Ruthenium oxide and catalyst comprising same

Patent metadata

Field	Value
Publication number	US-12589382-B2
Application number	US-202318157093-A
Country	US
Kind code	B2
Filing date	Jan 20, 2023
Priority date	Jul 20, 2020
Publication date	Mar 31, 2026
Grant date	Mar 31, 2026

Abstract

The present disclosure relates to a novel ruthenium oxide, a method of preparing the same, and a catalyst for selective hydrogenation of an aromatic compound or an unsaturated compound including the ruthenium oxide.

First claim

We claim:

1 . A ruthenium oxide with a monoclinic structure and
represented by the following Chemical Formula I:
H x RuO 2 ;  [Chemical Formula I]

in Chemical Formula I, 0<x≤4.

2 . The ruthenium oxide of claim 1 ,
wherein the ruthenium oxide includes more than 0 parts by weight to 3 parts by weight or less of hydrogen based on 100 parts by weight of the ruthenium oxide.

3 . The ruthenium oxide of claim 1 ,
wherein diffraction peaks of the ruthenium oxide is observed at respective positions corresponding to incident angles (2θ) of 18.38°<2θ<18.42°, 25.45°<2θ<25.51°, 26.26°<2θ<26.32°, 33.45°<2θ<33.51°, 35.28°<2θ<35.34°, 36.24°<2θ<36.30°, 37.32°<2θ<37.38°, 39.55°<2θ<39.61°, 40.61°<2θ<40.67°, 41.46°<2θ<41.52°, 49.17°<2θ<49.23°, 52.31°<2θ<52.37°, 54.03°<2θ<54.09°, 54.70°<2θ<54.76°, 55.95°<2θ<56.01°, 59.97°<2θ<60.03°, 60.40°<2θ<60.46°, 61.92°<2θ<61.98°, 63.94°<2θ<64.00°, 65.79°<2θ<65.85°, and 69.13°<2θ<69.19° as determined by X-ray powder diffraction measurement (Cu Kα rays).

4 . The ruthenium oxide of claim 1 ,
wherein the ruthenium oxide has a structure of a monoclinic space group P2 1 /c, C2/m, P2/c, C2/c, P2/m or P2 1 /m.

5 . The ruthenium oxide of claim 1 ,
wherein the monoclinic structure has lattice constants of 5 Å≤a≤6 Å, 5 Å≤b≤6 Å and 5 Åb≤c≤6 Å, and a beta (β) angle of 110° to 120°.

6 . The ruthenium oxide of claim 1 ,
wherein the monoclinic structure has lattice constants of a=5.3533 Å, b=5.0770 Å and c=5.3532 Å, and a beta (β) angle of 115.9074°.

7 . A catalyst comprising the ruthenium oxide according to claim 1 ,
wherein the catalyst is used for selective hydrogenation of an aromatic compound or an unsaturated compound.

8 . The catalyst of claim 7 ,
wherein the catalyst is used in the amount of 0.01 part by weight to 10 parts by weight based on 100 parts by weight of the aromatic compound or the unsaturated compound.

9 . The catalyst of claim 7 ,
wherein a pressure range of the hydrogen in the hydrogenation is 0.1 MPa to 10 MPa.

10 . The catalyst of claim 7 ,
wherein a temperature range of the hydrogenation is 20° C. to 200° C.

11 . The catalyst of claim 7 ,
wherein the aromatic compound or the unsaturated compound is a compound containing at least one selected from an alkenyl group, an alkynyl group, and a phenyl group.

12 . The catalyst of claim 11 ,
wherein the aromatic compound or the unsaturated compound includes at least one selected from benzene, toluene, dibenzyltoluene, xylene, phenol, styrene, and n-ethylcarbazole.

Assignees

• Univ Sogang Res & Business Development Found

Inventors

• Hur Nam Hwi
• Yang Hee-Jung

Classifications

• B01J2235/00

  Indexing scheme associated with group B01J35/00, related to the analysis techniques used to determine the catalysts form or properties · CPC title

• B01J2235/15

  X-ray diffraction · CPC title

• B01J35/70

  characterised by their crystalline properties, e.g. semi-crystalline (catalysts comprising carbon B01J21/18; molecular sieves B01J29/00) · CPC title

• C07D209/86 Primary

  with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to carbon atoms of the ring system · CPC title

• C07C2523/46

  Ruthenium, rhodium, osmium or iridium · CPC title