| 摘要 |
A method for producing large crystal zeolite ZSM-5 having an average particle diameter between 1 and 100 microns from a reaction mixture of alumina, silica, alkali metal oxide, water and tetraalkylammonium compounds, including an added mixed ammonium ion wherein the initial OH<->/SiO2 ratio is controlled between about 0.01 and 0.5 and the ratio of added mixed ammonium ion to SiO2 is between about 0.01 and 1.0. |
