为解决气固相催化2-甲基萘氧化制备2-萘甲醛反应的复杂性,用等体积浸渍法制备了钒钛基催化剂,促进2-甲基萘合成2-萘甲醛。考察了载体粒径大小、焙烧升温速率以及使用不同的扩孔剂对催化效果的影响。利用FT-IR、SEM、H₂-TPR 和XRD对其进行表征。结果表明,选用T1样品(晶粒尺寸为14.7 nm的锐钛矿TiO₂)为载体,控制焙烧升温速率为5℃/min时,2-萘甲醛的收率较高。此外,选用尿素或PEG 400为扩孔剂能够提高催化剂的低温性能,但对2-萘甲醛的收率没有明显改善。

In order to solve the complexity of the reaction of 2-methylnaphthalene oxidation to 2-naphthalene formaldehyde catalyzed in gas-solid phase,vanadium-titanium based catalyst is prepared via equal volumetric impregnation method to promote the synthesis of 2-naphthalene formaldehyde from 2-methylnaphthalene.The effects of carrier's particle size,heating rate in calcination,and different pore expanding agent on the catalytic effect are investigated.The catalyst is characterized by means of FT-IR,SEM,H₂-TPR and XRD.It is found that the yield of 2-naphthalene formaldehyde is higher when T1 sample (anatase TiO₂ with grain size of 14.7 nm) is used as the carrier,and the heating rate in calcination is controlled at 5℃·min^-1.In addition,urea or PEG400 as pore expanding agent can improve the low temperature performance of the catalyst,but does not improve the yield of 2-naphthalene formaldehyde.

李佳睿(1999-),女,硕士研究生,研究方向为二醇氧化剂的开发及应用,lijiarui617@163.com。