公开(公告)号：US20230141512A1

公开(公告)日：2023-05-11

申请号：US17918591

申请日：2020-04-23

Applicant: Chiyoda Corporation

Inventor： Yoshimi OKADA ,  Kenichi IMAGAWA ,  Masashi SAITO ,  Kenta FUKUDOME ,  Haruto KOBAYASHI

IPC: B01J23/58 ,  B01J27/02 ,  B01J21/04 ,  B01J35/10 ,  B01J35/00 ,  B01J37/02 ,  B01J37/18 ,  C07C5/367

CPC classification number: B01J23/58 ,  B01J27/02 ,  B01J21/04 ,  B01J35/1019 ,  B01J35/1038 ,  B01J35/1061 ,  B01J35/008 ,  B01J37/0201 ,  B01J37/0236 ,  B01J37/18 ,  C07C5/367 ,  C07C2523/58 ,  C07C2521/04

Abstract: To provide a uniform-type platinum-loaded alumina catalyst demonstrating excellent performance in terms of catalyst life, a uniform-type platinum-loaded alumina catalyst includes: an alumina carrier; sulfur or a sulfur compound dispersed over an entire cross section of the alumina carrier; platinum dispersed and loaded over the entire cross section of the alumina carrier; one or more alkali metals selected from the group consisting of sodium, potassium, and calcium. Preferably, the content of platinum is 0.05 to 5.0 wt % calculated as elemental platinum. The content of the sulfur or the sulfur compound preferably is 0.15 to 5.0 wt % calculated as elemental sulfur. The content of the alkali metal preferably is 0.1 to 5.0 wt % calculated as elemental alkali metal.

公开(公告)号：US20230148027A1

公开(公告)日：2023-05-11

申请号：US17918661

申请日：2020-04-23

Applicant: Chiyoda Corporation

Inventor： Yoshimi OKADA ,  Kenichi IMAGAWA ,  Masashi SAITO ,  Kenta FUKUDOME ,  Haruto KOBAYASHI

IPC: B01J23/652 ,  B01J21/04 ,  B01J35/00 ,  B01J37/18 ,  C07C5/367

CPC classification number: B01J23/6525 ,  B01J21/04 ,  B01J35/008 ,  B01J37/18 ,  C07C5/367

Abstract: To provide an egg shell-type platinum-loaded alumina catalyst demonstrating excellent performance in terms of catalyst life, an egg shell-type platinum-loaded alumina catalyst includes: an alumina carrier; platinum dispersed and loaded on an outer shell of the alumina carrier; and one or more second components selected from the group consisting of vanadium, chromium, molybdenum, and phosphorus. Preferably, the content of platinum is 0.05 to 5.0 wt % calculated as elemental platinum. The content of each second component preferably is 0.1 to 5.0 wt % calculated as each element. The alumina carrier has a surface area of 150 m2/g or more, a pore volume of 0.40 cm3/g or more, and an average pore diameter of 40 to 300 Å, with pores having a pore diameter in a range of ±30 Å from the average pore diameter occupying 60% or more of a total pore volume.

公开(公告)号：US20170369793A1

公开(公告)日：2017-12-28

申请号：US15700089

申请日：2017-09-09

Applicant: CHIYODA CORPORATION

Inventor： Kenichi IMAGAWA ,  Haruto KOBAYASHI ,  Akihiro MUTO ,  Shinichi INOUE

IPC: C10G45/48 ,  B01J23/755 ,  C01G53/04 ,  C07C5/10 ,  G01N23/20 ,  C01F7/02 ,  C01G23/04

Abstract: A hydrogenation catalyst with a small amount of supported metal that is excellent in stability and inhibition of side reactions is provided. The catalyst hydrogenates an aromatic hydrocarbon compound into an alicyclic hydrocarbon compound, and a Group X metal represented by nickel is supported in a composite support including at least alumina and titania. The composite support preferably includes at least an alumina substrate coated with titania. It is also preferable that the Group X metal is prereduced by hydrogen. In the case that the Group X metal is nickel, the nickel content is preferably 5-35 wt % as nickel oxide in the catalyst. The substrate includes, for example, a porous structure formed by a plurality of needle-shaped or column-shaped intertwined three-dimensionally.