	US 12,251,678 B2
	Liquid phase separation of second-generation sugars by adsorption on FAU zeolite having a Si/Al atomic ratio of less than 1.5
Catherine Laroche, Rueil-Malmaison (FR); Maria Manko, Rueil-Malmaison (FR); and Emmanuelle Bracco, Rueil-Malmaison (FR)
Assigned to IFP Energies Nouvelles, Rueil-Malmaison (FR)
Appl. No. 17/622,895
Filed by IFP Energies Nouvelles, Rueil-Malmaison (FR)
PCT Filed Jun. 11, 2020, PCT No. PCT/EP2020/066156 § 371(c)(1), (2) Date Dec. 27, 2021, PCT Pub. No. WO2020/260028, PCT Pub. Date Dec. 30, 2020.
Claims priority of application No. 1907092 (FR), filed on Jun. 28, 2019.
Prior Publication US 2022/0241749 A1, Aug. 4, 2022
Int. Cl. B01J 20/18 (2006.01); B01D 15/18 (2006.01); C02F 1/28 (2023.01); B01D 15/20 (2006.01); B01D 15/24 (2006.01); C13K 13/00 (2006.01)

CPC B01J 20/18 (2013.01) [B01D 15/185 (2013.01); C02F 1/281 (2013.01); B01D 15/20 (2013.01); B01D 15/24 (2013.01); C13K 13/002 (2013.01); C13K 13/007 (2013.01)]

20 Claims

1. A process for the liquid-phase separation of xylose from a mixture of C5 and C6 sugars comprising at least xylose and glucose, said process comprising:

adsorbing xylose on a zeolitic adsorbent based on FAU-type zeolite crystals having an Si/Al atomic ratio of less than or equal to 1.5 comprising barium;

by bringing said mixture into contact with said adsorbent, by liquid chromatography, to obtain a glucose-enriched liquid phase and a xylose-enriched adsorbed phase; and

recovering said glucose-enriched liquid phase and desorbing said adsorbed phase from said adsorbent by means of a desorption solvent in order to recover xylose.