| 摘要 |
1277749 Silica/alumina catalyst UNIVERSAL OIL PRODUCTS CO 2 Sept 1969 [18 Sept 1968] 43372/69 Heading B1E [Also in Division C5] A catalyst for the transalkylation or disproportionation of toluene is prepared by heating a crystalline aluminosilicate having a SiO 2 to Al 2 O 3 ratio of 6 to 12 and pore openings of 3 to 8Š in admixture with an alumina sol, separating excess sol from the heated mixture, gelling, washing and recovering the mixture. The aluminosilicate must have not been previously heated in excess of 200‹C. |
