An x-ray photoelectron study of metal clusters in zeolites

Journal Article · Thu Jun 15 04:00:00 EDT 1989 · Journal of Physical Chemistry; (USA)

DOI:https://doi.org/10.1021/j100349a047· OSTI ID:6823335

Andersson, S L.T. ^[1]; Howe, R F ^[2]

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1. Lund Univ. (Sweden)
2. Univ. of Auckland (New Zealand)

The adsorption and decomposition of the volatile carbonyl complexes Mo(CO){sub 6}, Fe(CO){sub 5}, Co{sub 2}(CO){sub 8}, and Co(CO){sub 3}NO in various zeolites has been studied by XPS. Mo(CO){sub 6} produces highly dispersed zerovalent clusters in zeolites NaY, NaX, and KL, and a mixture of oxidized species in LaY. Fe(CO){sub 5} produces initially zerovalent clusters in NaY, but these migrate to the external surface on heating to higher temperatures. Migration of iron out of the zeolite is inhibited by exchanging divalent cations Co{sup 2+} and Ni{sup 2+} into the zeolite. Co{sub 2}(CO){sub 8} decomposes extensively on the external surface of NaY and NaX, but the mononuclear complex Co(CO){sub 3}NO is readily adsorbed into NaY; decomposition produces a mixtures of zerovalent and oxidized cobalt species.

• OSTI ID: 6823335
• Journal Information: Journal of Physical Chemistry; (USA), Journal Name: Journal of Physical Chemistry; (USA) Vol. 93:12; ISSN 0022-3654; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360100 -- Metals & Alloys
360102 -- Metals & Alloys-- Structure & Phase Studies
360104 -- Metals & Alloys-- Physical Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ADSORPTION
CARBONYLS
CHEMICAL REACTIONS
COBALT
DATA
DATA ANALYSIS
DECOMPOSITION
ELECTRON SPECTROSCOPY
ELEMENTS
EXPERIMENTAL DATA
INFORMATION
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
IRON
MATERIALS
MEASURING INSTRUMENTS
MEASURING METHODS
METALS
MINERALS
MOLYBDENUM
NUMERICAL DATA
PHOTOELECTRON SPECTROSCOPY
SORPTION
SPECTROSCOPY
TRANSITION ELEMENTS
ZEOLITES