The role of solvent in chemical reactions

Author(s):  
V. S. Padmanabhan ◽  
S. V. Anantakrishnan
ChemPhysChem ◽  
2008 ◽  
Vol 9 (18) ◽  
pp. 2836-2847 ◽  
Author(s):  
Lorna Dougan ◽  
Ainavarapu Sri Rama Koti ◽  
Georgi Genchev ◽  
Hui Lu ◽  
Julio M. Fernandez

Author(s):  
David R. Veblen

Extended defects and interfaces control many processes in rock-forming minerals, from chemical reactions to rock deformation. In many cases, it is not the average structure of a defect or interface that is most important, but rather the structure of defect terminations or offsets in an interface. One of the major thrusts of high-resolution electron microscopy in the earth sciences has been to identify the role of defect fine structures in reactions and to determine the structures of such features. This paper will review studies using HREM and image simulations to determine the structures of defects in silicate and oxide minerals and present several examples of the role of defects in mineral chemical reactions. In some cases, the geological occurrence can be used to constrain the diffusional properties of defects.The simplest reactions in minerals involve exsolution (precipitation) of one mineral from another with a similar crystal structure, and pyroxenes (single-chain silicates) provide a good example. Although conventional TEM studies have led to a basic understanding of this sort of phase separation in pyroxenes via spinodal decomposition or nucleation and growth, HREM has provided a much more detailed appreciation of the processes involved.


2013 ◽  
Vol 25 (18) ◽  
pp. 10499-10503 ◽  
Author(s):  
Ziya Ahmad Khan ◽  
Abdullah S. Al-Bogami
Keyword(s):  

1994 ◽  
Vol 98 (34) ◽  
pp. 8352-8358 ◽  
Author(s):  
F. Gai ◽  
M. J. Fehr ◽  
J. W. Petrich

2015 ◽  
Vol 33 (sup1) ◽  
pp. 100-101
Author(s):  
Qiong Yang ◽  
Peng Sang ◽  
Shu-Qun Liu

Sign in / Sign up

Export Citation Format

Share Document