Wer ist's? — Ernst Terres

Sorption of Water Vapor by Thermally Treated Lignite at Different Relative Humidities.

“…Several investigators, among them Klein (6) and more recently Terres (16), showed that thermal treatment above t h e temperature required t o initiate decarboxylation in addition t o removal of t h e normally considered moisture r e sulted in artificial coalification or an accelerated metamorphism which advances somewhat t h e rank of t h e solid fuel treated. Kube (8) exposed samples of North Dakota lignite which had been thermally treated at various temperatures t o 950" F. in an atmosphere saturated with water vapor at room temperature, and reported that differences in resorption of water vapor existed, depending upon t h e treating temperature.…”

Prediction of the Hydrogen Content of Petroleum Fractions

“…1997, 36, 2500-2504 unfortunately suffers from serious restrictions in its applicability and marked deviations in predicted aromatic carbons. Importantly now, the implication of the fact that both methods aim to predict the carbon type distribution of the average molecule is that the hydrogen content of an oil fraction must have a high correlation with n, d, and M. We have therefore arrived at the idea to replace the direct hydrogen balance in the original equations of Hrapia by a molar refractivity balance (Mn/d), also inspired by the valuable work of Terres (1958), who demonstrated that n/d versus the reciprocal carbon number is quite specific for a hydrocarbon class. Combined with a suitable (regressed) expression for the molecular weight as a function of the carbon type only, one can then in principle solve the equations for explicit expressions of the carbon type as functions of n, M, and d, rendering the general form with c 1,2,3,4 as fitting constants.…”