Metal amidoborane compositions and processes for their preparation
AssigneeSigma-Aldrich Co.
InventorsViktor Balema, Kanth Josyula, Guolin Xu, Nathaniel Wallock, Scott Batcheller, Peng Gao, Shashi Jasty
Life of this patent
Estimating the term…
Abstract
The present invention provides compositions comprising a metal amidoborane and an amine, and processes for preparing the metal amidoborane compositions. In particular, the process comprises contacting ammonia borane with a metal amide in the presence of an amine solvent to form the metal amidoborane composition. The invention also provides methods for generating hydrogen, wherein the method comprises heating the metal amidoborane composition such that hydrogen is released.
Claims29
A composition comprising a metal amidoborane comprising M(NH2BH3)x and an amine comprising NR1R2R3,
- wherein:
- M is a metal chosen from an alkali metal, an alkaline earth metal, and a transition metal;
- R1, R2, and R3 are independently chosen from hydrogen, hydrocarbyl, substituted hydrocarbyl, and silyl, provided any two of R1, R2, and R3 together may form a ring or a ring system chosen from carbocyclic, heterocyclic, aryl, and heteroaryl;
- and
- x is an integer equal to the valence of M.
(canceled)
7-8. (canceled)
11-12. (canceled)
A process for preparing a compound comprising Formula (III), the process comprising contacting a compound comprising Formula (I) with a compound comprising Formula (II) in the presence of an amine solvent comprising NR1R2R3 to form the compound comprising Formula (III) according to the following reaction scheme:
- wherein:
- M is a metal chosen from an alkali metal, an alkaline earth metal, and a transition metal;
- R1, R2, R3, R4, and R5 are independently chosen from hydrogen, hydrocarbyl, substituted hydrocarbyl, and silyl, provided any two of R1, R2, and R3 together may form a ring or a ring system chosen from carbocyclic, heterocyclic, aryl, and heteroaryl, and R4 and R5 together may form a ring or a ring system chosen from carbocyclic, heterocyclic, aryl, and heteroaryl;
- and
- x is an integer equal to the valence of M.
(canceled)
19-25. (canceled)
29-31. (canceled)
33-45. (canceled)
A method for generating hydrogen, the method comprising heating a composition comprising a metal amidoborane comprising M(NH2BH3)x and an amine comprising NR1R2R3 such that hydrogen is released;
- wherein:
- M is a metal chosen from an alkali metal, an alkaline earth metal, and a transition metal;
- R1, R2, and R3 are independently chosen from hydrogen, hydrocarbyl, substituted hydrocarbyl, and silyl, provided any two of R1, R2, and R3 together may form a ring or a ring system chosen from carbocyclic, heterocyclic, aryl, and heteroaryl;
- and
- x is an integer equal to the valence state of M.
(canceled)
51-57. (canceled)
Dependencies are inferred from the claim text.