A simulated gasoline consisting of model sulfur compounds of thiophene(C4H4S)and 3-methythiophene (3-MC4H4S)dissolved in n-heptane was tested for the oxidative desulfurization in the hydrogen peroxide(H2O2) and formic...A simulated gasoline consisting of model sulfur compounds of thiophene(C4H4S)and 3-methythiophene (3-MC4H4S)dissolved in n-heptane was tested for the oxidative desulfurization in the hydrogen peroxide(H2O2) and formic acid oxidative system over metal oxide-loaded molecular sieve.The effects of the oxidative system, loaded metal oxides,phase transfer catalyst,the addition of olefin and aromatics on sulfur removal were investi- gated in details.The results showed that the sulfur removal rate of simulated gasoline in the H2O2/formic acid sys- tem was higher than in other oxidative systems.The cerium oxide-loaded molecular sieve was found very active catalyst for oxidation of simulated gasoline in this system.The sulfur removal rates of C4H4S and 3-MC4H4S were enhanced when phase transfer catalyst(PTC)was added.However,the sulfur removal rate of simulated gasoline was reduced with the addition of olefin and aromatics.展开更多
The desulfurization of model gasoline by 5A molecular sieves loaded with Cu2+ was studied.Several factors which influence the desulfurization capability,including temperature,Cu2+ loading,baking temperature,as well as...The desulfurization of model gasoline by 5A molecular sieves loaded with Cu2+ was studied.Several factors which influence the desulfurization capability,including temperature,Cu2+ loading,baking temperature,as well as the ethanethiol concentration were investigated.In the range of adsorption temperature of 20℃45℃,it was found that the sorption capacity of ethanethiol on 5A molecular sieves loaded with Cu2+ increases with the temperature increasing.The desulfurization is enhanced by increasing the Cu2+ loading and the best result is obtained at the Cu2+ loading of 0.16mol/L.Baking of the sorbent can also improve the desulfurization capability,and the optimum baking temperature is 300℃.Two methods of the sorbent regeneration were compared in the experiment,the regeneration by baking is better than that by alcohol washing.展开更多
基金Supported by the National Natural Science Foundation of China （No.20276015） and the Natural Science Foundation of Hebei Province （No.203364）.
文摘A simulated gasoline consisting of model sulfur compounds of thiophene(C4H4S)and 3-methythiophene (3-MC4H4S)dissolved in n-heptane was tested for the oxidative desulfurization in the hydrogen peroxide(H2O2) and formic acid oxidative system over metal oxide-loaded molecular sieve.The effects of the oxidative system, loaded metal oxides,phase transfer catalyst,the addition of olefin and aromatics on sulfur removal were investi- gated in details.The results showed that the sulfur removal rate of simulated gasoline in the H2O2/formic acid sys- tem was higher than in other oxidative systems.The cerium oxide-loaded molecular sieve was found very active catalyst for oxidation of simulated gasoline in this system.The sulfur removal rates of C4H4S and 3-MC4H4S were enhanced when phase transfer catalyst(PTC)was added.However,the sulfur removal rate of simulated gasoline was reduced with the addition of olefin and aromatics.
文摘The desulfurization of model gasoline by 5A molecular sieves loaded with Cu2+ was studied.Several factors which influence the desulfurization capability,including temperature,Cu2+ loading,baking temperature,as well as the ethanethiol concentration were investigated.In the range of adsorption temperature of 20℃45℃,it was found that the sorption capacity of ethanethiol on 5A molecular sieves loaded with Cu2+ increases with the temperature increasing.The desulfurization is enhanced by increasing the Cu2+ loading and the best result is obtained at the Cu2+ loading of 0.16mol/L.Baking of the sorbent can also improve the desulfurization capability,and the optimum baking temperature is 300℃.Two methods of the sorbent regeneration were compared in the experiment,the regeneration by baking is better than that by alcohol washing.
