Solid phosphoric acid catalyst and processes for its preparation and for its use.

摘要

Process for the preparation of a solid catalyst based on phosphoric acid comprising: mixing an inorganic support containing silica, with phosphoric acid; forming the material into pellets; calcining the pellets; characterized in that, after calcination, the catalyst is cooled to a temperature of between 80 DEG C and 180 DEG C and subsequently treated with a mixture of air and water vapour.