Abstract
Tungstovanadogermanic heteropoly acid (H 5GeW 11VO 40) with Keggin structure was introduced onto mesoporous molecular sieve SBA-15 by incipient wetness method. The material was characterized by infrared (IR) and XRD to confirm the existence of mesopore and Keggin structure. The protonic conductivity of this composite was 3.09×10 −3 S cm −1 with the 85% HPA at 23 °C.
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