niobic

常见例句

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。
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 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。
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。