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US-2015375218-A1 · Dec 31, 2015 · US
Silicon-aluminum mixed oxide powder
US8980784B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8980784-B2 |
| Application number | US-201213997677-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 3, 2012 |
| Priority date | Mar 16, 2011 |
| Publication date | Mar 17, 2015 |
| Grant date | Mar 17, 2015 |
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Abstract
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Silicon-aluminum mixed oxide powder having a weight ratio of (Al 2 O 3 /SiO 2 ) ttl in the total primary particle of from 0.003 to 0.05, a weight ratio (Al 2 O 3 /SiO 2 ) surface of the primary particles in a surface layer having a thickness of about 5 nm which is less than in the total primary particle and a BET surface area of from 50 to 250 m 2 /g. It is prepared by igniting one or more silicon compounds selected from the group consisting of CH 3 SiCl 3 , (CH 3 ) 2 SiCl 2 , (CH 3 ) 3 SiCl and (n-C 3 H 7 )SiCl 3 , a hydrolysable and oxidizable aluminum compound, at least one fuel gas and air and burning the flame into a reaction chamber, subsequently separating the solid from gaseous materials and subsequently treating the solid with water vapor. The silicon-aluminum mixed oxide powder can be used as catalyst.
First claim
Opening claim text (preview).
The invention claimed is: 1. A silicon-aluminum mixed oxide powder, wherein: the silicon-aluminum mixed oxide powder includes aggregated primary particles, a weight ratio (Al 2 O 3 /SiO 2 ) ttl in total primary particles is from 0.003 to 0.05, a weight ratio (Al 2 O 3 /SiO 2 ) surface of primary particles in a surface layer having a thickness of about 5 nm is less than the weight ratio (Al 2 O 3 /SiO 2 ) ttl in the total primary particles, and a BET surface area is from 5…
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Operations & Transport · mapped topic
Operations & Transport · mapped topic
- B01J21/12Primary
Operations & Transport · mapped topic
Chemistry & Metallurgy · mapped topic
Operations & Transport · mapped topic
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- What does patent US8980784B2 cover?
- Silicon-aluminum mixed oxide powder having a weight ratio of (Al 2 O 3 /SiO 2 ) ttl in the total primary particle of from 0.003 to 0.05, a weight ratio (Al 2 O 3 /SiO 2 ) surface of the primary particles in a surface layer having a thickness of about 5 nm which is less than in the total primary particle and a BET surface area of from 50 to 250 m 2 /g. It is prepared by igniting one or more si…
- Who is the assignee on this patent?
- Schulze Isfort Christian, Zanthoff Horst-Werner, Quandt Thomas, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification B01J21/12. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Mar 17 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). 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).