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US 11,452,993 B2Granted
Polyoxometalates comprising noble metals and corresponding metal clusters
AssigneeExxonMobil Chemical Patents Inc.
InventorsUlrich Kortz, Yixian Xiang, Zhengguo Lin, Peng Yang, Helge Jaensch, Wassim W. Ayass
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Abstract
The invention relates to polyoxometalates represented by the formula (An)m+{M′s[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.
Claims3
A composition comprising a polyoxometalate represented by the formula:
- (An)m+{M′s[M″M12X8Oy]}m−
- or solvates thereof, wherein:
- each A independently represents a cation and is Na,
- n is the number of cations and is 10,
- all M are the same, and are Pd,
- s is 4,
- M″ is Pd,
- each X is As,
- y is 40, and
- m is 1, and is representing the total positive charge m+ of n cations A and the corresponding negative charge m− of the oxo-cluster {M′s[M″M12X8Oy]}, with M′ being Ag.
7 more elements
Dependencies are inferred from the claim text.