催化学报

催化学报 ›› 2015, Vol. 36 ›› Issue (7): 1109-1116.DOI: 10.1016/S1872-2067(14)60315-6

• 论文 • 上一篇    下一篇

Selective oxidation of alcohols over nickel zirconium phosphate

Abdol R. Hajipoura,b, Hirbod Karimia,c, Afshin Koohia   

  1. a Pharmaceutical Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan 84156, Iran;
    b Department of Neuroscience, University of Wisconsin, Medical School, Madison, WI 53706-1532, USA;
    c Young Researchers and Elite Club, Shahreza Branch, Islamic Azad University, Shahreza, Iran
  • 收稿日期:2015-01-15 修回日期:2015-02-10 出版日期:2015-06-12 发布日期:2015-07-30
  • 通讯作者: Abdol R. Hajipour Tel: +98-0311-3913262; Fax: +98-0311-3913252; E-mail: haji@cc.iut.ac.ir

Selective oxidation of alcohols over nickel zirconium phosphate

Abdol R. Hajipoura,b, Hirbod Karimia,c, Afshin Koohia   

  1. a Pharmaceutical Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan 84156, Iran;
    b Department of Neuroscience, University of Wisconsin, Medical School, Madison, WI 53706-1532, USA;
    c Young Researchers and Elite Club, Shahreza Branch, Islamic Azad University, Shahreza, Iran
  • Received:2015-01-15 Revised:2015-02-10 Online:2015-06-12 Published:2015-07-30

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摘要：

Nickel zirconium phosphate nanoparticles were found to function as efficient catalysts for the selective oxidation of a wide range of alcohols to their corresponding ketones and aldehydes using H2O2 as an oxidizing agent and without any organic solvents, phase transfer catalysts, or additives. The steric and electronic properties of various substrates had significant influence on the reaction conditions required to achieve acetylation. The results showed that this method can be applied for the chemoselective oxidation of benzyl alcohols in the presence of aliphatic alcohols. The catalyst used in the current study was characterized by ICP-OES, XRD, NH3-TPD, Py-FTIR, N2 adsorption-desorption, SEM and TEM. These analyses revealed that the interlayer distance in the catalyst increased from 0.75 to 0.98 nm when Ni2+ was intercalated between the layers, whereas the crystallinity of the material was reduced. The nanocatalyst could also be recovered and reused at least seven times without any discernible decrease in its catalytic activity. This new method for the oxidation of alcohols has several key advantages, including mild and environmentally friendly reaction conditions, short reaction time, excellent yields and a facile work-up.

关键词: Nickel zirconium phosphate, Nanoparticle, Alcohol oxidation, Solvent-free, Solid catalyst

Abstract:

Nickel zirconium phosphate nanoparticles were found to function as efficient catalysts for the selective oxidation of a wide range of alcohols to their corresponding ketones and aldehydes using H2O2 as an oxidizing agent and without any organic solvents, phase transfer catalysts, or additives. The steric and electronic properties of various substrates had significant influence on the reaction conditions required to achieve acetylation. The results showed that this method can be applied for the chemoselective oxidation of benzyl alcohols in the presence of aliphatic alcohols. The catalyst used in the current study was characterized by ICP-OES, XRD, NH3-TPD, Py-FTIR, N2 adsorption-desorption, SEM and TEM. These analyses revealed that the interlayer distance in the catalyst increased from 0.75 to 0.98 nm when Ni2+ was intercalated between the layers, whereas the crystallinity of the material was reduced. The nanocatalyst could also be recovered and reused at least seven times without any discernible decrease in its catalytic activity. This new method for the oxidation of alcohols has several key advantages, including mild and environmentally friendly reaction conditions, short reaction time, excellent yields and a facile work-up.

Key words: Nickel zirconium phosphate, Nanoparticle, Alcohol oxidation, Solvent-free, Solid catalyst