1167 results about "Nickel oxides" patented technology

A method and system for providing a magnetoresistive structure is disclosed. The magnetoresistive structure includes a pinned layer, a nonmagnetic spacer layer, a free layer, a specular layer, a barrier layer, and a capping layer. The spacer layer resides between the pinned layer and the free layer. The free layer is electrically conductive and resides between the specular layer and the nonmagnetic spacer layer. The specular layer is adjacent to the free layer and includes at least one of titanium oxide, yttrium oxide, hafnium oxide, magnesium oxide, aluminum oxide, nickel oxide, iron oxide, zirconium oxide, niobium oxide, and tantalum oxide. The barrier layer resides between the specular layer and the capping layer. The barrier layer is nonmagnetic and includes a first material. The capping layer includes a second material different from the first material.

A catalyst system and a method for reducing nitrogen oxides in an exhaust gas by reduction with a hydrocarbon or oxygen-containing organic compound reducing agent are provided. The catalyst system contains a silver catalyst and a modifier catalyst, where the modifier catalyst contains a modifier oxide, where the modifier oxide is selected from the group consisting of iron oxide, cerium oxide, copper oxide, manganese oxide, chromium oxide, a lanthanide oxide, an actinide oxide, molybdenum oxide, tin oxide, indium oxide, rhenium oxide, tantalum oxide, osmium oxide, barium oxide, calcium oxide, strontium oxide, potassium oxide, vanadium oxide, nickel oxide, tungsten oxide, and mixtures thereof. The modifier oxide is supported on an inorganic oxide support or supports, where at least one of the inorganic oxide supports is an acidic support. The catalyst system of the silver catalyst and the modifier catalyst provides higher NO_x conversion than either the silver catalyst or the modifier catalyst alone.

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.

The invention realtes to a hydrofining hydrotreating catalyst, preparation and application thereof. The catalyst has Mu, Co, Ni as active component, adding adjuvant, and alumina as carrier. Calculated by total weight of the catalyst, including: 14-20% of molybdena, 1-6% of powder blue, 1-4% of nickel oxide, 1-3% of oxide of adjuvant alkaline metal, 1-5% of adjuvant p or/and Sb oxide, 2-6% of Si or/and Sn oxide; pore volume of the catalyst is 0.45-0.65 cm<3>/g, surface area to volume ratio is 150-280 m<2>/g. The catalyst is suit for C5-C8 oil with low distillate, especially for two stage of hydrofining hydrotreating of C6-C8 distillate oil, hydrogenizating saturated mono olefin utmost while hydrodesulfurizating, enables suit for oil with versatile sulfur content and high airspeed.

The invention discloses an unsaturated hydrocarbon hydrogenation catalyst which comprises a carrier, an active component and an additive; the active component is a mixture of nickel oxides and other metal oxides; the additive is at least two out of magnesia oxide, lanthanum oxide and ceria; counted by weight percentage, the unsaturated hydrocarbon hydrogenation catalyst comprises 5-15% of nickel oxides, 1-10% of other metal oxides, 1-10% of additive and remaining quantity of carrier; and the metal oxide is one or more oxides out of molybdenum oxide, cobalt oxide and ferric oxide. The invention also discloses a preparation method and applications of the unsaturated hydrocarbon hydrogenation catalyst. The unsaturated hydrocarbon hydrogenation catalyst has the advantages of high hydrogenation precision, strong side effect resistance, good thermal stability, long service life and the like, can be used for processing tail gas in indirect coal oil production industrial and can be also used for processing unsaturated hydrocarbon in synthesis gas.

The invention discloses a hydrodewaxing catalyst and its preparation method. With the weight of the catalyst as the reference, the catalyst contains the following components of: by weight, 5-10% of tungsten oxide, 1-5% of nickel oxide, 40-50% of nanometer ZSM-5 molecular sieve, 10-40% of macroporous alumina and the balance being a binder. The catalyst is prepared by the following steps of: firstly kneading the nanometer ZSM-5 molecular sieve, macroporous alumina and the binder to prepare a carrier, dipping loaded active metal, and finally carrying out hydrothermal treatment. The hydrodewaxing catalyst provided by the invention has a good shape-selective catalysis function and simultaneously has a good hydrofinishing function, and is especially suitable for the hydrofinishing and pour point reduction processes of a waxy hydrocarbon oil material containing high content of impurities such as sulfur, nitrogen and the like.

A semiconductor photocatalyst responsive to visual light is composed of the particles of metallic oxide chosen from iron oxide, nickel oxide, cabolt oide, copper oxide, etc, the non-metal element chosen from N, C, S, B and P and semiconductor nanoparticles chosen frmo TiO2, SnO2, ZnO, CdS and WO3.

An F and P contained hydrocatalyst with silicon oxide-aluminum oxide as its carrier contains nickel oxide (1-10 Wt%), molybdenum oxide and tungsten oxide (10-50), F (1-10) , phosphorus oxide (0.5-8) and carrier (rest). It has high hydrorefining performance. It is prepared by introducing F, P, Mo, Ni and W to carrier.

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.

In a non-aqueous electrolyte secondary battery provided with a positive electrode 1, a negative electrode 2, and a non-aqueous electrolyte solution, a lithium-containing composite nickel oxide is used as a chief component of the positive electrode material for the positive electrode, a lithium-containing titanium oxide is used as a chief component of the negative electrode material for the negative electrode, and the solvent of the non-aqueous electrolyte solution contains a cyclic carbonic ester and a chain carbonic ester in such a manner that the cyclic carbonic ester and chain carbonic ester are contained in amounts of not less than 10% by volume of the whole solvent, respectively, and the total content of the cyclic carbonic ester and the chain carbonic ester is not less than 60% by volume of the whole solvent.

The present invention discloses positive electrodes and their methods of fabrication. These electrodes are low in cost. Lithium rechargeable batteries that use these positive electrodes have excellent cycling properties at high temperature. The positive electrode of the embodiments of this invention comprises of a current collector coated by two layers of active materials for positive electrodes. The active material for the first layer of coating is one or more active materials selected from the following: spinel lithium manganese oxide, and spinel lithium manganese oxide derivatives. The active material for the second layer of coating is one or more active material selected from the following: lithium cobalt oxide, lithium cobalt oxide derivatives, lithium nickel oxide, and lithium nickel oxide derivatives. To fabricate these positive electrodes, a first layer of coating comprising of the active materials stated above is applied onto a current collector and then dried before a second layer of coating is applied onto the surface of the first layer of coating. The positive electrode is obtained after the current collector with the two layers of coating is dried a second time and then pressed to form a slice.

The invention relates to an essentially metallic target of a cathodic sputtering device, in particular a magnetic-field-assisted device, the said target mainly comprising nickel alloyed with at least one other minor element in order to reduce or eliminate its ferromagnetism. The invention also relates to the use of the target to manufacture an electrochromic material with anodic colourization as a thin layer based on alloyed nickel oxide.

Disclosed is a hydrogenation catalyst using silicon oxide and alumina as the carrying agent and its preparing process, after sintering, the catalyst comprises nickel oxide 1-10 wt%, molybdenum oxide and tungsten oxide with the total content of greater than 10-50 wt%, and balancing carrying agent.

The invention provides a pyrolysis gasoline nickel system selective hydrogenation catalyst and a preparation method of the pyrolysis gasoline nickel system selective hydrogenation catalyst and belongs to a catalyst containing metal or metal oxide or hydroxide. The pyrolysis gasoline nickel system selective hydrogenation catalyst is characterized by being provided with a mesopore-macropore or double-mesopore compound pore channel, taking aluminum oxide as a carrier, taking nickel as a main active component, taking molybdenum as an auxiliary active component and taking the metal oxide as an auxiliary agent; the pyrolysis gasoline nickel system selective hydrogenation catalyst is composed of following components in parts by weight: 15-19 parts of nickel oxide, 6.5-20 parts of molybdenum oxide, 2.2-4.5 parts of the auxiliary agent and the balance of the aluminum oxide; the auxiliary agent is one or the combination of more than two of potassium oxide, magnesium oxide and lanthanum oxide. The invention provides the pyrolysis gasoline nickel system selective hydrogenation catalyst which is large in pore capacity and high in specific surface, has good reaction activity, high hydrogenation reaction selectivity, good stability, good arsenic dissolving and glue resisting capabilities and is provided with the compound pore channel, and the preparation method of the pyrolysis gasoline nickel system selective hydrogenation catalyst. When the catalyst is used for selectively hydrogenating full-fraction pyrolysis gasoline, the average diene hydrogenation rate is 99%.

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

The invention relates to a method for preparing a lithium ion battery anode material doped with a nanometer oxide, belonging to the technical field of manufacturing processes of lithium ion battery batteries. The method is characterized in that trace amount of nanometer oxide power is doped in the preparation process of lithium manganate, lithium cobaltoxide and lithium iron phosphate; the doping amount is 0.5-1.0 mol percent of lithium salts; and the nanometer oxide is selected from one or two of alumina, magnesia, titanium oxide, chromic oxide, nickel oxide, monox and zirconia and the nanometer oxide is subject to ball milling, drying, sieving, calcinating, crushing, grading and other processes to obtain the nanometer oxide doped or coated lithium ion battery anode material. The lithium ion battery anode material has reversible initial capacitance, and remarkably-improved attenuation property, charging-discharging properties, high-temperature circulating property and electrochemistry stability.

Multi-layer devices comprising a layer of an electrochromic lithium nickel oxide composition on a first substrate, the lithium nickel oxide composition comprising lithium, nickel and a Group 5 metal selected from niobium, tantalum and a combination thereof.

The present invention provides a positive electrode active material for a non-aqueous electrolyte-based secondary battery, composed of a lithium/nickel composite oxide with high capacity, low cost and excellent heat stability, an industrially suitable production method therefor, and a high safety non-aqueous electrolyte-based secondary battery. A lithium/nickel composite oxide is produced by the following steps (a) to (c): (a) Nickel hydroxide or nickel oxyhydroxide having a specified component is prepared at a temperature of 600 to 1100° C., under air atmosphere. (b) Fired powders are prepared after mixing said nickel oxide and a lithium compound, and then by firing at a maximal temperature range of 650 to 850° C., under oxygen atmosphere. (c) Obtained fired powders are washed with water within a time satisfying the following equation (2) and then filtered and dried.

A<B/40   (2)

wherein, A represents washing time represented by unit of minute; and B represents slurry concentration represented by unit of g/L).

The invention discloses a nickel oxide nano rod array material, a method for preparing the same and application thereof, and belongs to the technical field of inorganic advanced nano materials. The nickel oxide nano rods are vertically and orderly grown on the nickel foam substrate, and the nickel oxide nano rods are 100 to 800 nanometers long and 5 to 30 nanometers wide. The preparation method comprises the following steps of: putting the nickel foam substrate in concentrated hydrochloric acid, deionized water and ethanol for ultrasonic cleaning respectively; dissolving soluble nickel salt and urea in deionized water to obtain clear solution; obliquely putting the nickel foam substrate in a reaction kettle, and moving the clear solution to the reaction kettle for hydrothermal reaction, and after reaction, using the cooling water to cool the reaction kettle to the room temperature; taking the nickel foam substrate out of the reaction kettle, and cleaning the nickel foam substrate withwater and ethanol; and drying the product in an oven, and calcining the dried product. The one-piece product has a very big capacitance value which can be well kept even under high current density and is high in cycle performance, so that the product is a super capacitor material with a great application prospect.

This invention provides a hydrogenation catalyst containing molecular sieve, which is composed of nickel oxide 1-10 wt. %, molybdena oxide and tungsten oxide 10-50 wt. %, and carrier. The catalyst is prepared by introducing nickel, molybdena and tungsten into the carrier containing molecular sieve. The catalyst has such advantages as high desulfurization and denitrification activity, and high ring-opening activity.

The invention relates to a graphene/nickel oxide laminated-structure composite film and a preparation method thereof. The preparation method comprises the following steps: putting graphite oxide and a solvent in the proportion of 0.5-2:1 (mg/mL) into a beaker, and carrying out the ultrasonic treatment for 0.5-5 hours to obtain the finely disseminated graphene oxide solution; adding a nickel nitrate solution to the graphene oxide solution in the volume proportion of 1:1-10, continuing to carry out the ultrasonic treatment for 0.5-5 hours to obtain the graphene oxide/nickel nitrate solution; vacuum-drying at 70-90 DEG C to obtain the graphene oxide/nickel nitrate film; and carrying out the heat treatment on the film at 330-1000 DEG C in the protective atmosphere to obtain the graphene/nickel oxide laminated-structure composite film. The composite film has favorable electric properties and mechanical properties; and the specific capacitance can reach 180-1300 F/g, the thickness is 0.02-10 mu m, and the particle size of the nickel oxide in the film is 1-200 nm. The invention has the advantages of simple preparation process, easy operation, controllable film thickness, scalable shape, adjustable scale, low cost and easy amplification of technique.

A hydrocatalyst with high hydrorefining performance contains nickel oxide (1-10 Wt%), molybdenum oxide and tungsten oxide (10-50) and aluminum oxide (rest). It is prepared by introducing Mo, Ni and W to the carrier (aluminum oxide).