Results 1 to 10 of about 1,875,239 (204)
5D operando tomographic diffraction imaging of a catalyst bed [PDF]
Nature Communications, 2018 AbstractWe report the results from the first 5D tomographic diffraction imaging experiment of a complex Ni–Pd/CeO2–ZrO2/Al2O3 catalyst used for methane reforming. This five-dimensional (three spatial, one scattering and one dimension to denote time/imposed state) approach enabled us to track the chemical evolution of many particles across the catalyst ...
A. Vamvakeros +10 more
openaire +7 more sources
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 +2 more
doaj +2 more sources
Development and testing of an additively manufactured monolithic catalyst bed for HTP thruster applications [PDF]
, 2016 Additive manufacturing (AM), also known as 3D printing, is a revolutionary manufacturing technology that has attracted many industries in the past two decades.
Adkins, N.J. +7 more
core +3 more sources
Chemical Engineering Transactions, 2022 One of the most challenging technical barriers for fixed bed Fischer-Tropsch (FT) reactors is the formation of a hot spot in the catalyst bed because of the tremendous release of reaction heat. Increasing the thermal conductivity of the catalyst bed is a
Jianqi Shen, Xinying Liu
doaj +1 more source
Effects of Geometrical Parameters of a Two-Sided Catalyst Bed on Flow and Thermal Fields of a Monopropellant Hydrazine Thruster [PDF]
فصلنامه علوم و فناوری فضایی, 2022 In present study, a hydrazine based monopropellant thruster decomposition chamber is simulated numerically. The catalyst bed separated in two sides, the particles size in upstream side is larger than those in downstream side.
Mohammad Reza Salimi
doaj +1 more source
Effects of catalytic bed position on hydrogen production by methane decomposition
Journal of Mechanical Engineering and Sciences, 2022 COx free hydrogen can be produced by thermal decomposition of methane. Such process is carried out in a fixed bed catalytic reactor. Where heterogeneous catalytic reaction occur when methane come in contact with catalyst bed at a temperature range of ...
Umair Sikander +3 more
doaj +1 more source
Green Chemistry, 2021 C2+ hydrocarbons are selectively produced in one-step catalytic CO2 conversion via designing the catalyst-bed configuration under non-thermal DBD plasma operating at low temperature and atmospheric pressure.
Jiajie Wang +6 more
semanticscholar +1 more source
Hydrogenation of Nitrobenzene in Trickle Bed Reactor over Ni/Sio2 Catalyst
Journal of Engineering, 2023 Trickle bed reactor was used to study the hydrogenation of nitrobenzene over Ni/SiO2 catalyst. The catalyst was prepared using the Highly Dispersed Catalyst (HDC) technique.
Majid I. Abdulwahab
doaj +1 more source
International Journal of Thermofluids, 2023 For a power-to-gas (PtG) system, methanation has attracted attention to synthesize methane from carbon dioxide and hydrogen. There is a problem that heat generated by the reaction causes thermal degradation of the catalyst.
Kazuhiro Yamamoto, Kohei Sakaguchi
doaj +1 more source
Chemical engineering research & design, 2021 The performance of fixed and fluidized bed reactors in the steam reforming of biomass fast pyrolysis volatiles was compared, with especial attention paying to the differences observed in catalysts deactivation.
E. Fernández +7 more
semanticscholar +1 more source