The conclusion is further supported by Table , which shows that doubling Ru loading on TiO2-A-SG does not increase the PP conversion but makes the product distribution more resemble hydrogenolysis (Figures S3d and S3e compared to Figures and, respectively), i.e., higher Ru loading leads to slower hydrocracking. Since the alkane dehydrogenation step over Ru is not equilibrated, more Ru would increase hydrocracking rate if hydrogenolysis did not interfere with it. Thus, the lower hydrocracking rate reflects that it is suppressed by the faster hydrogenolysis on larger Ru particles. Scheme 1. Mechanistic scheme of the dual-pathway PP upcycling over M/TiO2-A-SG catalysts.