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首页> 外文期刊>Journal of Crystal Growth >Crystal growth kinetics of iron fluoride trihydrate
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Crystal growth kinetics of iron fluoride trihydrate

机译：三水合氟化铁的晶体生长动力学

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Crystal growth of beta-FeF3 center dot 3H(2)O has been investigated in mixtures of 3 mol kg(-1) hydrofluoric acid and 3 mol kg(-1) nitric acid at 30, 40 and 50 degrees C. Seeded isothermal desupersaturation experiments have been performed in the range: 1.3 < S < 3.6. Solution samples were analysed for total iron concentration with inductively coupled plasma atomic emission spectroscopy. The true supersaturation driving force was estimated by a proper speciation using the software SSPEC using appropriate stability constants. Growth rate parameters of the BCF surface diffusion growth rate equation and the empirical power-law equation have been estimated by fitting the supersaturation balance equation using a nonlinear optimization procedure. The results show that the growth rate is surface integration controlled. The growth rate at a supersaturation ratio of 2 was found to be 3.5 x 10(-12) m s(-1) at 30 degrees C, 7.4 x 10(-12) m s(-1) at 40 degrees C and 16 x 10(-12) m s(-1) at 50 degrees C. The activation energy of the rate constant of crystal growth was found to be 61 kJ mol(-1). (c) 2006 Elsevier B.V. All rights reserved.
机译：已经在30、40和50摄氏度下研究了3 mol kg（-1）氢氟酸和3 mol kg（-1）硝酸的混合物中β-FeF3中心点3H（2）O的晶体生长。种子等温去饱和实验已在以下范围内进行：1.3

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