以NH₄VO₃和草酸为起始原料制备了纳米片结构的VO₂（B）和VO₂（M），并将所制备材料及V₂O₅应用于3，4-二氯甲苯及2，6-二氯甲苯（DCT）氨氧化制备相应二氯苯腈（DCBN），考察了不同钒氧化物在氨氧化过程中的化学组成和晶型结构变化及其对催化性能的影响。多种表征结果表明，氨氧化后的所有样品均由VO₂（M）、V₂O₅及V₆O₁₃混合相组成。氨氧化测试结果表明，VO₂（B）样品表现出较好的催化性能，获得的3，4-DCBN和2，6-DCBN的产率分别为55.9%和42.7%。

VO₂(B) and VO₂(M) nanosheets are successfully synthesized by using NH₄VO₃ and oxalic acid as starting raw materials.The obtained nanomaterials as well as V₂O₅ are applied for the ammoxidation of 3,4-dichlorotoluene and 2,6-dichlorotoluene (DCT) to make the corresponding dichlorobenzonitrile (DCBN).This study aims to investigate the changes in chemical composition and crystal structure of various vanadium oxides in the ammoxidation process and their effects on the catalytic performance.Various characterization results indicate that all DCBN samples are made up of V₂O₄,V₂O₅ and V₆O₁₃ phases.Catalytic results show that VO₂(B) sample exhibits better catalytic performance and the yielding rates of 3,4-DCBN and 2,6-DCBN over VO₂(B) sample can reach 55.9% and 42.7%,respectively.

董艳玲(1977-),女,硕士,工程师,研究方向为材料复合新技术、高性能陶瓷复合材料,dylmcy@whut.edu.cn