The thermal decomposition of the precursor

The subsequent weight loss of 34.08% after 200 °C is caused by decomposition of the carbonate and the dehydration of remnant water of crystallization. It is clearly seen lactose intolerance the oxide formation from precursor is almost completed below 680 °C and the weight loss of 1.19% from 680 °C to 1000 °C is mainly due to decomposition of the remnant carbonates. The mass loss of 0.90% at the temperature range of 1000–1200 °C is 'TNKS mainly due to desulfurization [16].