马来酸酐
化学
铜
催化作用
无机化学
琥珀酸酐
氢解
离子
醋酸酐
高分子化学
有机化学
聚合物
共聚物
作者
G. L. Castiglioni,Massimo Gazzano,G. Stefani,Angelo Vaccari
出处
期刊:Studies in Surface Science and Catalysis
日期:1993-01-01
卷期号:: 275-282
被引量:5
标识
DOI:10.1016/s0167-2991(08)63330-3
摘要
Cubic spinel-type phases containing an excess of copper ions may be obtained mainly by controlled oxidation of homogeneous copper-rich precipitates, via intermediate chromates. Part of the copper ions may be replaced by other bivalent cations, with corresponding changes in both thermal stability and catalytic properties. In particular the partial substitution of cadmium ions for copper ions gives rise to considerable deactivation in the hydrogenation of both y-butyrolactone (GBL) and maleic anhydride (MA), while substitution of zinc ions causes a slight decrease in the activity with GBL, but favours the hydrogenation of succinic anhydride (SA) to GBL. On the other hand, the partial substitution of magnesium ions for the copper ions gives rise to an increase in the productivity of GBL from MA, inhibiting the reactions of further hydrogenation and/or hydrogenolysis.
科研通智能强力驱动
Strongly Powered by AbleSci AI