caa a22 4500 463189973 CHVBK 20180406164906.0 cr unu---uuuuu 170326e20071201xx s 000 0 eng 10.1007/s10973-007-8525-6 doi (NATIONALLICENCE)springer-10.1007/s10973-007-8525-6 Effect of citrate to nitrate ratio on the decomposition characteristics and phase formation of alumina [Elektronische Daten] [S. Banerjee, P. Sujatha Devi] This paper reports the effect of the variation of citrate to nitrate ratio on the thermal decomposition characteristics of alumina precursor and the properties of nanocrystalline alumina synthesized using this auto-ignition process. The technique involves the auto-ignition of a citrate-nitrate gel occurring between Al(NO3)3 and citric acid to yield an ash powder that upon calcination at 1373 K produced α-alumina. The auto-ignition was restricted to a particular range of citrate to nitrate ratio in the gel. The resulting powder exhibited large surface area (40-50 m2 gm−1) and fine crystallite size. It was established from various characterization techniques that the alumina powder prepared with a C/N ratio of 0.3 has got the optimum powder characteristics compared to the rest of the batches, thus establishing the importance of maintaining a stoichiometric or near stoichiometric C/N ratio. The process has a higher degree of reproducibility and a good potential for large-scale production of alumina. Springer Science+Business Media, LLC., 2007 alumina nationallicence citrate-nitrate process nationallicence thermal analysis nationallicence Banerjee S. Electroceramics Division, Central Glass and Ceramic Research Institute, 700 032, Kolkata, India aut Sujatha Devi P. Electroceramics Division, Central Glass and Ceramic Research Institute, 700 032, Kolkata, India aut Journal of Thermal Analysis and Calorimetry Springer US; http://www.springer-ny.com 90/3(2007-12-01), 699-706 1388-6150 90:3<699 2007 90 10973 https://doi.org/10.1007/s10973-007-8525-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10973-007-8525-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Banerjee S. Electroceramics Division, Central Glass and Ceramic Research Institute, 700 032, Kolkata, India aut NATIONALLICENCE 700 1- Sujatha Devi P. Electroceramics Division, Central Glass and Ceramic Research Institute, 700 032, Kolkata, India aut NATIONALLICENCE 773 0- Journal of Thermal Analysis and Calorimetry Springer US; http://www.springer-ny.com 90/3(2007-12-01), 699-706 1388-6150 90:3<699 2007 90 10973 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer