title: Molecular NO(2) induced K(2)Ti(2)O(5)-K(2)Ti(6)O(13) structure switching in the dry gas phase: lattice potassium reactivity.
abstract: A very interesting structure switching phenomenon between K(2)Ti(2)O(5) and K(2)Ti(6)O(13) caused by gas phase molecular NO(2) adsorption and desorption at 500-600 degrees C is revealed, during which NO(2) is adsorbed on the lattice K(+) ion sites to form KNO(3) and the loss of K causes the remainder to regroup into nano-sized K(2)Ti(6)O(13), with a lower K/Ti value.
authors.affiliation: Department of Catalysis Science and Engineering, School of Chemical Engineering and Technology, Harbin Institute of Technology, Harbin, Heilongjiang 150001, PR China. wulihe@postech.ac.kr
authors.forename: Qiang
authors.initials: Q
authors.lastname: Wang
authors.forename: Zhanhu
authors.initials: Z
authors.lastname: Guo
authors.forename: Jong
authors.initials: J
authors.lastname: Shik Chung