Abstract: A catalyst useful for hydroprocessing a hydrocarbon-containing oil contains at least one hydrogenation component on an amorphous, porous refractory oxide. The catalyst is prepared by impregnating support particles having a narrow pore size distribution and a mode pore diameter from abpit 70 to 80 angstroms with a solution containing a precursor of the hydrogenation components, followed by drying and calcining. The catalyst is useful for promoting a number of hydrocarbon hydroprocessing reactions, particularly hydrogenative desulfurization, dedemetallization and denitrogenation, and most particularly, hydrodesulfurization of residuum-containing oils.

Abstract: In a supported catalyst for the preparation of monocarboxylic anhydrides by carbonylation of the appropriate esters or ethers, where, in the supported catalyst, an organosilicon compound is bonded, as a polyfunctional coupling agent, on the one hand to a support material and on the other hand to a noble-metal compound from group VIII of the Periodic Table of the Elements, the coupling agent is a chelate-forming organosilicon compound of the general formula ##STR1## where X=Cl, Br or --OR.sup.2 ;Y=--NR.sub.2.sup.4, a nitrogen-containing aryl radical, --PR.sub.2.sup.4, AsR.sub.2.sup.4, --SR.sup.4 or --SH;Z=zero, arylene or phenylene (optionally ortho-, meta- or para-substituted),R.sup.1 =C.sub.1 to C.sub.5 -alkyl;R.sup.2 =C.sub.1 to C.sub.5 -alkyl or --C.sub.6 H.sub.5 ;R.sup.3 =--H or C.sub.1 to C.sub.3 -alkyl;R.sup.4 =C.sub.1 to C.sub.6 -alkyl, C.sub.5 or C.sub.6 -cycloalkyl or --C.sub.6 H.sub.5 or --CH.sub.2 C.sub.6 H.sub.5, which are optionally substituted by halogen, methoxy, ethoxy or C.sub.1 to C.sub.