107 results about "Aluminium atom" patented technology

A spraytex desulfurization sorbent contains molecular sieve and metal oxide having the function of absorbing sulfur; wherein, the mol ratio between silicon atom and aluminium atom of the molecular sieve is 50-750, and the weight ratio between the molecular sieve and metal oxide having the function of absorbing sulfur is 45-98:2-55. The desulfurization sorbent has large capacity, and can be used for absorbing and decarbolizing spraytex, thus having high desulfurization efficiency and high yield of the spraytex.

Provided is a toner in which faulty transfer under an extremely-low-temperature, low-humidity environment hardly occurs, including toner particles and a zeolite as an external additive, in which a ratio of the alminium atoms to a total of the silicon atoms and the aluminium atoms contained in the zeolite is 0.2 to 24.0%.

A transition-metal-containing silicoaluminophosphate zeolite having excellent high-temperature hydrothermal durability is easily and efficiently produced. A method for producing a transition-metal-containing zeolite that contains a silicon atom, a phosphorus atom, and an aluminum atom in at least its framework structure includes hydrothermal synthesis using an aqueous gel containing a silicon atom raw material, an aluminum atom raw material, a phosphorus atom raw material, a transition metal raw material, and a polyamine (other than diamines). A transition-metal-containing silicoaluminophosphate zeolite produced by hydrothermal synthesis using a zeolite raw material and the aqueous gel containing the transition metal raw material and the polyamine has excellent high-temperature hydrothermal durability and high catalytic activity.

The invention provides a heat-resistant wrought magnesium alloy containing calcium and neodymium and a preparation method thereof. The heat-resistant wrought magnesium alloy comprises, by mass percentage, 2.5-3.5 wt.% of Al, 0.30-0.60 wt.% of Ca, 0.5-2.0 wt.% of Nd and the balance Mg and unavoidable impurities, wherein the total number of the impurities is smaller than 0.06 wt.%. The preparation method is realized by adding the alkaline-earth element calcium and the rare-earth element neodymium in a compounding mode in combination with a hot extrusion process. The certain amount of calcium is added in the Mg-Al system magnesium alloy and can be combined with aluminum atoms to form a high-melting-point Al2Ca phase; the rare-earth neodymium is added, so that the grain can be effective refined; meanwhile, the neodymium and the aluminum in the alloy can form a high-temperature stable rare earth phase, and the strength of the material is improved. The alloy subjected to hot extrusion has a compact structure and a fine grain size, thereby having high strength at high temperature and meanwhile guaranteeing certain plasticity (higher than 39%).

The present invention describes a hydrocracking and / or hydrotreatment process using a catalyst comprising an active phase containing at least one hydrogenating / dehydrogenating component selected from the group VIB elements and the non-precious elements of group VIII of the periodic table, used alone or in a mixture, and a support comprising at least one dealuminated zeolite Y having an overall initial atomic ratio of silicon to aluminium between 2.5 and 20, an initial weight fraction of extra-lattice aluminium atoms greater than 10%, relative to the total weight of aluminium present in the zeolite, an initial mesopore volume measured by nitrogen porosimetry greater than 0.07 ml·g−1 and an initial crystal lattice parameter a0 between 24.38 Å and 24.30 Å, said zeolite being modified by a) a stage of basic treatment comprising mixing said dealuminated zeolite Y with a basic aqueous solution, and at least one stage c) of thermal treatment.

The invention provides a polyester, preparation method thereof and polyester polymeric catalyst, wherein the polyester is prepared by polymeric catalysts using metal components expert for antimony and germanium as main metal components of the catalysts, capable of improving the block of filters during the formation, and selected from the group consisting of at least one of alkaline metals and compounds thereof and alkaline-earth metals and compounds thereof and the group consisting of at least one of aluminium and compounds thereof with the amounts making them meet with the followings formulas (1) and (2) that M is less than 0.05, and (2) M / Al is less than 20, where M represents the mol% in total of the alkaline metal atoms and alkaline-earth metal atoms in the polyester corresponding to the acid components, and Al represents the mol% of the aluminium atom in the polyester corresponding to the acid components. The polyester can be used for fibres, films, hollow moulds and the like.

An aluminum sputtering process including RF biasing the wafer and a two-step aluminum fill process and apparatus used therefor to fill aluminum into a narrow via hole by sputtering under two distinctly different conditions, preferably in two different plasma sputter reactors. The first step includes sputtering a high fraction of ionized aluminum atoms onto a relatively cold wafer, e.g., held at less than 150° C., and relatively highly biased to attract aluminum atoms into the narrow holes and etch overhangs. The second step includes more neutral sputtering onto a relatively warm wafer, e.g. held at greater than 250° C., and substantially unbiased to provide a more isotropic and uniform aluminum flux. The magnetron scanned about the back of the aluminum target may be relatively small and unbalanced in the first step and relatively large and balanced in the second.

The invention relates to a method for preparing a molecular sieve by using Hangjin 2# soil as a raw material and a prepared molecular sieve. The method is used for preparing the molecular sieve by taking the Hangjin 2# soil as the raw material and taking sodium hydroxide as an activating agent through an alkali melting method. The method comprises the following specific steps of: (1), after mixing the Hangjin 2# soil with sodium hydroxide according to a certain proportion, roasting and activating; (2), after grinding a roasted product, mixing the roasted product with water or directly mixing the roasted product with water to prepare a mixed solution, and adjusting the mol ratio of silicon atoms to aluminium atoms of the mixed solution to 2.5-6.0 by adding or not adding aluminium sulphate; and (3), crystallizing the mixed solution prepared in the step (2), wherein the mol ratio of silicon atoms to aluminium atoms of the mixed solution meets with requirements. According to the invention, the method is simple and feasible; the material for preparing the molecular sieve comes from a variety of sources; the preparation cost of the molecular sieve is low; the purity of the molecular sieve (P type zeolite molecular sieve) disclosed by the invention is above 90%; and the method can be widely applied in the fields, such as environment protection, metallurgy, chemical industry, electronics, petrochemical engineering, natural gas and the like, in particular water treatment of denitrification and dephosphorization.

The object is to provide an exhaust gas reduction catalyst that exhibit high nitrogen oxide reduction performance, and to provide a simple and efficient method for producing the catalyst, in which the amount of the waste liquid is reduced, further, an object of the invention is to provide a zeolite-containing catalyst for reducing nitrogen oxides, which does not use an expensive noble metal or the like and which has high nitrogen oxide reduction performance. The present invention relates to a catalyst for reducing nitrogen oxides, which comprises: zeolite at least containing an aluminium atom and a phosphorus atom in the framework thereof; and a metal supported on the zeolite, wherein a coefficient of variation of intensity of the metal is at least 20%, when performing an elemental mapping of the metal in the catalyst with an electron probe microanalyzer, and, a catalyst for reducing nitrogen oxides, which comprises the zeolite containing at least a silicon atom, a phosphorus atom and an aluminium atom, and having an adsorption retention rate of at least 80% in a water vapor cyclic adsorption / desorption test at 90° C.

The invention discloses a two-dimensional ultra-thin SAPO-34 molecular sieve sheeting material. The thickness is 1-25 nanometers, and a crystal structure is a SAPO-34 molecular sieve, wherein a silicon / aluminium atom ratio is 0.05-0.3. The two-dimensional ultra-thin SAPO-34 molecular sieve sheeting material is characterized in that cheap easy-to-get aluminium phosphate, a silicon source and organic amine are used as reactants, through a chemical method, a layered precursor is exfoliated, and then gaseous phase crystallization is conducted to prepare the two-dimensional ultra-thin SAPO-34 molecular sieve sheeting material. The two-dimensional ultra-thin SAPO-34 molecular sieve sheeting material has a an enormous surface area, the silicon content is adjustable in a certain range, and a method is pervasive; the material has multiple advantages and can be subjected to industrial large-scale production; the method is little in template usage, suitable for industrial large-scale production and low in cost, and basically, no environmental pollution is generated. The invention discloses the preparation method of the two-dimensional ultra-thin SAPO-34 molecular sieve sheeting material.

A spraytex desulfurization sorbent contains molecular sieve and metal oxide having the function of absorbing sulfur; wherein, the mol ratio between silicon atom and aluminium atom of the molecular sieve is 50-750, and the weight ratio between the molecular sieve and metal oxide having the function of absorbing sulfur is 45-98:2-55. The desulfurization sorbent has large capacity, and can be used for absorbing and decarbolizing spraytex, thus having high desulfurization efficiency and high yield of the spraytex.