甲缩醛氧化制浓甲醛用Fe－Mo氧化物催化剂的研究

Fe-Mo Oxide Catalysts for Proparation of Concentrated Formaldehyde by Methylal Oxidation

制备了甲缩醛氧化制浓甲醛的金属氧化物催化剂。以管式反应器和色谱分析联用装置考察了铁－钼氧化物体系及添加第三组分铬和铋的催化剂的活性。结果表明，具有高活性催化剂的Ｍｏ／Ｆｅ最佳原子比为２．０～２．６，反应温度＞２９０℃，所得甲缩醛转化率＞９８％，甲醛选择性可达１００％。

he metal oxide catalysts liave been prepared for the title process. The catalysts contain-ing Fe,Mo and other additives such as Bi and Cr were evaluated by the tubular reactor-chromatogaphytechnigue. It as found that the optimum ratio of Mo to Fe atoms of the catalyst was 2.0 to 2. 6 andthe optimum reaction temperature was≥290℃,resulting in methylal conversion>98% and HCHO se-lectivity near 100%.