| 摘要 |
A vanadium/phosphorus mixed oxide catalyst containing not more than 0.2 wt % chloride is produced by drying chloride containing catalyst precursor at 100 DEG -180 DEG C., calcining the dried precursor, preferably under nitrogen, at 200 DEG -300 DEG C. and activating the calcined precursor at 350 DEG -550 DEG C. with a gas containing oxygen and a reducing agent such as propane, and preferably steam.
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