Abstract
A solid-state ion-exchange method is described that introduces vanadium into zeolites BZSM-5, BBeta and their deboronated by washing forms at 773 K in hydrogen. Two types of vanadium species (vanadium ions in cationic position and VO 2+ complex in a silanol nest) are identified when the amount of V 2O 5 is equivalent to the framework boron. The vanadium-loaded samples have been characterised by the methods of IR-KBr, FTIR and UV-Vis spectroscopies; temperature-programmed reduction/oxidation cycles (TPR/TPO).
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