Nanocrystalline TiO2 was prepared by means of a stearic acid gel method. The product was investigated by differential thermal analysis, thermogravimetric analys
We substituted several environmentally friendly catalysts which included HY and H-β zeolites, various cation-exchanged β zeolites, and solid-supported ferric
The second-order nonlinear optical properties of thiophene S,S-dioxides derivatives were studied by using the ZINDO-SOS method. The computed results show that t