Results 31 to 40 of about 160,248 (216)

Impact of Hydrogen Peroxide Concentration on Manganese Oxide and Platinum Catalyst Bed Performance

Aerospace, 2023
This study investigates the use of MnxOy/Al2O3 and Pt/Al2O3 catalysts for the decomposition of hydrogen peroxide in thrusters. It describes the purpose, procedures, performance, and conclusions coming from the test campaign of the catalyst lifetimes.
Adrian Parzybut, Pawel Surmacz, Zbigniew Gut   +2 more
doaj   +1 more source

Three-phase packed bed reactor with an evaporating solvent—II. Modelling of the reactor [PDF]

, 1990
In this paper two models are presented for a three-phase catalytic packed bed reactor in which in evaporating solvent is used to absorb and remove most of the reaction heat. A plug flow model and a model comprising mass and heat dispersion in the reactor
Borman, P.C., Gelder, K.B. van, Weenink, R.E., Westerterp, K.R.   +3 more
core   +2 more sources

Maximizing H₂ Production from a Combination of Catalytic Partial Oxidation of CH₄ and Water Gas Shift Reaction

Molecules
A single-bed and dual-bed catalyst system was studied to maximize H2 production from the combination of partial oxidation of CH4 and water gas shift reaction.
Pannipa Tepamatr, Pattarapon Rungsri, Pornlada Daorattanachai, Navadol Laosiripojana   +3 more
doaj   +1 more source

Hydrocracking Lumped Kinetic Model with Catalyst Deactivation in Arak Refinery Hydrocracker Unit [PDF]

Journal of Petroleum Science and Technology, 2011
A kinetic model of a fixed bed tubular reactor incorporating catalyst deactivation was developed for the ISOMAX unit of Arak refinery. The kinetic parameters for the hydrocracking reactions over the commercial catalyst were determined using initial ...
A. Moghadassi, N. Amini, O. Fadavi, M. Bahmani   +3 more
doaj   +1 more source

Plated nickel wire mesh makes superior catalyst bed [PDF]

, 1965
Porous nickel mesh screen catalyst bed produces gas evolution in hydrogen peroxide thrust chambers used for attitude control of space vehicles.
Sill, M.
core   +1 more source

Dynamics of a three-phase upflow fixed bed catalytic reactor [PDF]

, 1999
A dynamic model of an upflow fixed-bed catalytic reactor is developed to examine numerically transient axial temperature and concentration profiles obtained for the consecutive hydrogenation of 1,5,9-cyclododecateriene on a Pd/Al2O3 catalyst.
Delmas, Henri, Julcour-Lebigue, Carine, Le Lann, Jean-Marc, Stüber, Franck, Wilhelm, Anne-Marie   +4 more
core   +2 more sources

Evaluation and Performance Optimization of a Hydrogen Peroxide-Based Green Monopropellant Thruster for Steady-State Operations

Aerospace
Hydrogen peroxide (High Test Peroxide, HTP) emerges as a promising candidate for green space propulsion applications due to its lower toxicity compared to liquid conventional propellants such as hydrazine and nitrogen tetroxide.
Uğur Kokal, Mustafa Baysal, Nur Ber Emerce, Yiğit Yıldız, Arif Karabeyoğlu, İbrahim Özkol   +5 more
doaj   +1 more source

Comparison of the Effects of Fluidized-Bed and Fixed-Bed Reactors in Microwave-Assisted Catalytic Decomposition of TCE by Hydrogen

Advances in Materials Science and Engineering, 2012
Trichloroethylene (TCE) decomposition by hydrogen with microwave heating under different reaction systems was investigated. The activities of a series of catalysts for microwave-assisted TCE hydrodechlorination were tested through the fixed-bed and the ...
Lili Ren, Jin Zhang
doaj   +1 more source

Ignition means for monopropellant Patent [PDF]

, 1967
Catalyst bed ignition system for hydrazine ...
Evans, D. D., Lee, D. H.
core   +1 more source

Large scale production of multi-walled carbon nanotubes by fluidized bed catalytic chemical vapor deposition : a parametric study [PDF]

, 2007
A parametric study investigating the impact of temperature, run duration, total pressure, and composition of the gaseous phase on the catalytic growth of multi-walled carbon nanotubes (MWNT) has been performed.
Bernard, Daniel, Caussat, Brigitte, Gaillard, Patrice, Kalck, Philippe, Kihn, Yolande, Morançais, Aurore, Plee, Dominique, Serp, Philippe   +7 more
core   +2 more sources