Synthesis of C12A7

TY Tian-Nan Ye
ZX Zewen Xiao
JL Jiang Li
YG Yutong Gong
HA Hitoshi Abe
YN Yasuhiro Niwa
MS Masato Sasase
MK Masaaki Kitano
HH Hideo Hosono
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C12A7 was synthesized by a hydrothermal method followed by calcination. Briefly, a stoichiometric mixture (Ca:Al = 12:14) of Ca(OH)2 and Al(OH)3 was dispersed in distilled water and ball-milled at a speed of 12.1 × g for 4 h. The mixture was then hydrothermally treated in a Teflon-lined stainless autoclave at 150 °C for 6 h with stirring. The product was separated by centrifugation and calcined at 600 °C for 5 h in air. The C12A7 sample was then collected as a white powder. C12A7-800 and C12A7-1000 powders were obtained by calcination at 800 and 1000 °C, respectively.

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