A new solid acid catalyst SO42-MoO3TiO2 was prepared.FT-IR data had indicted that the surface of the catalyst had strong acidic centers.FTIR spectra of pyridine absorbed on the surface showed that th...A new solid acid catalyst SO42-MoO3TiO2 was prepared.FT-IR data had indicted that the surface of the catalyst had strong acidic centers.FTIR spectra of pyridine absorbed on the surface showed that the catalyst had Bronsted acid site.The catalyst had high catalytic activity and excellent selectivity in esterification,acetalation and ketal formation as well as no corrosion to the facilities.The catalyst was an enviormentally friendly catalyst.展开更多
制备了 SO_4^(2-)/La_2O_3～TiO_2-HZSM-5超强酸催化剂,用于催化癸二酸和正丁醇的酯化反应,研究了制备条件对催化剂性能的影响。结果表明:La^(3+)浸渍浓度为0.07 mol/L,经110℃烘干后于500℃焙烧3 h 所得催化剂的活性较好。用正交实验...制备了 SO_4^(2-)/La_2O_3～TiO_2-HZSM-5超强酸催化剂,用于催化癸二酸和正丁醇的酯化反应,研究了制备条件对催化剂性能的影响。结果表明:La^(3+)浸渍浓度为0.07 mol/L,经110℃烘干后于500℃焙烧3 h 所得催化剂的活性较好。用正交实验法考察了酯化反应的影响因素,最佳实验条件为:正丁醇/癸二酸(物质的量比)=4:1,反应时间3 h,催化剂用量1.5%(质量分数),酯化率可达98.7%。该催化剂具有良好的重复使用和再生能力。展开更多
文摘A new solid acid catalyst SO42-MoO3TiO2 was prepared.FT-IR data had indicted that the surface of the catalyst had strong acidic centers.FTIR spectra of pyridine absorbed on the surface showed that the catalyst had Bronsted acid site.The catalyst had high catalytic activity and excellent selectivity in esterification,acetalation and ketal formation as well as no corrosion to the facilities.The catalyst was an enviormentally friendly catalyst.
