La pression comme supplément de la température dans le phénomène de l'inflammation

Spring, W. Archives Neerlandaises des Sciences Exactes et Naturelles (1901), 6(ii), 257-61; SciFinder (Chemical Abstracts Service: Columbus, OH); https://scifinder.cas.org (accessed July 8, 2010).

No combination took place on subjecting an intimate mixture of 2 mols. of cupric oxide and 3 mols. of sulphur to a pressure of 10,000 atmospheres. Combination took place violently when the pressure on a mixture of 2 mols. of cuprous oxide and 3 mols. of sulphur rose to 8000 atmospheres; the pressure was increased gradually so that no heating by compression took place. Sulphur dioxide was formed and the residue consisted only of cuprous sulphide (2Cu2O + 3S = 2Cu2S + SO2). The ignition temperature of this mixture at the ordinary pressure is about 126°, and pressure to the extent of 8000 atmospheres has the effect of lowering this by more than 100°. The ignition temperature of the mixture of cupric oxide and sulphur could not be determined for the sulphur inflamed at 250°, but it must be higher than this. It would appear that the point of inflammation is a function of the pressure, and the experiments are being continued to ascertain if this is quite general.

Reprinted with the permission of the American Chemical Society. Copyright © 2010. American Chemical Society (ACS). All Rights Reserved.