6 results about "Potassium oxalate" patented technology

Desensitizing oral care composition useful for treating dentinal hypersensitivity, comprising potassium oxalate and methods of use thereof. Delivery systems including a strip of material and such oral care compositions for the treatment of dentinal hypersensitivity and methods of use thereof.

The application belongs to the technical field of noble metal separation, and relates to a temperature control type hydrophobic extractant for separating gold (III) in a homogeneous phase and a preparation and extraction method thereof. The extractant is a piperidine ethyl acetate type ionic liquid. The ionic liquid has excellent high selectivity, only has high extraction efficiency on gold (III) in a multi-metal mixed solution, and the extraction efficiency can be as high as 98% and above. The ionic liquid extracted into an organic phase is back-extracted by potassium oxalate to obtain high-purity gold single element, so that the separation and collection of gold are realized. After back-extraction, the ionic liquid can have good cycle efficiency, so that efficient cyclic utilization of the ionic liquid is realized.

The invention relates to a method for producing [ 18 F]SiTATE, encompassing the following steps (a) Providing an eluent solution prepared by dissolving 4,7,13,16,21,24-hexaoxa-1,10-diazabicyclo[8.8.8]hexacosane and potassium oxalate in a solvent; (b) Winning [ 18 [F]Fluoride anions using the eluent solution to obtain a solution, [ 18 [F]Fluoride anions contains; (c) Removal of the solvent leaving a residue which[ 18 [F] Fluoride anions contain; and (d) Converting the residue with [ 19 F]SiTATE in an organic solvent to obtain [ 18 F]SiTATE.

The application discloses a welding rod for 1000MPa high-strength steel and a preparation method thereof. The welding rod comprises a coating and a welding core, and the coating is wrapped on the outside of the welding core. The coating powder comprises the following components in parts by weight: 30-35 parts of fluorite, 20-30 parts of dolomite, 5-8 parts of strontium carbonate, 2-5 parts of sodium titanium silicate, 5-10 parts of potassium oxalate, 5-10 parts of atomized ferrosilicon, 2-5 parts of titanium powder, 0.5-1.0 parts of lanthanum cerium fluoride, 1-5 parts of lithium carbonate, 1-2 parts of sodium carboxymethyl starch, 0.5-1.5 parts of copper powder and 8-15 parts of iron powder. The welding rod has excellent all-position welding process performance, the arc is stable during welding, fine droplet transition is presented, the molten slag has moderate fluidity, the welding spatter is small, and the weld formation is fine and beautiful.

This invention relates to the field of dichloromethane waste gas treatment technology, specifically disclosing a molten salt-assisted preparation method for ultra-microporous activated carbon used to remove dichloromethane. The method of this invention includes the following steps: urea, potassium oxalate, chloride salt and coconut shell carbonized material are mixed and ground in different proportions, and then activated at 800℃ for 60 min to obtain a series of ultra-microporous activated carbons. The preparation method provided by this invention can control the pore structure of activated carbon to obtain adsorption materials with excellent dichloromethane purification performance. The material synthesis is simple, the cost is low, and it has the conditions for large-scale production.

The invention relates to a sodium-iron-copper-containing activated carbon adsorbent for adsorbing hydrogen sulfide and a preparation method thereof. The adsorbent is prepared from powdered carbon, iron salt, copper salt, sodium salt, potassium oxalate and ammonium ferric citrate through a specific process. The preparation method comprises the following steps: dissolving the raw materials in water to obtain a modified solution; kneading with carbon powder, and performing extrusion molding; and carrying out heat preservation and drying, and activating at 450-650 DEG C in an atmosphere in which the volume ratio of nitrogen to water vapor is (5-10): 1 and the temperature of the water vapor is 150-180 DEG C, so as to obtain the catalyst. The adsorbent adopts sodium, iron and copper ternary synergistic modification, and an additive and an activation process are optimized, so that the adsorbent shows high sulfur capacity (up to 9.2%) and excellent cycle stability (the capacity fading rate after 50 times of regeneration is less than 5%) in a simulated industrial atmosphere with the H2S content of 1-500ppm. After adsorption saturation, regeneration can be realized only by treatment at 120-180 DEG C in a hydrogen sulfide-free atmosphere, no waste liquid is generated in the process, and the regeneration energy consumption is low. The adsorbent is especially suitable for removal and resource recycling of low-concentration hydrogen sulfide such as blast furnace gas and chemical waste gas.