By H. Steiner
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Extra info for Introduction to Petroleum Chemicals. Based on Lectures Given at the Manchester College of Science and Technology
One is to find a suitable material of construction for the reactor itself capable of withstanding aqueous acidic chloride solutions at a pH between - 1 and + 2 . A second problem is the design of a reactor suitable for this exothermic reaction. From the first two reactions of Fig. 6 it is evident that the reaction could be carried out in two stages, or in one stage, and with air or oxygen as the oxidizing agent in an aqueous medium. There is also the possibility of reacting ethylene, oxygen, and water in the gaseous phase over a solid catalyst containing palladiumchloride.
Reports (17,18). L who have operated a plant since 1951. Their capacity has now reached 45,000 tons per year of azeotrope strength isopropanol (19). The process is also operated in Europe by Montecatini. The two reactants propylene and water are preheated and reacted under a pressure of 250 atm over a pelleted catalyst; patents mention an operating temperature range of 250-290°C and a molar ratio of water to propylene of 2 5 to 1. Unreacted propylene is recycled. The space velocity recom mended is 0 8 to 1 kg of propylene per hour per litre of catalyst space.
SALT can decompose further depending on its environment to give from cumene, phenol and acetone, or alternatively acetophenone and phenyldimethylcarbinol, very little aromatic acid being produced. g. acetic acid), a diisopropylbenzene will give good yields of the corresponding dibasic acid. Several steps are involved in this conversion and these occur at differing velocities. Intermediary compounds are isopropylacetophenone, isopropylbenzoic acid, diacetyl benzene and acetylbenzoic acid. A catalyst comprising cobalt and manganese acetates is used at tempera tures of 12O-150°C with sufficient pressure to maintain liquid phase con ditions.