1779. JOHNSON, H. L., AND STUART, A.P. (Sun Oil Co.). Hydrogenation Catalyst Containing Molybdenum Disulfide. United States Patent 2,649,419. Aug. 18, 1953. Chem. Abs., vol. 47, 1953. p. 11,604.

PATENTS

1779. JOHNSON, H. L., AND STUART, A. P. (Sun Oil Co.). Hydrogenation Catalyst Containing Molybdenum Disulfide. United States Patent 2,649,419. Aug. 18, 1953. Chem. Abs., vol. 47, 1953, p. 11,604.

Catalyst having good mechanical strength and high efficiency for efficient use in hydrogenation is formed from Fe oxide, TiO₂, SiO₂, Al₂O_3, and a small amount of volatile matter. It is impregnated with an aqueous solution of (NH₄)₂MoO₄ (I). H₂O is expelled by gentle heating and the resulting mass treated with H₂S to convert the (I) to (NH₄) ₂ MoS₄ and the Fe to Fe sulfide. It is then heated to 300º in an atmosphere of H₂ to convert the thiomolybdate to the disulfide. The final composition contains in %: MoS₂ 21.0, Fe sulfide (calculated as Fe₂O₃), 10.7; SiO₂, 6.1; TiO₂, 2.4; Al₂O₃, 55.5; and volatile matter, principally H₂O, 4.3.