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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 niobic acid;catalytic synthesis;phenehtyl acetate; 铌酸;催化合成;乙酸苯乙酯;
Keywords niobic acid;catalytic synthesis;benzyl propionate; 关键词铌酸;催化合成;丙酸苄酯;
Keywords niobic acid;di n octyl phthalate;catalyst;synthesis; 铌酸;邻苯二甲酸二正辛酯;催化;合成;
Keywords Niobic acid;Benzaldehyde;Methanol;Condensation; 铌酸;苯甲醛;甲醇;缩合;
Keywords niobic acid;diisooctyl phthalate. catalysis; 铌酸;邻苯二甲酸二异辛酯;催化;
Keywords Niobic acid;Niobium oxide;Catalytic app lications; 关键词铌酸;氧化铌;催化应用;
Keywords niobic acid;modified;catalyst;toluene;regioselective nitration; 铌酸;改性;催化剂;甲苯;区域选择性硝化;
Keywords niobic acid;solid acid catalyst;ethanol;acetic acid;esterification; 铌酸;固体酸催化剂;乙醇;乙酸;酯化;
Keywords niobic acid;cyclohexane;benzyl alcohol;propionic acid;benzyl propionate; 铌酸;环己烷;苯甲醇;丙酸;丙酸苄酯;
Keywords niobic acid;esterification;diisobutyl ester of nylon acids; 铌酸;尼龙酸二异丁酯;酯化;合成;
Keywords Niobic Acid;Esterification Reaction;Ethyl Alcohol;Iso-Amyl Alcohol;Catalytic Behavior;Acetic Acid; 铌酸酯化反应;乙醇;异戊醇;乙酸;催化性能;
Keywords Niobic acid;Microwave;Catalysis;Esterification;Synthesis;Ethyl acetate;Acetic acid;Ethanol; 铌酸;微波;催化;酯化;合成;乙酸乙酯;乙酸;乙醇;
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。
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。
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。