Abstract
Zirconium phytate (ZrPA) was prepared via gelation of zirconyl chloride and phytic acid in certain ratios. Fourier-transform infrared spectroscopy was applied to confirm the structure and interactions between Zr4+ and phytate ions, including hydrogen bonding and chelation. Scanning and transmission electron microscopic study have shown that ZrPA has a fusiform shape and a layered structure. Good thermal stability up to 250°C was obtained. ZrPA(3:4) exhibited an ion exchange capacity of 1.04meqg−1. At 140°C, the proton conductivity of ZrPA(3:4) was 0.099Scm−1 at 100% RH, 0.042Scm−1 at 50% RH and 0.018Scm−1 at 0RH.
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