3 results about "Alcohol reduction" patented technology

The application relates to the fine chemical technology field and discloses a method for synthesizing an ultraviolet absorber through an alcohol reduction reaction, and the method steps are as follows: under the action of a MOF-derived copper-nickel-cerium trimetallic catalyst, an azo compound (I) or an intermediate nitroxide (II) is reacted with alcohol R-(OH) n A reduction reaction is generated by heating in a reaction kettle, and a benzotriazole compound (III) is prepared. The application utilizes the reduction characteristics of alcohol, adopts the MOF-derived copper-nickel-cerium trimetallic catalyst, combines the porosity and metal synergistic effect regulated by a structure directing agent, effectively improves the catalytic reduction efficiency and reaction selectivity, and the synthesis method has the advantages of no sewage, low cost, high safety and high yield.

Process for recovering at least one fractional substance from vapours during the alcohol reduction of a beverage, and fractional substance recovery device for carrying out the process, in which an alcoholic beverage to be reduced in alcohol content is supplied to a degasser of a fractional substance recovery device, in which vapours are removed from the degasser and the alcoholic beverage passed through the degasser is supplied to a device for alcohol reduction, in which the vapours are fed to a plurality of fractional condensation stages which follow one another in series and in which at least one fractional substance is separated from the vapours under pressure and / or temperature, and in which the fractional substances separated in the respective fractional condensation stage are collected in a collecting container or are fed to an inoculation station, through which the separated fractional substances are fed in metered quantities to an alcohol-reduced drink.

The present application provides an iodine-mediated alcohol reduction method, which relates to the field of organic chemistry; the method provided by the present application uses H2 as a reducing agent, hydroiodic acid (HI) as a catalyst to catalyze the deoxidization reduction of alcohol; the reaction process is as follows: alcohol, HI and solvent are mixed and put into a batch reaction kettle, H2 is introduced into the reaction kettle, heated to 100-300 DEG C and reacted for 1-24 h, a reduction reaction occurs to generate alkanes; the method is simple and environmentally friendly, the by-product is H2O, and there is no metal catalysis; and benzyl alcohol, linalool, allyl alcohol and derivatives of the three are used as substrates.