Tungsten Silicate Catalytic Synthesis Cinnamic Acid Isopentyl Acetate
Tungsten silicate is a kind of tungsten heteropoly acid with Keggin structure, recently it is widely used as food additives on catalytic synthesis. Its appearance is white or pale yellow deliquescent crystal. Isopentyl cinnamate is a kind of perfume. It is a colorless viscous liquid with cocoa flavor. It is mainly used in food and daily chemical industry. It is a kind of spice which has a bright future to be developed. The traditional synthesis is catalyzed by sulfuric acid, cinnamic acid and isoamyl alcohol process acetification, the main drawback of this method is the existence of long reaction time, low yield, complex process polluted water on environment, sulfate has strong corrosive effect on equipment. Tungsten silicate is an environmentally friendly green catalyst, it has the structural characteristics of complexes and metal oxides, it has the acid catalysts function as inorganic acids (such as sulfuric acid) and solid acids (such as molecular sieves). In th...