Turkish Journal of Chemistry
DOI
10.55730/1300-0527.3492
Abstract
In this paper, the mesoporous molecular sieve SBA-16 with good dispersion was prepared by hydrothermal method. Under the condition of Si/Mo= 1.0, MoO3/SBA-16 catalysts were prepared by iso-dipping method at 550 °C, 650 °C and 750 °C calcination temperature, which for the synthesis of diphenyl carbonate (DPC) from dimethyl carbonate (DMC) and phenyl acetate (PA) was used, and the uncalcined MoO3/SBA-16 was used as a reference. XRD, TG-DTA, XPS, ICP-MS, FT-IR, BET, SEM and TEM characterization. The effects of calcination temperature and reaction conditions on the catalytic performance of MoO3/SBA-16 in transesterification of DMC and PA were investigated. The results show that the MoO3/SBA-16 catalyst prepared at 550 °C has the best catalytic performance in the reaction of DMC and PA ester exchange, and the catalyst has the best catalytic performance in the appropriate reaction strip (n(PA) = 1.0 mol; n (PA)/n (DMC) = 2.0; m (MoO3/SBA-16) = 6.0g; t = 5.0 h; T = 180 °C), the DMC conversion is 78.5%, and the selectivity of methyl phenyl carbonate (MPC) and DPC is 51.1% and 46.5%, respectively. After five cycles, the catalyst activity decreased and the conversion of DMC decreased from 78.5% to 15.8%. However, its crystal structure remained unchanged. The used catalyst can be easily regenerated by calcination in air at 550 °C for 5 h. The catalytic performance of the regenerated catalyst was almost as high as that of the fresh one.
First Page
1930
Last Page
1945
Recommended Citation
LI, YING and HE, SHUNWU
(2022)
"Study on MoO3/SBA-16 catalyzed transesterification to synthesize diphenyl carbonate,"
Turkish Journal of Chemistry: Vol. 46:
No.
6, Article 15.
https://doi.org/10.55730/1300-0527.3492
Available at:
https://journals.tubitak.gov.tr/chem/vol46/iss6/15