FAST AND SCALABLE METHOD OF PRODUCING MICROPOROUS TEREPHTHALATE OF ZIRCONIUM (IV) Russian patent published in 2020 - IPC B01J20/30 B01J20/22 B01D53/02 

FIELD: technological processes.

SUBSTANCE: invention relates to organometallic coordination compounds with sorption activity and can be used to create adsorbers for CO₂, vapors of organic compounds (benzene) or separation of gas mixtures CO₂/N₂, CO₂/CH₄. Method of producing microporous terephthalate of zirconium (IV) involves the following steps. Dimethylformamide (DMF) and formic acid are mixed in ratio 1:(2÷3), added 0.5÷1 % terephthalic acid and 1÷2 % zirconium salt, the mixture is thermostatically controlled at 80÷150 °C for 10÷50 hours with slow stirring. Obtained precipitate is washed successively with hot DMF, hot water and acetone, then dried at 200–250 °C.

EFFECT: method enables to obtain microporous terephthalate of zirconium (IV) with high output (up to 80–90 %), high specific surface area (more than 1,500 m²/g) and pore volume higher than 0,6 ml/g.

1 cl, 3 dwg, 6 ex