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    • 7. 发明授权
    • Method for stabilizing a phosphorus-vanadium-oxygen complex catalyst
    • 稳定磷 - 钒 - 氧络合物催化剂的方法
    • US4094816A
    • 1978-06-13
    • US753551
    • 1976-12-22
    • Walter Partenheimer
    • Walter Partenheimer
    • B01J23/94B01J27/28C07C51/215C07C51/25B01J23/92
    • C07C51/215B01J23/94B01J27/285C07C51/25Y02P20/584Y10S502/50
    • The present disclosure relates to a method for the stabilization of certain phosphorus-vanadium-oxygen complex catalysts by the repetitive reactivation of such catalysts using a specified class of reactivating agents. The present method is specifically applicable to the stabilization of phosphorus-vanadium-oxygen complex catalysts which are suitable for the production of maleic anhydride from aromatic or aliphatic feed streams. In a specific instance, the stabilization process incorporates passing a feed stream of an aliphatic hydrocarbon and oxygen over a phosphorus-vanadium-oxygen catalyst to cause it to deactivate, thereafter contacting the deactivated catalyst with a specified class of reactivating agents and thereafter repeating this sequence at least once. This process tempers the catalyst so it deactivates at a lower rate and is improved in its performance.
    • 本公开内容涉及通过使用特定类别的再活化剂重复地再活化这些催化剂来稳定某些磷 - 钒 - 氧络合物催化剂的方法。 本方法特别适用于适用于从芳族或脂肪族原料流生产马来酸酐的磷 - 钒 - 氧络合物催化剂的稳定化。 在具体情况下,稳定过程包括使磷 - 钒 - 氧催化剂上的脂族烃和氧气进料流通过,使其失活,然后使失活的催化剂与特定类别的再活化剂接触,然后重复该顺序 至少一次。 该方法使催化剂变得缓和,使其以较低的速率失活并且其性能得到改善。