1. Study on Acid Modified Niobic Acid Catalyst for Synthesis of 2, 5 - Dimethyl - 2, 4 - Hexadiene.
酸处理铌酸对合成2,5-二甲基- 2,4 -己二烯催化作用的研究。
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2. In this system, the water-washed niobic acid, acid-washed niobic acid and niobic acid for phosphoric acid-treated were studied.
本文分别对直接水洗法、酸水洗法以及磷酸处理铌酸催化剂进行了研究。
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3. Using niobic acid as catalyst, cyclohexane as dehydrant, benzyl propionate was synthesized based on propionic acid and benzyl alcohol.
摘要以铌作催化剂，环己烷为带水剂，用丙酸和苯甲醇直接合成了丙酸芐酯。
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4. Niobic acid and compounds containing niobium are applied in a wide range of catalysis fields for their unique acidic property and thermal stability.
铌酸和含铌化合物独特酸性和热稳定性，广泛的应用催化领域中。
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5. It was observed that the catalytic activity and the usable life of the treated niobic acid for synthesis of diethylene glycol dibenzoate was apparently higher than that of the untreated niobic acid.
用于催化酯化合成二甘醇二苯甲酸酯增塑剂 ，处理后固体铌酸的催化活性和重复使用寿命有明显提高。
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6. It was observed that the catalytic activity and the usable life of the treated niobic acid for synthesis of diethylene glycol dibenzoate was apparently higher than that of the untreated niobic acid.
