| 摘要 |
A crystalline aluminosilicate having its anhydrous state a formula expressed in terms of mol ratios as follows: xQ:0.01 - 0.1 M2/nO:0-0.08 Z2O3:SiO2:0.0001 - 0.5 MeS, wherein: Q is an organic nitrogen compound; Z is aluminium, boron, gallium or mixtures thereof; x is between 0 and 0.5; M is at least one metal cation of valance n; and Me is at least one of the metals which form an insoluble sulfide compound. |
