scholarly journals Shape and Properties of Calcium Carbonate Obtained by Thermal Decomposition of Calcium Acetate

1989 ◽  
Vol 97 (1126) ◽  
pp. 669-672 ◽  
Author(s):  
Osamu MACHINAGA ◽  
Junichi KASAI
2011 ◽  
Vol 695 ◽  
pp. 521-524 ◽  
Author(s):  
Wen Kun Zhu ◽  
Xue Gang Luo ◽  
Xiao Yan Lin ◽  
Pan He

The calcium carbonate crystallization was controlled by Ca2+concentrations, under the system of lignin solution with concentration of 10 g / L. Its morphology, structure and thermal decomposition were characterized by FT-IR, SEM, XRD and TG. Results showed that in lignin solution system, concentration of Ca2+had significant effects on the crystallized morphology, orientation and crystallinity of calcium carbonate. Calcium carbonate crystal under low Ca2+concentration had more uniform size while under high Ca2+concentration which tended to form various sizes with more complete crystallization. The calcium carbonate crystals were all calcite calcium carbonate, which formed under different Ca2+concentrations.


2011 ◽  
Vol 197-198 ◽  
pp. 199-202 ◽  
Author(s):  
Wen Kun Zhu ◽  
Xue Gang Luo ◽  
Xiao Yan Lin ◽  
Jing He

The calcium carbonate crystallization were controlled by Ca2+ concentration in the 10% (V/V) egg white protein solution and the morphology, structure and thermal decomposition of which were characterized by FT-IR, SEM, XRD and TG. The results showed in egg white protein solution system, concentration of Ca2+ had significant effects on the crystallized morphology, orientation and crystallinity of calcium carbonate. Calcium carbonate particles have more uniformed calcite and vaterite mixed crystallization in low Ca2+ concentration while calcium carbonate tends to form mixed particle sizes and more complete calcite crystallization in high Ca2+ concentration.


1994 ◽  
Vol 49 (13) ◽  
pp. 2198-2204 ◽  
Author(s):  
M.S. Murthy ◽  
B.R. Harish ◽  
K.S. Rajanandam ◽  
K.Y. Ajoy Pavan Kumar

1995 ◽  
Vol 10 (12) ◽  
pp. 2321-2324 ◽  
Author(s):  
M. J. A. Janssen ◽  
A. van der Kuy ◽  
P. M. ter Wee ◽  
W. -P. L. van Boven

1991 ◽  
Vol 6 (3) ◽  
pp. 170-175 ◽  
Author(s):  
K. Schaefer ◽  
J. Scheer ◽  
G. Asmus ◽  
E. Umlauf ◽  
J. Hagemann ◽  
...  

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