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Preparation of Calcium Carbonate in Mixture Solvent System Using L-Arginine as Template(PDF)

《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

Issue:
2010年02期
Page:
54-57
Research Field:
化学
Publishing date:

Info

Title:
Preparation of Calcium Carbonate in Mixture Solvent System Using L-Arginine as Template
Author(s):
Wang Xiaofeng1; Chen Changyun1; Wu Gang2; Rui Pinjing2; Chen Yu1; Zhang Zhenglu1
1.Department of Chemistry,Nanjing Xiaozhuang University,Nanjing 211171,China 2. Department of Chem istry and L ife S cien ce, C hu zhouUn ivers ity, Chuzh ou 239012, China
Keywords:
L-Arg;  calc ium carbona te;  ca lc ite;  aragonite;  vater ite;  mo rpho logy
PACS:
TQ132.32
DOI:
-
Abstract:
W e used CaC l2 and NaCO3 as raw m ate rials for the preparation of ca lcium carbonate. Firstly the reaction cond itions were at 65℃ , in m ixed so lvents of ultra-purew ate r and DMF( V /VB1 /1), in the presence of different concentrations of L-A rg. W e found that when CL-A rg is 0.04 m o l/L, the produc t o f ca lcium carbona te is a m ain ca lc ite-type, but when CL-A rg is 0.02 mo l/L, the product is a ca lcite, va terite and aragonite hybr id system, when CL-Arg is 0.08m o l/L, the produc t is am ix ture o f calc ite and aragonite system. Secondly, we altered the reaction tem perature to 65 ℃ and 85 ℃ w ith CL-Arg 0.04m o l/L. The resu lts show ed that at 65 e , the produc t o f ca lcium ca rbonate is ca lcite- type, but at 85 ℃ , the produc t is am a in ca lc ite and vater ite hybrid system. It w as show n that tem pe ra ture and concentration of L-Arg have significant effects in the crysta l grow th of ca lcium carbonate.

References:

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Last Update: 2013-04-08