Method for producing metal oxides by means of spray pyrolysis
US-2019352189-A1 · Nov 21, 2019 · US
Method for producing metal oxides by means of spray pyrolysis
US2017275166A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2017275166-A1 |
| Application number | US-201515529326-A |
| Country | US |
| Kind code | A1 |
| Filing date | Nov 12, 2015 |
| Priority date | Nov 25, 2014 |
| Publication date | Sep 28, 2017 |
| Grant date | — |
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Abstract
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A process for producing a metal oxide powder proceeds by spray pyrolysis, in which a mixture comprising ammonia and an aerosol which is obtained by atomizing a solution containing a metal compound by means of an atomization gas is introduced into a high-temperature zone of a reaction space and reacted in an oxygen-containing atmosphere therein and the solids are subsequently separated off.
First claim
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1 . A process for producing a metal oxide powder by spray pyrolysis, said process comprising: introducing a mixture comprising ammonia and an aerosol which is obtained by atomizing a solution containing a metal compound by an atomization gas into a high-temperature zone of a reaction space, reacting said mixture in an oxygen-containing atmosphere in said reaction space, and subsequently separating the solids off. 2 . The process according to claim 1 , wherein the concentration of ammonia is 0.5-5.0 kg NH 3 /kg of the metal used. 3 . The process according to claim 1 , wherein the high-temperature zone into which the mixture is introduced is a flame which is formed by the reaction of an oxygen-containing gas and a combustion gas. 4 . The process according to claim 3 , wherein the flame and the mixture are at least partly spatially separated from one another within the reaction space. 5 . The process according to claim 4 , wherein the following applies to the ratio of mean velocity of the flame to mean velocity of the mixture: 2≦v flame /v mixture ≦10. 6 . The process according to claim 1 , wherein at least one metal compound is a nitrate. 7 . The process according to claim 1 , wherein the metal component of the metal compounds is selected from the group consisting of Ag, Al, B, Ba, Ca, Cd, Co, Cr, Cu, Fe, Ga, Ge, Hf, In, Li, Mg, Mn, Mo, Nb, Ni, Pd, Rh, Ru, Sc, Si, Sn, Sr, Ta, Ti, V, Y and Zn.
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Classifications
Submicrometer sized, i.e. from 0.1-1 micrometer · CPC title
Surface area · CPC title
Oxides · CPC title
Compounds containing zirconium, with or without oxygen or hydrogen, and containing two or more other elements · CPC title
Particles with a specific particle size distribution · CPC title
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- What does patent US2017275166A1 cover?
- A process for producing a metal oxide powder proceeds by spray pyrolysis, in which a mixture comprising ammonia and an aerosol which is obtained by atomizing a solution containing a metal compound by means of an atomization gas is introduced into a high-temperature zone of a reaction space and reacted in an oxygen-containing atmosphere therein and the solids are subsequently separated off.
- Who is the assignee on this patent?
- Katusic Stipan, Kress Peter, Alff Harald, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification C01B13/34. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Sep 28 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).