A new large pore tin-silicate analogue of zeolite ZSM-12 (MTW topology) with Si/Sn molar ratio > 70 has been synthesized hydrothermally using a new template, hexamethylene bis(benzyl dimethyl ammonium hydroxide). This material exhibits an expansion in unit cell volume (XRD), an IR band at 970 cm(-1) and a charge transfer band at 205 nm in the UV-Vis region indicating the presence of Si-O-Sn units with Sn4+ centers in T-d configuration. Sn-ZSM-12 catalyzes the oxidation of phenol, m-cresol and m-xylene using dilute H2O2 as an oxidizing agent.