氧化铝对固体超强酸催化萘齐聚反应的影响

APPLICATION OF SOLID SUPERACID SO_4^(2-)/ZrO_2-Al_2O_3 TO NAPHTHALENE OLIGOMERIZATION

按不同 Zr/Al将 Al2 O3 引入 SO42 -/Zr O2 中制备固体超强酸催化剂 SO42 -/Zr O2 -Al2 O3 ,并将所得固体超强酸应用到萘齐聚反应中以制备中间相沥青 .用热台偏光显微镜观察了固体超强酸 SO42 -/Zr O2 及 SO42 -/Zr O2 - Al2 O3 在焙烧过程中形态结构变化及晶相转变过程 .研究发现 ,Al2 O3 引入量对固体超强酸 SO42 -/Zr O2 - Al2 O3 晶相转变温度产生影响 ;适量 Al2 O3 的引入使催化剂中 SO42 -分解温度有较大提高 ;催化剂的 TG- DTG曲线也有所变化 .固相超强酸焙烧温度和引入 Al2 O3 比例影响了萘转化率 .红外光谱分析表明 。

Solid superacid SO 4 2-/ZrO 2-Al 2O 3 was prepared by the introducing of Al 2O 3 to SO 4 2-/ZrO 2,Naphthalene oligomerization was catalyzed by SO 4 2-/ZrO 2 and SO 4 2-/ZrO 2-Al 2O 3 synthesize mesophase pitch.The crystal transition and morphology change of solid superacid SO 4 2-/ZrO 2 and SO 4 2-/ZrO 2-Al 2O 3 were observed with polarized microscope when they were calcinated.The proportion of Al 2O 3 in SO 4 2-/ZrO 2-Al 2O 3 exhibited influence on crystal transition temperature.It was also revealed that decomposing temperature of SO 4 2- increased sharply and its TG/DTG curve changed due to Al 2O 3 introducing.Superacid calcination temperature and the quantity of introduced Al 2O 3 had effects on catalyst properties and naphthalene oligomerization.It was concluded that two kinds of ologomerization have similar configuration by IR spectra analysis of oligomerizations.