - 1994/3

Y1 - 1994/3

N2 - Pulse studies of the interaction of CH4 and NiO/Al2O3 catalysts at 500°C indicate that CH4 adsorption on reduced nickel sites is a key step for CH4 oxidative conversion. On an oxygen-rich surface, CH4 conversion is low and the selectivity of CO2 is higher than that of CO. With the consumption of surface oxygen, CO selectivity increases while the CO2 selectivity falls. The conversion of CH4 is small at 500°C when a pulse of CH4/O2 (CH4:O2=2:1) is introduced to the partially reduced catalyst, indicating that CH4 and O2 adsorption are competitive steps and the adsorption of O2 is more favorable than CH4 adsorption

AB - Pulse studies of the interaction of CH4 and NiO/Al2O3 catalysts at 500°C indicate that CH4 adsorption on reduced nickel sites is a key step for CH4 oxidative conversion. On an oxygen-rich surface, CH4 conversion is low and the selectivity of CO2 is higher than that of CO. With the consumption of surface oxygen, CO selectivity increases while the CO2 selectivity falls. The conversion of CH4 is small at 500°C when a pulse of CH4/O2 (CH4:O2=2:1) is introduced to the partially reduced catalyst, indicating that CH4 and O2 adsorption are competitive steps and the adsorption of O2 is more favorable than CH4 adsorption

KW - methane activation

KW - NiO/AlO catalysts

KW - pulse reaction

UR - http://www.scopus.com/inward/record.url?scp=0001575329&partnerID=8YFLogxK

U2 - 10.1007/BF00806993

DO - 10.1007/BF00806993

M3 - Journal article

AN - SCOPUS:0001575329

SN - 1011-372X

VL - 27

SP - 199

EP - 206

JO - Catalysis Letters

JF - Catalysis Letters

IS - 1-2

ER -