| 摘要 |
A catalyst for, and method of, producing a reaction product predominantly of maleic anhydride, that is a product of reaction containing a ratio of maleic to citraconic anhydrides of at least 25 to 1, respectively, and preferably greater than about 100 to 1, respectively, by reacting a feed stream consisting of oxygen or an oxygen-containing gas and an organic C5 feed predominantly of piperylene and dicyclopentadiene, and preferably predominantly dicyclopentadiene, at bath temperatures of from about 360 DEG to about 450 DEG C over a catalyst comprising a mixture of 25 to 60 weight percent titanium oxide (TiO2), 5 to 40 weight percent molybdenum oxide (MoO3) and 30 to 60 weight percent vanadium oxide (V2O5) on an alpha alumina or alumina-silica carrier having less than about one square meter per gram (<1 m2/g) surface area. The feed rate of the reactants is preferably between about 1,500 and about 15,000 gas hourly space velocity; the C5 hydrocarbon content of the feed gases being between about 0.5 and 1.8 volume percent.
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