The Diels Alder cycloaddition is one of the best methods for Fullerene organic.We study the reaction of 2,3 bis(bromomethyl) quinoxaline with Fullerene derivatives.The resulting cycloadduct Fullerene phenazine is stab...The Diels Alder cycloaddition is one of the best methods for Fullerene organic.We study the reaction of 2,3 bis(bromomethyl) quinoxaline with Fullerene derivatives.The resulting cycloadduct Fullerene phenazine is stable enough to allow for isolation,storage,and further manipulations.展开更多
为了提高芳烃的选择性产率和减少催化剂的积碳,以生物基呋喃为原料,以甲醇为耦合试剂进行催化共热解,探讨工艺条件对芳烃的选择性产率的影响,同时对其转化路径以及催化剂的积碳进行分析。结果表明:呋喃与甲醇耦合协同催化共热解可以有...为了提高芳烃的选择性产率和减少催化剂的积碳,以生物基呋喃为原料,以甲醇为耦合试剂进行催化共热解,探讨工艺条件对芳烃的选择性产率的影响,同时对其转化路径以及催化剂的积碳进行分析。结果表明:呋喃与甲醇耦合协同催化共热解可以有效的提高芳烃的选择性产率,二者具有明显的协同效应,甲醇的添加促进了甲醇制烯烃(methanol to olefin,MTO)反应、Diels-Alder环加成反应以及苯烷基化反应的发生,高温促使多烷基化合物以及萘及其同系物选择性产率的增加;强酸性促进了甲醇的脱水以及Diels-Alder环加成反应;同时,羰基抑制了呋喃环和烯烃的Diels-Alder反应,而羟基的存在有效的促进了甲苯以及二甲苯的生成,因此,当采用HZSM-5(SiO2/Al2O3=25)为催化剂,当热解温度为500℃,催化温度为550℃,MF∶甲醇=1∶5,物质的进样量为0.2 mL/min时,其芳烃的选择性产率达到99.73%,积碳量达到11.06%,苯、甲苯、二甲苯以及乙苯的总含量达到40.49%,萘及其同系物的含量仅为10.15%,有效的提高了烷基苯的选择性产率。展开更多
7-chloro-[1,2,3,4]-tetrahydrophenazine-[2,3]-fullerene C60 has been firstly prepared by the Diels-Alder reaction of C60 with 6-chloro-2,3-bis(bromomethyl)-quinoxaline,which is obtained by the condensation reaction of ...7-chloro-[1,2,3,4]-tetrahydrophenazine-[2,3]-fullerene C60 has been firstly prepared by the Diels-Alder reaction of C60 with 6-chloro-2,3-bis(bromomethyl)-quinoxaline,which is obtained by the condensation reaction of 1,4-dibromo-2,3-butanedione with 4-chloro-1,2-phenylene-diamine.The structure of the compound is identified by UV,IR,MS,1H NMR and 13C NMR.展开更多
文摘The Diels Alder cycloaddition is one of the best methods for Fullerene organic.We study the reaction of 2,3 bis(bromomethyl) quinoxaline with Fullerene derivatives.The resulting cycloadduct Fullerene phenazine is stable enough to allow for isolation,storage,and further manipulations.
文摘为了提高芳烃的选择性产率和减少催化剂的积碳,以生物基呋喃为原料,以甲醇为耦合试剂进行催化共热解,探讨工艺条件对芳烃的选择性产率的影响,同时对其转化路径以及催化剂的积碳进行分析。结果表明:呋喃与甲醇耦合协同催化共热解可以有效的提高芳烃的选择性产率,二者具有明显的协同效应,甲醇的添加促进了甲醇制烯烃(methanol to olefin,MTO)反应、Diels-Alder环加成反应以及苯烷基化反应的发生,高温促使多烷基化合物以及萘及其同系物选择性产率的增加;强酸性促进了甲醇的脱水以及Diels-Alder环加成反应;同时,羰基抑制了呋喃环和烯烃的Diels-Alder反应,而羟基的存在有效的促进了甲苯以及二甲苯的生成,因此,当采用HZSM-5(SiO2/Al2O3=25)为催化剂,当热解温度为500℃,催化温度为550℃,MF∶甲醇=1∶5,物质的进样量为0.2 mL/min时,其芳烃的选择性产率达到99.73%,积碳量达到11.06%,苯、甲苯、二甲苯以及乙苯的总含量达到40.49%,萘及其同系物的含量仅为10.15%,有效的提高了烷基苯的选择性产率。
文摘7-chloro-[1,2,3,4]-tetrahydrophenazine-[2,3]-fullerene C60 has been firstly prepared by the Diels-Alder reaction of C60 with 6-chloro-2,3-bis(bromomethyl)-quinoxaline,which is obtained by the condensation reaction of 1,4-dibromo-2,3-butanedione with 4-chloro-1,2-phenylene-diamine.The structure of the compound is identified by UV,IR,MS,1H NMR and 13C NMR.
