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8684900 
Journal Article 
Formation of Butadiene by Cracking of Hydrocarbons 
Frolich, PK; Simard, R; White, A 
1930 
0 
Industrial & Engineering Chemistry
ISSN: 0019-7866 
22 
3 
240-241 
English 
Experiments are described which show that butadiene may be formed from propane, butane, and cyclohexane by cracking at high temperature, thus substantiating the claims made in recent patents. In the case of propane the highest yield obtained corresponds to about 1 mol of butadiene per 100 mols of propane, and the indications are that this is close to the maximum conversion obtainable by simple cracking. With propylene and butane the highest yields observed are slightly more than 3 mols of the diolefin per 100 mols of hydrocarbon, but in view of the incomplete survey of the experimental conditions there still remains a possibility of increasing these conversion figures. A single experiment on the cracking of cyclohexane gave 20.6 mols of butadiene per 100 mols of cyclohexane reacting. The results also throw light on the mechanism of production of aromatics from paraffins in that they point to the formation of diolefins as intermediates in the process. 1930, American Chemical Society. All rights reserved.