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    CATALYSTS

    for optimal performance

    TK-753

    TK-753 is a transition catalyst in fixed-bed resid hydrodesulfurization (HDS) systems. In such applications, it would be preceded by a hydrodemetallization (HDM) type catalyst and followed by a HDS-type catalyst (like TK-773). TK-753 exhibits good HDS activity and HDM selectivity. The pore size distribution and pore volume have been optimized, resulting in a high capacity for uptake of nickel and vanadium and a low bulk density.