A new method to solidify Cr(VI), Cr(III), and Ni(II) simultaneously by using a glass-ceramics microstructure was used. For a crystallization temperature of 870 degrees C, base glass (air cooling) with a mass ratio of CaO / SiO2 (R(C/S)) of 6/16, 10/16 precipitated a CaNiSi2O6 crystalline phase that could not solidify Ni(II) stably, and with an incr...
A new method to solidify Cr(VI), Cr(III), and Ni(II) simultaneously by using a glass-ceramics microstructure was used. For a crystallization temperature of 870 degrees C, base glass (air cooling) with a mass ratio of CaO / SiO2 (R(C/S)) of 6/16, 10/16 precipitated a CaNiSi2O6 crystalline phase that could not solidify Ni(II) stably, and with an incr...
International audience
Because of their high reversible capacity and wide operation voltage window, P2-type layered transition metal oxides are considered as one type of potential cathode candidate for sodium-ion batteries. However, they still suffer from low kinetics, phase degeneration, and ambiguous mechanism of Na+ diffusion. Here, we synthesized a P2-type Na0.6Li0.0...
Because of their high reversible capacity and wide operation voltage window, P2-type layered transition metal oxides are considered as one type of potential cathode candidate for sodium-ion batteries. However, they still suffer from low kinetics, phase degeneration, and ambiguous mechanism of Na+ diffusion. Here, we synthesized a P2-type Na0.6Li0.0...
NiFe2O4 is one of the best oxygen carriers (OCs) for the biomass chemical looping gasification coupled with steam reforming. The kinetics analysis of biomass and NiFe2O4 is helpful for understanding their mechanism of interaction. In this work, a thermogravimetric analyzer, and distributed activation energy model based on a time integral (DAEMTI) w...
The stable deposition of reactive nanostructures on metal electrodes is a key process for modern technologies including energy conversion/ storage, electrocatalysis or sensing. Here a facile, scalable route is reported, which allows the bulk nanostructuring of copper foam electrodes with metal, metal oxide or metal hydroxide nanostructures. A conce...
The stable deposition of reactive nanostructures on metal electrodes is a key process for modern technologies including energy conversion/ storage, electrocatalysis or sensing. Here a facile, scalable route is reported, which allows the bulk nanostructuring of copper foam electrodes with metal, metal oxide or metal hydroxide nanostructures. A conce...
NiFe2O4 is one of the best oxygen carriers (OCs) for the biomass chemical looping gasification coupled with steam reforming. The kinetics analysis of biomass and NiFe2O4 is helpful for understanding their mechanism of interaction. In this work, a thermogravimetric analyzer, and distributed activation energy model based on a time integral (DAEMTI) w...
The regioselective, direct alkylation of electron-deficient N-heteroarenes is, in principle, a powerful and efficient way of accessing alkylated N-heteroarenes that are important core structures of many biologically active compounds and pharmaceutical agents. Herein, we report a ZnMe2-promoted, direct C2- or C4-selective primary and secondary alkyl...
