Method of producing (NH
View Patent ↗A method of producing NH 2 (R 2 ), the method comprising reacting a metal hydride with a compound having the general formula: M 1 X(BH 4 )y(NH 2 (R 2 )) n wherein M 1 comprises one or more of Li, Na, K, Rb, Cs, Be, Mg, Ca, Sr, Ba, La, Al, Ga and Sc; 0<n≦4; R 2 comprises —H, alkyl and an aromatic substituent; and x and y are selected so as to maintain electroneutrality.
1. A method of producing hydrogen, the method comprising reacting a metal hydride with a metal borohydride ammoniate compound having the general formula:
M 1 x (BH 4 ) y (NH 2 (R 2 )) n
wherein M 1 comprises one or more of Li, Na, K, Rb, Cs, Be, Mg, Ca, Sr, Ba, La, Al, Ga or Sc;
0<n≦4;
R 2 comprises —H, alkyl or an aromatic substituent; and
x and y are selected so as to maintain electroneutrality,
wherein the compound is in a solid state form and acts as a solid state store for NH 2 (R 2 ); and
wherein the reaction results in hydrogen being produced.
2. The method of claim 1 wherein the metal hydride comprises one or more of LiH, NaH, KH, RbH, CsH, BeH 2 , MgH 2 , CaH 2 , SrH 2 , BaH 2 , ScH 3 , AIH 3 , GaH 3 , InH 3 , SnH 4 , SbH 5 , PbH 4 , or BiH 3 .
3. The method of claim 2 wherein the metal hydride comprises LiH.
4. The method of claim 1 wherein the metal hydride comprises a hydride of one or more of a first row transition metal, a second row transition metal, and a third row transition metal.
5. The method of claim 4 wherein the first row transition metal is selected from the group consisting of Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu and Zn.
6. The method of claim 1 wherein the second row transition metal is selected from the group consisting of Y, Zr, Nb, Mo, Tc, Ru, Rh, Pd, Ag and Cd.
7. The method of claim 1 wherein the third row transition metal is selected from the group consisting of La, Hf, Ta, W, Re, Os, Ir, Pt, Au and Hg.
8. The method of claim 1 wherein R 2 is hydrogen.
9. The method of claim 1 wherein M 1 is Li.
10. The method of claim 1 wherein the reaction is carried out in the temperature range of from 0 to 400° C.
11. The method of claim 1 wherein the reaction is carried out in the temperature range of from 275 to 350° C.
12. A method of producing NH 2 (R 2 ), the method comprising providing a metal borohydride ammoniate compound having the general formula:
M 1 x (BH 4 ) y (NH 2 (R 2 )) n
wherein M 1 comprises one or more of Li, Na, K, Rb, Cs, Be, Mg, Ca, Sr, Ba, La, Al, Ga or Sc;
0<n≦4;
R 2 comprises —H, alkyl or an aromatic substituent; and
x and y are selected so as to maintain electroneutrality;
wherein the compound is in a solid state form and acts as a solid state store for NH 2 (R 2 ), and
heating said compound at a temperature of from 40 to 60° C. to produce NH 2 (R 2 ).
13. A method according to claim 1 , or claim 12 which is carried out in a fuel cell.
14. The method of claim 12 wherein R 2 is hydrogen.
15. The method of claim 12 or 14 wherein M 1 is Li.