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Citation: CHEN Yongmei, ZHU Junli, YU Zhanglong, WAN Pingyu. Orthogonal Optimized Synthesis of Dawsonite from Aluminum Citrate[J]. Chinese Journal of Applied Chemistry, ;2012, 29(1): 84-89. doi: 10.3724/SP.J.1095.2012.00057 shu

Orthogonal Optimized Synthesis of Dawsonite from Aluminum Citrate

1.
a Faculty of Science, Beijing University of Chemical and Technology, Beijing 100029, China;
2.
b Northwest Research Institute of Chemical Industry, Xi'an 710600, China

Corresponding author: CHEN Yongmei,
Received Date: 21 February 2011
Available Online: 1 June 2011
Fund Project: 中央高校自主创新资助项目(JD0907) (JD0907)

The conversion of aluminum citrate(AlCit) to dawsonite is the key step to the alumina process named "AlCit-dawsonite-alumina".The reaction conditions including the dosage of sodium bicarbonate,pH,reaction temperature and reaction time,were found to be related to the conversion of AlCit.Orthogonal experimental design was employed to optimize the reaction conditions.About 76% of AlCit was conversed to dawsonite under the optimized conditions:NaHCO₃/Al molar ratio of 5,pH of 11,temperature of 80℃ and reaction time of 3 h,comparing to 65% obtained under preliminary experimental conditions.
- orthogonal experimental design,
- aluminium citrate,
- dawsonite,
- alumina
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