48 results about "Titanium(II) oxide" patented technology

The present invention relates to high-purity titanium monoxide powder (TiO) produced by a process of combining a mixture of titanium suboxides and titanium metal powder or granules; reacting the mixture at a temperature above about 1200° C.; and fragmenting the body to form TiO particles suitable for application as e.g., capacitors. The TiO product is unusually pure in composition and crystallography, highly dense, and can be used for capacitors and for other electronic applications. The method of production of the TiO is robust, does not require high-purity feedstock, and can reclaim value from waste streams associated with the processing of TiO electronic components.

The invention provides a hot metal deoxidation method of a refinement and solidification structure, which comprises the following steps: proper amount of carbon powder, ferromanganese, ferrosilicon and other alloys are added into the molten steel to carry out deoxidizing and alloying. The method is characterized in that: before deoxidizing and alloying, proper amount of SiAlFe alloy is added to carry out pre-deoxidizing, the oxygen activity of the molten steel is controlled between 50 multiplied by 10<-6> and 100 multiplied by 10<-6> through pre-deoxidizing and deoxidizing and alloying and the temperature is controlled over 1550 DEG C; then proper amount of ferrotitanium is added to carry out final deoxidizing and aluminum content and titanium content of the steel deoxidized are respectively 0.003 percent to 0.012 percent and 0.015 percent to 0.050 percent. Under the conditions without changing the technique flow of steelmaking, adding equipment and increasing cost, the solidification structure of carbon steel can be obviously refined and isometric crystal proportion can be improved to more than 80 percent. Therefore, harmful function of alumina foreign impurities is eliminated, generation of large particles of single titanium oxide is avoided and blockage of a water gap is reduced.

A process for producing a titanium oxide is provided which comprises the steps of (i) reacting a titanium compound with ammonia in an amount exceeding the stoichiometric amount necessary to convert the titanium compound to a titanium hydroxide or reacting a titanium compound with a base at pH of from about 2 to about 7, to obtain a reaction product and (ii) calcining the obtained product. The titanium oxide exhibits a high photocatalytic activity by visible light radiation.

Compositions (120), which may be in the form of flexible films, molded bodies, or printable inks, can incorporate ceramic particles (122) comprising titanium monoxide (TiO) for purposes of electromagnetic interference (EMI) shielding at megahertz through gigahertz frequencies. One or more additional ceramic particles can also be included. The compositions comprise a composite material (120) which includes the ceramic particles (122) dispersed within a matrix material (121), such as a polymer. Methods associated with such compositions are also described.

The present invention relates to high-purity titanium monoxide powder (TiO) produced by a process of combining a mixture of titanium suboxides and titanium metal powder or granules; heating and reacting the compacted mixture under controlled atmosphere to achieve temperatures greater than about 1885° C., at which temperature the TiO is liquid; solidifying the liquid TiO to form a body of material; and fragmenting the body to form TiO particles suitable for application as e.g., capacitors. The TiO product is unusually pure in composition and crystallography, highly dense, and can be used for capacitors and for other electronic applications. The method of production of the TiO is robust, does not require high-purity feedstock, and can reclaim value from waste streams associated with the processing of TiO electronic components.

The invention provides a preparation method of high-purity titanium monoxide and belongs to the technical field of preparation of titanium monoxide. The preparation method comprises the steps that: high-purity titanium powder and high-purity titanium dioxide are prepared into powder with the granularity of 600-1000 meshes according to the mass ratio of 53: 47, and the powder is mixed; the preparedpowder is put into a specially-made aluminum oxide crucible, and the crucible is put into a calcining furnace; and under the condition of vacuum degree, calcining is performed for 4-8 hours at the high temperature of 1250-1400 DEG C to obtain the high-purity titanium monoxide. According to the method for preparing the high-purity titanium monoxide, the low-valence metal oxide is prepared from themetal and the metal high-valence oxide, and therefore, pollution of impurity metal is avoided.

The invention provides a solar cell, a production method and a photovoltaic module, and relates to the technical field of solar photovoltaics. The solar cell comprises a silicon substrate, a first titanium oxide layer, a second titanium oxide layer, a first electrode and a second electrode, wherein the first titanium oxide layer has electron selectivity, and the second titanium oxide layer has hole selectivity; the first electrode is located on the first titanium oxide layer; the second electrode is positioned on the second titanium dioxide layer; the first titanium oxide layer and the secondtitanium oxide layer are respectively positioned on a light-facing surface and a backlight surface of the silicon substrate; or the first titanium oxide layer and the second titanium oxide layer are respectively positioned in a first region and a second region of the backlight surface of the silicon substrate. The production process of the first titanium oxide layer and the second titanium oxide layer is less than or equal to 600 DEG C, the temperature is low, impurities are reduced, the service life of minority carriers is long, the cell structure is simplified, and the process is simplified.The first titanium oxide layer and the second titanium oxide layer can avoid direct contact between the silicon substrate and the electrodes, and the recombination rate is greatly reduced.

The invention discloses a preparation method for a self-active lithium titanate material. The preparation method comprises the following steps: step 1, adding lithium acetate into absolute ethyl alcohol, and carrying out uniform stirring for 1-3 hours so as to obtain a lithium alcohol solution; step 2, adding titanium monoxide powder into the lithium alcohol solution, and carrying out low-temperature ultrasonic treatment for 2-4 hours so as to obtain a mixed turbid liquid; step 3, uniformly spraying the mixed turbid liquid into a sealed reaction kettle, carrying out standing for 1-2 hours at aconstant temperature, and carrying out decompressing and cooling so as to obtain coated titanium monoxide particles; step 4, adding the coated titanium monoxide particles into a mold, and carrying out a constant-temperature and constant-pressure reaction for 2-4 hours so as to obtain a primary lithium titanate plate; and step 5, soaking the primary lithium titanate plate into tetrabutyl titanate,carrying out low-temperature ultrasonic treatment for 3-5 hours, then carrying out an extrusion reaction for 2-4 hours in a humid environment, and carrying out sintering so as to obtain the self-active lithium titanate material. According to the invention, the problem of poor conductivity of lithium titanate is solved; and titanium monoxide is used as an inner core, and lithium titanate is endowed with oxygen deficiency by utilizing the oxygen deficiency of the titanium monoxide, so an electron-hole structure of the lithium titanate is realized, and the overall conductivity and activity are greatly improved.

The invention belongs to the field of photocatalysis, and particularly relates to a preparation method of high-activity catalytic particles, and the high-activity catalytic particles are prepared by wrapping the surface of nano titanium monoxide with n-butyl titanate and hydrolyzing and converting into titanium dioxide to form multi-titanium photocatalytic particles which take titanium monoxide asa core and titanium dioxide as a wrapping layer. The problem that the quantum yield of titanium dioxide particles is low is solved, the titanium monoxide serves as an inner layer, the titanium dioxide serves as the wrapping layer, the formed titanium oxide particles have the oxygen deficiency characteristic, the activity of the titanium dioxide on the surface is greatly improved, and the photocatalytic degradation efficiency is effectively improved.

The invention relates to a zirconium titanate-based solid solution carrier material for a motorcycle exhaust catalyst carrier, which mainly consists of titanium oxide, zirconium oxide and a stabilizer; the mixing ratio by parts by weight is as follows: 10-45 parts of the zirconium oxide, 10-45 parts of the titanium oxide and 1-10 parts of the stabilizer; and the stabilizer is one or two of yttrium oxide, lanthanum oxide, cerium oxide, copper oxide and barium oxide, and the stabilizer exists in the form of zirconium titanate solid solution. The zirconium titanate-based solid solution carrier material has the advantages that as a metal oxide-doped zirconium titanate composite oxide with cheap price is used as the carrier material of a three-way catalyst, a valuable Rh metal can be saved and the cost of the product can be reduced. The using effect proves that the transformation efficiency of a catalyst prepared by the carrier material to main pollutants of NOx, HC and CO can be more than 90%.

The invention belongs to the field of photocatalysis, and particularly relates to a preparation method of a high-efficiency titanium-based photocatalyst, which comprises the following steps: step 1, sequentially putting a base material into distilled water and anhydrous ethanol for ultrasonic cleaning for 20-30min, and performing drying to obtain a clean base material; 2, adding polyvinyl alcoholinto distilled water, stirring the substances uniformly to obtain a polyvinyl alcohol solution, then dipping the base material into the polyvinyl alcohol solution, then taking base material out, and performing drying to obtain a polyvinyl alcohol film; 3, spraying nano titanium monoxide powder on the surface of the polyvinyl alcohol film, and then spraying n-butyl titanate on the surface to obtaina multi-film base material; and 4, putting the multi-film base material into a sintering kettle, and carrying out sealed sintering for 2-5h to obtain the titanium-based photocatalytic film. The method provided by the invention solves the problem of low electron yield of existing nano titanium dioxide, utilizes the oxygen deficiency of titanium monoxide to form a multi-titanium structure with n-butyl titanate converted titanium dioxide, enhances the activity of the surface titanium dioxide, and effectively improves the photocatalytic efficiency.

Titanium oxide grains of large specific area and high crystallinity with reduced internal defects, whose high photocatalytic activity as a photocatalyst is promising; and titanium oxide grains which even when heated at high temperature, exhibits low tendency of transformation to rutile crystal structure and exhibits low rate of sintering. As titanium oxide grains for composing a photocatalyst, use is made of those of the shape of a boxy polyhedron. The polyhedron constituting the titanium oxide grains is composed of one or more titanium oxide single-crystal polyhedrons. The crystallinity can be enhanced by causing the flatness ratio of single-crystal polyhedrons to fall within the range of 0.33 to 3.0. It is preferred that the polyhedron be a hexa to decahedron. The rutile transformation ratio R (700 to 24) is to be 7.5% or less while the rutile transformation ratio R (500 to 24) is to be 2.0% or less. Titanium oxide grains of the above configuration are produced through a process comprising feeding titanium tetrachloride vapor and oxygen into a synthetic tube of quartz glass and heating them from the exterior of the synthetic tube by means of an oxyhydrogen flame burner so as to effect thermal oxidation.

A nanofiber mat comprises metal oxide nanoparticles distributed on surface of metal oxide nanofibers, wherein the nanofiber mat has a surface area at least 150 m²/g, and the metal oxide is selected from titanium monoxide TiO_x, wherein 0.65<x<1.25, niobium monoxide NbO_x, wherein 0.982<x<1.008, vanadium (II) oxide VO_x, wherein 0.79<x<1.29, iron (II) oxide Fe_xO, wherein 0.833<x<0.957, manganese (II) oxide Mn_xO, wherein 0.848<x<1.000, titanium suboxide, Ti_nO_2n-1, wherein n>1, molybdenum suboxide, Mo_nO_3n-1, wherein n>1, Mo_nO_3n-2, wherein n>1, and vanadium suboxide, V_nO_2n-1, wherein n>1. Cathodes, anodes and batteries are made using the nanofiber mat. Processes for producing the metal oxide nanofiber mat and an electrode including it are also provided.

It is an object to provide a regenerated denitration catalyst whose denitration performance is restored compared with a denitration catalyst before use, utilizing a spent denitration catalyst, and a method for manufacturing the same. In a regenerated denitration catalyst according to the present disclosure, a spent denitration catalyst including a first titanium oxide as a main component, and a second titanium oxide are mixed. The spent denitration catalyst is already used in a denitration reaction in which nitrogen oxides in a gas are decomposed into nitrogen and water using a reducing agent. The second titanium oxide has a larger specific surface area per unit weight than the first titanium oxide. A content of the second titanium oxide based on a total weight of the first titanium oxide and the second titanium oxide is preferably 10% by weight or more and 90% by weight or less.

The invention belongs to the field of photocatalysis, and particularly relates to a preparation method of a graphene-based titanium dioxide photocatalyst; graphene oxide as a substrate material and titanium monoxide as a titanium source are used for forming the graphene-nano titanium dioxide composite photocatalyst. According to the preparation method, the problem that an existing graphene titanium dioxide composite material is difficult to prepare is solved, and conversion of titanium dioxide and formation of graphene are realized by utilizing reducibility of titanium monoxide and an oxygen group formation reaction of graphene oxide.