ESR spectrum show that reduced of heteropoly acid was occurred in vapor-phase nitration reaction of benzene.

ESR谱表明：杂多酸催化剂的钨在苯气相硝化反应中发生了还原反应。

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ESR spectrum show that reduced of heteropoly acid was occurred in vapor-phase nitration reaction of benzene.

ESR谱表明：杂多酸催化剂的钨在苯气相硝化反应中发生了还原反应。

youdao