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The effect of active components quantity and ratio on activity and selectivity of the catalyst for vinyl acetate synthesis by gas-phase acetoxylation of ethylene
https://doi.org/10.18412/1816-0387-2010-2-
Abstract
The characteristics of vinyl acetate (VA) synthesis from ethylene (activity, selectivity, and lifetime) are dependent on the properties of heterogeneous catalyst. Scientific basis for creation of such type industrial catalysts are stated in scientific literature insufficiently. The paper informs us about investigation of quantitative relationships of catalysts composition containing palladium, gold, potassium acetate and its activity, selectivity and lifetime, also about the selecting the optimum chemical composition of the catalyst. The mathematical functions of the catalyst activity and contenting of it components for optimal composition is proposed. The adequacy of the proposed mathematical functions is tested and verified in a pilot unit. It is shown that the 1,5 % palladium content, 0,75 % gold and 5,0 % potassium acetate, the catalyst activity is 700 g VA/(l·kat·h), and the selectivity of vinyl acetate formation on ethylene is 93–95 %.
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For citations:
Voskanyan P.S. The effect of active components quantity and ratio on activity and selectivity of the catalyst for vinyl acetate synthesis by gas-phase acetoxylation of ethylene. Kataliz v promyshlennosti. 2010;(2). (In Russ.) https://doi.org/10.18412/1816-0387-2010-2-
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