Importance

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Abstract

A liquid-phase catalyst is represented by the formula X:T:Z:Q, wherein X is molybdenum, tungsten or chromium, T is nickel, X and T being in zero valent form or in the form of a halide, an oxide, a carboxylate of 1 to 20 carbon atoms, a carbonyl or an hydride; Z is a halide source which is hydrogen halide, halogen, or an alkyl halide wherein the alkyl group contains 1 to 20 carbon atoms, and Q is the alkali metal component and is in the form of an iodide, a bromide, a chloride or a carboxylate as defined for X and T, the molar ratio of X to T being 0.1-10:1, the molar ratio of X+T to Q being 0.1-10:1, and the molar ratio of Z to X+T being 0.01-0.1:1.

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First Claim