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US 11,241,677 B2Granted
Polyoxometalates comprising noble metals and post-transition metals and metal clusters thereof
AssigneeExxonMobil Chemical Patents Inc.
InventorsTian Ma, Ulrich Kortz, Peng Yang, Zhengguo Lin, Wassim W. Ayass
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Abstract
The invention relates to polyoxometalates represented by the formula (An)m+[M′M12X8OyRzHq]m− or solvates thereof, corresponding supported polyoxometalates, and processes for their preparation, as well as corresponding metal clusters, optionally in the form of a dispersion in a liquid carrier medium or immobilized on a solid support, and processes for their preparation, as well as their use in reductive conversion of organic substrate.
Claims7
A polyoxometalate represented by the formula
- (An)m+[M′M12X8Oy]m−
- or solvates thereof, wherein
- each A independently represents a cation and is selected from the group consisting of Li, K, Na and combinations thereof,
- n is the number of cations, wherein n=8 or 12,
- all M are independently selected from the group consisting of Pd and Pt, and each M has d8 valence electron configuration,
- M′ is selected from the group consisting of Ge, Sn, and Pb,
- y is a number from 32 to 40, and
- m is a number representing the total positive charge m+ of n cations A and the corresponding negative charge m− of [M′M12X8Oy], wherein m=8 or 12.
5 more elements
Dependencies are inferred from the claim text.