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A series of high silica CHA zeolites with a true single parameter variation has been synthesized, where only the Si/Al ratio changes, using N,N,N-1-trimethyladamantammonium hydroxide as the structure directing agent in fluoride media. The materials have been synthesized with high crystallinity, and with a Si/Al ratio ranging from 20 to infinity, i.e. pure SiO 2 . Powder XRD shows that the...
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