The stability of 1,4-dioxane, tetrahydrojurun und ethanol under hydrogenation conditions was investigated over six dgerent catalysts. The reactions occurring in a $.xed-bed reactor in the temperature runge between 150 and 350°C were characterized by chemical analysis of the reactor ej'luent streum und by measurement of the temperature-time profiles within the catalyst bed. On nickel catalysts, dioxune showed a runaway reaction with ignition at about 190°C (Mozingo, Org. Synth., 21 (1941)). (Ignition is rekrre…
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