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2004
Aluminum
I 2100
44- 024
Ionic Liquids and Eutectic Mixtures as Solvent and Template in Synthesis of
Zeolite Analogues. — The synthesis of different aluminophosphate zeolite analogues
using 1-ethyl-3-methyl imidazolium bromide or a choline chloride/urea eutectic mixture as both solvent and template is demonstrated. Because of the vanishingly low vapor pressure of ionic liquids, synthesis takes place at ambient pressure, eliminating
safety concerns associated with high hydrothermal pressures. The ionic liquid can also
be recycled for further use. The structures of (II) (triclinic, space group P1; novel structure type), (III) (orthorhombic, Pna21, Z = 4; novel zeotype), (IV) (orthorhombic,
Ibm2; AlPO-11 type), and (V) (triclinic, P1; AlPO-34 type) are determined by single
crystal XRD. — (COOPER, E. R.; ANDREWS, C. D.; WHEATLEY, P. S.; WEBB, P.
B.; WORMALD, P.; MORRIS, R. E.; Nature (London, UK) 430 (2004) 7003,
1012-1016; Sch. Chem., Univ. St. Andrews, St. Andrews, Fife KY16 9ST, UK; Eng.)
— W. Pewestorf
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