containing nickel, cobalt, chromium, molybdenum, or tungsten metals, or compounds thereof

Full Title

Treatment of hydrocarbon oils, in the presence of hydrogen or hydrogen-generating compounds, not provided for in a single one of groups C10G45/02, C10G45/32, C10G45/44, C10G45/58 or C10G47/00 > characterised by the catalyst used > containing nickel, cobalt, chromium, molybdenum, or tungsten metals, or compounds thereof