Imperial Chemical Industries Limited

Johan H Maat

Peter J Davidson

Terence Thistlethwaite

The tendency of sintered iron oxide articles, particularly those wherein the iron oxide in the sintered article is in the form of haematite, containing a minor proportion of calcium oxide to cracking on reduction of the iron oxide to iron is increased by the incorporation of a minor amount of magnesium aluminate spinel into the iron oxide composition.

Catalyst of a sintered iron oxide-containing article

A bed packing material, e.g. for use as a catalyst precursor, in the form of regular, preferably cylindrical, units having a multiplicity of through passages of small cross section so that the units have a low voidage, GV, a high ratio of the geometric surface area, GSA, to the volume V, of the equivalent cylindrical unit having no passages, and a high ratio of GSA to the product of GV and the surface area, A, of the equivalent cylindrical unit having no passages.

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Stockton-on-Tees, United Kingdom

Johan H Maat