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Citation: LIU Jie, ZHOU Weiyou, WU Zhong, SUN Fu'an, HE Mingyang, CHEN Qun. Selective Oxidation of Benzyl Alcohol to Benzaldehyde Catalyzed by Co₂/Al/Mg_x Hydrotalcite-like Materials in Liquid Phase[J]. Chinese Journal of Applied Chemistry, ;2015, 32(9): 1033-1039. doi: 10.11944/j.issn.1000-0518.2015.09.150028 shu

Selective Oxidation of Benzyl Alcohol to Benzaldehyde Catalyzed by Co₂/Al/Mg_x Hydrotalcite-like Materials in Liquid Phase

1.
Jiangsu Province Key Laboratory of Fine Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, China

Corresponding author: CHEN Qun,
Received Date: 23 January 2015
Available Online: 23 March 2015
Fund Project: 国家自然科学基金资助项目(21403018) (21403018)

Co₂/Al/Mg_x layered double hydroxides (LDHs) with different Co₂/Al/Mg_x ratios (x=0.5,1,1.5and 2) were prepared and characterized by XRD,SEM,FT-IR,BET and ICP techniques.These catalysts were studied for selective oxidation of benzyl alcohol to benzaldehyde.The results indicate that the selectivity of benzaldehyde increases with increasing of Mg content.Under the optimized condition:0.02 mol of benzyl alcohol,100 mg of Co₂AlMg₁-LDH,0.04 mol of tert-butyl hydroperoxide,8 m L of acetonitrile,reaction temperature 60℃ and reaction time 9 h,the conversion of benzyl alcohol is 39.5% and the selectivity of benzaldehyde reaches 89.2%.The catalysts are reused 5 times without obvious loss of the catalytic activity and selectivity.
- hydrotalcite-like compounds,
- base,
- benzyl alcohol,
- selective oxidation,
- benzaldehyde
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Selective Oxidation of Benzyl Alcohol to Benzaldehyde Catalyzed by Co₂/Al/Mg_x Hydrotalcite-like Materials in Liquid Phase