35results about How to "Slightly corroded" patented technology

An object of the present invention is to provide electrolytic manganese dioxide to be used as a cathode active material for an alkali-manganese dry cell, which has a high alkali potential and is provided with a high reactivity and packing efficiency as a cathode for the cell, and which is excellent in the middle rate discharge characteristic, and electrolytic manganese dioxide excellent in the high rate discharge characteristic and the middle rate discharge characteristic, which will not cause corrosion of metal materials, and a method for its production.In the present invention, electrolytic manganese dioxide having an alkali potential of at least 280 mV and less than 310 mV, and FWHM of at least 2.2° and at most 2.9°, is used. It is preferred that of the electrolytic manganese dioxide, the (110) / (021) peak intensity ratio in the X-ray diffraction peaks is at least 0.50 and at most 0.80, and the (110) interplanar spacing is at least 4.00 Å and at most 4.06 Å. Further, electrolytic manganese dioxide wherein the JIS-pH (JIS K1467) is at least 1.5 and less than 2.6, the sodium content is at least 0.02 wt % and less than 0.10 wt %, the sulfate group content is less than 1.30 wt %, the median diameter is at least 30 μm and at most 50 μm, and the BET specific surface area is at least 20 m2 / g and at most 50 m2 / g, is preferred.

Provided is a plasma processing method capable of removing a Ti-series deposit from the surface of a processing chamber of a plasma processing apparatus without production of a foreign matter such as a boron oxide. The plasma processing method includes carbon-series deposition discharge which succeeds product etching during which a sample containing a Ti material is processed, and during which a carbon-series film is deposited on a Ti reaction by-product deposited on the surface of the processing chamber, and chlorine-series discharge which succeeds the carbon-series deposition discharge and during which the carbon-series film and Ti that are deposited on the surface of the processing chamber are removed.

A method for synthesizing florfenicol comprises the steps of cyclization, selective reduction, fluorination, ring opening, deprotection, acylation, esterification with sulfonic acids, epimerization and hydrolysis. Florfenicol is prepared by successively purifying, selectively reducing, and epimerizing chiral (R)-amino ketones. This improves atom economy, reduces waste water pollution and accordingly reduces costs for treating waste water and pollution to the environment, thus lowering costs and simplifying the process. Furthermore, triethylamine hydrofluoride is used as a fluorinating reagent, resulting in improved safety, because of the use of liquid reaction conditions as compared to gaseous reaction conditions, and reduced corrosion to the reaction equipment.

The present invention relates to a spinelle type nickel aluminate base metal ceramic indifferent electrode for aluminium electrolysis. Said indifferent electrode component includes nickel aluminte base metal ceramics or nickel aluminate and nickel ferrite composite metal ceramics and copper-nickel series multicomponent alloy powder, and the above-mentioned materials and undergone the process of cold-press sintering or hot pressing method so as to obtain the indifferent anode with a certain size and thickness. The purity of said aluminium product is 99.6% Al.

The invention relates to a general efficient paint remover and its preparing method. The paint remover is prepared by mixing methylene chloride, methanol, formic acid, resordinol, paraffin, surfactant and corrosion inhibitor according to rated proportion and making then react under a certain condition. It has fast depainting speed, good depainting effect, wide application range, and little corrosion to keelson, and non-combustible and hypotoxicity.

The invention discloses an ultrahigh-temperature-resistant low-viscosity low-corrosion emulsifier and an emulsified acid system containing the same. The ultrahigh-temperature-resistant low-viscosity low-corrosion emulsifier comprises at least one viscoelastic surfactant; the viscoelastic surfactant is prepared from fatty acid acyl propyl dimethyl tertiary amine and a halogenated compound through quaternization reaction; or the viscoelastic surfactant is prepared from a long-chain halogenated hydrocarbon and a tertiary amine compound through quaternization reaction; or the viscoelastic surfactant is prepared by reacting a fatty acid acyl propyl dimethyl tertiary amine with a linking group generated by reaction of epoxy chloropropane and alkylamine compounds. The preparation method is simple, and the prepared emulsified acid is an acid-in-oil emulsion, has very excellent temperature resistance, stability, low viscosity, low friction resistance and slight corrosion to metal pipes, can bestabilized for not less than 7 hours at 160 DEG C, and can effectively reduce the rate of acid-rock reaction in a high-temperature deep well and reduce the corrosion rate of acid liquor to the pipes.

The invention discloses deplating liquid and a deplating method for deplating a copper base palladium-nickel alloy plating layer. The deplating liquid is obtained by homogenizing 45-55 parts of bromide, 6-10 parts of oxidant, 0.3-0.6 part of corrosion inhibitor-benzotriazole and 40-60 parts of water; the pH value of the deplating liquid is less than 4; the bromide is one or a composition of two of hydrobromic acid and sodium bromide; and the oxidant is two or compositions of more than two of hydrogen peroxide water solution, manganese dioxide, sodium bromate and high sodium bromate. A bromination method is adopted to remove the palladium-nickel alloy plating layer on a copper matrix; the plating layer is deplated thoroughly and efficiently; the process is simple; the corrosion of the copper matrix is slight; the separation of the copper matrix and the palladium-nickel alloy plating layer in the plating part is realized, that is, the deplating of the copper base palladium-nickel alloy plating layer is realized; and after the deplating liquid is saturated, patalldium and nickel can be recovered therefrom.

A movable heating apparatus for regenerating the used desulfurizing activated carbon is composed of a feeding segment consisting feeding cabin and gas locking valve, a transition segment with regenerating gas pumping-in inlet, a heating-regenerating segment with heat exchanger, a stage-one cooling segment, a stage-two cooling segment with heat exchanger, and an gas-in and material-discharging segment. Its regenerating process is also disclosed.

The invention discloses a method for deplating a nickel-phosphorus coating on the workpiece surface, characterized by preparing a deplating liquid and putting the workpiece in the deplating liquid to deplate. According to the invention, the method guarantees that after deplating nickel-phosphorus coatings in various proportions on copper alloy or aluminium alloy base materials, the surface of the base material is slightly etched and the fineness is not influenced, and the method is suitable for all copper alloy and aluminium alloy and solves the problems of low quality and low efficiency of deplating high-phosphorus nickel-phosphorus coatings on copper alloy or aluminium alloy, and corrosion to the base materials in the prior art; in addition, compared with common nickel-phosphorus coatings, the method disclosed herein can achieve a total amount of deplated coatings which is more than 10 times that obtained by traditional method, thus the efficiency is greatly raised.

The invention discloses a novel silicate electrolyte storage battery. The novel silicate electrolyte storage battery comprises a cathode, an anode, an isolation layer and electrolyte; and the electrolyte consists of sulfuric acid, ammonium phosphate, silicon dioxide, ammonium persulfate, sodium sulfate, potassium sulfate, polyacrylamide, a dispersing agent, a stabilizing agent and a catalyst, and the balance of deionized water, wherein the catalyst is one of basic salt, silane and silicone oil. The storage battery is environmentally-friendly, and has high performance and wide application prospect.

A method for improving the quality and output of sheet-shaped barium titanate templates provided by the present invention comprises the following steps: step 1, weighing Bi according to the molar ratio of 1:(3-15) 4 Ti 3 o 12 Powder and BaCO 3 The powders are mixed to prepare a mixture containing barium titanate products; step 2, the obtained mixture containing barium titanate products is sequentially washed with deionized water, dilute hydrochloric acid, concentrated ammonium salt, and deionized water until the obtained No Ba in the product 2+ ; Step 3, drying the product obtained in step 2, then adding organic reagents to carry out stirring and cleaning to remove bismuth salts, then drying to finally obtain pure flaky BaTiO 3 powder; the method of the present invention can not only ensure that the flaky barium titanate powder is not subject to corrosion and maintain the original shape, but also can effectively increase the output of the barium titanate powder.

A process for preparing an organic hydroperoxide, which process comprises:(a) oxidizing an organic compound to obtain an organic reaction product containing organic hydroperoxide;(b) mixing at least part of the organic reaction product of step (a) with a basic aqueous solution to obtain a mixture of basic aqueous solution and the organic reaction product;(c) separating the mixture of step (b) to obtain a separated organic phase containing organic hydroperoxide, and a separated aqueous phase;(d) mixing at least part of the separated organic phase of step (c) with water to obtain a mixture of an aqueous phase and the organic phase; and(e) separating the mixture of step (d) to obtain a separated organic phase containing organic hydroperoxide, and a separated aqueous phase; in which process the separation to a separated organic phase and a separated aqueous phase in step(e) is carried out with the help of a coalescer containing glass fibers.