PROCESS FOR THE PRODUCTION OF GLYCOLS
    3.
    发明申请

    公开(公告)号:US20190202760A1

    公开(公告)日:2019-07-04

    申请号:US16322568

    申请日:2017-08-02

    Abstract: The invention provides a process for the preparation of glycols from a saccharide-containing feedstock in a reactor system, said process comprising: i) providing a first feed stream comprising said saccharide-containing feedstock in a first solvent at a N temperature of no more than 160° C.; ii) providing a second feed stream comprising a tungsten-based retro-aldol catalytic species and an alkali metal containing species in a second solvent at a temperature in the range of from 150 to 250° C.; iii) combining the first feed stream and the second feed stream, before they are provided to the reactor system, to form a combined feed stream; iv) providing the combined feed stream to the reactor system and operating the reactor at a temperature in the range of from 150° C. to 250° C.; and v) also contacting the combined feed stream with a hydrogenation catalytic species in the presence of hydrogen, wherein the molar ratio of alkali metal:tungsten in the combined feed stream is in the range of from 0.55 to 6.

    PROCESS FOR THE PRODUCTION OF ALKYLENE GLYCOLS

    公开(公告)号:US20190039979A1

    公开(公告)日:2019-02-07

    申请号:US16076570

    申请日:2017-02-08

    Abstract: The invention provides a process for the production of alkylene glycols, said process comprising providing a feed comprising at least 10 wt % of lignocellulose and/or one or more saccharides, on the basis of the overall feed, in water to a reactor; also providing a feed comprising one or more hydrogen-donating organic solvent species to the reactor; contacting the lignocellulose and/or one or more saccharides in the reactor with a retro-aldol catalyst composition at a temperature in the range of from at least 160 to at most 270° C., wherein the combined solvent system within the reactor comprises in the range of from at least 5 to at most 95 wt % of one or more hydrogen-donating organic solvent species and in the range of from at least 5 to at most 95 wt % of water.

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