9,10-Anthraquinone forms a series of molecular complexes with NO and NO 2,which are stable in solid state or in organic solutions at room temperature and will decompose to original anthraquinone and NO/NO 2 upon heati...9,10-Anthraquinone forms a series of molecular complexes with NO and NO 2,which are stable in solid state or in organic solutions at room temperature and will decompose to original anthraquinone and NO/NO 2 upon heating.The molecular complexes are formed via charge transfer,which is confirmed by a high-resolution mass spectroscopy.By means of reduction,the complexes can be converted to anthrahydroquinone.The mechanism of formation is investigated herein.展开更多
The preparation of hydrogen peroxide from anthrahydroquinone by reactive extraction was investigated.The integration process of oxidation of anthrahydroquinone by air and extraction of hydrogen peroxide from the organ...The preparation of hydrogen peroxide from anthrahydroquinone by reactive extraction was investigated.The integration process of oxidation of anthrahydroquinone by air and extraction of hydrogen peroxide from the organic phase with water was carried out in a sieve plate column under pressure.The conversion of anthrahydroquinone increased with increasing pressure resulting in an increase of hydrogen peroxide concentration in the aqueous phase.However,no change in extraction efficiency of hydrogen peroxide was observed.A mathematical model for gas-liquid-liquid reactive extraction was established.In themodel,the effects of pressure and gas superficial velocity on reaction were considered.With increasing gas superficial velocity,the conversion of anthrahydroquinone increased,and the fraction of hydrogen peroxide extracted reached a plateau with a maximum of 72.94%.However,both the conversion of anthrahydroquinone and the fraction of hydrogen peroxide extracted decreased with increasing organic phase superficial velocity.展开更多
基金Supported by Autonomous Research Foundation (DC10040106)Central University Special Research Foundation
文摘9,10-Anthraquinone forms a series of molecular complexes with NO and NO 2,which are stable in solid state or in organic solutions at room temperature and will decompose to original anthraquinone and NO/NO 2 upon heating.The molecular complexes are formed via charge transfer,which is confirmed by a high-resolution mass spectroscopy.By means of reduction,the complexes can be converted to anthrahydroquinone.The mechanism of formation is investigated herein.
文摘The preparation of hydrogen peroxide from anthrahydroquinone by reactive extraction was investigated.The integration process of oxidation of anthrahydroquinone by air and extraction of hydrogen peroxide from the organic phase with water was carried out in a sieve plate column under pressure.The conversion of anthrahydroquinone increased with increasing pressure resulting in an increase of hydrogen peroxide concentration in the aqueous phase.However,no change in extraction efficiency of hydrogen peroxide was observed.A mathematical model for gas-liquid-liquid reactive extraction was established.In themodel,the effects of pressure and gas superficial velocity on reaction were considered.With increasing gas superficial velocity,the conversion of anthrahydroquinone increased,and the fraction of hydrogen peroxide extracted reached a plateau with a maximum of 72.94%.However,both the conversion of anthrahydroquinone and the fraction of hydrogen peroxide extracted decreased with increasing organic phase superficial velocity.
