Haldor Topsoe A/s

Herman Teunissen

Jens Sehested

Claus J H Jacobsen

Michael Brorson

Thoa Thi Minh Nguyen

Eric O T&ouml;rnqvist

In a broad form the present disclosure relates to a stabilized catalyst support comprising in oxide form; aluminum, zirconium, and one or more lanthanoid elements taken from the lanthanoid group of the periodic system characterized in that at least a part of the aluminum is present as transition alumina such as &#x3c7;, &#x3ba;, &#x3b3;, &#x3b4;, &#x3b7;, &#x3c1; and &#x3b8;-alumina, characterized in the concentration of zirconium being at least 1.5 wt %, 5 wt % or 10 wt %, the concentration of lanthanoid being at least 0.5 wt %, 1.0 wt %, 2 wt % or 4 wt % and the combined concentration of zirconium and lanthanoid being at least 4 wt %, 7 wt % or 10 wt %, with the associated benefit of a support comprising transition alumina being a high surface area due to the small crystallites typical for transition alumina, and the benefit of the combined presence of oxides of zirconium and lanthanoid in the stated amounts being that at these levels these oxides stabilize the structure of the transition alumina.

Methanation process using stabilized catalyst support comprising transition alumina

Process for the preparation of a vanadium phosphate catalyst comprising treatment of a vanadium compound with formic acid, water and a phosphorus compound.

Process for the synthesis of VPO catalysts

Process for the preparation of ammonia from ammonia synthesis gas by contacting the synthesis gas with a bimetallic catalyst comprising a Group VIII metal combined with a Group VIB metal at conditions being effective in the formation of ammonia, wherein the bimetallic catalyst is in its nitride form during contact with the synthesis gas.

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Hillerød, Denmark

Herman Teunissen