Extractive distillation is an effective method for separating azeotropic or close boiling point mixtures by adding a third component.Various technologies for performing the extractive distillation process have been ex...Extractive distillation is an effective method for separating azeotropic or close boiling point mixtures by adding a third component.Various technologies for performing the extractive distillation process have been explored to protect the environment and save resources.This paper focuses on the improvement of these advanced technologies in recent years.Extractive distillation is retrieved and analyzed from the view of phase equilibrium,selection of solvent in extractive distillation,process design,energy conservation,and dynamic control.The quantitative structure–property relationship used in extractive distillation is discussed,and the future development of extractive distillation is proposed to determine how the solvent affects the relative volatility of the separated mixture.In the steady state design,the relationship between the curvature of the residue curve and parameters of the optimal steady state is also highlighted as another field worthy of further study to simplify the distillation process.展开更多
Zeolites,an important class of microporous crystals,have been widely utilized in the fields of catalysis,ion-exchange,separation,and sorption for a long time.In general,zeolites are synthesized in the presence of cost...Zeolites,an important class of microporous crystals,have been widely utilized in the fields of catalysis,ion-exchange,separation,and sorption for a long time.In general,zeolites are synthesized in the presence of costly organic templates under hydrothermal conditions by trial-and-error method,which is not only environmentally unfriendly but also labor-intensive.In recent years,novel concepts of design for zeolite synthesis,which are sustainable,cheap,simple,and efficient,have been developed.In this review,the recent advances in design for zeolite synthesis will be briefly summarized,mainly including the design of organic templates for directing the formation of zeolites,design of organotemplate-free route for zeolite synthesis,design of solvent-free strategy for zeolite synthesis,design for novel interzeolite transformation,and targeted control of zeolite morphologies.This review might be helpful for developing sustainable routes for targeted synthesis of zeolites in the future.展开更多
基金Supported by the National Natural Science Foundation of China(21676152)
文摘Extractive distillation is an effective method for separating azeotropic or close boiling point mixtures by adding a third component.Various technologies for performing the extractive distillation process have been explored to protect the environment and save resources.This paper focuses on the improvement of these advanced technologies in recent years.Extractive distillation is retrieved and analyzed from the view of phase equilibrium,selection of solvent in extractive distillation,process design,energy conservation,and dynamic control.The quantitative structure–property relationship used in extractive distillation is discussed,and the future development of extractive distillation is proposed to determine how the solvent affects the relative volatility of the separated mixture.In the steady state design,the relationship between the curvature of the residue curve and parameters of the optimal steady state is also highlighted as another field worthy of further study to simplify the distillation process.
基金supported by the National Natural Science Foundation of China(22172141,21802121,21835002,and 92045303)the Fundamental Research Funds for the Central Universities(2021QNA4028)。
文摘Zeolites,an important class of microporous crystals,have been widely utilized in the fields of catalysis,ion-exchange,separation,and sorption for a long time.In general,zeolites are synthesized in the presence of costly organic templates under hydrothermal conditions by trial-and-error method,which is not only environmentally unfriendly but also labor-intensive.In recent years,novel concepts of design for zeolite synthesis,which are sustainable,cheap,simple,and efficient,have been developed.In this review,the recent advances in design for zeolite synthesis will be briefly summarized,mainly including the design of organic templates for directing the formation of zeolites,design of organotemplate-free route for zeolite synthesis,design of solvent-free strategy for zeolite synthesis,design for novel interzeolite transformation,and targeted control of zeolite morphologies.This review might be helpful for developing sustainable routes for targeted synthesis of zeolites in the future.
