PATENT

3711. ----- [SUMERFORD, S. D.]  (Standard Oil Development Co.).  Treatment of Solid Diluent in Hydrocarbon Synthesis Process.  United States Patent 2,471,913, May 31, 1949; appl. filed Feb. 27, 1947, Serial No. 731,406; 3 claims (Cl. 260-449.6).  Chem. Abs., vol. 43, 1949 p. 7214.

Catalyst fluidity in  Fischer-Tropsch synthesis may be maintained by use of sand, pretreated with acid, as diluent.  HCl is preferred, but H₂SO₄ or HNO₃ may be used for the pretreatment.  6 United States patents cited.

See abs. 2566.