565 results about "Phosphorus oxide" patented technology

The invention provides a method for extracting lithium salts in lithium-containing brine. Lithium is extracted through a co-extraction agent, an extraction agent and a diluent, wherein the extract is a mixture of an amide compound and a neutral phosphorus oxide compound, the structural formula of the amide compound is shown in the specification, and the structural formula of the neutral phosphorus oxide compound is shown in the specification. The method provided by the invention further optimizes the properties of extracted lithium, so that the method is more applicable to the industrial application.

A P-contained hydrocatalyst with silicon oxide-aluminum oxide as its carrier contains nickel oxide (1-10 Wt%), molybdenum oxide and tungsten oxide (10-50), phosphorus oxide (1-9) and carrier (rest). It has high hydrorefining performance. It is prepared by introducing P, Mo, Ni and W to carrier.

The invention provides a method for extracting lithium salts in lithium-containing brine through an extraction method. Lithium is extracted through a co-extraction agent, an extraction agent and a diluent, wherein the extract is a mixture of an amide compound and a neutral phosphorus oxide compound, the structural formula of the amide compound is shown in the specification, and the structural formula of the neutral phosphorus oxide compound is shown in the specification. The method provided by the invention further optimizes the properties of extracted lithium, so that the method is more applicable to industrial application.

A carbon-containing lithium-iron composite phosphorus oxide for a lithium secondary battery positive electrode active material, includes particles being composed of a lithium-iron composite phosphorus oxide having an olivine structure whose basic composition is LiFePO₄, and being composited with carbonaceous fine particles. A process for producing the same includes the steps of mixing a lithium compound making a lithium source, an iron compound making an iron source, a phosphorus-containing ammonium salt making a phosphorus source and carbonaceous fine particles, thereby preparing a mixture, and calcicing the mixture at a temperature of from 600° C. or more to 750° C. or less.

A high-nickel multi-element positive electrode material for a lithium secondary battery comprises a base material and a composite cladding layer outside the base material, the general formula of the base material is LiaNi1-x-yCoxMyO2, wherein M is at least one of Mn and Al, a, x and y respectively represent the molar ratios of Li, Co and M in the base material, a is not smaller than 1 and not greater than 1.2, 1-x-y is not smaller than 0.6 and not greater than 1, x is greater than 0 and not greater than 0.4, and y is not smaller than 0 and not greater than 0.4; and the composite cladding layer is a mixture containing lithium phosphorus oxide and at least one of lithium zirconium/lithium titanium/lithium aluminum oxides. A preparation method of the positive electrode material comprises the following steps: preparing the base material; adding a metallic Zr/Ti/Al-containing compound, and carrying out high temperature heat treatment to obtain a lithium zirconium/lithium titanium/lithium aluminum oxide coated base layer; and adding phosphate, and carrying out low temperature heat treatment to obtain the high-nickel multi-element positive electrode material for the lithium secondary battery. The high-nickel multi-element positive electrode material has the advantages of low alkalinity, small gas swelling degree, good processability and good electrochemical performances.

The invention relates to a selective hydrodesulfurization catalyst contains cobalt and molybdenum as active components. The selective hydrodesulfurization catalyst is characterized in that silicon oxide and aluminum oxide are used as carriers of the catalyst; based on the total weight of 100%, the catalyst comprises 2-6wt% of cobalt oxide, 9-15 wt% of molybdenum oxide, 2-8wt% of alkaline earth metal oxide, 2-6wt% of phosphorus oxide, 3-5wt% of alkali metal oxide, 2-6wt% of silicon oxide and 54-80 wt% of aluminum oxide; and the catalyst has the specific surface area of 200-300m<2>/g and the pore volume of 0.5-0.7mL/g. The catalyst has high hydrogenation activity and selectivity, good stability, low research octane number loss and high liquid yield. The catalyst is suitable for selective hydrodesulfrization of low-quality gasoline and is particularly suitable for selective hydrodesulfrization of low-quality FCC (Family Car China) gasoline.

There is provided a catalyst for hydrotreating a hydrocarbon oil, which comprises an inorganic oxide support containing a certain amount of phosphorus oxide having provided thereon: at least one selected from metals in the Group 6 of the periodic table, at least one selected from metals in the Group 8 of the periodic table, and carbon, and which has a certain specific surface area, pore volume, and mean pore diameter, a process for producing the same, and a method for hydrotreating a hydrocarbon oil using the same. Thereby, the catalyst can be produced in a simple and convenient manner and sulfur compounds in the hydrocarbon oil can be exceedingly highly desulfurized and simultaneously nitrogen compounds can be diminished without necessitating severe operating conditions.

The invention provides a method for extracting lithium salt from lithium-contained brine by using an extraction process. The method comprises the step of extracting lithium by using a co-extraction agent, an extraction agent and a diluent, wherein the extraction agent is a mixture of an amide compound and a neutral phosphorus oxide compound, the amide compound has the structural formula shown in the specification, and the neutral phosphorus oxide compound has the structural formula shown in the specification. The method provided by the invention is used for further optimizing the performance of the extracted lithium and is more suitable for industrial application.

A sealing glass of a low melting point glass composition which is a phosphate glass that contains transition metal wherein the glass contains 15 to 35% of BaO and Sb₂O₃ (in total) and the ratio by weight of BaO to Sb₂O₃ or Sb₂O₃ to BaO is 0.3 or less. Particularly the transition metal is vanadium and the glass contains V₂O₅ of 45 to 60 wt % as vanadium oxide and P₂O₅ of 15 to 30 wt % as phosphorus oxide.

The bonding material is a mixture of a filler and a vanadate-phosphate glass that contains V₂O₅ as the main ingredient and the glass contains V₂O₅ of 45 to 60%, P₂O₅ of 20 to 30%, BaO of 5 to 15%, TeO₂ of 0 to 10%, Sb₂O₃ of 5 to 10%, and WO₃ of 0 to 5%. The particle size of the filler is in the range of 1 to 150 μm and the ratio of filler is 80% by volume or less of the adhesive glass.

The present invention relates to a catalyst made up by using zirconium base carrier material or zirconium base carrier material modified by phosphoric acid and vanadium phosphorus oxide loaded on said carrier material. The described zirconium base carrier material is zirconium oxide, the loaded quantity of vanadium phosphorus oxide is 25-47 wt% of total mass of said catalyst, in which the atomic ratio of vanadium and phosphorus is 1.2, its specific surface area is about 21-29 sq.m/g. When it is used as catalyst for normal-butane air oxidation reaction to prepare cis-butenedioic anhydride, in the typical reaction temperature zone of 380-420deg.C its per pass conversion rate is 38-89%, the cis-butenedioic anhydride selectivity is 29-69% and maximum cis-butenedioic anhydride yield is 61.2%. Said invention also discloses the preparation method of said catalyst.

The invention relates to a catalyst for removing mercaptan sulfur in catalytic gasoline at low temperature and a preparation method of the catalyst, belonging to the field of gasoline desulfurization. The catalyst for removing the mercaptan sulfur in the catalytic gasoline at low temperature is prepared by taking aluminium oxide or nano HZSM-5 molecular sieve and alumina composite solid acid as carriers, and comprises the following components based on the total mass of the catalyst: 5-20% of zinc oxide, 5-15% of ferric oxide, 0.5-5% of lanthanum oxide and 0.5-5% of phosphorus oxide. The catalyst disclosed by the invention is applicable to a low temperature hydrogenation sweetening reaction of the catalytic gasoline and has the characteristics of high sweetening activity, low olefin hydrogenation saturation activity, high liquid yield, nearly no loss of octane number and the like.

A method and composition for enhancing corrosion resistance, wear resistance, and contact resistance of a device comprising a copper or copper alloy substrate and at least one metal-based layer on a surface of the substrate. The composition comprises a phosphorus oxide compound selected from the group consisting of a phosphonic acid, a phosphonate salt, a phosphonate ester, a phosphoric acid, a phosphate salt, a phosphate ester, and mixtures thereof; an aromatic heterocycle comprising nitrogen; and a solvent having a surface tension less than about 50 dynes/cm as measured at 25° C.

A method for manufacturing of an improved attrition resistant catalyst having an oxide-rich surface layer involving forming an aqueous slurry comprising; catalyst, catalyst precursor or catalyst support particles (e.g., vanadium/phosphorus oxide, V/P/O catalyst), a large particle colloidal oxide sol (e.g., 200 Å, 600 Å, 750 Å colloidal silica, sodium stabilized) as the major oxide-rich surface layer forming component, and a second oxide-rich surface layer forming component solution wherein the solute is selected from the group consisting essentially of a precursor of the oxide-rich surface with average particle size no greater than 5 nm (e.g., aqueous silicic acid or polysilicic acid), a colloidal oxide sol wherein oxide particles in the sol have an average size below 10 nm (e.g., 50 Å colloidal silica), and mixtures thereof and then spray drying the slurry to form porous microspheres of attrition resistant catalyst; and, calcining/activating the spray dried microspheres. Such a catalyst is particularly useful and exhibits improved performance in oxidation processes such as the catalytic air oxidation of butane to maleic anhydride.

A catalyst for preparing propene or ethene from olefin by catalytic cracking with high high-temp hydrothermal stability and no coking is proportionally prepared from the ZSM-5 molecular sieve whose mole ratio of SiO2 to Al2O3 is 20-800, RE oxide, and phosphorus oxide as modifier.

A cathode material capable of improving capacity and superior low temperature characteristics, and a battery using the cathode material are provided. A cathode and an anode are layered with an electrolyte layer and a separator in between. The cathode contains a complex oxide containing lithium, manganese, nickel, and cobalt; a complex oxide containing lithium and at least one of nickel and cobalt; and a complex oxide containing lithium and manganese and having a spinel structure or a phosphorus oxide containing lithium and iron at a given ratio.

The invention relates to a method for extracting lithium from salt lake brine by an extraction method. The method is suitable for a production process that lithium carbonate and lithium chloride are prepared from high magnesium-lithium ratio salt lake brine and concentrated old brine which contains lithium of salt pan. Co-extraction agent FeCl3, extraction agent and diluent are adopted to carry out lithium extraction, wherein the extraction agent is mixture of neutral phosphorus oxide compound A and phase modifier B, the phase modifier B is organic compound which can generate protonation reaction with the neutral phosphorus oxide compound A in an extraction reaction process, an extraction complex composition obtained after the extraction agent is used for lithium extraction is xLiFeCl4.yHCl.aA.bB, and the extraction complex can be easily dissolved in diluent; an extraction system has good phase splitting performance and reverse extraction and regeneration performance, and the lithium extraction technology of the extraction method is further optimized. The method has a low requirement on equipment, the adopted organic compound is cheap and can be easily obtained, and therefore, the method is suitable for industrial application.

The invention discloses a preparation method for a vanadium-phosphorus oxide catalyst. The method comprises the following steps: (1) adding a mixture of isobutanol and benzyl alcohol, vanadium pentoxide and an additive into a fluidized bed reactor; introducing a fluid into the reactor, so that the materials are in a boiling rolling state; heating the reactor to a reaction temperature for reacting; introducing a certain amount of concentrated phosphoric acid into the reactor, and keeping the boiling state to obtain a blue or light blue slurry reaction liquid; (2) performing drying and roasting treatment on the materials in the step (1) to obtain a precursor of the vanadium-phosphorus oxide catalyst, wherein the materials are kept in a boiling state during the process; (3) introducing an activated gas into the reactor, and performing activation treatment on the precursor of the catalyst to obtain the vanadium-phosphorus oxide catalyst, wherein the materials are kept in a boiling state during the process. The method is simple in process, high in production efficiency, and high in repeatability; the prepared catalyst is small in grain size, large in specific surface area, high in strength and low in abrasion; when the catalyst is used for a catalytic reaction for preparing maleic anhydride by oxidizing n-butane, the conversion rate of n-butane is high, and the maleic anhydride selectivity is high.