Articles
  • Effect of ethylene glycol on the synthesis of crystalline boron carbide powder from condensed boric-acid-glycerin precursor

  • Li Yanga,b, Li Sanxib,*, Wang Songb, Tian Chengchenga,b and Otitoju Tunmise Ayodea,b

  • aSchool of Materials Science and Engineering, Shenyang University of Technology, Liaoning 110870, China
    bSchool of Environmental and Chemical Engineering, Shenyang University of Technology, Liaoning 110870, China

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The effect of addition of ethylene glycol (C2H6O2) on the synthesis of crystalline boron carbide (B4C) powder from a condensed boric acid (H3BO3)-glycerin (C3H8O3) product was investigated. Equal molar amount of H3BO3 and glycerin was mixed and subjected to dehydration-condensation reaction using various amount of ethylene glycol (0 to 40 mol% based on glycerol amount). Then the condensed product was thermally decomposed in air twice to obtain surface carbon-free precursor powder. The crystalline phases and surface functional groups of the material was characterized using XRD, SEM, FTIR and TGA. Addition of ethylene glycol offered a new organic sites and comparatively, reduced pyrolysis temperature from 700 to 650 oC. The complete formation of crystalline B4C powder was achieved at 1475 oC within 2.5 h, which is among the shortest time reported for B4C synthesis


Keywords: Boron carbide, Glycerin, Dehydration-condensation reaction, Shortest time

This Article

  • 2023; 24(2): 367-373

    Published on Apr 30, 2023

  • 10.36410/jcpr.2023.24.2.367
  • Received on Aug 3, 2022
  • Revised on Aug 27, 2022
  • Accepted on Sep 26, 2022

Correspondence to

  • Li Sanxi

  • School of Environmental and Chemical Engineering, Shenyang University of Technology, Liaoning 110870, China
    Tel : +86 18704009103

  • E-mail: lisx@sut.edu.cn