6 results about "Aluminum Acetate" patented technology

The invention relates to Al2O3 / C powder as well as a preparation method and application thereof, and belongs to the field of ceramic powder preparation. The invention relates to a preparation method of Al2O3 / C powder, which comprises the following steps: by taking aluminum acetate as a raw material, acrylamide as an organic monomer, N, N '-methylenebisacrylamide as a cross-linking agent and ammonium persulfate as an initiator, forming polymer gel with a three-dimensional network structure through a sol-gel method, and drying to obtain dry gel powder; and pyrolyzing the dry gel powder in nitrogen to obtain Al2O3 / C powder with a porous structure characteristic. According to the invention, acrylamide is utilized to form gel with a three-dimensional network structure, Al < 3 + > is trapped in pores of the gel structure, so that an aluminum source and a carbon source are uniformly distributed on a molecular level, and growth of Al2O3 particles is effectively inhibited by utilizing an isolation effect of C and combining a rapid heating process, so that the diffusion distance of a substance for forming AlN is greatly shortened, and the preparation process is simplified. According to the method, rapid formation of AlN is promoted, the reaction time is effectively shortened, the efficiency is improved, and the obtained pure-phase AlN powder is small in particle size.

The invention relates to a Pd / F-Al2O3 catalyst with strong metal-carrier interaction and a preparation method and application thereof in the technical field of selective catalytic reduction, a catalytic material comprises an active component and a carrier material, the active component is Pd, the carrier material is F-Al2O3 rich in F center and AlV center, and the mass fraction of the active component is 0.5 wt.%. A carrier F-Al2O3 is prepared through high-temperature treatment of basic aluminum acetate in an argon atmosphere, Pd active components are loaded on the surface of the carrier by adopting an initial wet impregnation method, and the efficient catalytic material for nitrous oxide-ammonia gas selective catalytic reduction reaction is finally prepared after centrifugation, drying and calcination in an air atmosphere. The prepared catalytic material has the advantages of being high in metal-carrier interaction, good in active component dispersity and simple in preparation process, the T90 temperature required by the catalytic efficiency reaching 90% is reduced by 30% compared with that of a traditional Pd / Al2O3 catalyst, the wide industrial application prospect is achieved, and upgrading and optimization of the nitrogen oxide pollution control technology are promoted.

An asbestos free friction material composition and associated brake pad for vehicles including inorganic and / or organic and / or metallic fibers, at least a binder, at least a friction modifier or lubricant, at least a filler or abrasive and at least a soluble salt of barium and / or calcium and / or aluminum and / or silver with percentage between 0.5-10% by weight. Among them barium carbonate, calcium hydroxide, aluminum triacetate and silver acetate are preferably.

The utility model discloses a solar cell string and a solar cell module, the solar cell string comprises a plurality of back contact solar cells and linear conductive interconnecting pieces for conductively connecting the adjacent back contact solar cells in series, the back surface of each back contact solar cell is provided with a first electrode and a second electrode, and one end, close to the first electrode, of the second electrode is covered with an insulating layer. The end, close to the second electrode, of the first electrode is covered with an insulating layer, the linear conductive interconnection piece comprises an aluminum core, the first electrode is conductively connected with the linear conductive interconnection piece through a conductive connecting layer, and the second electrode is conductively connected with the linear conductive interconnection piece through a conductive connecting layer. The production cost is reduced due to the metal aluminum, and a layer of aluminum oxide film can be formed on the surface of the linear conductive interconnection piece made of the aluminum alloy in a low-oxygen environment. When the aluminum oxide reacts with the hydrolysis product acetic acid in the packaging material, aluminum acetate which is insoluble in water and can absorb water can be generated, so that the reliability of the product is improved.

Method for manufacturing elements for electrical working machines, which are formed with superimposed layers (1) of iron or an iron alloy with soft magnetic properties and in which an electrically insulating layer (2) is arranged between each of the layers (2) formed with iron or with the iron alloy, wherein the layers (1) of iron or the iron alloy each with a suspension formed with iron or with a powder of the iron alloy and an organic binder are formed by screen printing in a predetermined geometry with a predetermined first layer thickness and the electrically insulating layers (2) formed between the layers (1) of iron or the iron alloy formed by screen printing, which are formed with a powder and an organic binder, are formed by screen printing in the specified geometry with a specified second layer thickness, wherein the powder is a hydroxide or acetate selected from magnesium hydroxide, aluminum hydroxide, zirconium hydroxide, magnesium acetate, aluminum acetate and zirconium acetate or a carbonate selected from magnesium carbonate and zirconium carbonate and Following screen printing, the resulting layer stack undergoes a thermal treatment, during which In a first stage, debinding takes place in the temperature range between 100 °C and 800 °C, whereby the respective hydroxide, acetate and / or carbonate is decomposed in the temperature range between 100 °C and 300 °C, and a chemical reaction is carried out in which the respective hydroxide, acetate and / or carbonate is formed into the respective metal oxide with a fine particle size distribution of < 1 µm, and following the first stage, a second stage of thermal treatment is carried out, in which in a reducing atmosphere at a temperature in the range of 1200°C to 1350°C, sintering of the iron or the respective iron alloy is carried out to form layers (1) with corresponding soft magnetic properties and porous electrically insulating layers (2) are obtained.

Provided is a polishing method comprising a polishing step for using a slurry to polish a resin part of a member to be polished, which has the resin part containing a resin material, wherein: the slurry contains abrasive grains having silicon oxide particles and an aluminum component present on the surface of the silicon oxide particles; and the aluminum component includes at least one compound selected from the group consisting of aluminum acetate, aluminum chloride, and derivatives thereof. Also provided is a slurry for polishing a resin part of a member to be polished, which has the resin part containing a resin material, the slurry containing abrasive grains having silicon oxide particles and an aluminum component present on the surface of the silicon oxide particles, wherein the aluminum component includes at least one compound selected from the group consisting of aluminum acetate, aluminum chloride, and derivatives thereof.