Issue 35, 2009
From the journal:

Chemical Communications

Molecular NO2 induced K2Ti2O5–K2Ti6O13 structure switching in the dry gas phase: lattice potassium reactivity†

Qiang Wang,*ab   Zhanhu Guoc  and  Jong Shik Chungbd  

* Corresponding authors

a Department of Catalysis Science and Engineering, School of Chemical Engineering and Technology, Harbin Institute of Technology, Harbin, Heilongjiang, PR China

b School of Environmental Science and Technology, POSTECH, San 31, Hyoja-Dong, Nam-gu, Pohang 790-784, Republic of Korea
E-mail: wulihe@postech.ac.kr

c Integrated Composites Laboratory (ICL), Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, USA

d Department of Chemical Engineering, POSTECH, San 31, Hyoja-Dong, Nam-gu, Pohang 790-784, Republic of Korea

Abstract

A very interesting structure switching phenomenon between K2Ti2O5 and K2Ti6O13 caused by gas phase molecular NO2 adsorption and desorption at 500–600 °C is revealed, during which NO2 is adsorbed on the lattice K+ ion sites to form KNO3 and the loss of K causes the remainder to regroup into nano-sized K2Ti6O13, with a lower K/Ti value.

Graphical abstract: Molecular NO2 induced K2Ti2O5–K2Ti6O13 structure switching in the dry gas phase: lattice potassium reactivity

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Article information

DOI
https://doi.org/10.1039/B909455E
Article type
Communication
Submitted
12 May 2009
Accepted
25 Jun 2009
First published
23 Jul 2009

Chem. Commun., 2009, 5284-5286

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Molecular NO2 induced K2Ti2O5–K2Ti6O13 structure switching in the dry gas phase: lattice potassium reactivity

Q. Wang, Z. Guo and J. Shik Chung, Chem. Commun., 2009, 5284 DOI: 10.1039/B909455E

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