## Abetract-Experiments on the oxidation of short tubes of graphite in air (I-\*) have been \_ \_ extended to long channels of graphite where the oxygen is depleted as it flows through the chzumel. The theory of reaction in porous solids which was developed for the earlier work has been extended t
110. Air oxidation studies in a long graphite channel
โ Scribed by P Hawtin; J.A Gibson; R.A Huber
- Publisher
- Elsevier Science
- Year
- 1968
- Tongue
- English
- Weight
- 113 KB
- Volume
- 6
- Category
- Article
- ISSN
- 0008-6223
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โฆ Synopsis
From an examination of a number of graphites using helium pycnometry, vapor pressure measurements, metallography, and the repeated intrusion and distillation of mercury, it was concluded that the results of mercury porosimetry measurement above some critical pressure range often reflect the effect of the measurement as well as the existing porosity. A method employing small-particle statistical techniques developed by Lewis and Goldman") was applied to porosity measurements and numerical descriptions of the pore size distributions were obtained. Both lognormal and non-functional models were employed and examples are given for a number of graphites. * Work performed under the auspices of the United States Atomic Energy Commission. 1. LEWIS H. D. and GOLD,~AN A., LA Report-3656.
๐ SIMILAR VOLUMES
Studies into the oxidation of coals and other substances in contact with air were initiated in 1957, as a result of mine fires and by burning coal and waste heaps. The studies involved determining the conditions under which spontaneous ignition would occur.
The radiolytic oxidation of graphite in carbon dioxide cooled nuclear reactors is of great practical importance, but direct measurements of the oxidation of pores are very difficult. Progress has recently been made by studying the changes in permeability of graphite and the diffusivity ratio with ox