of teos tpaoh al i pro 3 etoh and nh 3 as in example 2 d were used to synthesize zsm 5 mgo the xrpd of the product showed the presence of zsm 5 with a crystal size of approximately 190 u00e5 mgo porous support was removed from zsm 5 mgo synthesised as in example 4 by acid hydrolysis with 2m hno 3 at 80 u00b0 c for 2 hours the zsm 5 was filtrated washed with water until the ph of the washing water reached 6 7 and dried at 110 u00b0 c for 3 hours xrpd of the product showed zsm 5 with a crystal size of 204 u00e5 confined space synthesis of sodalite sod in u03b7 al 2 o 3 was performed as follows 1 kg of 5 wt sio 2 in u03b7 al 2 o 3 htas b 20 haldor tops u00f8e a s calcined at 550 u00b0 c was impregnated with 2 5 l 2 m naoh solution the alumina was dried at 110 u00b0 c for 2 hours and transferred to a ptfe lined beaker within a stainless steel autoclave containing some water in order to avoid excess evaporation from the gel the autoclave was heated at 120 u00b0 c for 18 hours the product was washed thoroughly.