B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 37/08 (2006.01) B01J 21/06 (2006.01) B01J 21/08 (2006.01) B01J 21/16 (2006.01) B01J 27/16 (2006.01) B01J 35/10 (2006.01) C07C 29/04 (2006.01)
Patent
CA 2062658
The invention relates to a process for the preparation of a catalyst from clay minerals and silica gel for the hydration of olefins having 2 to 3 C atoms to give the corresponding alcohols by means of phosphoric acid applied to the carrier, by two-stage acid treatment of this essentially montmorillonite-containing clay, which is contaminated with not more than 3% of accompanying materials, such as quartz, feldspar and mica, and may contain up to 0.5% of K2O, and optionally shaping and calcination between both acid treatments, in which 20 to 40 parts, based on the total dry substance, of fine- particled silica gel are added in a first stage to the clay which is acid-treated to 10-20% by weight, preferably 13-18% by weight, of Al2O3 and has a specific surface area of 200 to 400 m2/g, preferably 240 to 300 m2/g, the mixture is then shaped at a total water content of 40 to 60% by compression and is calcined at 500 to 900°C, and the shaped carrier is then treated in a second stage with acid until it has an Al2O3 content of 1 to 4% by weight, preferably 1 to 2% by weight, and a specific surface area of 180 to 250 m2/g, preferably 200 to 220 m2/g, and a pore volume of between 0.8 and 1.5 ml/g,preferably of 0.9 to 1 ml/g, and the carrier thus obtained is impregnated with phosphoric acid in a known manner, the fine-particled silica gel to be admixed essentially having a particle size distribution of between 30 and 60 ~ 10 -6 m, a pore volume of 0.9 to 1.7 ml/g, preferably 1 to 1.2 ml/g, and a specific surface area of 200 to 500 m2/g, preferably 380 to 400 m2/g, which is characterised in that, in the first stage, 1.5 to 2.5 parts, based on the total dry sub- stance, of titanium dioxide are added in addition to the silica gel prior to shaping and compression.
Baumeister Franz-Josef
Schlueter Dietrich
Schubert Klaus-Peter
Fetherstonhaugh & Co.
Huls Aktiengesellschaft
Sasol Solvents Germany Gmbh
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