| 摘要 |
1,263,589. Hydrocarbon conversion catalysts. INSTITUT FRANCAIS DU PETROLE DES CARBURANTS ET LUBRIFIANTS. 28 Oct., 1969 [31 Oct., 1968], No. 52776/69. Heading B1E. [Also in Division C5] A solid catalyst comprising H 3 PO 4 on a SiO 2 - containing carrier is made by (a) heating a mixture containing SiO 2 and at least 60% by weight of H 3 PO 4 at 650-1000‹C to obtain a composition in which the molar ratio P 2 O 5 :SiO 2 is less than 1:1 and then (b) activating the composition by contacting it with steam at 100- 300‹C. The SiO 2 source is preferably diatomaceous earth containing less than 6% Na 2 O, K 2 O, CaO, MgO and Fe 2 O 3 . Al 2 (SiO 3 ) 3 may be used instead but is less desirable. |
