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- W2046859970 abstract "Abstract A study has been made of the kinetics and mechanism of the oxidation of 1-butene to methyl ethyl ketone (MEK) over a new heterogeneous vana- date monolayer Wacker catalyst, in the temperature range of 363 to 408 K and at 0.11 MPa total pressure. The kinetics of reaction with respect to the dependency of the reaction rate on the partial pressures of 1-butene and of water, as well as on the surface Pd and NaCl concentrations, is logically related to the kinetics of the homogeneous Wacker process. At 10% con- version, the main product (MEK) is formed with 80 – 95% selectivity. The formation of byproducts, including crotonaldehyde, acetone, acrolein, acetaldehyde and acetic acid, has been studied and a reaction scheme developed. From an XPS/AES analysis of spent catalysts, it follows that deactivation is probably caused by a gradual decrease of the chlorine surface concentration. Compensation for the loss of chlorine by adding HCl to the deactivated catalyst leads to a partly regenerated catalyst. Replacing the PdCl 2 /NaCl sub-monolayer by PdSO 4 /H 2 SO 4 leads to a stable catalyst." @default.
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- W2046859970 date "1989-11-01" @default.
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- W2046859970 title "Kinetics and mechanism of the gas-phase oxidation of 1-butene to butanone over a new heterogenized surface vanadate Wacker catalyst" @default.
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- W2046859970 doi "https://doi.org/10.1016/0304-5102(89)80266-4" @default.
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