Reaction product vapor through methyl formate separating area, condenser and tail condenser, methyl formate crude product mixed liquor is got from gas phase condensation separating.
反应产物蒸汽依次通过反应器上部精馏区内的甲酸甲酯分离区、冷凝器、尾凝器，从气相冷凝分离得甲酸甲酯的粗产品混合液。
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。
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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