We plan to conduct experiments on the interaction of benz[b]anthracene, triphenylene and coronene on Raney Ni. The experiment aims at understanding the fundamental motions of these molecules on the nickel surface by QENS in conjunction with molecular dynamics studies. Similar molecules have been studied on graphite, but the only QENS study involving organic molecules on metals that the authors are aware of is their own. (See summary of previous beam time) We hope to provide new insights on the interaction of PAHs with catalysts.