Catalytic hydro-desulphurisation and hydro-denitrification - using catalyst prepd. by impregnating carrier with precursors for Gp=VIII metal and phosphorus components and treating with hydrogen

摘要

Hydrocarbon feeds are hydro-desulphurised and/or hydro-denitrogenised by contact with H2 at raised temp. in presence of a catalyst comprising a carrier and (a) a P component and (b) a hydrogenation component comprising a Gp. VIII metal. Components (a) and (b) are applied by impregnating the extruded or compacted carrier with effective amts. of precursors of (a) and (b) either (i) simultaneously or (ii) in sequence, and treating the material with a gas contg. H2 at raised temp., (i) after the impregnation or (ii) (1) during and/or after the last impregnation step when using a gaseous precursor for (a), or (2) after the last impregnation step when using a non-gaseous precursor.