A method of purifying an organic solvent is provided. The method includes introducing an organic solvent into a membrane distillation system. The membrane distillation system includes a perfluorodioxole membrane. The method includes performing a distillation technique with the membrane distillation system using the perfluorodioxole membrane to treat and purify the organic solvent.

A method for producing isopropyl alcohol is provided in which propylene is hydrated directly with water to produce isopropyl alcohol, the method including: a distillation step in which crude isopropyl alcohol is distilled; and a filtration step in which the isopropyl alcohol obtained in the distillation step is filtered through a filter having an ion-exchange group.

A method for producing isopropyl alcohol is provided in which propylene is hydrated directly with water to produce isopropyl alcohol, the method including: a distillation step in which crude isopropyl alcohol is distilled; and a filtration step in which the isopropyl alcohol obtained in the distillation step is filtered through a filter having an ion-exchange group.

A carbon-coated transition metal nanocomposite material includes carbon-coated transition metal particles having a core-shell structure. The shell layer of the core-shell structure is a graphitized carbon layer doped with oxygen and/or nitrogen, and the core of the core-shell structure is a transition metal nanoparticle. The nanocomposite material has a structure rich in mesopores, is an adsorption/catalyst material with excellent performance, can be used for catalyzing various hydrogenation reduction reactions, or used as a catalytic-oxidation catalyst useful for the treatment of volatile organic compounds in industrial exhaust gases.

A carbon-coated transition metal nanocomposite material includes carbon-coated transition metal particles having a core-shell structure. The shell layer of the core-shell structure is a graphitized carbon layer doped with oxygen and/or nitrogen, and the core of the core-shell structure is a transition metal nanoparticle. The nanocomposite material has a structure rich in mesopores, is an adsorption/catalyst material with excellent performance, can be used for catalyzing various hydrogenation reduction reactions, or used as a catalytic-oxidation catalyst useful for the treatment of volatile organic compounds in industrial exhaust gases.

Provided is a high-purity isopropyl alcohol in which the concentration of a C7-12 acetal compound is 100 ppb or less on a mass basis, the concentration of the acetal compound in an accelerated test involving heating for 4 hours at 80° C. in a nitrogen atmosphere is increased by a factor of 30 or less with respect to the value thereof prior to heating, and the concentration of the acetal compound is maintained at a value of 100 ppb or less on a mass basis. Also provided is a method for manufacturing said high-purity isopropyl alcohol.

Provided is a high-purity isopropyl alcohol in which the concentration of a C7-12 acetal compound is 100 ppb or less on a mass basis, the concentration of the acetal compound in an accelerated test involving heating for 4 hours at 80° C. in a nitrogen atmosphere is increased by a factor of 30 or less with respect to the value thereof prior to heating, and the concentration of the acetal compound is maintained at a value of 100 ppb or less on a mass basis. Also provided is a method for manufacturing said high-purity isopropyl alcohol.

Processes for converting a hydrocarbon reactant into an alcohol compound and/or a carbonyl compound are disclosed in which the hydrocarbon reactant and a supported transition metal catalyst—containing molybdenum, tungsten, or vanadium—are irradiated with a light beam at a wavelength in the UV-visible spectrum, optionally in an oxidizing atmosphere, to form a reduced transition metal catalyst, followed by hydrolyzing the reduced transition metal catalyst to form a reaction product containing the alcohol compound and/or the carbonyl compound.

Processes for converting a hydrocarbon reactant into an alcohol compound and/or a carbonyl compound are disclosed in which the hydrocarbon reactant and a supported transition metal catalyst—containing molybdenum, tungsten, or vanadium—are irradiated with a light beam at a wavelength in the UV-visible spectrum, optionally in an oxidizing atmosphere, to form a reduced transition metal catalyst, followed by hydrolyzing the reduced transition metal catalyst to form a reaction product containing the alcohol compound and/or the carbonyl compound.

A carbon dioxide reduction reaction electrocatalyst comprises a pyrolyzed copper-based metal-organic framework (MOF) that produces isopropanol from electrochemical reduction of carbon dioxide. A process for producing isopropanol from electrochemical reduction of carbon dioxide comprises applying a potential in an electrochemical cell in the range of about −2V to about −3V versus a silver chloride electrode.