公开(公告)号：US20250058309A1

公开(公告)日：2025-02-20

申请号：US18721057

申请日：2022-12-12

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Suman Kumar Sen ,  Prashant Patil ,  Surya Prakasa Rao Daliparthi ,  Dwairath Dhar ,  Amit Kumar Mondal ,  Paulus Johannes Maria Eijsbouts ,  Rudolf Martinus Petrus van der Heijden ,  Gert-Jan Schoenmakers ,  Mouli Murukutla

IPC: B01J35/53 ,  B01J35/40 ,  B01J37/00 ,  C07C37/20

Abstract: The present invention relates to a method for carrying out a catalysed chemical reaction using one or more liquid reactants, preferably acetone and phenol to form bisphenol A, in an upflow reactor comprising feeding at least a portion of said reactants to a bottom section of the reactor positioned below a flow distributor plate, passing said portion through the flow distributor plate, passing said portion through a layer of inert particles positioned above and preferably in contact with said flow distributor plate, passing said portion through a catalyst layer comprising a particulate catalyst, said catalyst layer being positioned above and in contact with said layer of inert particles, wherein the reactants react to form a product stream, collecting said product stream via collecting means positioned above said catalyst layer. The invention also relates to a reactor assembly. The catalyst is a core-shell catalyst which is manufactured by graft polymerizing aromatic vinyl compounds onto the hydroxylated and functionalized core particles, followed by sulfonation.

公开(公告)号：US20250058311A1

公开(公告)日：2025-02-20

申请号：US18721053

申请日：2022-12-12

Applicant: SABIC GLOBAL TECHNOLOGIES, B.V.

Inventor： Suman Kumar Sen ,  Prashant Patil ,  Surya Prakasa Rao Daliparthi ,  Dwairath DHAR ,  Amit Kumar Mondal ,  Paulus Johannes Maria Eijsbouts ,  Rudolf Martinus Petrus van der Heijden ,  Gert-Jan Schoenmakers

IPC: B01J37/02 ,  B01J21/08 ,  B01J35/40 ,  B01J35/53 ,  C07C67/42

Abstract: The present invention relates to a method for the manufacture of a core-shell catalyst comprising the steps of a. providing core particles, b. functionalizing at least part of the surface of the core particles with a functionalizing agent thereby forming functionalized core particles, c. graft polymerizing at least one of aromatic vinyl compounds onto the functionalized core particles thereby forming core-shell particles wherein the core is comprised of the core particles and the shell is comprised of graft polymerized aromatic vinyl compounds and d. activating the shell by using a sulfonating agent wherein the core particles comprise or consists of glass particles and wherein the core particles are hydroxylated prior to step b). The present invention further relates to the use of the core-shell catalyst for the manufacture of bisphenol A by reacting phenol with acetone for increasing the selectivity towards the formation of p,p-bisphenol A.