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2 results about "Sodium stannate" patented technology
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Sodium stannate, formally sodium hexahydroxostannate(IV), is the inorganic compound with the formula Na₂[Sn(OH)₆]. This colourless salt forms upon dissolving metallic tin or tin(IV) oxide in sodium hydroxide, and is used as a stabiliser for hydrogen peroxide. In older literature, stannates are sometimes represented as having the simple oxyanion SnO₃²⁻, in which case this compound is sometimes named as sodium stannate–3–water and represented as Na₂SnO₃·3H₂O, a hydrate with three waters of crystallisation. The anhydrous form of sodium stannate, Na₂SnO₃, is recognised as a distinct compound with its own CAS Registry Number, 12058-66-1 , and a distinct materials safety data sheet.
A metal seawater fuel cell
PendingCN122091655AIncrease specific energyLow open circuit hydrogen evolution corrosion rateCell electrodesFuel cellsElectrolytic agentElectrical battery
This invention discloses a full-ocean-depth metal-seawater fuel cell. The metal anode material mainly comprises one or more of the following components: Mg, Sn, B, La, Ce, Pr, Nd, Dy, Sm, Ti, and Ca, with the balance being Al. The electrolyte of this invention is a mixed aqueous solution of natural seawater, sodium stannate, zinc oxide, zinc sulfate, sodium carbonate, and cerium chloride, with the pH adjusted to between 12 and 14. The metal anode of this invention, in the above electrolyte, not only significantly reduces the hydrogen evolution corrosion rate but also directionally induces product formation, thereby improving electrochemical performance. The preparation method of this metal anode and electrolyte is simple, applicable to different temperature and pressure variations and operating current densities, and can be applied to metal-seawater fuel cells under various operating conditions at full ocean depth.
Owner:DALIAN INSTITUTE OF CHEMICAL PHYSICS CHINESE ACADEMY OF SCIENCES
Preparation of a vermiculite-based flame-retardant and smoke-suppressing filler and its application in silicone foam
PendingCN122080501AHighly effective flame retardancyHighly effective smoke suppression performanceSulfate zincPolymer science
This invention discloses a vermiculite-based flame-retardant and smoke-suppressing filler, its preparation method, and its application in silicone foam, belonging to the technical field of flame retardant and flame-retardant material preparation. This invention utilizes expanded vermiculite, sodium stannate, zinc sulfate, etc., as raw materials, and synthesizes zinc hydroxystannate nanoparticles on the surface of expanded vermiculite via an in-situ precipitation method, obtaining a flame-retardant and smoke-suppressing functional filler composed of zinc hydroxystannate encapsulating expanded vermiculite. The synthesis of this filler is completed in an aqueous phase, the preparation process is simple and environmentally friendly, and it exhibits good compatibility with silicone foam, effectively improving its flame-retardant and smoke-suppressing properties, showing broad application prospects in flame-retardant and smoke-suppressing silicone foam.
Owner:FUZHOU UNIV