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1. (WO2018104216) PROCESS FOR THE PREPARATION OF GLYCOLS

Pub. No.:    WO/2018/104216    International Application No.:    PCT/EP2017/081349
Publication Date: Fri Jun 15 01:59:59 CEST 2018 International Filing Date: Tue Dec 05 00:59:59 CET 2017
IPC: C07C 29/132
C07C 29/60
C07C 29/00
C07C 31/20
C07C 31/26
Applicants: SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.
SHELL OIL COMPANY
Inventors: VAN DER HEIDE, Evert
HUIZENGA, Pieter
Title: PROCESS FOR THE PREPARATION OF GLYCOLS
Abstract:
The invention provides a process for the preparation of ethylene glycol and 1, 2-propylene glycol from starting material comprising one or more saccharide, wherein the process comprises the steps of: i) providing the starting material and hydrogen to a first reactor and reacting said starting material and hydrogen therein in the presence of a solvent and a first catalyst system comprising a retro-aldol catalyst composition and a hydrogenation catalyst composition; ii) continuously removing a first reactor product stream from the first reactor, said first reactor product stream comprising ethylene glycol, 1, 2-propylene glycol and in the range of from 2 to 40 wt% of sugar alcohols; iii) contacting said first reactor product stream in a second reactor in the presence of hydrogen with a second catalyst system comprising at least a hydrogenation catalyst composition; and iv) converting a portion of the sugar alcohols in the second reactor into ethylene glycol and/or 1, 2-propylene glycol to provide a second reactor product stream comprising ethylene glycol, 1, 2-propylene glycol and in the range of from 10 to 80% of the amount of sugar alcohols present in the first reactor product stream.