Catalyst and reactant in the same phase, there is no phase of reaction, called homogeneous catalysis, the catalyst can be homogeneous catalysis forhomogeneous catalyst. Homogeneous catalysts including liquid acid, alkali catalyst and color Seth solid acid and alkaline catalyst. Soluble transition metal compounds(salts and complexes) etc.. Homogeneous catalysts with molecules or ions of independent action, activity center is uniform, with high activity and high selectivity.
The catalyst also known as catalyst, in the definition of the junior middle school stage is to change the rate of a chemical reaction, and quality, chemical composition and properties of the material itself remained unchanged before and after participating in a chemical reaction. For example, manganese dioxide can be used as hydrogen peroxide (hydrogen peroxide) decomposition catalysts. Catalystand catalyst for inverse catalyst, catalyst to contribute to the reaction to the positive direction, help to reverse direction in the inverse catalyst reaction.
More than two kinds of material mixed in mixing equipment. This method is simple and feasible, for example conversion absorption manufacturing desulphurizing agent, is the active component (such as manganese dioxide, Zinc Oxide, zinc carbonate) and a small amount of binder (such as Magnesium Oxide, calcium oxide) continuous addition of a turntable can adjust the speed and inclination ofpowder metering, and injected into the metering of water.
Powder rolling mixed bond, forming uniform diameter of a sphere, the sphere afterdrying, baking is finished. Fe-Cr-K-O catalyst for Ethylbenzene Dehydrogenation to styrene, is made of iron oxide, potassium chromate and other solid powderpressing, roasting. Using this method should be the size and physical properties ofpowder attention.