Production of maleic anhydride
    2.
    发明授权
    Production of maleic anhydride 失效
    生产马来酸酐

    公开(公告)号:US4288372A

    公开(公告)日:1981-09-08

    申请号:US100141

    申请日:1979-12-04

    摘要: Catalysts for the oxidation of hydrocarbons to acid anhydrides, for example maleic and phthalic anhydrides, are prepared from a vanadium/phosphorus mixed oxide precursor by conditioning it by contact with a strong acid of concentration at least 3N and solvent extraction to remove unwanted phases. The treated precursor is converted to a catalytically active form by heating. Novel catalysts containing phase X are produced. The catalysts may contain rare earth metal promoters.

    摘要翻译: 用于将烃氧化成酸酐(例如马来酸酐和邻苯二甲酸酐)的催化剂由钒/磷混合氧化物前体制备,通过与浓度至少为3N的强酸接触进行调理并进行溶剂萃取以除去不期望的相。 经处理的前体通过加热转化为催化活性形式。 制备含有相X的新型催化剂。 催化剂可以含有稀土金属助催化剂。