Infrared spectra of some nonreduced methanation catalysts

Journal Article · Fri Sep 01 04:00:00 EDT 1978 · Appl. Spectrosc.; (United States)

DOI:https://doi.org/10.1366/000370278774330982· OSTI ID:6578114

Bradley, E B; Stencel, J M

The infrared spectra (4000 to 400 cm/sup -1/) of two commercial nonreduced methanation catalysts have been recorded and interpreted. The catalyst are prepared as mixtures of (a) nickel in a silica support and (b) nickel in an alumina support. Graphite is added to these mixtures as a binder to facilitate pressing of catalyst pellets for commercial use. It is revealed in the spectra of the catalysts that although (a) is prepared to have a simple NiO/Sio/sub 2/ composition the silica support is not of the form SiO/sub 2/; rather the spectral characteristics are similar to those found for linear chain silicates. In (b) the Al-O vibrations are characteristic of amorphous Al/sub 2/O/sub 3/, and H/sub 2/O is tightly bound in the pellet. The CO/sub 3//sup ion is present in both (a) and (b). It is not bound to Ni in either (a) or (b), but it is bound in the silicate structure of (a) and associated with Al in (b). The presence of the ion cannot be explained by only n situ generation from atmospheric CO/sub 2/ and H/sub 2/O, but its presence must be due to residual CO/sub 3//sup from the catalyst preparation.

• Research Organization: Department of Electrical Engineering and Institute of Mining and Minerals Research, University of Kentucky, Lexington, Kentucky 40506
• OSTI ID: 6578114
• Journal Information: Appl. Spectrosc.; (United States), Journal Name: Appl. Spectrosc.; (United States) Vol. 32:5; ISSN APSPA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ABSORPTION SPECTRA
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CATALYSTS
CHALCOGENIDES
CHEMICAL REACTIONS
CRYSTAL STRUCTURE
INFRARED SPECTRA
METHANATION
MINERALS
NICKEL COMPOUNDS
NICKEL OXIDES
OXIDES
OXYGEN COMPOUNDS
SILICA
SILICON COMPOUNDS
SILICON OXIDES
SPECTRA
TRANSITION ELEMENT COMPOUNDS