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- Title
Catalytic performances of VPO/SBA-15 catalysts for ammoxidation of dichlorotoluenes.
- Authors
Zhao, Dongmei; Tang, Wanjun; You, Qingliang; Li, Tingcheng; Sun, Lang; Xie, Guangyong
- Abstract
Vanadium phosphorus oxide (VPO) was immobilized on SBA-15 via a facile impregnation process. The structure and VPO species on SBA-15 were characterized by XRD, TEM, BET, FTIR and XPS techniques. It was found the VPO/SBA-15 catalysts maintained the two-dimensional hexagonal structure of SBA-15, and the supported VPO species existed in a highly dispersed amorphous state. VPO/SBA-15 catalyst was tested for the ammoxidation of dichlorotoluenes (DCTs) to corresponding dichlorobenzonitriles (DCNs) in a lab-scale tube reactor. Compared with VPO/SiO2 (large-pore silica-supported VPO), VPO/SBA-15 exhibited appreciable enhancement in the catalytic performance due to the unique channel structure of SBA-15. The yield and selectivity toward 2,4-DCN increased by 7% and 6%, while toward the sterically hindered 2,6-DCN increased by 7% and 13%, respectively.
- Subjects
AMMOXIDATION; CATALYST testing; CATALYSTS; VANADIUM oxide; X-ray diffraction
- Publication
Research on Chemical Intermediates, 2023, Vol 49, Issue 10, p4367
- ISSN
0922-6168
- Publication type
Article
- DOI
10.1007/s11164-023-05107-2