Haldor Topsoe A/s

Per Zeuthen

Darrell D Whitehurst

Michael Brorson

Joachim Harteg Jacobsen

Barry H Cooper

Lars Pleth Nielsen

Steffen Vissing Christensen

Kim Gr&oslash;n Knudsen

Process for the catalytic hydrotreating of a hydrocarbon feed stock containing silicon compounds by contacting the feed stock in presence of hydrogen with a hydrotreating catalyst at conditions to be effective in the hydrotreating of the feed stock, the improvement of which comprises the step of moisturising the hydrotreating catalyst with an amount of water added to the feed stock between 0.01 and 10 vol %.

Process for the catalytic hydrotreating of silicon containing naphtha

Described herein is a combined process for improved hydrotreating of diesel fuels, in which the feed to be hydrotreated is pretreated with a selective adsorbent prior to the hydrotreating step to remove polar materials, especially nitrogen containing compounds (N-compounds). The selective adsorption process can employ either liquid or solid adsorbents. After contact of the adsorbent with the diesel fuel feed, the adsorbent containing undesired polar compounds is separated from the diesel fuel. The separated adsorbent is then subjected to a two step procedure for regeneration.

Combined process for improved hydrotreating of diesel fuels

A catalyst for ring opening of cyclic organic compounds comprising, on a carrier of alumina, silica, zirconia and mixtures thereof, from 0.1 to 10% by weight based on the total weight of the catalyst of a catalytic active metal selected from platinum, palladium, rhodium, rhenium, iridium, ruthenium, nickel, cobalt and mixtures or combinations thereof and from 0.01 to 20% by weight based on the total weight of the catalyst of a metal modifier selected from tungsten, molybdenum lanthanum and rare earth metals and mixtures and combinations thereof.

Catalysts and process for ring opening of cyclic compounds

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Allerød, Denmark

Per Zeuthen