Sintering and carbidization under simulated high conversion on a cobalt-based Fischer-Tropsch catalyst; manganese oxide as a structural promotor

The commercial application of cobalt-based Fischer-Tropsch synthesis (FTS) suffers from catalyst deactivation. One of the main deactivation mechanisms under industrial conditions is sintering. In this work, we explored the role of manganese oxide as a structural promoter against sintering in a carbon nanofiber supported cobalt model catalyst....

Arsenic oxidation and removal with Manganese oxides in filters

The actual European Union (EU) guidelines for allowed concentration of arsenic (As) in drinking water fix a maximum of 10 ?g/L. However, this limit is expected to become more stringent: the recommended health related limitation from the US Natural Resources Defense Council is below 1 ?g/L. In Dutch groundwater treatment plants, the produced...

Reduction of ripening time of full-scale manganese removal filters with manganese oxide-coated media

Effective manganese removal by conventional aeration-filtration with virgin filter media requires a long ripening time. The aim of this study was to assess the potential of manganese oxide-coated media to shorten the ripening time of filters with virgin media, under practical conditions. A full scale filter filled with virgin sand and a full...

Characterization of Li4Ti5O12 and LiMn2O4 spinel materials treated with aqueous acidic solutions

In this thesis an investigation of two spinel materials, Li4Ti5O12 and LiMn2O4 used for Li-ion battery applications is performed interms of formation and reactivity towards acidic solutions. Subsequent characterizations such as structural, magnetic, chemical, and electrochemical characterizations are performed and discussed.

Electrode and solid electrolyte thin films for secondary lithium-ion batteries

Dynamically compacted rechargeable ceramic lithium batteries. Solid state ionics - 95. Part II

Octahedral site occupation of lithium in LixMn2O4

Diffusion enhancement in LixMn2O4

Manganese oxide (MnO) thin film cathode for rechargeable microbatteries

Polycrystalline, glassy and thin films of LiMn2O4