Patent ID: 7282192

Claim:
A composition comprising a compound having the following empirical formula (1): X m Y n S p O q (1) where X is at least one metal selected from Group 4 of the Periodic Table of Elements, Y is at least one metal selected from Group 3 (including the Lanthanides and Actinides) of the Periodic Table of Elements, and S is sulfur; m, n, p and q are the atomic ratios of their respective components and, when m is 1, n is from about 0.01 to about 0.35, p is from about 0.01 to about 0.35, q is the number of oxygen atoms necessary to satisfy the valence of the other components, further characterized as containing a sulfur species with DRIFTS S═O stretching vibrations in the range of 1365-1390 cm −1 .