Effect of the specific surface of platinized aluminum silicate on the conversion of nonane

Summary

• 1. An investigation was made of the catalytic properties of a series of platinum-aluminum silicate catalysts containing 1% of platinum in the transformations of nonane at 360°, 400°, and 440° under a hydrogen pressure of 20 arm in a flow system as a function of the specific surfaces of the catalysts.

• 2. Under the given conditions the nonane underwent various complex transformations, and the character and extent of these transformations were to a considerable extent determined by the temperature of the experiment and the specific surface of the catalyst.

• 3. Reduction in the specific surface of the catalyst led to reduction in hydrocracking power. This made it possible to carry out the transformations of nonane at higher temperatures, which favored higher yields of isomeric C₉ paraffins. Also, rise in temperature favored increased yield of aromatic hydrocarbons.

• 4. Withacatalyst of specific surface 30 sq. m/g at 440°, 31% of isomeric C₉ paraffins and more than 10% of aromatic hydrocarbons could be obtained.