公开(公告)号：US09687836B2

公开(公告)日：2017-06-27

申请号：US14669121

申请日：2015-03-26

申请人： INVISTA North America S.a r.l.

发明人： Joan Fraga-Dubreuil ,  Vinay Medhekar ,  Thomas A. Micka ,  Keith Whiston

IPC分类号： C07C253/10 ,  B01J31/22 ,  B01J31/18 ,  C22B23/02 ,  B01J31/24 ,  B01J35/00 ,  B01J23/755 ,  B01J35/10

CPC分类号： 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

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 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.

公开(公告)号：US10143999B2

公开(公告)日：2018-12-04

申请号：US15525627

申请日：2015-11-11

申请人： INVISTA NORTH AMERICA S.A R.L.

发明人： Joan Fraga-Dubreuil ,  Vinay Medhekar ,  John A. Turner ,  Keith Whiston

IPC分类号： B01J27/043 ,  B01J23/755 ,  B01J31/18 ,  B01J35/00 ,  B01J35/10 ,  C07F9/145 ,  C07F15/04

摘要： Disclosed are nickel-containing complexation precursors having high complexation activity for bidentate phosphite ligands. Also disclosed are methods of making the complexation precursors. The disclosed method of generating the nickel-containing complexation precursor includes including contacting a nickel starting material with a reductant under conditions sufficient to generate a nickel-containing complexation precursor having at least about 1,500 ppmw sulfur in the form of sulfide.

公开(公告)号：US10537885B2

公开(公告)日：2020-01-21

申请号：US15321369

申请日：2015-07-01

申请人： INVISTA NORTH AMERICA S.A R.L.

发明人： Vinay Medhekar

IPC分类号： B22F9/22 ,  B01J31/18 ,  B01J23/755 ,  B01J35/02 ,  B01J35/10 ,  B01J37/04 ,  B01J37/14 ,  B01J37/16 ,  B01J37/18 ,  B01J31/26

摘要： Methods are described herein that involve rotating or gently mixing nickel(II)-containing particles in a reaction vessel while heating the particles and flowing a reducing atmosphere through the reaction vessel for a time sufficient to generate free-flowing nickel metal (Ni(0)) from the nickel(II)-containing particles.