Studies on Diarylmethanes (Part 8)

Abstract

Summary: The catalytic hydrocracking of diarylmethane using 2, 5, 3'-trimethyldiphenylmethane (TMDPM) as a model compound was studied with a flow system at atmospheric pressure.MoO3-Al2O3 was found to be the most selective catalyst for the fission between methylene group and aryl groups in the preliminary studies on various catalysts. The effect of the calcination temperature, MoO3 content, the reduction time, and the addition of a third component on MoO3-Al2O3 was studied in detail.Results can be summarized as follows; 1. The catalytic activity was constant showing a maximum value at the calcination temperature range from 2. The catalytic activity and the ratio of fission (b/a) between the methylene group and two aryl groups increased with MoO3 content until it reached approximately 17wt%. However, further increase in the MoO3 content showed no effect any longer.