Studies on the synthesis of titanium silicalite, TS-1

Abstract

A new procedure for the synthesis of titanium silicalite-1 (TS-1) with high Ti/(Si + Ti) ratios is being reported. The rationale for the method adopted and the reasons for the incorporation of more Ti (than reported by earlier workers) are discussed based on liquid-phase n.m.r, studies of the precursors and reaction mixture. The influence of various synthesis parameters like temperature, SiOz/TiO2, OH-/SiO2, and H20/SiO2 ratios, the silica source, and nature of organic additives on the synthesis of TS-1 is discussed. The TS-1 samples have been characterized by XRD, i.r.t.g./d.t.a., and SEM.