| 摘要 |
A new metal-containing high siliceous porous crystalline material related to the structure of zeolite beta, a method of making same and the use thereof in catalytic conversion of organic compounds. The anhydrous form of the new metal-containing crystal has a calculated composition, expressed in terms of moles of anhydrous oxides per 100 moles of silica, as follows: (W)Q2O . (X)M2/nO . (y)L2O3 . 100 SiO2 wherein Q2O is the oxide form of an organic compound containing an element of Group 5-B of the Periodic Table, said organic compound having at least one alkyl or aryl group at least one of which is an ethyl, M is an alkali metal, W =<5, X =<2, Y=<4, and L = Al, Cr, Fe, or La and mixtures thereof, provided that at least one of Cr, Fe and La is present and Y is >zero. The new crystal is prepared from a reaction mixture comprising a source of silica, chromium and/or iron compounds and/or lanthanum oxide, a source of organic compounds of Group 5-B, having at least one ethyl group, and water, in the absence of any added alumna in the recipe. |
