RT Journal Article
ID 3a940ce34374388f
A1 Wu, Chuntian
A1 Wang, Xiaodong
A1 Zhou, Xiunan 
A1 Yang, Tianzhuo 
A1 Zhang, Tao
T1 SUPPORTED MnO<sub>x</sub> /SrO&minus;Al<sub>2</sub>O<sub>3</sub> HIGH-CELL DENSITY HONEYCOMB CERAMIC MONOLITH CATALYST FOR HIGH-CONCENTRATION HYDROGEN PEROXIDE DECOMPOSITION
JF International Journal of Energetic Materials and Chemical Propulsion
JO IJEMCP
YR 2015
FD 2015-10-08
VO 14
IS 5
SP 421
OP 436
K1 cordierite honeycomb monolith
K1 nontoxic monopropellant
K1 catalytic decomposition
K1 high bed-loading
AB High-concentration hydrogen peroxide is a potential substitute for a toxic hydrazine monopropellant. There is a pressing need for improved H<sub>2</sub>O<sub>2</sub> decomposition catalysts to both increase bed loading and improve the resistance to a high temperature. In this paper, we describe the effects of Sr addition on the catalytic properties of MnO<sub>x</sub>/SrO&minus;Al<sub>2</sub>O<sub>3</sub> catalysts for high-concentration hydrogen peroxide decomposition. A structure analysis by temperature-programmed reduction and X-ray diffraction revealed that highly dispersed SrO formed on Al<sub>2</sub>O<sub>3</sub> enhanced the dispersion and reduction capability of Mn species and facilitated the formation of more active Mn<sup>4&#43;</sup> species due to restraining the interaction between Mn and Al<sub>2</sub>O<sub>3</sub> and activation of oxygen. Mn<sup>4&#43;</sup> species provided the main active site. The addition of Sr increased the catalytic activity and work stability of the MnO<sub>x</sub>/SrO&minus;Al<sub>2</sub>O<sub>3</sub> monolith catalyst.
PB Begell House
LK https://www.dl.begellhouse.com/journals/17bbb47e377ce023,488f8cbb66341308,3a940ce34374388f.html