The oligomerzation reactions on different catalysts were investigated and discussed. 1-Octene, 1-decene, 1-dodecene, a mixture of olefins (with a mass ratio of w(1-octene): w(1-decene):w(1-dodecene) equating to 30:40:...The oligomerzation reactions on different catalysts were investigated and discussed. 1-Octene, 1-decene, 1-dodecene, a mixture of olefins (with a mass ratio of w(1-octene): w(1-decene):w(1-dodecene) equating to 30:40:30), and the products from paraffin cracking were oligomerized on the AlCl3/TiCl4 catalyst. The results indicated that the AlCl3 catalyst led to severe coking reaction. With an increase in carbon number of alpha-olefins, the freezing point of oligomers increased and the kinematic viscosity decreased. The oligomers formed from the mixed olefins and the paraffin cracking products showed higher kinematic viscosity. Normal paraffins contained in the cracked products could increase the freezing point of oligomers. Furthermore, the distillation range of oligomers obtained from the cracked products was close to those of oligomers originated from 1-octene and 1-decene, while the oligomers obtained from the mixed olefins and 1-dodecene had similar distillation ranges.展开更多
BaTiO3是非常常见的铁电材料,经常用于制备铁电光伏器件或与半导体器件相结合来优化光伏器件的光电性能。采用水热法合成了BaTiO3纳米颗粒,并在FTO玻璃上制备了BaTiO3纳米晶薄膜,通过TiCl4水溶液后处理的方法在BaTiO3纳米薄膜上形成不...BaTiO3是非常常见的铁电材料,经常用于制备铁电光伏器件或与半导体器件相结合来优化光伏器件的光电性能。采用水热法合成了BaTiO3纳米颗粒,并在FTO玻璃上制备了BaTiO3纳米晶薄膜,通过TiCl4水溶液后处理的方法在BaTiO3纳米薄膜上形成不同厚度的TiO2层,利用XRD、SEM和TEM分别对BaTiO3@TiO2纳米复合薄膜的物相和形貌进行了表征。将此电极经N719染料敏化后作为染料敏化太阳能电池的光阳极,并进行了光电性能测试。研究结果表明,水热法制备的BaTiO3薄膜晶型为四方相,呈球形多孔,平均粒径约50 nm;经过TiCl4后处理,在BaTiO3薄膜表面形成了锐钛矿相的TiO2颗粒。180℃下水热合成的BaTiO3纳米颗粒经过4次TiCl4后处理制备成的染料敏化太阳能电池取得了最优性能,其光电流密度9.78 mA cm-2,开路电压765 mV,填充因子76.1%和光电转换效率5.69%。展开更多
A versatile and efficient telescoped reaction sequence for the synthesis of tetrahydroisoquinolines(THIQs)is reported that uses TiCl4 to promote cyclization of a benzylaminoacetal derivative and Et3SiH for reduction o...A versatile and efficient telescoped reaction sequence for the synthesis of tetrahydroisoquinolines(THIQs)is reported that uses TiCl4 to promote cyclization of a benzylaminoacetal derivative and Et3SiH for reduction of the intermediate 4-hydroxy-THIQ.This method is complimentary to the classical Pomeranz-Fritsch and related reactions since it tolerates electron-withdrawing substituents and allows access to 8-substituted THIQs.展开更多
以1,3-二氯六甲基三硅烷相继与环戊二烯基钠、正丁基锂和四氯化钛作用合成了1,1′-(六甲基三硅撑)双环戊二烯基二氯化钛(1),1在氨基钠的存在下与对氯苯酚作用制得题目化合物(2).通过元素分析、~1H NMR 和 MS 鉴定了1与2的结构,并对2进行...以1,3-二氯六甲基三硅烷相继与环戊二烯基钠、正丁基锂和四氯化钛作用合成了1,1′-(六甲基三硅撑)双环戊二烯基二氯化钛(1),1在氨基钠的存在下与对氯苯酚作用制得题目化合物(2).通过元素分析、~1H NMR 和 MS 鉴定了1与2的结构,并对2进行 X 射线结构分析确证了其结构.2的晶体属单斜晶系的 P2_1/c 空间群.晶胞参数:a=1.0746(3),b=2.4865(7),c=1.2568(2)nm;β=113.42(2)°;V=3.08137nm^3;Z=4,D_σ(?)=1.305g·cm^(-3).化合物中三个硅原子的桥链发生明显扭曲.通过氧原子中心原子钛与苯环发生共轭,使整个分子形成共轭体系.展开更多
基金the SINOPEC Corporation for the financial support
文摘The oligomerzation reactions on different catalysts were investigated and discussed. 1-Octene, 1-decene, 1-dodecene, a mixture of olefins (with a mass ratio of w(1-octene): w(1-decene):w(1-dodecene) equating to 30:40:30), and the products from paraffin cracking were oligomerized on the AlCl3/TiCl4 catalyst. The results indicated that the AlCl3 catalyst led to severe coking reaction. With an increase in carbon number of alpha-olefins, the freezing point of oligomers increased and the kinematic viscosity decreased. The oligomers formed from the mixed olefins and the paraffin cracking products showed higher kinematic viscosity. Normal paraffins contained in the cracked products could increase the freezing point of oligomers. Furthermore, the distillation range of oligomers obtained from the cracked products was close to those of oligomers originated from 1-octene and 1-decene, while the oligomers obtained from the mixed olefins and 1-dodecene had similar distillation ranges.
文摘BaTiO3是非常常见的铁电材料,经常用于制备铁电光伏器件或与半导体器件相结合来优化光伏器件的光电性能。采用水热法合成了BaTiO3纳米颗粒,并在FTO玻璃上制备了BaTiO3纳米晶薄膜,通过TiCl4水溶液后处理的方法在BaTiO3纳米薄膜上形成不同厚度的TiO2层,利用XRD、SEM和TEM分别对BaTiO3@TiO2纳米复合薄膜的物相和形貌进行了表征。将此电极经N719染料敏化后作为染料敏化太阳能电池的光阳极,并进行了光电性能测试。研究结果表明,水热法制备的BaTiO3薄膜晶型为四方相,呈球形多孔,平均粒径约50 nm;经过TiCl4后处理,在BaTiO3薄膜表面形成了锐钛矿相的TiO2颗粒。180℃下水热合成的BaTiO3纳米颗粒经过4次TiCl4后处理制备成的染料敏化太阳能电池取得了最优性能,其光电流密度9.78 mA cm-2,开路电压765 mV,填充因子76.1%和光电转换效率5.69%。
基金financial support from Drug Innovation Major Project(No.2018ZX09711-001-005)CAMS Collaborative Innovation Project(No.2017-I2M-2-004)。
文摘A versatile and efficient telescoped reaction sequence for the synthesis of tetrahydroisoquinolines(THIQs)is reported that uses TiCl4 to promote cyclization of a benzylaminoacetal derivative and Et3SiH for reduction of the intermediate 4-hydroxy-THIQ.This method is complimentary to the classical Pomeranz-Fritsch and related reactions since it tolerates electron-withdrawing substituents and allows access to 8-substituted THIQs.
文摘以1,3-二氯六甲基三硅烷相继与环戊二烯基钠、正丁基锂和四氯化钛作用合成了1,1′-(六甲基三硅撑)双环戊二烯基二氯化钛(1),1在氨基钠的存在下与对氯苯酚作用制得题目化合物(2).通过元素分析、~1H NMR 和 MS 鉴定了1与2的结构,并对2进行 X 射线结构分析确证了其结构.2的晶体属单斜晶系的 P2_1/c 空间群.晶胞参数:a=1.0746(3),b=2.4865(7),c=1.2568(2)nm;β=113.42(2)°;V=3.08137nm^3;Z=4,D_σ(?)=1.305g·cm^(-3).化合物中三个硅原子的桥链发生明显扭曲.通过氧原子中心原子钛与苯环发生共轭,使整个分子形成共轭体系.
