Silver catalyst and a process for its preparation

摘要: A silver catalyst containing lithium and cesium as promoters for the direct oxidation of ethylene with oxygen to give oxide is applied a porous carrier essentially consists α-alumina contains certain amounts soluble calcium, aluminum, potassium sodium salts. The has BET surface area from 0.4 0.8 m2 /g, pore volume not less than 0.45 ml/g, pores being equally accessible cold warm water, bulk density 700 kg/m3 shape which, in reactor, provides geometrical 600 /m3, on which more 13% by weight are active component 115 kg available per m3 100 300 ppm 200 present promoters. process preparation its use described.