STUDIES ON THE HYDROGENATION OF METHYL ACRYLA- TE BY POLY-4-VINYLPYRIDINE AND ITS QUATERNARY AMMONIUM SALTS SUPPORTED Pd CATALYSTS
交联聚4-乙烯基吡啶及其季铵盐负载钯催化剂对丙烯酸甲酯加氢反应的研究

Crosslinked poly-4-vinylpyridine quaternized with methyl iodide, ethyl bromide has been prepared and the quaternary salts have been used for the support of the Pd catalyst. It is found that the hydrogenation rate of poly-4-vinylpyridine quaternized with methyl iodide and complexed with Pd depends pricipally on the degree of quaternization of the support. The activity increases as the quaternization degree decreases. When the quaternization degree is less than 80%, the catalytic activity of Pd supported on poly-4-vinylpyridine quaternized with methyl iodide is larger than that of Pd supported on poly-4-vinylpyridine. The preparation condition of the catalyst has also been investigated.