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Aromatic nitro cpds. carbonylation catalyst - contg. molybdenum oxide, palladium oxide, and magnesium, calcium or zinc oxide

机译:芳香硝基cpds。羰基化催化剂-续氧化钼,氧化钯和镁,钙或氧化锌

摘要

New catalyst for the carbonylation of aromatic nitro cpds. contains (a) 1.6-4.0 wt.% Mg oxide, Cal oxide or Zn oxide, (b) 48.8.-77 wt.% Pd oxide; and (c) Mo oxide to 100 wt.%. Used in carbonylation of aromatic nitro cpds. to give e.g. mono- and di-isocyanates useful in the prodn. of polymethane prods. and pesticides. Inclusion of Mg, Cal or Zr oxide in the catalyst increases its activity and selectivity, so that conversion of starting materials is increased to 100% and the desired end prods. are obtd. in up to 98 or 99% yield.
机译:用于芳族硝基cpds羰基化的新型催化剂。包含(a)1.6-4.0 wt。%的Mg氧化物,Cal氧化物或Zn氧化物,(b)48.8.-77 wt。%的Pd氧化物; (c)氧化钼至100重量%。用于芳族硝基cpds的羰基化。给例如产品中有用的单异氰酸酯和二异氰酸酯甲烷产品。和农药。催化剂中包含Mg,Cal或Zr氧化物可提高其活性和选择性,从而使起始原料的转化率提高至100%,并获得所需的最终产物。笨拙。收率可达98或99%。

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