The invention discloses a process for hydrogenation (alkenes, carbonyl compounds and aromatics) and hydrodeoxygenation (methoxy phenols) of organic molecules using hydrous ruthenium oxide (HRO) and its supported form as a recyclable heterogeneous catalyst in aqueous medium with good yield of desired products (70-100%) under mild reaction conditions.

The invention discloses a process for hydrogenation (alkenes, carbonyl compounds and aromatics) and hydrodeoxygenation (methoxy phenols) of organic molecules using hydrous ruthenium oxide (HRO) and its supported form as a recyclable heterogeneous catalyst in aqueous medium with good yield of desired products (70-100%) under mild reaction conditions.

Use of diverse biomass feedstock in a process for the recovery of target C5 and C6 alditols and target glycols via staged hydrogenation and hydrogenolysis processes is disclosed. Particular alditols of interest include, but are not limited to, xylitol and sorbitol. Various embodiments of the present invention synergistically improve overall recovery of target alditols and/or glycols from a mixed C5/C6 sugar stream without needlessly driving total recovery of the individual target alditols and/or glycols. The result is a highly efficient, low complexity process having enhanced production flexibility, reduced waste and greater overall yield than conventional processes directed to alditol or glycol production.

Use of diverse biomass feedstock in a process for the recovery of target C5 and C6 alditols and target glycols via staged hydrogenation and hydrogenolysis processes is disclosed. Particular alditols of interest include, but are not limited to, xylitol and sorbitol. Various embodiments of the present invention synergistically improve overall recovery of target alditols and/or glycols from a mixed C5/C6 sugar stream without needlessly driving total recovery of the individual target alditols and/or glycols. The result is a highly efficient, low complexity process having enhanced production flexibility, reduced waste and greater overall yield than conventional processes directed to alditol or glycol production.

The invention concerns a process for the transformation of lignocellulosic biomass or cellulose into mono- or poly-oxygenated compounds, in which the lignocellulosic biomass or the cellulose is brought into simultaneous contact with a catalytic system comprising a combination of one or more homogeneous catalysts and one or more heterogeneous catalysts, in the same reaction chamber, in the presence of at least one solvent, said solvent being water alone or as a mixture with at least one other solvent, in a reducing atmosphere, and at a temperature in the range 80 C. to 250 C. and at a pressure in the range 0.5 MPa to 20 MPa.

The invention relates to an adsorbent comprising a zeolite-based phase and a non-zeolite-based phase, said adsorbent having: an outer surface area of less than or equal to 30 m.sup.2.Math.g.sup.1, preferably less than or equal to 20 m.sup.2.Math.g.sup.1, a zeolite-based phase comprising at least one zeolite of FAU structure of X type, and a pore diameter distribution, determined by mercury intrusion according to standard ASTM D 4284-83 and expressed by the volume distribution dV/dlogDHg, in which DHg is the apparent pore diameter and V is the pore volume, the mode of which is between 100 nm and 250 nm, limits inclusive. The invention also relates to a process for preparing the said adsorbent and to the uses thereof, especially for separating xylene isomers.

The invention relates to an adsorbent comprising a zeolite-based phase and a non-zeolite-based phase, said adsorbent having: an outer surface area of less than or equal to 30 m.sup.2.Math.g.sup.1, preferably less than or equal to 20 m.sup.2.Math.g.sup.1, a zeolite-based phase comprising at least one zeolite of FAU structure of X type, and a pore diameter distribution, determined by mercury intrusion according to standard ASTM D 4284-83 and expressed by the volume distribution dV/dlogDHg, in which DHg is the apparent pore diameter and V is the pore volume, the mode of which is between 100 nm and 250 nm, limits inclusive. The invention also relates to a process for preparing the said adsorbent and to the uses thereof, especially for separating xylene isomers.

The disclosure relates to the field of specialty chemicals and methods for their synthesis. In embodiments, the disclosure provides novel multifunctional fatty acid derivative molecules such as e.g., fatty triols, fatty tetrols, dihydroxy fatty acids, etc. The disclosure further provides derivatives of the disclosed multifunctional molecules which are useful e.g., in the production of personal care products, surfactants, detergents, polymers, paints, coatings, and as emulsifiers, emollients, and thickeners in cosmetics and foods, as industrial solvents and plasticizers, etc. The disclosure further provides biochemical pathways, recombinant microorganisms and methods for the biological production of various multifuctional fatty acid derivatives.

The present disclosure provides a method for co-producing a xylitol and a caramel pigment. The method includes: transporting a raw material of a xylose mother liquid in a raw material tank to a filter for filtering impurities to obtain a filtered raw material of the xylose mother liquid, and transporting the filtered raw material of the xylose mother liquid to a nanofiltration membrane device to obtain a decolorized xylose mother liquid; transporting the decolorized xylose mother liquid to a first ion exchange device to obtain an ion exchange liquid; and transporting the ion exchange liquid to a chromatographic separation device and obtaining an extracted liquid and a raffinate liquid; performing a refined hydrogenation process on the extracted liquid through a refined hydrogenation assembly to obtain a crystal xylitol, and performing a browning reaction process on the raffinate liquid through a browning reaction assembly to obtain the caramel pigment.

The present disclosure provides a method for co-producing a xylitol and a caramel pigment. The method includes: transporting a raw material of a xylose mother liquid in a raw material tank to a filter for filtering impurities to obtain a filtered raw material of the xylose mother liquid, and transporting the filtered raw material of the xylose mother liquid to a nanofiltration membrane device to obtain a decolorized xylose mother liquid; transporting the decolorized xylose mother liquid to a first ion exchange device to obtain an ion exchange liquid; and transporting the ion exchange liquid to a chromatographic separation device and obtaining an extracted liquid and a raffinate liquid; performing a refined hydrogenation process on the extracted liquid through a refined hydrogenation assembly to obtain a crystal xylitol, and performing a browning reaction process on the raffinate liquid through a browning reaction assembly to obtain the caramel pigment.