Rational design and HT techniques allow the synthesis of new IWR zeolite polymorphs.
By combining a rational design of structure directing agents and high throughput and data mining techniques, it has been possible to obtain Ge-free ITQ-24 as pure silica as well as borosilicate polymorphs up to a Si/TIII ratio of 10. Al can be exchanged by B giving strong acid materials. Also, the availability of the pure silica material allows one to determine more precisely the crystal symmetry. This work opens the possibility to synthesize the Ge-free polymorphs of a large number of new germanosilicate structures reported in the last five years. This certainly will increase their possibilities for industrial application.
Cantín
Angel
A
Instituto de Tecnología Química (UPV-CSIC), Universidad Politécnica de Valencia, Spain.
Corma
Avelino
A
Diaz-Cabanas
Maria J
MJ
Jorda
Jose L
JL
Moliner
Manuel
M
D005857:Germanium / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D011725:Pyridines / Q000737:chemistry; D012822:Silicon Dioxide / Q000737:chemistry; D014961:X-Ray Diffraction; D017641:Zeolites / Q000138:chemical synthesis* / Q000737:chemistry
D011725:Pyridines; D005857:Germanium; D017641:Zeolites; D012822:Silicon Dioxide