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Single-phase insulating 12CaO?7Al_2O_3(C12A7) powder was synthesized using an optimized hydrothermal method. Pure phase of C12A7 was got at a comparatively lower temperature(c.a. 300 ℃) than that has been previously reported. The crystallite size of the synthesized C12A7 powder was 7±2 nm. The surface area values calculated for all the samples at a synthesis temperature range of 250-800 ℃ for 5 h were in the range of about 19-24 m~2/g, with pore sizes of 12-20 nm. This low-temperature-based synthetic strategy along with nano porous structures and a high surface area value can facilitate catalyst application.
Pure phase of C12A7 was got at a comparatively lower temperature (ca 300 ° C) than that has been previously reported. The crystallite size of the synthesized C12A7 powder was 7 ± 2 nm. The surface area values calculated for all the samples at a synthesis temperature range of 250-800 ° C for 5 h were in the range of about 19-24 m ~ 2 / g with pore sizes of 12-20 nm. This low-temperature-based synthetic strategy along with nano porous structures and a high surface area value can facilitate catalyst application.