Eureka-AI is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Eureka AI

5711 results about "Tungsten" patented technology

Tungsten, or wolfram, is a chemical element with the symbol W and atomic number 74. The name tungsten comes from the former Swedish name for the tungstate mineral scheelite, tung sten or "heavy stone". Tungsten is a rare metal found naturally on Earth almost exclusively combined with other elements in chemical compounds rather than alone. It was identified as a new element in 1781 and first isolated as a metal in 1783. Its important ores include wolframite and scheelite.

Conductive lithium storage electrode

A compound comprising a composition Ax(M′1-aM″a)y(XD4)z, Ax(M′1-aM″a)y(DXD4)z, or Ax(M′1-aM″a)y(X2D7)z, and have values such that x, plus y(1-a) times a formal valence or valences of M′, plus ya times a formal valence or valence of M″, is equal to z times a formal valence of the XD4, X2D7, or DXD4 group; or a compound comprising a composition (A1-aM″a)xM′y(XD4)z, (A1-aM″a)xM′y(DXD4)z(A1-aM″a)xM′y(X2D7)z and have values such that (1-a)x plus the quantity ax times the formal valence or valences of M″ plus y times the formal valence or valences of M′ is equal to z times the formal valence of the XD4, X2D7 or DXD4 group. In the compound, A is at least one of an alkali metal and hydrogen, M′ is a first-row transition metal, X is at least one of phosphorus, sulfur, arsenic, molybdenum, and tungsten, M″ any of a Group IIA, IIIA, IVA, VA, VIA, VIIA, VIIIA, IB, IIB, IIIB, IVB, VB, and VIB metal, D is at least one of oxygen, nitrogen, carbon, or a halogen, 0.0001<a≦0.1, and x, y, and z are greater than zero. The compound can have a conductivity at 27° C. of at least about 10−8 S/cm. The compound can be a doped lithium phosphate that can intercalate lithium or hydrogen. The compound can be used in an electrochemical device including electrodes and storage batteries and can have a gravimetric capacity of at least about 80 mAh/g while being charged/discharged at greater than about C rate of the compound.

Infrared detector with micro-bridge structure and manufacturing method thereof

The invention relates to an infrared detector with a micro-bridge structure, which belongs to the technical field of micro-electromechanics, and comprises a silicon substrate as a read-out circuit of the infrared detector; a metal reflecting layer deposited on the silicon substrate; a dielectric layer which is deposited in a groove of the metal reflecting layer and has the height being consistentwith that of the metal reflecting layer; a sacrifice layer and a first release protection layer used as protection of release of the sacrifice layer which are deposited on the dielectric layer and the metal reflecting layer and form through holes by lithography and etching; a copper or tungsten pier which is deposited in the through hole of the sacrifice layer; a metal electrode deposited on the copper or tungsten pier and the first release protection layer; and a sensitive material detecting layer which is deposited on the metal electrode and the first release protection layer. A Cu-column micro-bridge structure is manufactured by using the damascene process, and a flat micro-bridge plane is manufactured by introducing the chemical mechanical polishing process (CMP), thereby being conductive to the follow-up process and improving the performances.

Hydrogenating and pour point depressing catalyst and its preparing method

The invention discloses a hydro dewaxing catalyst and the preparation method. In the method, compound with hydrogen active component is mixed with aluminum dry gel to prepare adhesive; and then the adhesive is mixed with shape-selective cracked zeolite and is pinched in shape; after drying and roasting, catalyst carrier is yielded; then the catalyst carrier is impregnated in the impregnating solution containing the rest active component and promoter; and after drying and roasting again, the catalyst of the invention is yielded. The invention is capable of taking full advantage of the alumina used as adhesive in the catalyst carrier under low hydrogen active component content conditions to prepare adhesive containing all the molybdenum and tungsten and part of the nickel, thereby keeping a certain amount of nickel oxide in the zeolite. The rest of the active metal component is distributed in the alumina, keeping the zeolite passage unobstructed with good hydro dewaxing effect and effectively improving the hydrogen addition and purification performance of the catalyst. The catalyst is especially suitable for hydro dewaxing of raw material containing wax and with high nitrogen impurity content and suitable for hydrogen addition and purification.

Hydrogenation method for coal tar suspension bed of heterogeneous catalyst

The invention relates to a hydrogenation method for a coal tar suspension bed of a heterogeneous catalyst. The method comprises processes of coal tar raw material pretreatment and distillatory separation, coal tar heavy fraction suspension bed hydrogenation cracking and conventional light fraction oil extraction, wherein the suspension bed hydrogenation reaction temperature is between 320 and 480DEG C, the reaction pressure is 8 to 19MPa, the volume air speed is 0.3 to 3.0h<-1>, the hydrogen oil volume ratio is 500 to 2,000, the catalyst is a powdery granular coal tar suspension bed hydrogenation catalyst of a single metal active ingredient containing molybdenum, nickel, cobalt, tungsten or iron or a composite multi-metal active ingredient, the adding amount of the catalyst is based on the ratio of the metal quantity of the active ingredient to the weight of the coal tar raw materials of 0.1: 100-4: 100, most of tail oil containing the catalyst after lightweight oil is separated froma hydrogenation reaction product is directly circulated to a hydrogenation bed reactor, a small part of tail oil is subjected to catalyst removal treatment and then circulated to the hydrogenation bed reactor to be subjected to further lightweight treatment, and the heavy oil is totally or furthest circulated. The method fulfills the purposes of maximum production of the lightweight oil in the coal tar and cyclic utilization of the catalyst, and greatly improves the utilization efficiency of the raw materials and the catalyst.
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products