公开(公告)号：US20210331931A1

公开(公告)日：2021-10-28

申请号：US17269795

申请日：2019-08-06

Applicant: RHODIA OPERATIONS ,  EAST CHINA NORMAL UNIVERSITY

Inventor： Fangzheng SU ,  Stéphane STREIFF ,  Laurent GAREL ,  Peng WU ,  Jianyong YIN ,  Xinqing LU

IPC: C01B39/02 ,  B01J29/70 ,  C01B39/06

Abstract: It relates to a microporous aluminotitanosilicate crystalline zeolite, method of preparation and applications thereof. It extends to a catalytic hydroxylation, by reaction of a compound of formula (I) with H2O2 in the presence of a catalyst comprising the zeolite.

公开(公告)号：US20220306563A1

公开(公告)日：2022-09-29

申请号：US17610761

申请日：2019-06-27

Applicant: RHODIA OPERATIONS

Inventor： Zhen YAN ,  Bright KUSEMA ,  Stéphane STREIFF

IPC: C07C51/235 ,  B01J23/644 ,  B01J23/42 ,  B01J21/18

Abstract: Provided is a method for preparing glycolic acid which comprises oxidizing glycolaldehyde with molecular oxygen in the presence of a solvent and a supported catalyst. Said supported catalyst comprises (i) a noble metal selected from the group consisting of Pt, Pd, Ru and Rh, (ii) Bi and (iii) a support. Advantageously, the supported metallic catalyst is more active than the catalysts used in prior art. Furthermore, the catalyst is more stable at oxygen rich conditions.

公开(公告)号：US20220213018A1

公开(公告)日：2022-07-07

申请号：US17612088

申请日：2019-06-04

Applicant: RHODIA OPERATIONS

Inventor： Zhen YAN ,  Bright KUSEMA ,  Sergio MASTROIANNI ,  Stéphane STREIFF ,  Philippe MARION

IPC: C07C51/27

Abstract: The present invention relates to a method of synthesizing at least one organic acid comprising oxidizing glycolaldehyde with nitric acid in the presence of a solvent. Advantageously, it is an industrially applicable process, which prepares organic acid, notably glycolic acid and/or glyoxylic acid in a high yield based on bio-based feedstocks.

公开(公告)号：US20200231910A1

公开(公告)日：2020-07-23

申请号：US16483206

申请日：2018-01-30

Applicant: RHODIA OPERATIONS

Inventor： Bing HONG ,  Alexander LERCH ,  Armin T. LIEBENS ,  Stéphane STREIFF

IPC: C11D3/39 ,  C11D11/00 ,  C11D3/395 ,  C11D3/10

Abstract: The invention relates to the use of specific amines as bleaching catalyst for detergent compositions and to bleach and detergent compositions containing these. The invention concerns also a formulation comprising at least a detergent, aspecific amine, and optionally a source ofhydrogen peroxide.

公开(公告)号：US20210237040A1

公开(公告)日：2021-08-05

申请号：US15734573

申请日：2018-06-26

Applicant: RHODIA OPERATIONS ,  LE CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE ,  UNIVERSITE DE LILE ,  CENTRALE LILLE INSTITUT

Inventor： Dan WU ,  Vitaly ORDOMSKY ,  Willinton Yesid HERNANDEZ ENCISO ,  Stéphane STREIFF

IPC: B01J27/08 ,  B01J23/42 ,  B01J21/04 ,  B01J23/46 ,  B01J23/44 ,  B01J21/18 ,  B01J37/22 ,  C07D307/42 ,  C07C41/01

Abstract: A process for etherification of aldehydes and/or ketones in the presence of a catalyst and an iodine source. In particular, a process for the synthesis of an ether compound, comprising reacting an aldehyde and/or a ketone with an alcohol, in the presence of (i) a metal/support heterogeneous catalyst and an iodine source, or (ii) a metal-iodine catalyst, in a reactor, whereby the ether compound is obtained. A catalytic system comprising a metal/support heterogeneous catalyst and an iodine source, and a process for its preparation.

公开(公告)号：US20210179975A1

公开(公告)日：2021-06-17

申请号：US16771520

申请日：2017-12-15

Applicant: RHODIA OPERATIONS

Inventor： Bing HONG ,  Alexander LERCH ,  Stéphane STREIFF ,  Peng Fei JI ,  Armin T. LIEBENS

IPC: C11D3/39 ,  C11D17/04 ,  C11D11/00

Abstract: Provided is the use of a lanthanide metal complex as a bleaching catalyst. In particular, the lanthanide metal complex comprises a ligand which is an aromatic compound having at least one electron withdrawing substituent and at least one nucleophilic group. Provided is also a composition containing the lanthanide metal complex.