The present invention relates to a method for the recycling of a textile waste (ST) comprising a cellulosic component and a polyester component, comprising the following steps: a depolymerization step (110), comprising submitting the textile waste (ST) to a depolymerization reaction of the polyester component by basic hydrolysis by means of a solvolytic mixture (MS) comprising an alkali metal hydroxide (IMA) and at least one water-soluble organic reaction solvent (SOIR) until obtaining a biphasic mixture (MB) comprising an initial solid phase (ESI), containing a terephthalic acid salt (SAT) and cellulosic fibres, and an initial liquid phase (ELI), containing the water-soluble organic reaction solvent (SOIR): a first step of solid-liquid separation (210), comprising the removal of at least a part of the initial liquid phase (ELI) from the biphasic mixture (MB); a step of treatment with organic solvent (220), wherein said initial solid phase (ESI), following the first step of solid-liquid separation (210), is treated with an organic washing solvent (SOL) until removing, from the initial solid phase (ESI), one or more possible contaminants present therein and obtaining a solid purified phase (ESP) containing the terephthalic acid salt (SAT) and the cellulosic fibres; a second step of solid-liquid separation (230), wherein the solid purified phase (ESP) is separated from the organic washing solvent (SOL) and from the one or more possible contaminants dissolved therein: a step of treatment with water (240)), comprising bringing the solid purified phase (ESP) into contact with washing water (AL) until solubilizing the terephthalic acid salt (SAT) contained therein and obtaining, by the removal of the later, a final solid phase (FSF) comprising said cellulosic fibres.

The present invention relates to a zirconium-based metal organic framework comprising at least a tetravalent zirconium ion (Zr.sup.4+) and a bidentate or tridentate linking ligand bonding the said tetravalent zirconium ion (Zr.sup.4+). Moreover, the present invention also relates to a method for preparing the zirconium-based metal organic framework comprising the steps of: (a) preparing a reaction mixture comprising a zirconium compound, a linking ligand and, optionally, a modulating agent in a solvent; (b) heating the reaction mixture obtained from step (a); and (c) washing a reaction product obtained from step (b) with the solvent and drying the reaction product. The zirconium-based metal organic framework according to the present invention is suitable for using in a process for removing heavy metals in the condensate, especially using in the adsorption, removal, or reduction of arsenic and mercury contents in the condensate.

The present invention relates to a zirconium-based metal organic framework comprising at least a tetravalent zirconium ion (Zr.sup.4+) and a bidentate or tridentate linking ligand bonding the said tetravalent zirconium ion (Zr.sup.4+). Moreover, the present invention also relates to a method for preparing the zirconium-based metal organic framework comprising the steps of: (a) preparing a reaction mixture comprising a zirconium compound, a linking ligand and, optionally, a modulating agent in a solvent; (b) heating the reaction mixture obtained from step (a); and (c) washing a reaction product obtained from step (b) with the solvent and drying the reaction product. The zirconium-based metal organic framework according to the present invention is suitable for using in a process for removing heavy metals in the condensate, especially using in the adsorption, removal, or reduction of arsenic and mercury contents in the condensate.

The method according to this disclosure is a method for separating an unsaturated hydrocarbon having 2 or 3 carbon atoms and a halogenated unsaturated carbon compound formed by replacing at least one of hydrogen atoms included in the unsaturated hydrocarbon with a fluorine atom, from each other and is a method for selectively adsorbing either the unsaturated hydrocarbon or the halogenated unsaturated carbon compound by a porous coordination polymer that includes a metallic ion having a valence of 2 to 4 and an aromatic anion having 1 to 6 aromatic ring(s).

The present invention also relates to a process for preparing a diamine/dicarboxylic acid salt wherein the dicarboxylic acid comprises an aromatic dicarboxylic acid and is provided in a powder form; the diamine is provided in a liquid form gradually dosed to the dicarboxylic acid powder, while keeping the dicarboxylic acid powder in constant movement; the processing temperature is above 0 C. and below the boiling temperature of the diamine and the melting temperature of the acid and the salt, and the reaction mixture comprises at most 5 wt. % of water. The present invention also relates to an anhydrous diamine/dicarboxylic acid salt obtainable by the process according to invention, or any embodiment thereof as described above.

The present invention also relates to a process for preparing a diamine/dicarboxylic acid salt wherein the dicarboxylic acid comprises an aromatic dicarboxylic acid and is provided in a powder form; the diamine is provided in a liquid form gradually dosed to the dicarboxylic acid powder, while keeping the dicarboxylic acid powder in constant movement; the processing temperature is above 0 C. and below the boiling temperature of the diamine and the melting temperature of the acid and the salt, and the reaction mixture comprises at most 5 wt. % of water. The present invention also relates to an anhydrous diamine/dicarboxylic acid salt obtainable by the process according to invention, or any embodiment thereof as described above.

The present invention relates to a process for preparing a porous metal-organic framework by reacting at least one metal compound in which the metal is Be, Mg, Ca, Sr, Ba, Al, Ga or In with at least one at least bidentate organic compound and also the use of such porous metal-organic frameworks.

The present invention relates to a process for preparing a porous metal-organic framework by reacting at least one metal compound in which the metal is Be, Mg, Ca, Sr, Ba, Al, Ga or In with at least one at least bidentate organic compound and also the use of such porous metal-organic frameworks.

Method of obtaining terephthalic acid from waste polyethylene terephthalate by depolymerization with microwave heating of the reaction mixture, and its subsequent purification, wherein, after depolymerization, the mixture of products of the depolymerization reaction is mixed with water, a solid phase is separated from the formed mixture, the obtained solution is extracted with water-immiscible organic solvent and, after separation of phases, dissolved impurities are removed from the aqueous phase by its contact with a sorbent that is then separated, wherein, after separation of the sorbent, terephthalic acid is precipitated from the solution by its acidification and subsequently separated from the formed suspension.

Method of obtaining terephthalic acid from waste polyethylene terephthalate by depolymerization with microwave heating of the reaction mixture, and its subsequent purification, wherein, after depolymerization, the mixture of products of the depolymerization reaction is mixed with water, a solid phase is separated from the formed mixture, the obtained solution is extracted with water-immiscible organic solvent and, after separation of phases, dissolved impurities are removed from the aqueous phase by its contact with a sorbent that is then separated, wherein, after separation of the sorbent, terephthalic acid is precipitated from the solution by its acidification and subsequently separated from the formed suspension.