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Citation: CAO Mingming, ZHOU Weiyou, ZHONG Xia, SUN Fu'an, HE Mingyang. Selective Oxidation of Toluene to Benzaldehyde Catalyzed by Co/Al Hydrotalcite-like Materials in Liquid Phase[J]. Chinese Journal of Applied Chemistry, ;2014, 31(5): 541-547. doi: 10.3724/SP.J.1095.2014.30364 shu

Selective Oxidation of Toluene to Benzaldehyde Catalyzed by Co/Al Hydrotalcite-like Materials in Liquid Phase

1.
School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China

Corresponding author: HE Mingyang,
Received Date: 19 July 2013
Available Online: 9 September 2013

Co/Al layered double hydroxides(LDHs) with different Co/Al ratios(Co_x/Al-LDHs,x=2,3 and 4) and their calcined samples(Co_x/Al-LDOs) were prepared and characterized by XRD,FT-IR,BET and ICP techniques.These catalysts were studied for selective oxidation of toluene to benzaldehyde.The results indicate that under the optimized condition(0.6 mL(5.43 mmol) of toluene,100 mg of Co₄/Al-LDO,21.7 mmol of tert-butyl hydroperoxide(TBHP),10 mL of acetonitrile,reaction temperature 70℃,and reaction time 9 h),the conversion of toluene is 8.2% and the selectivity of benzaldehyde is 77.6%.Repeated runs indicate that these catalysts are stable up to 7 cycles without obvious change of the catalytic activity and selectivity.
- hydrotalcite-like compounds,
- toluene,
- selective oxidation,
- benzaldehyde
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