Patent ID: 8557220

Claim:
A process for preparing an EU-1 zeolite having a XO 2 /Y 2 O 3 ratio in the range 10 to 100, comprising: a) mixing, in an aqueous medium, at least one source of at least one oxide XO 2 , X being silicon and/or germanium, at least one source of at least one oxide Y 2 O 3 , Y being aluminium, iron, gallium and boron, and at least one organic template Q, said reaction mixture having the following molar composition: XO 2 /Y 2 O 3 10 to 100; OH − /XO 2 0.1 to 6.0; (M + + Q)/Y 2 O 3 0.5 to 100; Q/(M + + Q) 0.1 to 1; H 2 O/XO 2 1 to 100; M + /XO 2 0 to 0.15; where M + represents an alkali metal or ammonium monovalent cation; b) drying the reaction mixture derived from a) at a temperature of less than 200° C.; c) hydrothermal treatment of the dried reaction mixture derived from b) in an autoclave, said dried reaction mixture not being in contact with a liquid phase at the bottom of the autoclave, whereby EU-1 zeolite is produced.