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- A new catalyst, niobic acid, was used for the synthesis of di 2 ethylhexyl maleate with yield of 86. 研究了用新型催化剂铌酸催化合成马来酸二辛酯的工艺。
- 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苄酯。
- Niobic acid as a solid catalyst can be directly applied in the hydrolysis, esterification, condensation and alkylation reaction etc. 铌酸可直接作为固体催化剂，应用于水解、酯化、缩合、烷基化等反应中；
- Using liquid-phase esterification as a probe-reaction the catalytic activity of niobic acid on the synthesis of ethyl propionate was studied. 首次以丙酸与乙醇的酯化反应为探针反应,探索了铌酸液相催化合成丙酸乙酯的适宜条件。
- The result showed the niobic acid has high catalytic activity and stability when it is used as solid acid catalyst and support, and it can be used more widely. 结果表明,无论是作为固体酸催化剂还是作为载体,铌酸都表现出较高的催化活性和稳定性,具有良好的应用前景。
- In a system with alcohol as solvent and aqueous H 2O 2 as oxidizer,the catalyst peroxy niobic acid can catalyze cyclopentene to prepare glutaraldehyde with high efficiency. 以氧化铌为原料制备了过氧铌酸、以乙醇为溶剂、双氧水为氧化剂的体系中,过氧铌酸作为催化剂能够高效的催化环戊烯制备戊二醛。
- A series of niobic acids at different calcination temperatures was prepared. 在不同焙烧温度下制备了一系列固体铌酸催化剂。
- Niobic acid and compounds containing niobium are applied in a wide range of catalysis fields for their unique acidic property and thermal stability. 摘要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。
- 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。
- Keywords niobic acid;catalysis;ketol reaction; 铌酸;催化;缩酮反应;
- Keywords niobic acid;catalyst;toluene;nitration; 铌酸;催化剂;甲苯;硝化;
- Keywords sec-butyl acetate;niobic acid;catalysis; 乙酸仲丁酯;铌酸;催化;
- He owns a detailed miniature of the Titanic. 他有一艘泰坦尼克号的精致小模型。
- A salt or an ester of titanic acid. 钛酸盐钛酸的盐或酯
- Catalytic Synthesis of Dibutyl Maleate with Niobic Acid 铌酸催化合成马来酸二正丁酯
- The Titanic and all her crew were in Davy Jones's locker. 泰坦尼克号及其全体船员均都葬身鱼腹。
- Catalytic synthesis of benzyl acetate by niobic acid 铌酸催化合成乙酸苄酯
- Synthesis of Benzyl Propionate Catalyzed by Niobic Acid 铌酸催化合成丙酸苄酯
- The two of them are locked in a titanic struggle for control of the company. 他们俩为争夺对公司的控制权打得不可开交。
- Liquid-phase Esterification Catalyzed by Niobic Acid 铌酸液相催化酯化
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries
