5 results about "Sodium Glycollate" patented technology

The present invention relates to a process for depolymerising polyethylene terephthalate (“PET”), in which method PET is reacted with sodium glycolate or potassium glycolate, which has been obtained by reactive distillation, to form a mixture M1 including Bis(2-hydroxyethyl) terephthalate (“BHET”). The process according to the invention is distinguished by the fact that BHET makes up a particularly high proportion of the decomposition products in the mixture M1. The process according to the invention thus provides a high yield of BHET that can be used directly for producing PET again. The present invention thus also relates to a process for recycling PET, in which the BHET obtained in the process for depolymerising PET is polymerised again to form PET, optionally after being further purified from M1.

A powder composition including at least a poly(vinyl alcohol) polymer, a crosslinker, calcium silicate, sodium starch glycolate, and a water-containing liquid, is described. A play compound including the powder composition and a second water-containing liquid is also described. A method of forming a play compound including the steps of forming a powder composition having a poly(vinyl alcohol) polymer, a crosslinker, calcium silicate, sodium starch glycolate, and a first water-containing liquid; and mixing the powder composition and a second water-containing liquid, is also described.

The invention relates to the technical field of microorganisms, in particular to a method for promoting generation of ackermania muciniphila characteristic metabolites, which comprises the following steps: (1) preparing a glucose-free basal culture medium which is composed of aqueous solutions of the following components with concentration: 2.0-2.5 g / L of sodium chloride and 0.2-0.5 g / L of sodium thioglycolate; (2) adding lambda-carrageenan into the basic culture medium; and (3) inoculating the ackermania muciniphila to the basic culture medium for culturing. The method disclosed by the invention has the beneficial effects that the key metabolites propionic acid, oleoyl ethanolamine and N-alpha-acetyl lysine of the Akk bacteria under the lambda-carrageenan carbon source system are remarkably increased, the metabolic activity of the Akk bacteria and the metabolic steady state regulation potential of a host can be remarkably improved, and a theoretical basis and a technical support are provided for the development of functional metabolite products.

The invention relates to the technical field of efficient separation and purification of an electrocatalytic oxidation ethylene glycol anode product. More specifically, the invention relates to a separation and purification method of an ethylene glycol electrocatalytic oxidation anode product. The method comprises the following steps: S1, introducing anolyte subjected to ethylene glycol electrocatalytic oxidation reaction into a salt chamber of a double-compartment bipolar membrane device comprising the salt chamber and an alkali chamber; s2, under the driving of a direct-current electric field, recovering a salt recovery solution containing sodium glycolate and ethylene glycol in the salt chamber; s3, introducing the salt recovery liquid into a concentrated chamber of a reverse osmosis membrane device comprising the concentrated chamber and a diluted chamber, and recovering a concentrated chamber solution containing sodium glycolate in the concentrated chamber under the action of reverse osmosis pressure; and S4, the concentrated chamber solution is introduced into a salt chamber of a three-compartment bipolar membrane device comprising an acid chamber, the salt chamber and an alkali chamber which are sequentially arranged, and under the driving of a direct-current electric field, glycolate radicals penetrate through an anion exchange membrane and enter the acid chamber to generate glycolic acid.

This invention discloses a method for separating glycolic acid based on a kilowatt-level fuel cell stack and solubility differences, belonging to the field of electrochemical synthesis and chemical separation technology. This invention uses ethylene glycol as a raw material and employs a zero-gap anion exchange membrane kilowatt-level continuous flow fuel cell stack in a PdAu / Ni... 1‑x An electro-oxidation reaction is carried out under O-anode catalysis to obtain a mixture containing sodium glycolate. After acidification and ethyl acetate extraction to recover ethylene glycol, high-purity glycolate is obtained by evaporation crystallization and low-temperature cooling crystallization, taking advantage of the temperature response difference in solubility between glycolic acid and sodium chloride. The fuel cell stack of this invention can operate stably at a current density of 0.5~1.0 A / cm², with a power >1 kW; the separated glycolate has high purity. This invention couples hydrogen production with the co-production of value-added glycolate, solving the technical problems of difficult scale-up and low separation purity, and is suitable for industrial-scale green preparation of glycolate.