A new kind of solid acid based on heteropolyacid proved be a useful catalyst in the synthesis of cyclohexyl formate.The new catalyst HPAS/TiO2-WO3 was based on heteropolyacid supported on mixed metal oxides bymicrowav...A new kind of solid acid based on heteropolyacid proved be a useful catalyst in the synthesis of cyclohexyl formate.The new catalyst HPAS/TiO2-WO3 was based on heteropolyacid supported on mixed metal oxides bymicrowave and ultrasonic method. The catalyst was characterized through TEM,TG-DTA,and IR. Data show that catalyst is very active in synthesis reaction of cyclohexyl formate even at mild temperature. Under optimal conditions,the yield of cyclohexyl formate was about 85.4%.展开更多
By using photoacoustic calorimetry, a photoacoustic measurement system is applied to determine the Co-C bond dissociation energy of n C4H9Co(Salen)H2O, which is 116±8kJ·mol-1. This value is in agreement with...By using photoacoustic calorimetry, a photoacoustic measurement system is applied to determine the Co-C bond dissociation energy of n C4H9Co(Salen)H2O, which is 116±8kJ·mol-1. This value is in agreement with the activation enthalpy of the Co-C bond homolytic cleavage reaction that obtained by the kinetic method.展开更多
文摘A new kind of solid acid based on heteropolyacid proved be a useful catalyst in the synthesis of cyclohexyl formate.The new catalyst HPAS/TiO2-WO3 was based on heteropolyacid supported on mixed metal oxides bymicrowave and ultrasonic method. The catalyst was characterized through TEM,TG-DTA,and IR. Data show that catalyst is very active in synthesis reaction of cyclohexyl formate even at mild temperature. Under optimal conditions,the yield of cyclohexyl formate was about 85.4%.
文摘By using photoacoustic calorimetry, a photoacoustic measurement system is applied to determine the Co-C bond dissociation energy of n C4H9Co(Salen)H2O, which is 116±8kJ·mol-1. This value is in agreement with the activation enthalpy of the Co-C bond homolytic cleavage reaction that obtained by the kinetic method.
