Paper Title:
Shape Forming of Alumina-Silica of High Thermal Stability for Space Propulsion Applications
  Abstract

The replacement of toxic hydrazine used for catalytic propulsion by less toxic propellants such as ionic liquids is of hot interest. The challenge for this replacement is the formulation, development and shape forming of new catalysts. Efficient catalysts for the decomposition of aqueous 79 wt.-% HAN solutions (hydroxylammonium nitrate NH3OH+NO3 -) contain 10 wt.-% Pt active phase deposited on a support. Laboratory-made powder catalysts contain platinum supported on Si-doped alumina and display a good activity at low temperature. But, for industrial applications in propulsion thrusters, the pressure drop due to a powder is too high and consequently shape formed supports and catalysts must be prepared and investigated. Two catalyst types have been prepared (i) from shaped supports obtained at the laboratory level using the “oil-drop” method and (ii) from supports formed through an industrial procedure. Both shape formed samples display comparable properties as the powder support, such as high thermal stability linked to the presence q and d aluminas and similar BET surface area. Catalysts based on these supports show efficient catalytic activities.

  Info
Periodical
Edited by
P. VINCENZINI
Pages
427-435
DOI
10.4028/www.scientific.net/AST.45.427
Citation
D. Amariei, S. Rossignol, C. Kappenstein, "Shape Forming of Alumina-Silica of High Thermal Stability for Space Propulsion Applications", Advances in Science and Technology, Vol. 45, pp. 427-435, 2006
Online since
October 2006
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Li Bao Wu, Dong Mei Jiao, Li Fang Chen, Jin An Wang, Fa Hai Cao
Abstract:Three CoMo supported catalysts with different supports, Al2O3, MgO and MgO-MgAl2O4, were prepared by a urea matrix combustion method. The...
45
Authors: Hai Zhao, You Ning Xu, Jun Qing Liu
Abstract:Nanosized cerium-manganese ferrite particles were prepared by co-precipitation approach. The structural evolutions and morphological...
31
Authors: Takeshi Miki, Yutaka Tai
Abstract:Fe2O3/Al2O3 catalyst was prepared and the catalytic oxidation of toluene over the catalyst was...
101
Authors: Jian Feng, Wei Xiong, Yun Jia, Jin Bo Wang, De Rong Liu, Rui Xiang Qin
Chapter 2: Applied Chemical Engineering
Abstract:The hydrogenation of biomass-derived ethyl lactate was studied over several ruthenium catalysts. The effect of support (TiO2,...
796