鹽化알루미늄 水溶液으로부터 Aluminum Citrate의 合成 硏究
A Study on the Synthesis of Aluminum Citrate from Aluminum Chloride Solutions
0
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
염화알루미늄 수용액으로부터 알루미늄 유기화합물인 구연산알루미늄 합성실험을 수행하였다. 수용액중 알루미늄 농도와 구연산 농도비율은 몰비 2.5가 되도록 첨가해 주었으며, 합성된 구연산알루미늄은 화학분석, X-선 회절분석, 입도분석 및 SEM 분석을 통하여 시료특성을 평가하였다. 알루미늄 수용액으로부터 구연산알루미늄을 합성하기 위해서는 에탄올/알루미늄 수용액 혼합비율을 4.0이상으로 유지하여야 하는 것으로 나타났다. 또한, 97% 이상의 회수율을 얻기 위해서는 혼합액의 pH를 7.0이상으로 조절하여야 하는 것으로 나타났다. 합성반응을 통해 얻은 구연산알루미늄의 화학분석결과 NH4 17.0%, Al 4.01% 및 C 25.7%이었으며, 이의 화학식은 (NH4)5Al(C6H4O7)2 · 2H2O임을 확인할 수 있었다.
Abstract
An investigation on the synthesis of aluminum citrate, one of the aluminum organic compounds, has been performed using aluminum chloride solutions as a starting material. For the synthesis of aluminum citrate, citric acid was added to aluminum solutions with the mole ratio of citric acid to aluminum to be 2.5 and aluminum citrate synthesized was also characterized in terms of chemical analysis, X-ray diffraction, particle size measurement and SEM analysis. As a result, it was found that the ratio of ethanol/Al solution more than 4.0 was required for the synthesis of aluminum citrate from aluminum solutions. Furthermore, the pH should be controlled to be more than 7.0 in order to obtain the recovery of aluminum citrate higher than 97%. From the chemical analysis of aluminum citrate synthesized in this work, the content of NH4, Al and C was found to be 17.0, 4.01 and 25.7%, respectively. Accordingly, the aluminum citrate synthesized from aluminum solutions was confirmed to be (NH4)5Al(C6H4O7)2 · 2H2O.
참고문헌 (12)
- 이화영, "水酸化알루미늄으로부터 Aluminum Oxalate의 合成 硏究", 자원리싸이클링, 18(4), pp.38~43 (2009), 한국자원리싸이클링학회
- 이화영, "수산화알루미늄으로부터 Aluminum Oxalate 의 제조기술", 세라미스트, 12(2), pp.20~26 (2009)
- Park, J. Y, "Preparation of aluminum oxide particles using ammonium acetate as precipitating agent", Materials Letters, 56, pp.429~434 (2002)
- Teir, S, "Dissolution of natural serpentinite in mineral and organic acids", Int. J. Miner. Process, 83, pp.36~46 (2007)
- Dash, B, "Precipitation of boehmite in sodium aluminate liquor", Hydrometallurgy, 95, pp.297~301 (2009)
- Martin, E. S, "Synthesis and properties of high-purity alumina", American Ceramic Society Bulletin, 72, pp.71~77 (1993)
- Hernandez, C, "Recovery of metals from Cuban nickel tailings by leaching with organic acids followed by precipitation and magnetic separation", Journal of Hazardous Materials, B139, pp.25~30 (2007)
- C. Clar, "Synthesis and characterization of aluminum carboxylate gels", Thermochimica Acta, 407, pp.33~40 (2003)
- L. Weng, "Synthesis of aluminum nitride from aluminum citrate precursor", Materials Letters, 18, pp.159~162 (1993)
- Matzapetakis, M, "Synthesis, structural characterization,and solution behavior of the first monolayer,aqueous aluminum citrate complex", Inorganic Chemistry, 38, pp.618~619 (1999)
- Matzapetakis, M, "Synthesis, pH-dependent structural characterization, and solution behavior of aqueous aluminum and gallium citrate complexes", Inorganic Chemistry, 40, pp.1734~1744 (2001)
- Ibrahim, D. M, "Preparation of nano alumina via resin synthesis", Materials Chemistry and Physics, 113, pp.579~586 (2009)