Calcium carbonate crystallization in the presence of glutamic acid

Autor:	F Manoli, Evangelos Dalas
Rok vydání:	2001
Předmět:	Calcite Supersaturation Chemistry Inorganic chemistry chemistry.chemical_element Calcium Condensed Matter Physics law.invention Inorganic Chemistry chemistry.chemical_compound Calcium carbonate law Phase (matter) Vaterite Aspartic acid Materials Chemistry Crystallization
Zdroj:	Journal of Crystal Growth. 222:293-297
ISSN:	0022-0248
Popis:	The kinetics of vaterite (CaCO3) crystallization on calcite in the presence of aspartic acid was investigated by the constant composition technique. The presence of aspartic acid in the supersaturated solution stabilizes this calcium carbonated polymorph possibly through the development of active growth sites, which should show chemical and structural affinity to this mineral phase. The number of ions forming the critical nucleus was n* = 4, and a surface energy of 31 mJ m-2 for the growing phase was estimated. The apparent order was found to be 1.75 ± 0.25, indicative for a surface diffusion controlled mechanism.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::545779191c087d83318f7cf276f4e04e https://doi.org/10.1016/s0022-0248(00)00893-9 Zobrazit plný text záznamu Full Text from ScienceDirect