Polyoxometalates comprising noble metals and corresponding metal clusters

Patent metadata

Field	Value
Publication number	US-10857527-B2
Application number	US-201716071049-A
Country	US
Kind code	B2
Filing date	Jan 19, 2017
Priority date	Feb 4, 2016
Publication date	Dec 8, 2020
Grant date	Dec 8, 2020

Abstract

The invention relates to poly oxometalates represented by the formula (An)m+{M′s[M″M15X10OyRzHq]}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.

First claim

The invention claimed is:

1. A composition comprising a polyoxometalate represented by the formula
(A n ) m+ {M′ s [M″M 15 X 10 O y ]} m−
or solvates thereof, wherein
A is Na,
n is 14.75,
M′ is Ag;
s is 4.25,
M″ is Ag,
M is Pd,
X is P,
y is 50,
and m is 14,75 and represents the total positive charge m+ of n cations A and the corresponding negative charge m− of oxo-cluster {M′ s [M″M 15 X 10 Oy]}.

2. The composition of claim 1 , represented by the formula:
(A n ) m+ {M′ s [M″M 15 X 10 ]} m− ·wH 2 O

wherein w represents the number of attracted water molecules per oxo-cluster {M′ s [M″M 15 X 10 O y ]}, and ranges from 1 to 100.

3. The composition of claim 1 , wherein said polyoxometalate is in the form of particles, and wherein at least 90 wt % of said polyoxometalate particles are in the form of primary particles.

Assignees

• Kortz Ulrich
• Xiang Yixian
• Lin Zhengguo
• Yang Peng
• Jaensch Helge
• Ayass Wassim W
• Exxonmobil Chemical Patents Inc

Inventors

• Kortz Ulrich
• Xiang Yixian
• Lin Zhengguo
• Yang Peng
• Jaensch Helge
• Ayass Wassim W

Classifications

• B01J2235/05

  Nuclear magnetic resonance [NMR] · CPC title

• B01J2235/15

  X-ray diffraction · CPC title

• B01J2235/10

  Infrared [IR] · CPC title

• B01J35/70

  characterised by their crystalline properties, e.g. semi-crystalline (catalysts comprising carbon B01J21/18; molecular sieves B01J29/00) · CPC title

• B01J35/50

  characterised by their shape or configuration · CPC title