Influence of oxidation of Pd/Al sub 2 O sub 3 for the reactions of CO with NH sub 3 and formamide decomposition

Journal Article · Thu Dec 27 00:00:00 EST 1990 · Journal of Physical Chemistry; (USA)

DOI:https://doi.org/10.1021/j100389a020· OSTI ID:6111307

Paul, D K; Worley, S D ^[1]

---

1. Auburn Univ., AL (USA)

The reaction of CO with NH{sub 3} and the decomposition reactions for HNCO and formamide over Pd/Al{sub 2}O{sub 3} films have been investigated by infrared spectroscopy. The formation of isocyanate species (NCO) was observed during all of these reactions over preoxidized Pd/Al{sub 2}O{sub 3}, but not over prereduced surfaces. These NCO species were formed on Pd but spilled over to the Al{sub 2}O{sub 3} support. Palladium became reduced during the course of the reaction of CO with NH{sub 3}. A mechanism is proposed in which the reduction of Pd{sup {delta}+} and the formation of a Pd formamide species are key features.

• OSTI ID: 6111307
• Journal Information: Journal of Physical Chemistry; (USA), Vol. 94:26; ISSN 0022-3654
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
ALUMINIUM OXIDES
CATALYTIC EFFECTS
FORMAMIDE
DECOMPOSITION
PALLADIUM COMPLEXES
AMMONIA
CARBON MONOXIDE
EXPERIMENTAL DATA
INFRARED SPECTRA
MEASURING METHODS
OXIDATION
ALUMINIUM COMPOUNDS
AMIDES
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
COMPLEXES
DATA
HYDRIDES
HYDROGEN COMPOUNDS
INFORMATION
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
SPECTRA
TRANSITION ELEMENT COMPLEXES
330702* - Emission Control- Carbon Monoxide