Process for preparing highly active double metal cyanide catalysts and their use in the synthesis of polyether polyols
US-9221947-B2 · Dec 29, 2015 · US
Nickel form for preparation of catalytic nickel-ligand complexes
US9050591B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9050591-B2 |
| Application number | US-201213490177-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 6, 2012 |
| Priority date | Jun 10, 2011 |
| Publication date | Jun 9, 2015 |
| Grant date | Jun 9, 2015 |
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Abstract
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A novel nickel particulate form is provided that efficiently forms a zero-valent nickel complex with a phosphorus-containing ligands in an organic liquid to form a hydrocyanation catalyst. Particles in the nickel particulate form comprise nickel crystallites. For example, the nickel particulate form can have a BET Specific Surface Area of at least about 1 m 2 /gm; an average crystallite size less than about 20-25 nm, the nickel particulate form can have at least 10% of the crystallites in the nickel form can have a diameter (C10) of less than about 10 nm, and/or there are on average at least about 10 15 surface crystallites per gram nickel. A ratio of BET SSA to C50 for the nickel particulate form can be at least about 0.1×10 9 m/gm and preferably at least about 0.4×10 9 m/gm. Methods of preparation and use are also provided.
First claim
Opening claim text (preview).
What is claimed: 1. A nickel particulate form comprising nickel crystallites, wherein the nickel particulate form has a BET Specific Surface Area of at least about 1 m 2 /gm; at least 10% of the nickel crystallites have a size (C10) that is less than about 20 nm; the nickel crystallites have an average crystallite size of no greater than about 100 nm; and the nickel crystallite size distribution span is greater than about 1.0. 2. The nickel particulate form of…
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Classifications
Operations & Transport · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
- B01J31/22Primary
Operations & Transport · mapped topic
- B01J31/1845Primary
Operations & Transport · mapped topic
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- What does patent US9050591B2 cover?
- A novel nickel particulate form is provided that efficiently forms a zero-valent nickel complex with a phosphorus-containing ligands in an organic liquid to form a hydrocyanation catalyst. Particles in the nickel particulate form comprise nickel crystallites. For example, the nickel particulate form can have a BET Specific Surface Area of at least about 1 m 2 /gm; an average crystallite size le…
- Who is the assignee on this patent?
- Fraga-Dubreuil Joan, Medhekar Vinay, Micka Thomas A, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification B01J31/22. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jun 09 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).