Interaction of pyridine and ammonia with a sulfate-promoted iron oxide catalyst

Journal Article · Tue Oct 31 23:00:00 EST 1989 · Journal of Catalysis; (USA)

DOI:https://doi.org/10.1016/0021-9517(89)90249-2· OSTI ID:6783118

Lee, J S; Park, D S ^[1]

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1. Pohang Institute of Science and Technology, Pohang (Korea)

Interactions of sulfate-promoted iron oxide, SO{sup 2{minus}}{sub 4}-Fe{sub 2}O{sub 3}, with pyridine or ammonia were investigated by means of infrared spectroscopy and temperature-programmed desorption/reaction coupled with mass spectrometry. Both molecules reacted with the sulfate group upon adsorption followed by heating to change the structure of the sulfate group and the acid properties of SO{sup 2{minus}}{sub 4}-Fe{sub 2}O{sub 3}. They also promoted the decomposition of the sulfate group and its removal from the surface. These effects were more pronounced for pyridine.

• OSTI ID: 6783118
• Journal Information: Journal of Catalysis; (USA), Journal Name: Journal of Catalysis; (USA) Vol. 120:1; ISSN 0021-9517; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ADSORPTION
AMMONIA
AZINES
CATALYSTS
CATALYTIC CRACKING
CHALCOGENIDES
CHEMICAL REACTIONS
CONTROL
CRACKING
DECOMPOSITION
DEHYDRATION
DESORPTION
ESTERIFICATION
HETEROCYCLIC COMPOUNDS
HYDRIDES
HYDROGEN COMPOUNDS
INFRARED SPECTRA
IRON COMPOUNDS
IRON OXIDES
ISOMERIZATION
MASS SPECTROSCOPY
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PH VALUE
PROMOTERS
PYRIDINE
PYRIDINES
PYROLYSIS
SORPTION
SORPTIVE PROPERTIES
SPECTRA
SPECTROSCOPY
SULFATES
SULFUR COMPOUNDS
SURFACE PROPERTIES
TEMPERATURE CONTROL
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS