Patent ID: 7692046

Claim:
A promoter for selective heterogeneous oxidation of arylalkyl hydrocarbons to form hydroperoxides, comprising the product of contacting: a solid support comprising a metal oxide surface; and an iron compound according to the formula (Fe +n (X 1 R 1 R 2 ) x (X 2 R 3 ) y X 3 z )M n′ p ; wherein n is the valence of Fe and has a value of 2 or 3; R 1 , R 2 and R 3 are the same or different and are independently selected from hydrogen and hydrocarbyls; X 1 is nitrogen or phosphorus; X 2 is oxygen or sulfur; X 3 is halogen; M is a cation of valence n′ where n′ is from 1 to 3; and p, x, y and z are numerical values wherein z is 0 or 1, p is 0, 1 or 2, at least one of x and y is equal to or greater than 1, and x+y+z=n+(n′)(p) and 2≦(x+y+z)≦4.