Results 21 to 30 of about 160,248 (216)

Engineering of Nanostructured Carbon Catalyst Supports for the Continuous Reduction of Bromate in Drinking Water

C, 2022
Recent works in the development of nanostructured catalysts for bromate reduction in drinking water under hydrogen have highlighted the importance of the properties of the metallic phase support in their overall performance.
João M. Cunha Bessa da Costa, José R. Monteiro Barbosa, João Restivo, Carla A. Orge, Anabela Nogueira, Sérgio Castro-Silva, Manuel F. Ribeiro Pereira, Olívia S. Gonçalves Pinto Soares   +7 more
doaj   +1 more source

Microwave assisted heterogeneous catalysis: effects of varying oxygen concentrations on the oxidative coupling of methane [PDF]

, 2009
The oxidative coupling of methane was investigated over alumina supported La2O3/CeO2 catalysts under microwave dielectric heating conditions at different oxygen concentrations.
A Machocki, Binghua Ni, C Chen, C Marun, C Marun, C Wonihl, Colleen Lee, D Koni, FQ Chen, G Bond, G Roussy, JJ Carberry, JKS Wan, K Takanabe, P Nilsson, PS Anjana, Run-Cang Sun, SL Suib, SL Suib, T Moeller, T Yamamoto, WM Nelson, XL Zhang, XL Zhang, XL Zhang, XL Zhang, Xunli Zhang, YT Chua, Z Fakhroueian   +28 more
core   +1 more source

Heat and Mass Transfer in a Reforming Catalyst Bed: Quantitative Evaluation of the Controlling Factor by Experiment

Journal of Thermal Science and Technology, 2007
Heat and mass transfer characteristics in a reforming catalyst bed have been experimentally investigated. Experiments were carried out with a single bench-scaled reforming tube which was filled with reforming catalyst. The tube wall was uniformly heated,
Yutaka USAMI, Shoichiro FUKUSAKO, Masahiko YAMADA   +2 more
doaj   +1 more source

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., Attallah, M.M., Essa, K., Hassanin, H., Musker, A.J., Roberts, G.T., Smith, M., Tenev, N.   +7 more
core   +2 more sources

Bacteria inactivation using spinel cobalt ferrite catalyst

Фізика і хімія твердого тіла, 2023
The E. coli inactivation using hydrogen peroxide (H2O2) and cobalt ferrite granulated catalyst was investigated in a fixed-bed flow reactor. CoFe2O4 catalyst was synthesized by the co-precipitation method, granulated, and annealed at 1150°C.
Nazarii Danyliuk, Ivanna Lapchuk, Tetiana Tatarchuk, Roman Kutsyk, Volodymyr Mandzyuk   +4 more
doaj   +1 more source

Behavior of different soot combustion catalysts under NOx/O2. Importance of the catalyst–soot contact [PDF]

, 2013
Four different catalysts (Pt/Al2O3, Ce0.8Zr0.2O2, PrO2−x and SrTiCuO3) have been investigated on a laboratory scale to evaluate their potential as diesel soot combustion catalysts under different experimental conditions, which simulate the situation ...
Bueno López, Agustín, Garcia-Garcia, Avelina, Guillén Hurtado, Noelia, López Suárez, Franz Edwin   +3 more
core   +2 more sources

Investigation of the possibility to combine bulk and supported catalysts to increase the efficiency of hydrotreating process

Chimica Techno Acta
Hydrotreating catalysts are of great interest for researchers in oil refining. Nowadays, bulk NiMoW catalysts attract significant attention due to much higher activity in target hydrotreating reactions.
Ksenia A. Nadeina, Polina P. Mukhacheva, Yuliya V. Vatutina, Sergey V. Budukva, Maxim A. Panafidin, Evgeniy Yu. Gerasimov, Oleg V. Klimov   +6 more
doaj   +1 more source

Continuous Process for Biodiesel Production in Packed Bed Reactor from Waste Frying Oil Using Potassium Hydroxide Supported on Jatropha curcas Fruit Shell as Solid Catalyst

Applied Sciences, 2012
The transesterification of waste frying oil (WFO) with methanol in the presence of potassium hydroxide catalyst supported on Jatropha curcas fruit shell activated carbon (KOH/JS) was studied.
Achanai Buasri, Nattawut Chaiyut, Vorrada Loryuenyong, Chao Rodklum, Techit Chaikwan, Nanthakrit Kumphan   +5 more
doaj   +1 more source

Heat and mass transfer in a reforming catalyst bed: Analytical prediction of distributions in the catalyst bed

Heat Transfer—Asian Research, 2000
AbstractHeat and mass transfer characteristics within a reforming catalyst bed have been analytically investigated. A numerical analysis was carried out in a two‐dimensional steady‐state model of a reforming catalyst bed. The reforming tube was filled with catalyst and the tube wall was uniformly heated; a mixture of steam and methane was reformed ...
Yutaka USAMI, Shoichiro FUKUSAKO, Masahiko YAMADA   +2 more
openaire   +2 more sources

Demonstration of Polyethylene Nitrous Oxide Catalytic Decomposition Hybrid Thruster with Dual-Catalyst Bed Preheated by Hydrogen Peroxide

Aerospace
Although various studies on nitrous oxide as a prospective green propellant have been recently explored, a polyethylene nitrous oxide catalytic decomposition hybrid thruster was barely demonstrated due to an inordinately high catalyst preheating time of ...
Seungho Lee, Vincent Mario Pierre Ugolini, Eunsang Jung, Sejin Kwon   +3 more
doaj   +1 more source