Invention Grant
- Patent Title: Continuous or semi-continuous process for the preparation of ethylene glycol and catalyst system for use therein
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Application No.: US16977740Application Date: 2019-03-14
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Publication No.: US11059768B2Publication Date: 2021-07-13
- Inventor: Jan Cornelis Van Der Waal , Paula Dekker , Jagdeep Singh , Benjamin McKay
- Applicant: Avantium Knowledge Centre B.V.
- Applicant Address: NL Amsterdam
- Assignee: Avantium Knowledge Centre B.V.
- Current Assignee: Avantium Knowledge Centre B.V.
- Current Assignee Address: NL Amsterdam
- Agency: Suiter Swantz pc llo
- Priority: NL2020584 20180314
- International Application: PCT/EP2019/056509 WO 20190314
- International Announcement: WO2019/175362 WO 20190919
- Main IPC: C07C29/132
- IPC: C07C29/132 ; B01J19/00 ; B01J19/24 ; B01J23/30 ; B01J23/46 ; C07C31/20
Abstract:
A continuous or semi-continuous process for the preparation of ethylene glycol from a carbohydrate source including:
reacting, in a reactor, at a temperature in the range from equal to or more than 170° C. to equal to or less than 270° C., at least a portion of a carbohydrate source in the presence of hydrogen, a solvent, and a catalyst system, to yield ethylene glycol;
wherein the catalyst system includes:
a homogeneous catalyst, which homogeneous catalyst contains tungsten; and
a heterogeneous catalyst, which heterogeneous catalyst contains one or more transition metals from groups 8, 9 and 10 of the Periodic Table of the Elements supported on a carrier; and
wherein continuously or periodically additional heterogeneous catalyst is added to the reactor.
Further described is a catalyst system that can be used in such a process.
reacting, in a reactor, at a temperature in the range from equal to or more than 170° C. to equal to or less than 270° C., at least a portion of a carbohydrate source in the presence of hydrogen, a solvent, and a catalyst system, to yield ethylene glycol;
wherein the catalyst system includes:
a homogeneous catalyst, which homogeneous catalyst contains tungsten; and
a heterogeneous catalyst, which heterogeneous catalyst contains one or more transition metals from groups 8, 9 and 10 of the Periodic Table of the Elements supported on a carrier; and
wherein continuously or periodically additional heterogeneous catalyst is added to the reactor.
Further described is a catalyst system that can be used in such a process.
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