Effect of Impurity on the Lateral Crystal Growth of l-Alanine: A Combined Simulation and Experimental Study

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• 作者：Xiangyu Yang ; Gang Qian ; Xuezhi Duan ; Xinggui Zhou
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2012
• 出版时间：November 14, 2012
• 年：2012
• 卷：51
• 期：45
• 页码：14845-14849
• 全文大小：272K
• 年卷期：v.51,no.45(November 14, 2012)
• ISSN：1520-5045

文摘

The effects of l-valine on the lateral growth of (011) and (120) surfaces of l-alanine are studied by combining molecular simulation and experimental studies. The growth of the (120) surface is significantly inhibited by l-valine, while the growth of the (011) surface is less affected. An intrinsic impurity effectiveness parameter is proposed by taking into consideration the selectivity of impurities to adsorb on both step and terrace, which explains the different inhibition effects of an impurity on different surfaces.