公开(公告)号：US20210187484A1

公开(公告)日：2021-06-24

申请号：US16093211

申请日：2017-04-19

Applicant: INVISTA NORTH AMERICA S.A.R.L.

Inventor： Vinay MEDHEKAR

IPC: B01J23/755 ,  B01J37/14 ,  B01J25/02 ,  B01J35/00 ,  B01J35/02 ,  B01J35/10 ,  B01J37/08 ,  B01J37/18

Abstract: The present invention relates to heterogeneous catalysts and methods of making and using the same. In various embodiments, the present invention provides a method of making a hydrogenation catalyst including particulate nickel metal (Ni(0)). The method includes calcining first nickel(II)-containing particles in an atmosphere including oxidizing constituents to generate second nickel(II)-containing particles. The method also includes reducing the second nickel(II)-containing particles in a reducing atmosphere while rotating or turning the second nickel(II)-containing particles at about 275° C. to about 360° C. for a time sufficient to generate the particulate nickel metal (Ni(0)), wherein the particulate nickel metal (Ni(0)) is free flowing.

公开(公告)号：US20150196900A1

公开(公告)日：2015-07-16

申请号：US14669121

申请日：2015-03-26

Applicant: INVISTA North America S.a.r.l.

Inventor： Joan FRAGA-DUBREUIL ,  Vinay MEDHEKAR ,  Thomas A. MICKA ,  Keith WHISTON

IPC: B01J31/22 ,  C07C253/10

CPC classification number: B01J31/22 ,  B01J23/755 ,  B01J31/1845 ,  B01J31/185 ,  B01J31/2409 ,  B01J35/002 ,  B01J35/006 ,  B01J35/1009 ,  B01J2231/322 ,  B01J2531/007 ,  B01J2531/847 ,  C07C253/10 ,  C22B23/021 ,  Y10T428/2982 ,  C07C255/04

Abstract: 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 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.

Abstract translation: 提供了一种新颖的镍颗粒形式，其有效地与有机液体中的含磷配体形成零价镍络合物以形成氢氰化催化剂。 镍颗粒形式的颗粒包括镍微晶。 例如，镍颗粒形式可以具有至少约1m 2 / gm的BET比表面积; 平均微晶尺寸小于约20-25nm，镍颗粒形式可以具有至少10％的镍形式的微晶可以具有小于约10nm的直径（C10），和/或存在 平均每克镍至少约1015个表面微晶。 镍颗粒形式的BET SSA与C50的比例可以为至少约0.1×10 9 m / gm，优选为至少约0.4×109m / gm。 还提供了制备和使用方法。