Metal phosphide catalysts and methods for making the same and uses thereof

Patent metadata

Field	Value
Publication number	US-9636664-B1
Application number	US-201615174691-A
Country	US
Kind code	B1
Filing date	Jun 6, 2016
Priority date	Jun 4, 2015
Publication date	May 2, 2017
Grant date	May 2, 2017

Abstract

The present disclosure relates to a method that includes heating a mixture that includes a metal phenylphosphine-containing precursor that includes at least one of Mo(PPh 3 ) 2 (CO) 4 , Pd(PPh 3 ) 4 , Ru(PPh 3 ) 3 Cl 2 , Ru(PPh 3 ) 2 (CO) 2 Cl 2 , Co(PPh 3 )(CO) 2 (NO), and/or Rh(PPh 3 ) 2 (CO)Cl, a surfactant, and a solvent. The heating is to a target temperature to form a heated mixture containing a metal phosphide nanoparticle that includes at least one of MoP, Ru 2 P, Co 2 P, Rh 2 P, and/or Pd 3 P, and the metal phosphide nanoparticle is not hollow.

First claim

What is claimed is:

1. A method comprising:
heating a first mixture comprising:
Ni(PPh 3 ) 2 (CO) 2 ;
a phosphine;
oleylamine; and
a solvent, wherein:

the heating is to a first temperature to form a first heated mixture containing a nickel phosphide nanoparticle that is not hollow;
adding to the first heated mixture a metal phenylphosphine-containing precursor comprising at least one of Rh(PPh 3 )(CO)Cl, Mo(PPh 3 ) 2 (CO) 4 , Pd(PPh 3 ) 4 , Ru(PPh 3 ) 3 Cl 2 , Ru(PPh 3 ) 2 (CO) 2 Cl 2 , or Co(PPh 3 )(CO) 2 (NO) resulting in a second mixture, and
heating the second mixture to a second temperature to form a second heated mixture containing a bimetallic phosphide nanoparticle comprising at least one of (Ni x Rh y ) 2 P z , (Ni x Mo y ) 2 P z , (Ni x Ru y ) 2 P z , (Ni x Co y ) 2 P z , or (Ni x Pd y ) 2 P z , wherein:
z is equal to 1.0,
both x and y are greater than zero
x+y is equal to 1.0, and
the bimetallic phosphide nanoparticle is not hollow.

2. The method of claim 1 , wherein the first temperature is between 225° C. and 320° C.

3. The method of claim 2 , wherein the first temperature is maintained for a first time period between 15 minutes and 4 hours.

4. The method of claim 1 , wherein the solvent is 1-octadecene.

5. The method of claim 1 , wherein the second temperature is between 250° C. and 350° C.

6. The method of claim 5 , wherein the second temperature is maintained for a second time period that is between 1 hour and 4 hours.

Assignees

• Alliance Sustainable Energy

Inventors

• Habas Susan Ellen
• Wang Jun
• Ruddy Daniel A
• Baddour Frederick Raymond Gabriel
• Schaidle Joshua

Classifications

• B01J2235/00

  Indexing scheme associated with group B01J35/00, related to the analysis techniques used to determine the catalysts form or properties · CPC title

• B01J35/45

  Nanoparticles · CPC title

• B01J35/70

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

• B01J2235/30

  Scanning electron microscopy; Transmission electron microscopy · CPC title

• B01J35/77

  Compounds characterised by their crystallite size · CPC title