1793 results about "Molybdic acid" patented technology

There is provided an aqueous dispersion for CMP with an excellent balance between chemical etching and mechanical polishing performance. The aqueous dispersion for CMP of the invention is characterized by comprising an abrasive, water and a heteropolyacid. Another aqueous dispersion for CMP according to the invention is characterized by comprising an abrasive, water, a heteropolyacid and an organic acid. Yet another aqueous dispersion for CMP according to the invention is characterized by comprising colloidal silica with a primary particle size of 5-100 nm, water and a heteropolyacid. Preferred for the heteropolyacid is at least one type selected from among silicomolybdic acid, phosphorotungstic acid, silicotungstic acid, phosphoromolybdic acid and silicotungstomolybdic acid. Preferred for the organic acid is at least one selected from among oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, maleic acid, fumaric acid, phthalic acid, malic acid, tartaric acid and citric acid.

The present invention provides methods of synthesizing molybdenum disulfide (MoS2) and carbon-containing molybdenum disulfide (MoS2-xCx) catalysts that exhibit improved catalytic activity for hydrotreating reactions involving hydrodesulfurization, hydrodenitrogenation, and hydrogenation. The present invention also concerns the resulting catalysts. Furthermore, the invention concerns the promotion of these catalysts with Co, Ni, Fe, and / or Ru sulfides to create catalysts with greater activity, for hydrotreating reactions, than conventional catalysts such as cobalt molybdate on alumina support.

The invention discloses a multifunctional concrete structure endurance protective agent as well as the preparation and application method thereof. The protective agent provided by the invention contains the following ingredients of: an organic / inorganic composite fluorosilicone-acrylate copolymer, lithium silicate, sodium silicate, lithium molybdate, sodium tetraborate, sal glauberi, 1,2-aminoazophenylene, nanometer titanium dioxide, anhydrous ethanol and water. The protective agent can penetrate inside concrete, wherein a densification ingredient can minimize internal holes and cracks to raise the compactness of concrete, and a rust-resistant ingredient can penetrate into concrete and be adsorbed on the surface of steel bar so as to passivate and protect the steel bar; the low-surface energy silicon fluoride ingredient can be solidified to form a cured film on the surface of concrete so as to endow the protective agent with the hydrophobic performance; a nanometer ingredient can endow the cured film layer with properties of resisting ultraviolet and ageing and improving the organic polymer performance as well as the self-cleaning performance. In addition, hydroxy generated from the hydrolysis of siloxane group can perform a condensation reaction with hydroxy on the surface of concrete to produce chemical bond, so as to raise the anchoring strength between the film and concrete and improve the interface combination. The protective agent provided by the invention can be widely applied in various concrete structure engineering protections to raise the service life of concrete.

The invention discloses a method for preparing a three-dimensional flower-shaped graphene / molybdenum disulfide composite loaded fibrous counter electrode. The method for preparing the three-dimensional flower-shaped graphene / molybdenum disulfide composite loaded fibrous counter electrode uses a one-step hydrothermal reduction method, to be specific, adding molybdic acid or the water solution of molybdenum oxide, ammonium thiocyanate and graphene oxide in a hydrothermal reactor, vertically immersing carbon fiber in the reaction liquid, carrying out hydrothermal reduction reaction for 12 to 36 hours under 160 to 200 degrees centigrade, taking out the carbon fiber after ending reacting, using deionized water and absolute ethyl alcohol to wash, and drying. The method for preparing the three-dimensional flower-shaped graphene / molybdenum disulfide composite loaded fibrous counter electrode has advantages of simple technique, moderate reaction condition, high yield, good reproducibility, easiness in scale production and the like; the photoelectric conversion rate of a dye-sensitized solar cell composed of the prepared fibrous counter electrode is obviously higher than that of a dye-sensitized solar cell composed of an MoS2 or platinum loaded fibrous counter electrode, and the method for preparing the three-dimensional flower-shaped graphene / molybdenum disulfide composite loaded fibrous counter electrode is important for promoting the commercial application of the dye-sensitized solar cell.

The invention belongs to the technical field of electronic materials, particularly relates to a surface treatment process of a very low profile electrolytic copper foil, in particular to an additive used during the surface treatment of the very low profile electrolytic copper foil. The additive is composed of three components: titanous sulfate, titanium sulfate and molybdate, wherein the contents of the three components in the electroplate liquid are respectively 50-150mg / L, 150-250mg / L and 70-118mg / L (molybdate radical). The additive is used to be added into a microcrystalline coarsening slot; and the three components are used cooperatively, so that the treated copper foil coarse layer crystalline grains are small and dense, achieving a microcrystalline effect. In the invention, the addition amount of each additive and proper electroplating process conditions such as content of cuprate, temperature and current density are found out in the coarsening slot for the surface treatment, so that the treated 18-micron very-low profile electrolytic copper foil can meet the following technical indicators: the anti-stripping strength is equal to or greater than 1.0kg / cm and the value of surface roughness Rz is smaller than or equal to 5.1 microns.

The invention belongs to the field of preparing inorganic nonmetal materials, and particularly relates to a preparation method of cobalt molybdate microcrystals. The preparation method comprises the steps of by taking soluble cobalt salt and molybdate as active ingredients, mixing according to certain mole ratio, stirring and reacting at the temperature of 20-50 DEG C for 5-30 minutes, then performing hydrothermal reaction at the temperature of 100-300 DEG C for 6-48 hours; after the hydrothermal reaction is finished, naturally cooling to room temperature, filtering, washing and drying to obtain cobalt molybdate microcrystals. The preparation method is simple and convenient and easy in technology, the cobalt molybdate microcrystals are high in purity, low in impurity content, good in dispersity, low in cost, the diameters of the cobalt molybdate microcrystals range from 1mu m to 5mu m, and the lengths of the cobalt molybdate microcrystals range from 50mum to 100mum. The prepared cobalt molybdate microcrystals are unique in microstructure, regular in sizes, and high in crystallization degree, and can be widely applied in the electronic and electoral, mechanical, chemical, photoelectrical, energy storage and converting, photocatalytic and other fields.