发明名称 |
Nickel form for preparation of catalytic nickel-ligand complexes |
摘要 |
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 m2/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 1015 surface crystallites per gram nickel. A ratio of BET SSA to C50 for the nickel particulate form can be at least about 0.1×109 m/gm and preferably at least about 0.4×109 m/gm. Methods of preparation and use are also provided. |
申请公布号 |
US9050591(B2) |
申请公布日期 |
2015.06.09 |
申请号 |
US201213490177 |
申请日期 |
2012.06.06 |
申请人 |
INVISTA North America S.a.r.l. |
发明人 |
Fraga-Dubreuil Joan;Medhekar Vinay;Micka Thomas A.;Whiston Keith |
分类号 |
B01J31/24;B01J31/18;C07C253/10;C22B23/02;B01J35/00;B01J23/755;B01J35/10 |
主分类号 |
B01J31/24 |
代理机构 |
|
代理人 |
Furr, Jr. Robert B.;Lanzatella Nicholas P. |
主权项 |
1. A nickel particulate form comprising nickel crystallites, wherein the nickel particulate form has a BET Specific Surface Area of at least about 1 m2/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. |
地址 |
Wilmington DE US |