实验结果表明，影响顺酐收率的主要因素是催化剂的相组成及钒的氧化态，而不是催化剂的比表面积。
The main factor influencing the yield of maleic anhydride is the phase composition or oxidation state of vanadium in the catalyst, and is not the BET surface area of the catalyst.
讨论了它们的结构和催化性能，并分析了含钒催化剂上氧化和氨氧化的一般机理。
Their structure and catalyst properties are discussed. Common feature and differences in mechanism of oxidation and ammoxidation are analyzed.
并以SO_2在SLP钒催化剂上氧化过程可能存在的两段式机理为例，说细推导了E_L在某些特定条件下的渐近解。
For example, the possible two-step catalytic reaction schemes of SO_2 oxidation on SLP vanadium catalyst and the asymptotic solutions of E_L at some special conditions have been evaluated in detail.
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