CAJ | 학술논문

采用钛酸丁酯溶胶凝胶法制备一系列不同 Ti ／Al 摩尔比的 Al2 O3-TiO2复合载体，借助 TG-DTG、XRD、FT-IR、SEM-EDS、BET 等手段对载体进行表征．研究表明，钛酸丁酯的浓度直接影响壳层 TiO2的均匀性以及团聚情况．Ti ／Al 的合适摩尔比例为0.02～0.04，此时包覆层比较均匀．随着钛酸丁酯浓度的增加，Al2 O3-TiO2比表面积、孔容逐渐下降，可能由于加入低表面积的 TiO2，阻塞了 Al2 O3孔道．当 pH 范围为1～2，溶胶稳定透明，载体比表面积较大，约为199 m2·g －1．
채용태산정지용효응효법제비일계렬불동 Ti ／Al 마이비적 Al2 O3-TiO2복합재체，차조 TG-DTG、XRD、FT-IR、SEM-EDS、BET 등수단대재체진행표정．연구표명，태산정지적농도직접영향각층 TiO2적균균성이급단취정황．Ti ／Al 적합괄마이비례위0.02～0.04，차시포복층비교균균．수착태산정지농도적증가，Al2 O3-TiO2비표면적、공용축점하강，가능유우가입저표면적적 TiO2，조새료 Al2 O3공도．당 pH 범위위1～2，용효은정투명，재체비표면적교대，약위199 m2·g －1．
A series of Al2 O3-TiO2 composite supporters with different mole ratio of Ti /Al were prepared by sol-gel method.And the samples were characterized by TG/DTG,XRD,FT-IR,SEM-EDS and BET in order to se-lect the optimum synthetic conditions.The experimental results indicated that the uniformity and agglomeration of TiO2 could be changed by the concentration Butyl Titanate when the Ti /Al =0.02,0.04,Al2 O3-TiO2 had u-niform coating layer.With increasing the concentrations of Butyl Titanate,the surface area and pore volume of Al2 O3-TiO2 decreased due to the additon of TiO2 with low surface area.A stable transparent sol was synthesized when pH value was 1 to 2,and the specific surface area of the supporter was about 1 99 m2 ·g -1 .