ETS-10 (Engelhard titanosilicate structure 10) is a novel microporous framework titanosilicate for photocatalytic application because it is a semiconductor with photo-excitable titanium units . The structure of ETS-10 consists of orthogonal chains of corner sharing octahedral titanium (TiO6) linked by tetrahedral silicon (SiO4) through bridging oxygen ions. Especially, the TiO6 zig-zag chains are arranged in parallel with~7? separation and have a repeatable ordering along the a-axis in one layer and the b-axis in the next layer.
Chromium-containing materials are also known to possess important catalytic properties such as ethylene polymerization and redox catalysis. So, these have been shown that various transition metal ions (Cr, Co, Fe and so on) substituted ETS-10 improve the ability of catalysis .
ETCrS-10 is particularly interesting for Cr and Ti ordering structure and spin system of them at low temperature because it has 1-D nano wire structure and intrinsic defects or stacking faults. In this study, we will present the structure and magnetic properties of 1-D spin system from the experimental results of EPR, SQUID, ASMS and neutron diffraction.
 S. Uma, S. Rodrigues, I. N. Martyanov, K. J. Klabunde, Microporous and Mesoporous Materials 67 (2004) 181.
 P. Brandao, A. Philippou, A. Valente, J. Rocha, M. Anderson, Phys. Chem. Chem. Phys., 3 (2001) 1773.