催化学报 ›› 2014, Vol. 35 ›› Issue (3): 351-356.DOI: 10.1016/S1872-2067(12)60755-4

• 研究论文 • 上一篇    下一篇

Preparation and characterization of nano-CaO based on eggshell waste:Novel and green catalytic approach to highly efficient synthesis of pyrano[4,3-b]pyrans

Elaheh Mosaddegh, Asadollah Hassankhani   

  1. Department of New Materials, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, PO Box 76315-117, Kerman, Iran
  • 收稿日期:2013-10-11 修回日期:2013-11-22 出版日期:2014-02-26 发布日期:2014-02-26
  • 通讯作者: Elaheh Mosaddegh

Preparation and characterization of nano-CaO based on eggshell waste:Novel and green catalytic approach to highly efficient synthesis of pyrano[4,3-b]pyrans

Elaheh Mosaddegh, Asadollah Hassankhani   

  1. Department of New Materials, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, PO Box 76315-117, Kerman, Iran
  • Received:2013-10-11 Revised:2013-11-22 Online:2014-02-26 Published:2014-02-26
  • Contact: Elaheh Mosaddegh

摘要:

Nano-CaO was prepared by calcination of ball-milled chicken eggshell waste. This novel, bioactive, heterogeneous catalyst, which had high catalytic activity and reusability, was used in the green synthesis of pyrano[4,3-b]pyrans via condensation of various aromatic aldehydes, malononitrile, and 4-hydroxy-6-methyl-2H-pyran-2-one at 120℃ under solvent-free conditions. The reaction proceeded to completion within 5-45 min in 93%-98% yield. The nano-CaO was fully characterized by scanning electron microscopy, X-ray powder diffraction, infrared spectroscopy, X-ray fluorescence spectroscopy, and thermal gravimetric, surface area, and elemental analyses.

关键词: Nano-calcium oxide, Eggshell waste, Biocatalyst, Pyrano[4,3-b]pyrans, Ball-mill

Abstract:

Nano-CaO was prepared by calcination of ball-milled chicken eggshell waste. This novel, bioactive, heterogeneous catalyst, which had high catalytic activity and reusability, was used in the green synthesis of pyrano[4,3-b]pyrans via condensation of various aromatic aldehydes, malononitrile, and 4-hydroxy-6-methyl-2H-pyran-2-one at 120℃ under solvent-free conditions. The reaction proceeded to completion within 5-45 min in 93%-98% yield. The nano-CaO was fully characterized by scanning electron microscopy, X-ray powder diffraction, infrared spectroscopy, X-ray fluorescence spectroscopy, and thermal gravimetric, surface area, and elemental analyses.

Key words: Nano-calcium oxide, Eggshell waste, Biocatalyst, Pyrano[4,3-b]pyrans, Ball-mill