ISSN:
0030-493X
Schlagwort(e):
Chemistry
;
Analytical Chemistry and Spectroscopy
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
Notizen:
An ‘on-line’ mass spectrometer technique which permits the examination of the effects of radiation at short times has been used to study the radiolysis of methane by reactor radiation. The mass spectrometer used was the AEI MS-10. The experiments were carried out using the UTR-100 reactor at East Kilbride and the results using highly purified methane and methane with radical scavangers are described. With pure methane at 0·25% conversion, G-values of 0·36, 0·24, 0·07 and 0·03 were calculated for C3H8, C4H10, C5H12 and C6H14 respectively. No pressure-dependent reactions were observed in the pressure range 50 to 135 torr. The effects of radical scavengers were investigated and irradiation of methane containing 1 to 2% ethylene gave G-values for C2H6, C3H8, n-C4H10, iso-C4H10, C5H12 plus C6H14, C2H2, C3H6, C4H8 and C5H10 of 1·33, 2·02, 2·03, 0·35, 0·34, 0·30, 0·37, 0·90 and 0·31. The effects of adding 1 to 2% propylene and 1 to 2% oxygen were also examined and the results are described in the paper. Experiments with smaller quantities of oxygen emphasize the importance of removing all oxygen from the system before radiolysis begins. The paper then goes on to discuss in some detail the processes involved in the radiolysis of methane and concludes with suggestions for future work.
Zusätzliches Material:
4 Ill.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/oms.1210010404
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