9 results about "Ruthenium" patented technology

The invention relates to a method for measuring formaldehyde in aqueous solution by utilizing electrochemical luminescence of terpyridyl ruthenium. The aqueous solution sample containing the formaldehyde is taken to be mixed with terpyridyl ruthenium solution with the pH value of 8.6 and the concentration of 1mmol/L, wherein, the concentration of the formaldehyde aqueous solution is 0.9-300mg/L; after that, cyclic voltammetry is carried out within the range of 0.2-1.5v, and the speed is 0.1v/s; a working electrode of electrochemical luminescence measurement is a glassy carbon electrode, and then linear relation exists within a certain range according to the electrochemical illumination intensity and the concentration of the formaldehyde; quantitative analysis is carried out on the formaldehyde in the aqueous solution. The method can be used for measuring the content of the formaldehyde within the concentration range of 0.9-300mg/L. The method for measuring formaldehyde by utilizing electrochemical luminescence has the advantages of simple operation, rapid measuring speed, lower price of an analytical instrument and the like, and can be expected to be used for daily analysis.

The invention discloses a high water-solubility ruthenium metal complex singlet oxygen fluorescent probe, a preparation method thereof, and an application thereof. According to the invention, a transition metal ruthenium is adopted as a central ion of the ruthenium complex; and anthracene nucleus derivatives with sodium (or potassium) sulfonate groups are adopted as ligands. The ruthenium complex has properties of a singlet oxygen fluorescent probe and a better water-solubility than existing anthracene nucleus derivative ligand ruthenium complexes. The ruthenium complex is suitable for quantitative or qualitative determinations of <1>O2 in neutral or basic system solutions.

A member 20 for semiconductor manufacturing equipment includes a base portion 22 and a ceramic member 30 formed on the base portion 22. The ceramic member 30 of the present invention includes a ceramic base 32 containing at least one of magnesium oxide, a magnesium oxide solid solution in which a predetermined component is dissolved in magnesium oxide, and zirconium oxide; and an electrode 34 which is arranged on part of the ceramic base 32 and which contains a ruthenium-aluminum alloy as an electrode component. The ceramic member 30 is a plate-like member and has a structure in which the electrode 34 is embedded therein. The electrode 34 is connected to a feeding member 26 inserted from the underside of the ceramic member 30. Electric power is supplied from the feeding member 26.

The invention discloses an activated carbon-supported ruthenium-based ammonia synthetic catalyst and a preparation method thereof. The preparation method comprises the steps of with potassium ruthenate K2RuO4 H2O as a metallic ruthenium precursor, liquid ammonia and acetic acid as a stabilizer of ruthenium impregnation liquid, alkaline metal and alkaline-earth salts or bases as aids, and activatedcarbon as a supporter, performing impregnating to obtain the activated carbon-supported ruthenium-based ammonia synthetic catalyst. The activated carbon-supported ruthenium-based ammonia synthetic catalyst prepared herein is free of chlorine ions; active ingredients and the aids are distributed evenly on the catalyst; the prepared catalyst has stable performance, high activity, and good safety ofuse and is suitable for industrial production and application.

The invention discloses a method for electrochemical pretreatment on methyl sulcotrione pesticide wastewater. The method comprises the following steps: preparing a titanium-based tin antimony ruthenium cerium oxide electrode by using a coating-thermolysis method, feeding high-concentration methyl sulcotrione wastewater through an electrolytic cell which takes the titanium-based tin antimony ruthenium cerium oxide electrode as an anode, and continuously treating the wastewater for a certain time under certain current density. The titanium-based tin antimony ruthenium cerium oxide electrode is very good in stability, high in oxygen evolution potential and high in catalysis and oxidation capabilities. According to the method, the titanium-based tin antimony ruthenium cerium oxide electrode is adopted to pretreat high-concentration, high-salt and hard-biochemical wastewater generated in the production process of methyl sulcotrione, and the result shows that under conditions of certain pH values, current density and treatment time, the COD removal rate of the methyl sulcotrione can be greater than 50%, the BOD/COD is increased to be greater than 0.3 from less than 0.1, and the biodegradability is greatly improved. The electrochemical oxidation of the titanium-based tin antimony ruthenium cerium oxide electrode is very applicable to pretreatment on biochemical degradation of the high-salt high-concentration wastewater generated in the production of methyl sulcotrione.

The invention discloses a monometal-loaded ruthenium charcoal catalyst, a preparation method therefor and an application of the monometal-loaded ruthenium charcoal catalyst. The catalyst is prepared from a support, i.e., activated charcoal and an active ingredient, i.e., ruthenium nanoparticles, wherein the ruthenium nanoparticles have a particle size of 2nm to 5nm, and the loaded amount of ruthenium is 5wt% to 15wt%. According to the catalyst, the activated charcoal serves as the support, and the support is cheap and readily available. The prepared loaded ruthenium monometal catalyst has theadvantages of simple preparation process, high catalytic activity, good stability and the like and can achieve hydrogenation of trimellitic anhydride in a water phase at a relatively low temperature of 100 DEG C to 150 DEG C under a relatively low pressure of 4.0 MPa H2 to complete the preparation of cyclohexane trimethyl anhydride; and the cost is low, the conversion ratio and selectivity are high, the process is simple, the solvent employed is water, and thus, the method is in line with rules of green chemistry.

Fire ion detector (ZVD) is made of natural quartz, rare earth, yttrium, iridium, ruthenium, calcium, zirconium, iridium, titanium, nickel, palladium, platinum, manganese, etc. detectors of different specifications. A is the tube wall, A1, A2, G is the electrode coating, A3 is the electronic chamber particle and electronic area; B is the temperature sensor; C is the quartz body; D is the air duct; E is the insulation layer; F is the heating resistance layer ; G electron oscillation area; G1 jet port electron emission area; LI, L2 are heating power supply terminals; M is constant temperature electronic block; H1, H3 are signal output terminals; H2 polarized pole; J is air inlet; Composition, stable work and high precision. It can detect trace amounts of hydrogen and organic gases, etc., and the detection limit can be as low as 0.1ppb. It is suitable for the analysis of environmental protection, gas, chemical, nuclear energy and other industries. The detector does not need combustion gas and combustion-supporting gas, and the carrier gas can be nitrogen or inert gas.

The invention discloses a vacuum pump and a preparation method, belonging to the technical field of metal materials. The vacuum pump is made from the following raw materials by weight percent: 0.2-0.4% of Rh, 0.2-0.4% of Ru, 0.5-1.5% of Cu, 0.5-1.5% of Ni, 0.4-0.6% of Ba, 1-3% of Mn, and the balance of Al and impurities. In the raw materials, manganese can greatly reduce the content of impurity element sulphur in alloy and refine grains, and barium can quickly form a barium oxide with impurity oxygen in the alloy. Ruthenium and rhodium can form a ruthenium-rhodium binary alloy system in the alloy, so that the strength and the hardness of the alloy are increased by fold. Meanwhile, in combination with pouring of cupronickel on the surface of the alloy, a multi-element alloy phase is formedon the surface of the alloy, and therefore, the mechanical performance, processing performance and corrosion resistance of the aluminum alloy are greatly improved.

The invention discloses an environment-friendly electroplating solution which is composed of 5g/L of metal ruthenium, 2g/L of nickel, 3g/L of manganese and 10g/L of ammonium sulfate. The electroplating method of the environment-friendly electroplating liquid comprises the following steps: step 1, selecting raw materials and metering tools; 2, preparing a solution; thirdly, the electroplating substrate is put into the electroplating liquid to be heated; fourthly, the heated electroplating liquid is treated; and fifthly, the base body is cleaned and blow-dried. The plating layer is bright and flat, the binding force between the copper plating layer and the base material is good, and the plating layer is compact, uniform, wear-resistant, corrosion-resistant, good in thermal shock resistance and good in high-temperature heat conduction and insulation performance.