339 results about "Porous oxide" patented technology

Methods for forming dielectric layers, and structures and devices resulting from such methods, and systems that incorporate the devices are provided. The invention provides an aluminum oxide/silicon oxide laminate film formed by sequentially exposing a substrate to an organoaluminum catalyst to form a monolayer over the surface, remote plasmas of oxygen and nitrogen to convert the organoaluminum layer to a porous aluminum oxide layer, and a silanol precursor to form a thick layer of silicon dioxide over the porous oxide layer. The process provides an increased rate of deposition of the silicon dioxide, with each cycle producing a thick layer of silicon dioxide of about 120 Å over the layer of porous aluminum oxide.

A catalyst for purifying an exhaust gas includes a support and a noble metal loaded on the support. The support includes a mixture containing a porous oxide and a composite oxide. The composite oxide is expressed by the following formula:in which the values "a" and "b" are molar ratios and the value "a" falls in a range of from 0.4 to 2.5 and the value "b" falls in a range of from 0.2 to 0.7. The support includes a particle having a particle diameter of 5 mum or more in an amount of 30% by volume or more. With the thus arranged support, even when the catalyst is subjected to such a severe durability test that it is heated at 1,000° C. for 10 to 20 hours, it exhibits a high purifying activity, and its coating layer is inhibited from cracking or coming off.

A filter catalyst is for purifying exhaust gases, and comprises a honeycomb structure, a catalytic layer and a fibrous layer. The honeycomb structure comprises inlet cells clogged on a downstream side of a flow of the exhaust gases, outlet cells neighboring the inlet cells, and clogged on an upstream side of the flow of the exhaust gases, and cellular walls demarcating the inlet cells and the outlet cells, and having pores. The catalytic layer is formed on a surface of the cellular walls and an inner surface of the pores, and includes a porous oxide and a catalytic ingredient loaded on the porous oxide. The fibrous layer is formed on the outermost surface of the cellular walls of the inlet cells at least, and includes entangled fibrous substances composed of a heat-resistant material. The filter catalyst inhibits the pressure loss from increasing and upgrades the oxidizing rate of PMs greatly.

The invention relates to a porous carbon electrode materials and the preparation method, belonging to the electrochemistry and the novel energy source materials, wherein the porous carbon electrode materials adopt the template carbonization and the method combined with the CO2 post-processing using the meso-porous oxide silicon as the remplate, and the cane sugar, furfuryl alcohol, polyacrylonitrile and the like as the precursors, through the technology steps of the liquid phase impregnation, the high temperature carbonization and the template removal and the like, then combines high temperature process, obtaining the super capacitor porous carbon electrode materials. The porous carbon electrode materials prepared by the method has high surface area, large pore volume, adjustable pore structure and multilevel-microporous pore structure, wherein the pore channel is composed of a meso-porous of 2-5 nm and the microporous with the meso-porous wall of 0.1-2 nm, so the electrochemistry capacity of the prepared porous carbon electrode is marked increased, and the integral property of good.

The invention belongs to a continuous alumina fiber-reinforced aluminum oxide ceramic matrix composite material preparation technology and relates to a preparation method of a continuous alumina fiber-reinforced aluminum oxide ceramic matrix composite material. Firstly, an oxide organic polymer precursor is adopted as a raw material, a porous oxide ceramic coating is prepared through PIP process to serve as a fiber and matrix interface in the composite material, then a freeze drying process of aluminum oxide ceramic slurry is utilized to obtain a porous aluminum oxide matrix green body framework provided with three-dimensional network through holes, the oxide organic polymer precursor is utilized to repeatedly dip the porous aluminum oxide matrix green body framework to obtain a dense matrix green body, and finally the composite material green body is sintered to obtain the high-performance composite material. The freeze drying process is adopted in the matrix compactness process so that the high compactness matrix can be obtained, it can be also ensured that the interlayer layer does not crack before high-temperature heat treatment, obtaining of the porous oxide coating is ensured, so that a weak interface is formed between the fiber and the matrix of the composite material, and a toughness improving effect of the composite material is achieved.

The present invention provides a granular solid super strong acid catalyst and its preparation process. The active carrier is carried by granular basic carrier and contains oxide capable of binding with sulfate radical ion to form active catalyst layer; and the granular basic carrier contains porous oxide supporting the active catalyst layer and with certain strength and shape. During the preparation, granular basic carrier is first soaked into the salt solution of active carrier, ammonia water is added to regulate pH value greater than 8, the water solution is filtered out and filtered matter is washed and dried; and after soaking the dried granular carrier in sulfuric acid solution and filtering to eliminate sulfuric acid solution, the filtered matter is dried and roasted at 550-650 deg.c to obtain the catalyst.

An NOx storage member including at least one member selected from the group consisting of alkali metals, alkaline-earth metals and rare-earth elements, and at least one noble metal selected from the group consisting of Pt, Pd and Rh are loaded on a support including a porous oxide including TiO2 at least and ZrO2 on which Rh is loaded in advance.H2, which is generated by Rh/ZrO2, inhibits the sulfur poisoning, and the support, which includes TiO2 at least, secures the initial NOx purifying capability, thereby further inhibiting the sulfur poisoning. Accordingly, it is possible to inhibit the NOx storage member from the sulfur poisoning, and to maintain a high NOx conversion even after a durability test.

Disclosed herein is a dye-sensitized solar cell module having carbon nanotube electrodes, the solar cell module comprising: upper and lower transparent substrates; conductive transparent electrodes formed on the inner surfaces of the upper and lower transparent substrates; a plurality of porous oxide semiconductor negative electrodes formed on the upper conductive transparent electrode at a constant interval and having a dye adsorbed on the surface thereof; counter electrodes formed on the lower conductive transparent electrode in a thin film form and made of a carbon nanotube layer as a positive electrode portion corresponding to the negative electrodes; grid electrodes formed on the upper and lower conductive transparent electrodes between unit electrodes, each consisting of the negative electrode and the counter electrode corresponding thereto, the grid electrodes serving to collect electrons generated by photosensitization; connecting electrodes formed on the upper and lower conductive transparent electrodes and electrically connected with the grid electrode so as to transfer electrons moved from the grid electrodes to the outside; and electrolyte placed between the negative electrodes and the counter electrodes. Also disclosed is a method for manufacturing the solar cell module. According to the disclosed invention, a high-efficiency, large-area, dye-sensitized solar cell comprising carbon nanotubes is realized by forming a plurality of dye-sensitized solar cell units in a module arrangement, and forming grid electrodes and connection electrodes for the collection and movement of electrons. Thus, the disclosed invention has high practical utility.

Disclosed is a process for preparing nitrogen self-doped hierarchical porous oxide in the technical field of functional material by employing biological templates, steps of which comprises 1) selecting fresh biomaterial to fix in glutaraldehyde PBS stationary liquid, 2) soaking the biomaterial, after being rinsed by pure water and fixed, in HCl, then rinsing the biomaterial by distilled water for a plurality of times, soaking the biomaterial in salt solution of metal M, 3) rinsing the biomaterial obtained from step 2) by pure water, soaking in the salt solution of metal M, 4) rinsing the obtained biomaterial from step 3) to obtain biomaterial which is naturally dried, then heating within the range of 500-1000 DEG C in an oxygen atmosphere and insulating to obtain the nitrogen-doped porous oxide N-MxOy. The nitrogen self-doped porous oxide prepared by the invention not only is provided with a biological porous structure, but also effectively realizes nitrogen self-doping, and has the obviously strengthened advantage of capturing and absorbing light wave with different wave ranges.

The invention discloses a multistage nano-reactor catalyst for one-step direct preparation of aromatic hydrocarbons from synthetic gas, and a preparation method and an application thereof. The catalyst comprises a core layer iron-based Fischer-Tropsch catalyst, a porous oxide or porous carbon material transition layer and a molecular sieve shell layer having an aromatization function, wherein the shell layer molecular sieve can be further modified with a metal element or a nonmetal element, and the external surface of the molecular sieve is further modified with a silicon-oxygen compound to adjust the acidic site of the external surface and the aperture of the molecular sieve in order to inhibit the formation of heavy aromatic hydrocarbons. The preparation method of the multistage nano-reactor catalyst is characterized in that the transition shell layer can be prepared from the Fischer-Tropsch catalyst through multiple steps, the shell layer contains or does not contain an assistant, and the shell layer molecular sieve undergoes or does not undergo surface modification. The catalyst can be used for the direct preparation of the aromatic compounds, especially lightweight aromatic hydrocarbons, from the synthetic gas; the selectivity of the lightweight aromatic hydrocarbons in the hydrocarbons can reach 75% or more, and the content of the aromatic hydrocarbons aromatic hydrocarbons in a liquid phase product is not less than 95%; and the catalyst has a good stability and has a very good industrial application prospect.

A nanocatalyst for adsorbing and deactivating virus (influenza virus, adenovirus, etc) is composed of the carrier chosen from natural zeolite, synthetic molecular sieve, porous silica gel, aluminium oxide and titanium oxide, and the active component chosen from the nanoparticles of Ag, Cu, Zn, Au and Pt. Its advantage is high effect.

The invention relates to a catalyst for macro-porous oxide supported core-shell structure nanoparticles and a preparation method of the catalyst. The catalyst for the macro-porous oxide supported core-shell structure nanoparticles is obtained by using a simple oxide with a three-dimensional macro-porous structure as a supporter to support the core-shell structure nanoparticles; the core of the core-shell structure nanoparticles is noble metal; the shell material of the core-shell structure nanoparticles is one or combination of more selected from rare earth elements and transitional metal elements; the simple oxide is the catalytically inactive oxide; the average pore size of the macro-pore of the supporter is 50nm to 1mu m. The invention also provides a preparation method of the catalyst. Compared with a corresponding general catalyst, a nanoparticle catalyst and a three-dimensional ordered macro-porous oxide catalyst, the oxidation catalyst, prepared by supporting noble metal (core)-rare earth element or transitional metal element (shell) active component by the simple oxide with a three-dimensional ordered macro-porous structure, has higher catalytic activity.

A coated active biologic piezoelectric layer on Ti substrate is prepared from fluorohydroxy apatite (FHA) and barium titanate (BT) through cleaning the surface of Ti substrate, microarc oxidizing to form a porous oxide film layer, and electrophoretic deposition to form a FHABT layer on the surface of Ti substrate. Its advantages are easy control to content of F, high implantation stability, binding power to interface, biocompatibility and bioactivity, and high effect to promote generation of biologic bone and taking part energy conversion in human body.

In some embodiments, the present invention provides compositions that comprise: (1) a biodegradable polymer matrix; and (2) at least one biodegradable reinforcing particle that is dispersed in the matrix. In some embodiments, the biodegradable reinforcing particle is selected from the group consisting of porous oxide particles and porous semiconductor particles. In additional embodiments, the compositions of the present invention further comprise a (3) porogen particle that is also dispersed in the matrix. In further embodiments, the compositions of the present invention are also associated with one or more active agents. In various embodiments, the active agents are associated with the biodegradable polymer matrix, the biodegradable reinforcing particle, and/or the porogen particle. In various embodiments, the compositions of the present invention may be utilized as scaffolds, such as scaffolds for treating bone defects. Further embodiments of the present invention pertain to methods of making the compositions of the present invention.

The invention relates to a catalyst for catalytic conversion of biological cellulose. The catalyst is composed of active components, assistants and carries, the active components include copper oxide and/or nickel oxide, the assistants include alkaline earth oxides and/or transition metal oxides, and the carries are porous oxides. The invention further relates to a preparation method of the catalyst and a method for catalytic conversion of alcohol reforming coupling biological cellulose. The method for catalytic conversion of the alcohol reforming coupling biological cellulose has the advantages that reaction conditions are mild, external hydrogen is not needed to be fed, the conversion efficiency is high, and the like. The utilized catalyst has the advantages of being simple in synthesis, low in cost, high in catalytic conversion activity on alcohol reforming and biological cellulose and good in catalytic recycling stability.

The invention provides a method for patterning a metal surface. The method comprises the following steps of: firstly, cleaning a metal substrate by chemical or physical treatment and polishing the metal substrate; secondly, performing anodic oxidation treatment on the metal substrate so as to form a porous oxide film on the surface of the metal substrate, wherein the porous oxide film is provided with a plurality of pores with the pore diameters of between 20 and 400 nanometers; thirdly, providing a pattern layer and absorbing ink particles into the pores of the porous oxide film in a printing mode, wherein the particle sizes of the ink particles are between 10 and 300 nanometers; and lastly, sealing the pores so as to form a pore sealing layer which is continuously covered on the surface of the porous oxide film.

A method for making a semiconductor device, includes forming an oxide layer on a silicon substrate, forming a nitride layer over the oxide layer; depositing one of a doped oxide layer and an undoped porous oxide layer on the nitride layer, etching trenches through the one of the doped layer and the undoped porous oxide layer, the nitride layer, and the oxide layer, depositing an undoped oxide layer to fill the trenches, and patterning the undoped oxide by chemical mechanical polishing (CMP).

The invention relates to a bioelectrode formed by a three-dimensional ordered porous oxide modified conductive film and a preparation method of the bioelectrode. The bioelectrode comprises a conductive film electrode which is formed on an insulation substrate, wherein the film electrode is formed on the insulation substrate in a deposition manner through a physical vapor deposition process; a three-dimensional ordered porous oxide layer containing redox proteins is prepared in situ on the surface of the film electrode; the redox proteins are fixed in pores of the three-dimensional ordered porous oxide layer by adopting an adsorption way, a crosslink way or a covalent bonding way. The pores in the three-dimensional ordered porous oxide layer of the bioelectrode are communicated with one another, so that the dispersion of analyte in an ordered porous material modified layer on the surface of the conductive film can be favored, the dispersion capacity of the analyte can be improved, a mesoporous structure which can be matched with different enzyme molecules can be obtained by utilizing different mesoporous structure guiding agents, and the fixation of the enzyme molecules can be favored. The bioelectrode has good biological compatibility, the fixing effect of the redox proteins is good, the dispersion resistance of the analyte is small, and the electron transmission efficiency is high, so that a biological sensor with high sensitivity can be provided.