Synthesis of high-performance zeolite catalysts demands high-performance raw materials. Evonik offers a range of different silica sources for the synthesis of almost any kind of zeolite. Customers have the choice of materials with different specific surface areas, bulk density and purity to meet the demand of their specific reaction and production technologies. The product range includes very pure AEROSIL® fumed silica products with different specific surface areas, SIPERNAT 50 KAT II or SIPERNAT® 160 precipitated silica with reduced sodium content and SIPERNAT® 807 aluminosilicates for demanding zeolites as well as economic SIPERNAT® grades.