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氧化铌在含水体系中表现出强酸性,因而它在众多的含水反应中得到越来越多的应用。酸浸渍处理后的铌酸在一定条件下可变成结晶型氧化铌。它不仅酸量大,酸强度高,而且酸性可保持到较高的温度。我们用硫酸溶解的方法处理铌酸,在较低温度下得到了结晶氧化铌,它对气相酯化反应和气相醇脱水反应均具有较好的催化作
Niobium oxide shows strong acidity in aqueous systems, so it is gaining more and more applications in numerous aqueous reactions. Acid leaching of niobate under certain conditions can become crystalline niobium oxide. It not only has a large amount of acid, high acid strength, but also maintains the acidity to a higher temperature. Niobium acid was treated by sulfuric acid dissolution and crystallized niobium oxide was obtained at a lower temperature, which has a good catalytic activity for gas phase esterification and gas phase alcohol dehydration