A STUDY ON THE SYNTHESIS OF MgAl2O4 SPINEL BY STARCH ASSISTED SOL-GEL PROCESS

Tran Ngoc Tuyen, Nguyen Duc Vu Quyen, Tran Minh Ngoc, Dang Xuan Tin, Ho Van Minh Hai

Abstract


In this paper, the synthesis of ceramic spinel MgAl2O4 by starch assisted sol - gel process is presented. The gel mixture was prepared by using Mg(NO3)2.6H2O, Al(NO3)3.9H2O as precursors and starch as a gel agent. The study focused on relevant components of gel mixture and the calcinating temperature. The results showed that suitable molar proportion of Mg2+/Al3+; starch/(Mg2+ + Al3+) and H2O/starch were 0.5, 0.4 and 60, respectively. The calcination at               1100 oC for 60 minutes was suitable for forming phase of spinel. The product was a single phase of spinel MgAl2O4 with excellent crystallinity and uniform size in the range of 300 to 400 nm.


Keywords


spinel MgAl2O4, ceramic material, metal-starch precursor

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DOI: https://doi.org/10.15625/0866-708X/53/4/5777 Display counter: Abstract : 57 views. PDF : 47 views.

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Published by Vietnam Academy of Science and Technology