Influence of Additives on Glycine Crystal Characteristics

被引：15

作者：

Hrkovac, Martina ^{[1
]}

Kardum, Jasna Prlic ^{[1
]}

Schuster, Anke ^{[2
]}

Ulrich, Joachim ^{[2
]}

机构：

[1] Univ Zagreb, Fac Chem Engn & Technol, Zagreb 10000, Croatia

[2] Univ Halle Wittenberg, Zentrum Ingn Wissensch, Verfahrenstech TVT, Halle, Germany

来源：

CHEMICAL ENGINEERING & TECHNOLOGY | 2011年 / 34卷 / 04期

关键词：

Crystallization; Crystal size distribution; Glycine; Polymorphs; X-ray analysis; BETA-GLYCINE; CRYSTALLIZATION; TRANSFORMATION;

D O I：

10.1002/ceat.201000532

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Different quantities of additives (sodium chloride and oxalic acid) and antisolvent (ethanol) were used in order to define their influence on crystallization of glycine from aqueous solutions. The solubility curves were determined for all process conditions but the nucleation points only for the initial concentration of glycine. The obtained results showed that both the quantity and type of the additive affect the solubility curves, the metastable zone width as well as the granulometric characteristics of crystals (aspect ratio, external shape, and the crystal size distribution). X-ray analysis confirmed occurrences of gamma-glycine by adding sodium chloride and oxalic acid, regardless of the added mass while the alpha-polymorphs were achieved by adding ethanol.

引用

页码：611 / 618

页数：8

共 12 条

[1] Effect of solvents on the growth morphology and physical characteristics of nonlinear optical γ-glycine crystals [J].

Bhat, MN ;

Dharmaprakash, SM .

JOURNAL OF CRYSTAL GROWTH, 2002, 242 (1-2) :245-252

[2] Solubility of glycine polymorphs and recrystallization of β-glycine [J].

Bouchard, Andreanne ;

Hofland, Gerard W. ;

Witkamp, Geert-Jan .

JOURNAL OF CHEMICAL AND ENGINEERING DATA, 2007, 52 (05) :1626-1629

[3] Growth and characterization of nonlinear optical γ-glycine single crystal from lithium acetate as solvent [J].

Dhanaraj, P. V. ;

Rajesh, N. P. .

MATERIALS CHEMISTRY AND PHYSICS, 2009, 115 (01) :413-417

[4] Synthesis and calorimetric investigation of unstable β-glycine [J].

Drebushchak, VA ;

Boldyreva, EV ;

Drebushchak, TN ;

Shutova, ES .

JOURNAL OF CRYSTAL GROWTH, 2002, 241 (1-2) :266-268

[5] Crystallization in polymorphic systems:: The solution-mediated transformation β to α glycine [J].

Ferrari, ES ;

Davey, RJ ;

Cross, WI ;

Gillon, AL ;

Towler, CS .

CRYSTAL GROWTH & DESIGN, 2003, 3 (01) :53-60

[6]

Garside J., 2002, Measurement of Crystal Growth and Nucleation Rates, VSecond

[7] THE CRYSTAL STRUCTURE OF BETA-GLYCINE [J].

IITAKA, Y .

ACTA CRYSTALLOGRAPHICA, 1960, 13 (01) :35-45

[8] Study of batch crystallization and determination of an alternative temperature-time profile by on-line turbidity analysis -: application to glycine crystallization [J].

Moscosa-Santillán, M ;

Bals, O ;

Fauduet, H ;

Porte, C ;

Delacroix, A .

CHEMICAL ENGINEERING SCIENCE, 2000, 55 (18) :3759-3770

[9]

Sangwal K., 2007, Additives and crystallization processes: from fundamentals to applications

[10]

Srinivasan K., 2008, P 17 INT S IND CRYST

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