228results about How to "Efficient oxidation" patented technology

The present invention is directed to an improved meter that utilizes a method of reducing the effects of interfering compounds in the measurement of analytes and more particularly to a method of reducing the effects of interfering compounds in a system wherein the test strip utilizes two or more working electrodes. In one embodiment of the present invention, a meter is described which applies a first potential to a first working electrode and a second potential, having the same polarity but a greater magnitude than the first potential, is applied to a second working electrode. The meter then measures the generated current and utilizes a predetermined algorithm to correct the measured current to compensate for the presence of interfering compounds in the sample.

Ag/Al₂O₃ materials may be packaged in a suitable flow-through reactor, close coupled to the exhaust manifold of a diesel engine, and upstream of other exhaust gas treatment devices, such as a diesel oxidation catalyst and a selective reduction catalyst for NOx. The silver/alumina catalyst material uses hydrogen in a cold-start engine exhaust and serves to oxidize NO to NO₂ in the relatively low temperature, hydrocarbon-containing, exhaust during a short period following the engine cold start, and to temporarily store NOx during the start-up period. After the exhaust has heated downstream catalytic devices, the silver yields its nitrogen oxides for conversion to nitrogen by the then-operating devices before NOx is discharged to the atmosphere.

Provided are: novel rutile titanium dioxide nanoparticles each having a high photocatalytic activity; a photocatalyst including the rutile titanium dioxide nanoparticles; and a method for oxidizing an organic compound using the photocatalyst. The rutile titanium dioxide nanoparticles each have an exposed crystal face (001). The rutile titanium oxide nanoparticles may be produced by subjecting a titanium compound to a hydrothermal treatment in an aqueous medium in the presence of a hydrophilic polymer. A polyvinylpyrrolidone, for example, is used as the hydrophilic polymer. An organic compound having an oxidizable moiety can be oxidized with molecular oxygen or a peroxide under photoirradiation in the presence of the photocatalyst including the rutile titanium oxide nanoparticles.

A binary platinum-ruthenium alloy suitable as the active component of a direct methanol fuel cell anode and use thereof in a fuel cell and the method of forming a catlyst therefrom.

The present invention provides a method for producing hydrocarbon fuels with ultra-low levels of sulfur. The method involves catalytic oxidation of the sulfurous compounds within the hydrocarbon fuel, followed by extraction of the oxidized (and polarized) sulfurous compounds using a polar solvent. The present invention teaches the involvement of ethanol during catalytic oxidation. In this way, the oxidation catalyst has a dual-role in the oxidation process: firstly the catalyst directly oxidizes the sulfurous compounds, and secondly the oxidation catalyst converts of a small portion of the alcohol to the corresponding peroxy acid, which also helps to drive the oxidation process.

The invention relates to a weather monitoring device, in particular to a new weather balloon, which comprises the following components by weight percent: 100 of centrifugal concentrated natural latex, 0.3 of casein, 0.3 of potassium hydroxide, 0.15 of peregal 0, 2 of sulphur, 1.5 of N-ethyl-N-phenyl dithiocarbamate zinc, 1 of N-phenyl-2-naphthylamine, 1.5 of zinc oxide, 1.5 of dibutyl sebacate, 1.5 of IR-550 polyisoprene latex, 0.05 of dispersing agent NF, 0.05 of borax, 0.3 of sodium butylnaphthalenesulfonate, 0.5 of sodium hexametaphosphate, 8 of dioctyl sebacate and 10 of chloroprene polymer. The new weather balloon provided by the invention has the advantages of high sounding altitude, long sounding time and wide application prospect.

A magnetic thin film deposition is patterned and protected from oxidation during subsequent processes, such as bit line formation, by an oxidation-prevention encapsulation layer of SiN. The SiN layer is then itself protected during the processing by a metal overlayer, preferably of Ta, Al, TiN, TaN or W. A sequence of low pressure plasma etches, using Oxygen, Cl₂, BCl₃ and C₂H₄ chemistries provide selectivity of the metal overlayer to various oxide layers and to the photo-resist hard masks used in patterning and metal layer and thereby allow the formation of bit lines while maintaining the integrity of the SiN layer.

The present invention relates to a novel encapsulated organometallic cluster complex catalyst and to a process for the preparation thereof. The oxo-bridged organometallic cluster complex of the invention has at least one atom of cobalt and manganese encapsulated in micro and mesoporous porous solids like aluminosilicate zeolites, aluminophosphates, carbon molecular sieves, silica and is particularly effective for oxidation of aromatic alkyl groups to the carboxyl groups in high yields.

Disclosed are interconnect structures and methods which utilize a bonding surface comprising copper nitride. The interconnect structures include a bonding surface comprising copper nitride which is effective at preventing oxidation and/or other unwanted corrosion of the underlying conductive material while providing the basis for a high conductivity bond. The copper nitride bonding surface provides a relatively non-conductive, corrosion-resistant bonding surface while at the same time being readily transformed into a conductive layer at or just prior to the time of bonding.

The invention discloses a semiconductor chip photo-electro-chemical mechanical polishing machining method and device. A chip is fixedly bonded to a polishing head through electrically-conductive adhesive. The lower portion of the chip is connected with a positive pole of an external power source through wires at an inner ring and an outer ring of an electrically-conductive sliding ring. A polishing pad is bonded to the bottom of a counter electrode disc. The counter electrode disc is fixed to the bottom of a polishing disc, and a through hole is machined in the position, corresponding to the polishing disc, of the counter electrode disc. The counter electrode disc is connected with a negative pole of the external power source through wires at the inner ring and the outer ring of an electrically-conductive sliding ring located above the counter electrode disc. Ultraviolet light transmitted by an ultraviolet light source can be cast to the surface of the chip through the through hole. Apolishing solution can be sprayed into the through hole and enter the contact area of the chip and the polishing pad. By means of the photo-electro-chemical mechanical polishing machining device, themachining method can be well implemented; the machining device has the advantages that the device is easy to operate and implement, and technological parameters can be flexibly adjusted; and the effects that in the practical machining process of the gallium nitride chip, the removal rate is high, and the surface quality achieved after machining is high are achieved.

The invention discloses a sieve-plate tower used for sintering machine flue gas desulfurization and a desulfurization process thereof, and belongs to the field of resource and environment protection. The device comprises an absorption tower, wherein the absorption tower is provided with a flue gas inlet, a flue gas outlet and a desulfurizer inlet, a demisting layer, a spraying layer, a sieve plate and a pulp chest are sequentially arranged in the absorption tower from top to bottom, the desulfurizer inlet is positioned above the flue gas inlet, the sieve plate is positioned between the desulfurizer inlet and the flue gas inlet, an overflow weir is arranged above the sieve plate, the sieve plate is divided into an overflow area and a gas liquid contact area by the overflow weir, sieve pores of the sieve plate are arranged in the gas liquid contact area, the gas liquid contact area is positioned at one side of the sieve plate close to the desulfurizer inlet, and an overflow pipe is arranged under the overflow area. The desulfurization process comprises the following steps that: sintering machine flue gas enters the absorption tower to be reacted with the desulfurizer at the gas liquid contact area and then is discharged after sulfur dioxide is removed, and desulfurized pulp generated by the reaction of the flue gas and the desulfurizer overflows into the pulp chest of the absorption tower. The invention is used for removing the sulfur dioxide in the sintering machine flue gas, the flue gas desulfurization efficiency is improved, and the desulphurization energy consumption is reduced.

The present invention relates to a dialysate regeneration device capable of continuously regenerating dialyzate in a dialysis treatment process, or regenerating the dialysate after dialysis, which can greatly reduce the amount of dialysate and clean water used in the dialysate process, The dialysate regeneration device is particularly suitable for dialysate in an emergent condition. The dialysate regeneration device comprises a pump, a reverse osmosis component, an electric catalysis reactor based on BDD electrode and a dialysate water tank. An upstream of the reverse osmosis component is communicated with a liquid outlet of a dialysis machine via the pump; the downstream of the reverse osmosis component comprises two branches, one branch (concentrated water) converges the other branch (clean water) through two groups of electric catalysis reactors and is communicated with a liquid inlet of the dialysate water tank via the confluence port ; a liquid outlet of the dialysate water tank is communicated with the liquid inlet of the dialyzate machine; a filter and air emission component are arranged on a communication channel between the outlet of the electric catalysis reactors and the confluence port.

The invention discloses a preparation method for a sustained release potassium permanganate microcapsule, comprising the following steps that (1), stearic acid is arranged in a reactor, absolute ethyl alcohol is added to the reactor, the reactor is heated in water bath, the solution in the reactor is sufficiently stirred until the stearic acid is completely dissolved; (2), polyethylene glycol 4000 and potassium permanganate are added to the reactor, potassium permanganate is homogeneously dispersed in the solution through ultrasound, the ultrasound is stopped, the solution is stirred and naturally cooled to the temperature of below 35 DEG C, and the reaction is finished after solid is completely dissolved out; and the mass ratio of potassium permanganate to stearic acid is 1:1-1:3. The preparation method for the sustained release potassium permanganate microcapsule solves the problems of low utilization rate of oxidant, high non-preference consumption and mass transfer of oxidant in the process of removing underground water pollutants by the in-situ chemical oxidation of liquid and powder potassium permanganate, and realizes the purposes of sustained release, effective transmission and efficient oxidation of the oxidant.

The invention relates to a preparation method for a coating on an electrolytic aluminum prebaked anode steel claw, which belongs to the technical field of metallurgical materials. The method comprises the following steps: removing dirt on the surface of the electrolytic aluminum prebaked anode steel claw through polishing, cleaning and drying the electrolytic aluminum prebaked anode steel claw and successively removing oil by using an oil removal agent and removing rust by using acid; subjecting the pretreated electrolytic aluminum prebaked anode steel claw to hot dip aluminum plating or fused salt electrolysis titanizing; and finally, carrying out micro-arc oxidation on the electrolytic aluminum prebaked anode steel claw treated by any method in a NaSiO3 solution, NaOH solution, NaH2PO4 solution or Na2SiO3 solution by using constant-current electrolysis so as to prepare the oxidation-resistant corrosion-resistant electrolytic aluminum prebaked anode steel claw treated by using a hot dip aluminum plating or fused salt electrolysis titanizing method and a micro-arc oxidation method. The preparation method provided by the invention overcomes the problems of high-temperature oxidation consumption of the anode steel claw and corrosion of electrolyte cryolite.

The invention discloses a low-friction-coefficient MoS2 based metal composite solid lubricating film. The low-friction-coefficient MoS2 based metal composite solid lubricating film consists of the following components in atomic percentage: 2at%-38at% of Cu, 0-12at% of Al and the balance of MoS2. A preparation method for the low-friction-coefficient MoS2 based metal composite solid lubricating filmcomprises the following steps of: pre-depositing a Ti or Al pre-combined layer on the surface of a substrate before magnetron sputtering and coating; and performing magnetron sputtering on a metal target and a MoS2 target, thereby obtaining the low-friction-coefficient MoS2 based metal composite solid lubricating film. The low-friction-coefficient MoS2 based metal composite solid lubricating filmdisclosed by the invention improves a composition system of combining a molybdenum disulfide solid lubricating film and a metal additive, solves the problem that the molybdenum disulfide solid lubricating film is relatively poor in wear resistance and is harsh in operating environment in use of the molybdenum disulfide solid lubricating film, provides multi-occasion using possibility of the molybdenum disulfide based film, and prolongs the service life of the film.

An alumina-based lean NO_x trap system for use in a HCCI engine exhaust is provided which includes at least one alumina-based lean NO_x trap comprising a catalyst, an alumina NO_x absorbent material, and optionally, from 0 to about 4 wt % of an alkaline earth metal oxide; and a conventional three-way catalyst. The lean NO_x trap system substantially oxidizes HC and CO and converts at least a portion of NO_x contained in the exhaust gas to N₂ at a temperature between about 150° C. to about 250° C. in HCCI mode. The system also effectively removes HC, CO and NO_x at high temperature when the engine is in SI mode (stoichiometric conditions). The alumina-based lean NO_x trap in the system also undergoes efficient desulphurization and maintains its activity with extended use.