In order to design the relief system size of di-tert-butyl peroxide(DTBP) storage tanks,the runaway re-action of DTBP was simulated by accelerating rate calorimeter(ARC).The results indicated that under adiabatic cond...In order to design the relief system size of di-tert-butyl peroxide(DTBP) storage tanks,the runaway re-action of DTBP was simulated by accelerating rate calorimeter(ARC).The results indicated that under adiabatic conditions the initial exothermic temperature was 102.6 ℃,the maximum self-heating rate was 3.095×107 ℃·min-1,the maximum self-heating temperature was 375.9 ℃,and the pressure produced by unit mass was 4.512 MPa·g-1.Judged by ARC test,the emergency relief system for DTBP was a hybrid system.Based on Design Institute for Emergency Relief System(DIERS) method,the releasing mass flow rate W was determined by Leung methods,and the mass velocity G was calculated by two modified Omega methods.The two relief sizes calculated by monograph Omega method and arithmetic Omega method are close,with only 0.63% relative error.The monograph Omega method is more convenient to apply.展开更多
Comprehensive Summary 2,3-Allenyl amines have shown wide applicability in biomedical and synthetic applications.Due to their enormous potential for applications,researchers have been dedicated to the development of me...Comprehensive Summary 2,3-Allenyl amines have shown wide applicability in biomedical and synthetic applications.Due to their enormous potential for applications,researchers have been dedicated to the development of methods for synthesizing 2,3-allenyl amines.Herein,a palladium-catalyzed three-component reaction of 2-alkynyl-1,4-diol dicarbonates,organoboronic acids,and nitrogen nucleophiles forming 2,3-allenyl amines with excellent regio-and chemo-selectivity has been developed.Substrate compatibility and synthetic applications have been demonstrated.Control experiments supported a mechanism involving 1,2,3-triene-Pd species and methylene-π-allyl palladium species.展开更多
文摘In order to design the relief system size of di-tert-butyl peroxide(DTBP) storage tanks,the runaway re-action of DTBP was simulated by accelerating rate calorimeter(ARC).The results indicated that under adiabatic conditions the initial exothermic temperature was 102.6 ℃,the maximum self-heating rate was 3.095×107 ℃·min-1,the maximum self-heating temperature was 375.9 ℃,and the pressure produced by unit mass was 4.512 MPa·g-1.Judged by ARC test,the emergency relief system for DTBP was a hybrid system.Based on Design Institute for Emergency Relief System(DIERS) method,the releasing mass flow rate W was determined by Leung methods,and the mass velocity G was calculated by two modified Omega methods.The two relief sizes calculated by monograph Omega method and arithmetic Omega method are close,with only 0.63% relative error.The monograph Omega method is more convenient to apply.
基金National Natural Science Foundation of China(No.21988101)is greatly appreciated.
文摘Comprehensive Summary 2,3-Allenyl amines have shown wide applicability in biomedical and synthetic applications.Due to their enormous potential for applications,researchers have been dedicated to the development of methods for synthesizing 2,3-allenyl amines.Herein,a palladium-catalyzed three-component reaction of 2-alkynyl-1,4-diol dicarbonates,organoboronic acids,and nitrogen nucleophiles forming 2,3-allenyl amines with excellent regio-and chemo-selectivity has been developed.Substrate compatibility and synthetic applications have been demonstrated.Control experiments supported a mechanism involving 1,2,3-triene-Pd species and methylene-π-allyl palladium species.
