以苯酚、丙酮为原料,以自制Keggin型配合物[(CH2)5NH2]4SiW12O40为催化剂,催化合成双酚A,并对目标产物进行了熔点测定、元素分析和红外光谱(IR)分析。考察了酚酮摩尔比、催化剂用量、反应时间等因素对双酚A收率的影响。结果表明:丙酮6 m...以苯酚、丙酮为原料,以自制Keggin型配合物[(CH2)5NH2]4SiW12O40为催化剂,催化合成双酚A,并对目标产物进行了熔点测定、元素分析和红外光谱(IR)分析。考察了酚酮摩尔比、催化剂用量、反应时间等因素对双酚A收率的影响。结果表明:丙酮6 m L(0.08 mol),n(苯酚):n(丙酮):n(催化剂)=4∶1∶0.04,甲苯45 m L,反应温度40℃,反应时间2 h,目标产物收率达到70%以上。展开更多
The title compound H2SiW12O40·(CH3)2NH was synthesized in mixed solvent of aqueous and acetonitrile, and its crystal structure had been determined using single crystal X ray diffraction. The crystal belongs to mo...The title compound H2SiW12O40·(CH3)2NH was synthesized in mixed solvent of aqueous and acetonitrile, and its crystal structure had been determined using single crystal X ray diffraction. The crystal belongs to monoclinic, space group C2/m, a=2.0654(4)nm, b=1.3306(3)nm, c=1.3194(3)nm, β=119.59(3)°, V=3.1531(11)nm3, Dc=3.606Mg·m-3, Z=2, R=0.0462, Rw=0.0836. The title compound comprises of a 2+ unit, a polyanion and a free (CH3)2NH molecule. The ESR spectrum of the title compound shows that charge transfer between organic groups and polyanion takes place under irradiation of the sunlight in solid state. The TG study of the title compound shows that it had four stages of the weight loss, and the increase of the decomposition temperature for the polyanion shows that the stability of the polyanion was enhanced due to the influence of Zn2+ ion. CCDC:175866.展开更多
以苯酚、丙酮为原料,以自制的多金属氧酸盐[(CH_2)_5NH_2]_5BW_(12)O_(40)为催化剂,催化制备双酚A,对双酚A进行熔点测定和红外光谱(IR)分析。探索了酚酮摩尔比、催化剂用量、反应时间等因素对双酚A收率的影响。实验结果表明:溶剂甲苯45 ...以苯酚、丙酮为原料,以自制的多金属氧酸盐[(CH_2)_5NH_2]_5BW_(12)O_(40)为催化剂,催化制备双酚A,对双酚A进行熔点测定和红外光谱(IR)分析。探索了酚酮摩尔比、催化剂用量、反应时间等因素对双酚A收率的影响。实验结果表明:溶剂甲苯45 m L,丙酮6 m L(0.08 mol),最佳反应温度45℃,最佳反应时间2.5 h,n(丙酮):n(苯酚):n(催化剂)=1:4:0.03,产物收率达到75%以上。展开更多
文摘以苯酚、丙酮为原料,以自制Keggin型配合物[(CH2)5NH2]4SiW12O40为催化剂,催化合成双酚A,并对目标产物进行了熔点测定、元素分析和红外光谱(IR)分析。考察了酚酮摩尔比、催化剂用量、反应时间等因素对双酚A收率的影响。结果表明:丙酮6 m L(0.08 mol),n(苯酚):n(丙酮):n(催化剂)=4∶1∶0.04,甲苯45 m L,反应温度40℃,反应时间2 h,目标产物收率达到70%以上。
文摘The title compound H2SiW12O40·(CH3)2NH was synthesized in mixed solvent of aqueous and acetonitrile, and its crystal structure had been determined using single crystal X ray diffraction. The crystal belongs to monoclinic, space group C2/m, a=2.0654(4)nm, b=1.3306(3)nm, c=1.3194(3)nm, β=119.59(3)°, V=3.1531(11)nm3, Dc=3.606Mg·m-3, Z=2, R=0.0462, Rw=0.0836. The title compound comprises of a 2+ unit, a polyanion and a free (CH3)2NH molecule. The ESR spectrum of the title compound shows that charge transfer between organic groups and polyanion takes place under irradiation of the sunlight in solid state. The TG study of the title compound shows that it had four stages of the weight loss, and the increase of the decomposition temperature for the polyanion shows that the stability of the polyanion was enhanced due to the influence of Zn2+ ion. CCDC:175866.
文摘以苯酚、丙酮为原料,以自制的多金属氧酸盐[(CH_2)_5NH_2]_5BW_(12)O_(40)为催化剂,催化制备双酚A,对双酚A进行熔点测定和红外光谱(IR)分析。探索了酚酮摩尔比、催化剂用量、反应时间等因素对双酚A收率的影响。实验结果表明:溶剂甲苯45 m L,丙酮6 m L(0.08 mol),最佳反应温度45℃,最佳反应时间2.5 h,n(丙酮):n(苯酚):n(催化剂)=1:4:0.03,产物收率达到75%以上。
