Jump to main content
Jump to site search

Issue 19, 2017
Previous Article Next Article

Enhanced base-catalyzed activity and structural stability of nitrogen-doped carbon modified MgO–MgFe2O4 magnetic composites as catalysts for transesterification of tributyrin

Author affiliations

Abstract

In this work, nitrogen-doped carbon modified MgO–MgFe2O4 (CN-MgFeO) magnetic composites were synthesized by a facile thermal decomposition of Mg–Fe layered double hydroxide (MgFe-LDH) and cyanamide mixture precursors. A series of comprehensive characterization studies including powder X-ray diffraction, transmission electron microscopy, Fourier transform infrared of CO2 adsorption, CO2-temperature programmed desorption, and X-ray photoelectron spectroscopy indicated that the introduction of cyanamide could finely tune the surface basicity of the resulting CN-MgFeO composites, especially surface strong Lewis basicity. Compared with CN-free MgFeO, the as-fabricated CN-MgFeO catalysts showed higher activity in the liquid-phase transesterification of tributyrin with methanol. Particularly, the CN-MgFeO composite prepared at a cyanamide/Mg molar ratio of 1.5 in the synthesis mixture gave a highest methylbutyrate yield of 80% after a reaction for 20 min. The high catalytic performance was attributable to the presence of a large amount of strong Lewis basic sites originating from highly dispersed basic MgO–MgFe2O4 mixed metal oxides and CN component in the composite. What is more, such a cost-effective CN-MgFeO catalyst had the advantages of intrinsic magnetic properties and an excellent structural stability. We expect that they may have potential practical applications in the field of industrial production of biodiesels.

Graphical abstract: Enhanced base-catalyzed activity and structural stability of nitrogen-doped carbon modified MgO–MgFe2O4 magnetic composites as catalysts for transesterification of tributyrin

Back to tab navigation
Please wait while Download options loads

Publication details

The article was received on 24 Feb 2017, accepted on 12 Apr 2017 and first published on 12 Apr 2017


Article type: Paper
DOI: 10.1039/C7DT00689F
Citation: Dalton Trans., 2017,46, 6324-6332
  •   Request permissions

    Enhanced base-catalyzed activity and structural stability of nitrogen-doped carbon modified MgO–MgFe2O4 magnetic composites as catalysts for transesterification of tributyrin

    Y. Zhang, M. Zhang, L. Yang, G. Fan and F. Li, Dalton Trans., 2017, 46, 6324
    DOI: 10.1039/C7DT00689F

Search articles by author