𝔖 Bobbio Scriptorium
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Action de l'air entre 25° et 620°C sur un ‘noir active’

✍ Scribed by F.M. Lang; M. de Noblet; M. Brie


Publisher
Elsevier Science
Year
1969
Tongue
English
Weight
931 KB
Volume
7
Category
Article
ISSN
0008-6223

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✦ Synopsis


A highly reactive product is obtained from spheron 6 purified in chlorine at 18WC, oxidised by air at 620°C and finally degassed under vacuum or in a current of argon at 900°C. This product is placed in contact with air under atmospheric pressure, at. temperatures between 25°C and 620°C; when the surface complexes thus formed are thermally destroyed in a current of argon or under vacuum, CO and COz appear in well-defined temperature zones; it seems reasonable to suppose that the action of the air takes place through the agency of'at least two rypes of active sites.


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