A stabilization process for an arsenic solution comprising thiosulfates, the process comprising: acidifying the arsenic solution to decompose the thiosulfates, to yield an acidified solution; oxidizing the acidified solution to oxidize residual As.sup.3+ to As.sup.5+ and reduced sulfur species to sulfates, to yield a slurry comprising elemental sulfur; separating elemental sulfur from the slurry to yield a liquid; oxidizing the liquid to oxidize residual reduced sulfur species, to yield an oxidized solution; and forming a stable arsenic compound from the oxidized solution.

The present invention provides a method for removing pentavalent antimony contaminants in water without adding a DC power supply and also provides a fuel cell capable of removing the pentavalent antimony contaminants in water by utilizing self-generated electric energy. A technical solution of the present invention is as follows: waste water is pumped into a reactor for reaction after a pH value of the waste water containing the pentavalent antimony contaminants adjusted to 3-6.5; the inside of a reactor is an anaerobic environment; and an iron anode is arranged in the reactor, a through hole is formed in a side wall of the reactor, a cathode for reducing oxygen by electrons and protons sealed and inlaid in the through hole, and a resistor is connected between the iron anode and the cathode in series. The present invention is suitable for a water treatment technology.

A stabilization process for an arsenic solution comprising thiosulfates, the process comprising: acidifying the arsenic solution to decompose the thiosulfates, to yield an acidified solution; oxidizing the acidified solution to oxidize residual As.sup.3+ to As.sup.5+ and reduced sulfur species to sulfates, to yield a slurry comprising elemental sulfur; separating elemental sulfur from the slurry to yield a liquid; oxidizing the liquid to oxidize residual reduced sulfur species, to yield an oxidized solution; and forming a stable arsenic compound from the oxidized solution.

A method of chlorinating an antimony fluorohalide catalyst is disclosed. In one embodiment the method comprises contacting an antimony fluorohalide catalyst that contains one or more fluorines with a regenerating agent selected from 2-chloro-3,3,3-trifluoropropene (1233xf), 1,1,1,3-tetrachloropropane (250fb), 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb), and combinations of 1233xf, 250fb, and 244bb, under conditions effective to exchange at least one fluorine in the antimony fluorohalide catalyst with chlorine. The method can be used to regenerate spent antimony fluorohalide catalyst, for example regenerating SbCl.sub.5 from SbF.sub.5.

Precursor compounds of sodium alloy(s), for use as negative electrode active material in a sodium-ion battery, as well as to a negative electrode have the precursor compound of sodium alloy(s), as well as a sodium-ion battery having a negative electrode of this kind.

Precursor compounds of sodium alloy(s), for use as negative electrode active material in a sodium-ion battery, as well as to a negative electrode have the precursor compound of sodium alloy(s), as well as a sodium-ion battery having a negative electrode of this kind.

A solid electrolyte material comprises Li, T, X and A wherein T is at least one of Sb, P, As, Si, Ge, Al, and B; X is one or more halogens or N; A is one or more of S or Se. The solid electrolyte material has peaks at 2?=14.5??0.50?, 16.8??0.50?, 23.9??0.50?, 28.1??0.50?, and 32.5??0.50 in X-ray diffraction measurement with Cu-K?(1,2)=1.54064 ? and may include glass ceramic and/or mixed crystalline phases.

Described herein is a battery cell having an anode or cathode comprising an acidified metal oxide (AMO) material, preferably in monodisperse nanoparticulate form 20 nm or less in size, having a pH<7 when suspended in a 5 wt % aqueous solution and a Hammett function H.sub.0>?12, at least on its surface.

Described are luminescent components with excellent performance and stability. The luminescent components comprise a first element 1 including first luminescent crystals 11 from the class of perovskite crystals, embedded a first polymer P1 and a second element 2 comprising a second solid polymer composition, said second polymer composition optionally comprising second luminescent crystals 12 embedded in a second polymer P2. Polymers P1 and P2 differ and are further specified in the claims. Also described are methods for manufacturing such components and devices comprising such components.

Described are luminescent components with excellent performance and stability. The luminescent components comprise a first element 1 including first luminescent crystals 11 from the class of perovskite crystals, embedded a first polymer P1 and a second element 2 comprising a second solid polymer composition, said second polymer composition optionally comprising second luminescent crystals 12 embedded in a second polymer P2. Polymers P1 and P2 differ and are further specified in the claims. Also described are methods for manufacturing such components and devices comprising such components.