作者: Tianzhu Zhou , Yue Zhao , Wenmei Han , Huazhong Xie , Cuiping Li
DOI: 10.1039/C7TA02605F
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摘要: One-dimensional polyaniline@halloysite (PANI@HA) nanotubes with enhanced selective oxidation activity of cyclohexene are fabricated by employing aniline (ANI) chemical polymerization on halloysite in situ. By facilely controlling the doping acid, acidity, and ANI/HA weight ratio during fabrication, PANI a controllable degree, redox state, content is grown nanotubes. The result shows that PANI@HA effective catalysts solvent-free reaction system H2O2 as oxidant, their catalytic relies fabrication. synthesized HCl acid to condition acidity at 1 M 2.04 (PANI@HA/1 M/2.04-HCl) demonstrates highest (98.17% conversion 99.50% selectivity 1,2-cyclohexanediol). matches well degree PANI@HA. In addition, optimal 20 mg catalyst, 2.5 mL H2O2, 70 °C, 24 h. Furthermore, PANI@HA/1 M/2.04-HCl exhibits superior dihydroxylation toward 2,3-dimethyl-2-butene cycling performance 99.11% 96.92% 1,2-cyclohexanediol after five cycles. CV indicates attributed reversible for decomposition H2O2.