Abstract
The APO-5 zeolites modified with cobalt and some other metals were prepared by the hydrothermal method and applied to the selective oxidation of 4-tert-butyltoluene to 4-tert-butylbenzaldehyde using tert-butylhydroperoxide (TBHP) as the oxidant. The XRD, SEM and FTIR identified the structures of the prepared samples. Influences of the modified metals and various reaction parameters, such as reaction temperature, reaction time, content of catalyst, TBHP/substrate molar ratio and nature of solvent on the activity and selectivity of aldehyde were evaluated. CoAPO-5 exhibited higher catalytic activity than the others and showed a maximum conversion of 4-tert-butyltoluene of 15.5 % with 73.4 % selectivity towards 4-tert-butylbenzaldehyde under the optimized conditions. Repeated runs showed that the catalyst was stable for at least five cycles without obvious changes of catalytic activity and selectivity.
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This work was supported by National Science Foundation of China (21403018) and Prospective Jiont Research Project on the Industry, Education and Research of Jiangsu Province (BY2014037-03).
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Zhou, W., Pan, J., Sun, F. et al. Catalytic oxidation of 4-tert-butyltoluene to 4-tert-butylbenzaldehyde over cobalt modified APO-5 zeolite. Reac Kinet Mech Cat 117, 789–799 (2016). https://doi.org/10.1007/s11144-015-0958-5
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DOI: https://doi.org/10.1007/s11144-015-0958-5