申请人:Cao Guang
公开号:US20080071128A1
公开(公告)日:2008-03-20
The present invention relates to new methods of making crystalline materials isostructural to ITQ-21, as well as to new crystalline materials obtainable by such methods, and their use in hydrocarbon conversion processes. In one of its aspects, the invention relates to a method of making a crystalline material iso-structural to ITQ-21, the method comprising:
(a) providing a synthesis mixture comprising water, at least one source of germanium, at least one source of a tetravalent element X other than germanium, at least one structure directing agent R, optionally at least one source of trivalent element Y and optionally at least one source of fluoride, wherein the structure directing agent R is a compound of formula C
1
C
2
R
1
R
2
N
+
A
−
(I), in which
C
1
and C
2
each independently represent a substituted or unsubstituted cyclohexyl or cyclopentyl group,
R
1
and R
2
each independently represent a methyl group, an ethyl group or a propyl group, or R
1
and R
2
together with the nitrogen atom they are connected to form a ring containing 5 or 6 atoms, and
A represents hydroxyl, fluorine, chlorine, bromine or iodine,
(b) forming said crystalline material from the synthesis mixture;
(c) recovering said crystalline material.