公开(公告)号：US20210229085A1

公开(公告)日：2021-07-29

申请号：US17053603

申请日：2019-05-20

Applicant: MITSUI CHEMICALS, INC.

Inventor： Yoshiya MATSUKAWA ,  Nobuhiko HORIUCHI ,  Akihiro OKABE ,  Yoshihiro KUBOTA ,  Satoshi INAGAKI

IPC: B01J37/08 ,  C01B39/48 ,  C01B39/06 ,  B01J29/89 ,  C07C37/60

Abstract: There are provided a method for manufacturing a modified aluminosilicate by which a hydroquinone is highly selectively manufactured by reaction of a phenol with hydrogen peroxide, a modified aluminosilicate, and a method for manufacturing an aromatic dihydroxy compound by using the modified aluminosilicate, under industrially advantageous conditions. The method for manufacturing a modified aluminosilicate of the present invention includes a first step of treating an aluminosilicate with an acid, a second step of primarily calcining the treated material obtained in the first step at 550° C. to 850° C., and a third step of contacting the calcined material obtained in the second step with a liquid. containing one or more elements selected from the group consisting of Group 4 elements and. Group 5 elements on. the periodic table, and then drying and secondarily calcining the resultant. The modified aluminosilicate included in the present invention. includes one or more elements selected from the group consisting of Group 4 elements and Group 5 elements on the periodic table, and exhibits an absorbance at 300 nm (A[300]) in an ultraviolet visible spectrum of 1.0 or higher. The method for manufacturing aromatic dihydroxy compounds of the present invention includes a step of reacting a phenol with hydrogen peroxide in the presence of a specific modified. aluminosilicate.

公开(公告)号：US20240216899A1

公开(公告)日：2024-07-04

申请号：US18554677

申请日：2022-04-22

Applicant: MITSUI CHEMICALS, INC.

Inventor： Nobuhiko HORIUCHI ,  Takuma MATSUSHIMA ,  Satoshi AKIYAMA ,  Akihiro OKABE ,  Itsuki IMOTO ,  Keita NAKANISHI ,  Susumu SAITO ,  Yoshihiro KUBOTA ,  Satoshi INAGAKI

IPC: B01J29/89 ,  B01J37/04 ,  B01J37/08 ,  C07C37/08

CPC classification number: B01J29/89 ,  B01J37/04 ,  B01J37/08 ,  C07C37/08 ,  B01J2229/183 ,  B01J2229/37

Abstract: Provided is a method for manufacturing a modified aluminosilicate in which a hydroquinone is highly selectively manufactured by a reaction between a phenol and hydrogen peroxide under industrially advantageous conditions, wherein the manufacturing method includes: a second step for treating an aluminosilicate with an acid; a third step for performing primary calcination of the treatment product obtained in the second step; and a fourth step in which the primary calcined product obtained in the third step and liquid containing one or more elements selected from the group consisting of elements in Group 4 and Group 5 of the Periodic Table are brought into contact with each other, and drying and secondary calcination then performed.

公开(公告)号：US20240009658A1

公开(公告)日：2024-01-11

申请号：US18028141

申请日：2021-09-29

Applicant: MITSUI CHEMICALS, INC.

Inventor： Jun KAWAHARA ,  Naoshi NAGAI ,  Akihiro OKABE ,  Susumu SAITO ,  Shuji TAHARA

IPC: B01J29/44 ,  B01J23/42 ,  B01J37/18 ,  B01J37/02 ,  B01D53/86 ,  A61L9/01 ,  A61L2/232

CPC classification number: B01J29/44 ,  B01J23/42 ,  B01J37/18 ,  B01J37/0201 ,  B01D53/8668 ,  A61L9/01 ,  A61L2/232 ,  B01D2257/70 ,  B01D2257/91 ,  B01D2255/1021

Abstract: A deodorizing catalyst containing a composite oxide and a metal component containing Pt supported on the composite oxide, and having a degree of reduction represented by the following formula (1) in a range of 60% to 86%: degree of reduction (%)=100−[X/Y]×100 (1), in which X represents a peak area obtained from a thermal conductivity detector (TCD) when the catalyst is dried and reduced by heating from 40° C. to 400° C., and Y represents a peak area obtained from the TCD when an oxidation catalyst obtained by heat-treating the catalyst in an air or under oxygen atmosphere at 150° C. for 2 hours and then cooling the catalyst to 40° C. or lower is reduced by heating from 40° C. to 400° C.