1161results about "Bismuth compounds" patented technology

Arsenic is removed from water and other aqueous feeds by (1) treating the feed with a compound containing cerium in the +4 oxidation state, preferably cerium dioxide, to oxidize arsenic in the +3 oxidation state to arsenic in the +5 oxidation state and (2) removing the arsenic in the +5 oxidation state from the aqueous phase, normally by contacting the treated feed with alumina or other precipitating agent containing cations in the +3 oxidation state.

A garnet-type solid electrolyte contains a crystal having (110) face, (1-10) face, (112) face, (1-12) face, and (11-2) face, the garnet-type solid electrolyte being Li7La3Zr2O12. A battery includes a solid electrolyte interposed between a positive and a negative electrode, the solid electrolyte being the garnet-type solid electrolyte. A method of producing a garnet-type solid electrolyte represented by a composition formula Li7La3Zr2O12 and has (110) face, (1-10) face, (112) face, (1-12) face, and (11-2) face as a crystal face, including a step of preparing a lithium-containing compound, a lanthanum-containing compound, and a zirconium-containing compound; a step of mixing these compounds such that a molar ratio among the elements satisfies Li:La:Zr=a:b:c (where a is from 120 to 160, b is from 1 to 5, and c is from 1 to 5); and a step of heating the mixture between 400 and 1,200° C.

The invention belongs to the technological field of coal chemical processing and discloses a heat dissolving and catalyzing method using brown coal to prepare liquid fuel. The method comprises the following steps: 1) the brown coal is smashed and dried to prepare pulverized coal; 2) the pulverized coal, solvent and catalyst are stirred and mixed well to prepare coal slurry; wherein, the weight percent of the pulverized coal is 30 percent to 40 percent; the weight percent of the solvent is 60 percent to 70 percent; the quantity of the added catalyst is 0.5 percent to 1 percent of the weight of the pulverized coal; 3) the coal slurry is dissolved by heat and catalyzed to prepare heat dissolved and liquefied products; wherein, the temperature is 390 DEG C to 450 DEG C; the pressure is 5.0MPa to 9.0MPa; the reaction time is 30 minutes to 60 minutes; 4) the heat dissolved and liquefied products are separated to form gas-phase, liquid-phase and solid-phase products; 5) the liquid products are extracted and processed to form liquid fuel. The invention also discloses catalyst and solvent used in the method. The operation condition of the method of the invention is mild; the conversion ratio of the organic substances in the brown coal can achieve a higher level; after being processed, the liquid fuel product can be used for preparing engine fuel suiting national standards; and the preparation equipment is simple; the investment is small; the cost is low; and the invention is a coal liquefaction method suiting the national conditions of China.