NICKEL SILICA COMOSITION WITH HIGH NICKEL SURFACE AREA

摘要

1364658 Oxygen - removing compositions ESSO RESEARCH & ENG CO 6 Oct 1971 [6 Oct 1970] 46459/71 Addition to 1263132 Heading B1E [Also in Division Cl] Nickel-on-silica catalyst or oxygen-removing compositions of nickel surface area greater than 70 mSP2/SP/g, suitably 90-100 mSP2/SP/g and total surface area of 225 to 300 mSP2/SP/g are produced by forming an aqueous mixture of a source of nickel cations, a source of silicate ions and siliceous particles, precipitating nickel and silicon compounds onto the siliceous particles while ensuring that the concentration of dissolved nickel ions is less than 0.60 mole/litre, recovering the coated siliceous particles, calcining and heating in a reducing gas, e.g. hydrogen. The source of siliceous particles is suitably Kieselguhr.