The synthesis of diethylaniline from aniline and ethanol in the presence of various acids as catalysts has been carried out under pressure. Hydrochloric and sulfuric acids have been found to be superior in catalytic activity compared to hydrobromic, hydroiodic, and phosphoric acids. Under optimum conditions, the conversion of aniline to diethylaniline is found to be 59.39% with sulfuric acid and 65.96% with hydrochloric acid. This paper deals with the rate of oligomerization of 2-methyl-2-butene in H2S04-H20 and H2S04-H~P04-H20 mixtures. Tertiary amylene dimers are the major reaction products with minor amounts of C7's, C9's, and higher boiling hydrocarbons. The oligomerization rate follows first-order kinetics over the temperature range 80-120°F and for 2-methyl-2-butene concentrations of 6.7-16%. The oligomerization rate increased with acid concentration. The activation energy and frequency factor for the H2S04-H20 mixtures were correlated with the Hammett acidity function.

in situ oil followed trends similar to those found for hydrocracked gas-combustion shale oil. It also resembled trends previously reported for raw shale oil. AcknowledgmentsThe work upon which this report is based was done under a cooperative agreement between the Laramie Energy Research Center, U.S. Energy Research and Development Administration, and the University of Wyoming. The author expresses his thanks to Mr. Howard B. Jensen under whose supervision the nitrogen analyses were made.

Die Abhängigkeit der Umsetzung von Phenol (I) und Anilin (II) zu Diphenylumin (III) von Katalysatoren wie Mineralsäuren und Lewissiiuren sowie von Druck, Temperatur und Verweilzeit wird untersucht.

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Anilin (I) setzt sich mit Äthanol (II) in Gegenwart von Säuren unter Druck zu Diäthylanilin (III) um.