Unsatd. aliphatic carboxylic acids are produced by vapour unsatd. aldehyde with O2 in the presence of steam in contact with an oxidn. catalyst contg. Mo, V, Ta and X in a ratio of MoaVbTacXd (where X is Fe, Cu, Co, Cr and/or Mn; a = 12; b = 1-14; c =0.1-12; d = 0-3.0), pref. on an inert support. The process can be used for the prodn. of acrylic acid from acrolein. The process gives high conversions, productivities and selectivities; in the case of the oxidn. of acrolein to acrylic acid, conversions of 54-89%, productivities of 15-24 scf./hr./lb. and selectivities of 93-96% can be obtd.
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机译：不好意思脂肪族羧酸是通过不饱和蒸汽生产的。在蒸汽与氧化物接触的情况下，将乙醛与氧气混合。催化剂续Mo，V，Ta和X的摩尔比为MoaVbTacXd（其中X为Fe，Cu，Co，Cr和/或Mn; a = 12; b = 1-14; c = 0.1-12; d = 0-3.0） ，偏好。在惰性支持下。该过程可用于产品。丙烯醛中的丙烯酸。该过程具有很高的转化率，生产率和选择性。在氧化的情况下。将丙烯醛转化为丙烯酸，转化率为54-89％，生产率为15-24标准立方英尺/小时/磅。选择性可以达到93-96％。
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