Process for making a mixed metal oxide
A process for making a mixed metal oxide, may involve: (a) providing a hydroxide or oxyhydroxide of TM with an average particle diameter (D50) in the range of from 0.1 μm to 5 mm; (b) subjecting the hydroxide or oxyhydroxide of TM to a stream of gas with a temperature in the range of from 150 to 2000° C., wherein TM contains nickel and at least one further transition metal selected from cobalt and manganese.
1. A process for making a mixed metal oxide, the process comprising:
subjecting a hydroxide or oxyhydroxide of TM with an average particle diameter (D50) in a range of from 0.1 μm to 5 mm, to a stream of gas with a temperature in a range of from 150 to 2000° C. in the absence of lithium compounds,
and wherein TM has a composition of formula (I)
(Ni a Co b Mn c ) 1-d M d (I),
wherein
a is in a range of from 0.2 to 0.95,
b is in a range of from 0.025 to 0.4,
c is in a range of from zero to 0.6, and
d is in a range of from zero to 0.2,
M is Mg, Al, Ba, W, Ti, Zr, or a combination thereof, and
a+b+c= 1.
2. The process of claim 1 , wherein the subjecting is performed in a tubular reactor.
3. The process of claim 1 , wherein the hydroxide or oxyhydroxide is provided as a solid dispersed in water, as a slurry, as a paste, or as particulate material.
4. The process of claim 1 , wherein the gas stream is air, a mixture of air and oxygen, or a flue gas.
5. The process of claim 1 , wherein the gas stream has a velocity sufficient to pneumatically transport the hydroxide or oxyhydroxide of TM together with the mixed metal oxide through the reactor.
6. The process of claim 1 , wherein the feed gas stream comprises CO 2 in a range of from 0.1 to 500 ppm by weight.
7. The process of claim 1 , wherein the average residence time of the hydroxide or oxyhydroxide of TM is in a range of from 0.1 seconds to 10 minutes.
8. The process of claim 1 , wherein the stream of gas has a temperature in a range of from 350 to 900° C.
9. The process of claim 1 , wherein the average particle diameter of the hydroxide or oxyhydroxide of TM is in a range of from 2 μm to 25 μm.
10. The process of claim 1 , wherein the temperature in the subjecting is in a range of from 200 to 250° C. and an average residence time of the subjecting is in a range of from 8 to 10 minutes.
11. The process of claim 1 , wherein the subjecting is conducted at a temperature in a range of from 1000 to 2000° C. and an average residence time of the subjecting is in a range of from 0.1 to 5 seconds.
12. The process of claim 1 , wherein TM comprises Ni, Co, and Al.
13. The process of claim 1 , wherein TM comprises nickel and cobalt.
14. The process of claim 1 , wherein TM comprises nickel and manganese.
15. The process of claim 1 , wherein TM comprises nickel, cobalt, and manganese.
16. The process of claim 1 , wherein a hydroxide of TM is subjected.
17. The process of claim 1 , wherein an oxyhydroxide of TM is subjected.
18. The process according to claim 1 , wherein the process further comprises mixing the mixed metal oxide with a compound of lithium.
19. The process according to claim 1 , wherein TM contains 0.05 mol-% or less of sodium.