铌酸是一种独特的固体酸催化剂，经低温热处理（100-300℃焙烧）后可显示出相当于70%硫酸的酸强度。铌酸为氧化铌的水合物, 分子式为Nb₂O₅·nH₂O。铌酸或Nb₂O₅可通过铌的氯化物或醇盐水解制得。铌酸在工业上是由碱法或酸法从铌铁矿和钽铁矿Fe[ (Nb , Ta)O₃]₂中制得的。
Microsoft Word - 20070626009修改稿.doc 关键词 铌酸 苯甲醛 甲醇 缩合 [gap=785]Keywords Niobic acid, Benzaldehyde, Methanol, Condensation
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... 铌酸钡钠陶瓷;sodium-barium niobate ceramics 氢氧化铌;铌酸;土酸;niobium hydroxide 钡;金属钡;Barium;bario (spanish);baryum (french) ...
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铌酸盐 [无化] niobate ; columbate
铌酸锶钡 SBN ; barium-strontium niobate ; strontium barium niobate
铌酸钾 [无化] potassium niobate ; potassium metaniobate
铌酸钠 sodium niobate ; Sodium metaniobate ; Sodium niobium oxide
周期性极化铌酸锂 PPLN ; periodically poled lithium niobate
铌酸钡钠 [无化] barium sodium niobate ; BNN
铌酸锂石 linobate
钽铌酸钾 KTN ; potassium tantalate niobate
铌酸钾锂 lithium poatassium niobate ; KLN
Secondly, the dehydration of cyclohexanol catalyzed by niobic acid in gas-phase was investigated. Compared with r-Al_(2)O_(3), niobic acid is excellent in catalytic activity and stability.
其次，本文对铌酸催化环己醇脱水成烯反应作了探索，并与γ-Al_2O_3进行了比较，发现其催化活性及活性稳定性均优于γ-Al_2O-3。
参考来源 - 铌酸催化剂在有机合成中的应用·2,447,543篇论文数据，部分数据来源于NoteExpress
论文题目：铌酸锂晶体极化电场的组分依赖研究。
Thesis title: Study on dependence of poling field on composition of lithium niobate crystals.
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。
Study on Acid Modified Niobic Acid Catalyst for Synthesis of 2, 5 - Dimethyl - 2, 4 - Hexadiene.
并在掺杂铌酸锂晶体中获得了高信噪比，信号光增益高达1583倍的光像放大。
We obtain a optical image amplification with high gain factor of 1583 in doped lithium niobate crystals.
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