| 摘要 |
<p>SYNTHESIS OF ZEOLITE ZSM-5, REACTION MIXTURE THEREFOR AND PRODUCT THEREOF A synthetic crystalline ZSM-5 zeolite material has the X-ray powder diffraction pattern substantially as set forth in Table I of the specification, and has, as synthesized and in the anhydrous state, a formula, in terms of mole ratios of oxide, as follows: (0.02-10) R2O : (0.1-2) M2/nO:(0.1-3.3)A1203: 100 SiO2 wherein R is represented by the formula: R" - O - R' - O- - wherein A is a cation having a valence m, R' is an inorganic or an organic acid moiety, and R" is a linear or branched aliphatic, aromatic or alkyl aromatic group, and M is an alkali metal or an alkaline earth metal having a valence n. The zeolite material is prepared from a reaction mixture which comprises sources of an alkali or alkaline earth metal, alumina, silica and an organic, anionic directing agent represented by the above formula and which has the following composition in terms of mole ratios of oxides: SiO2/A1203 = 30-1000 H2O/SiO2 = 2-1000 OH-/SiO2 = 0-10 M+/SiO2 = 0.01-3 R/SiO2 = 0.01-3 wherein M is an alkali or alkaline earth metal and R is the anionic directing agent, the reaction mixture being maintained at crystallization conditions until the crystals of the ZSM-5 zeolite are formed.</p> |
