US 11,746,074 B2
Methods for preparing diol
Jing Liu, Changchun (CN); Hongbin Qi, Changchun (CN); Haiyu Ren, Atlanta, GA (US); Indra Prakash, Alpharetta, GA (US); and Yu Shi, Marietta, GA (US)
Assigned to Changchun Meihe Science and Technology Development Co., LTD, Jilin (CN); and The Coca-Cola Company, Atlanta, GA (US)
Filed by Changchun Meihe Science and Technology Development Co., LTD, Jilin (CN); and The Coca-Cola Company, Atlanta, GA (US)
Filed on Jul. 28, 2021, as Appl. No. 17/387,123.
Application 17/387,123 is a continuation of application No. 16/534,352, filed on Aug. 7, 2019, granted, now 11,104,629.
Application 16/534,352 is a continuation of application No. 15/514,980, granted, now 10,464,870, issued on Nov. 5, 2019, previously published as PCT/CN2015/090321, filed on Sep. 23, 2015.
Claims priority of application No. 201410512704.7 (CN), filed on Sep. 28, 2014.
Prior Publication US 2022/0055974 A1, Feb. 24, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C07C 29/00 (2006.01); B01J 25/02 (2006.01); B01J 27/188 (2006.01); B01J 35/00 (2006.01); C07C 29/132 (2006.01); C07C 29/60 (2006.01); B01J 37/04 (2006.01); B01J 23/835 (2006.01); B01J 23/888 (2006.01); B01J 27/19 (2006.01); C07C 31/20 (2006.01); B01J 23/30 (2006.01); B01J 37/00 (2006.01)
CPC C07C 29/00 (2013.01) [B01J 23/835 (2013.01); B01J 23/888 (2013.01); B01J 23/8885 (2013.01); B01J 25/02 (2013.01); B01J 27/188 (2013.01); B01J 27/19 (2013.01); B01J 35/0006 (2013.01); B01J 37/04 (2013.01); C07C 29/132 (2013.01); C07C 29/60 (2013.01); C07C 31/202 (2013.01); B01J 23/30 (2013.01); B01J 37/0081 (2013.01); B01J 2523/00 (2013.01); Y02P 20/52 (2015.11); Y02P 20/582 (2015.11)] 30 Claims
 
1. A method for preparing a diol, characterized by:
(a) adding an unsupported main catalyst comprising nickel, one or more rare earth elements, tin and aluminium, and optionally i) tungsten, ii) tungsten and molybdenum, or iii) tungsten, molybdenum and boron or phosphorus to a slurry bed reactor;
(b) increasing the reaction system pressure to 5-12 MPa and the reaction temperature to 150-260° C.;
(c) adding a soluble tungstic acid salt cocatalyst, hydrogen and a sugar to the slurry bed reactor, wherein the sugar and cocatalyst are fed continuously into the slurry bed reactor in the form of an aqueous sugar solution having a sugar concentration from 20-60 wt % and further comprising the soluble tungstic acid salt cocatalyst to provide gas and a liquid comprising a diol;
(d) continuously passing the gas and reaction liquid out of the reactor through a filter to intercept catalyst; and
(e) separating the diol from the gas and reaction liquid.