72 results about "Platinum chloride" patented technology

The invention relates to a preparation method of a platinum complex, namely tetramine platinum chloride, which belongs to the field of pharmacochemistry. The preparation method comprises the following steps: carrying out a reaction on a Magnus salt and concentrated ammonia solution under the condition of heating reflux till the green Magnus salt disappears completely so as go generate pale yellow or colorless clear liquid, and concentrating to get a solid of the tetramine platinum chloride. According to the preparation method of the tetramine platinum chloride, the higher conversation rate is kept, the cyclic utilization of byproducts can be simultaneously achieved when a target compound is synthesized, the cost is saved, and the preparation method is suitable for large-batch industrial production and conductive to environmental protection.

A self-terminating rapid process for controlled growth of platinum or platinum alloy monolayer films from a K2PtCl4—NaCl—NaBr electrolyte. Using the present process, platinum deposition may be quenched at potentials just negative of proton reduction by an alteration of the double layer structure induced by a saturated surface coverage of underpotential deposited hydrogen. The surface may be reactivated for platinum deposition by stepping the potential to more positive values where underpotential deposited hydrogen is oxidized and fresh sites for absorption of platinum chloride become available. Periodic pulsing of the potential enables sequential deposition of two dimensional platinum layers to fabricate films of desired thickness relevant to a range of advanced technologies, from catalysis to magnetics and electronics.

Antitumor agents with high antitumor effect have much side-effect, and its activity decreases when the toxicity decreases. Thus, satisfactory antitumor effects are not always obtained. Therefore, development of an antitumor agent having a high antitumor effect, with less side-effect and low toxicity is awaited. The present invention is to provide an antitumor agent of fine particles, wherein platinum chloride, chloroplatinic acids and hydroxyapatite are blend. Platinum chloride and chloroplatinic acids are platinum tetrachloride, tetrachloroplatinate, hexachloroplatinate, disodium platinum tetrachloride, disodium platinum hexachloride, dipotassium platinum tetrachloride, or dipotassium platinum hexachloride. The maximum particle diameter of hydroxyapatite is 1 [mu]m or less.

The present invention relates to a method for synthesizing highly dispersed supported platinum catalyst. More particularly, the present invention relates to a method of synthesizing highly dispersed supported platinum catalyst comprising: dissolving a reducing agent in a solvent to produce a solution, dissolving a platinum chloride to the same solvent; adding a carbon support and platinum in a predetermined ratio to the above mixed solution, agitating the mixture, performing ultrasonic treatment, and performing heat treatment; and adding a HCl solution, agitating the mixture, separating the precipitates via filtration to produce a catalyst, and then washing the catalyst with distilled water, thereby obtaining an active highly dispersed supported platinum catalyst which has excellent electric charge activity, uniformly-sized platinum particles and relatively high specific surface area.

The invention discloses a preparation method of a room-temperature hydrogen sensor, and relates to a hydrogen sensor. The preparation method comprises the steps of annealing a metal oxide; adding chloride which is palladium chloride or platinum chloride, polyvinylpyrrolidone, NaI.2H2O and deionized water in a beaker filled with dimethylformamide to obtain a brownish black solution, transferring the brownish black solution to a reaction kettle; then adding the annealed metal oxide in the reaction kettle and performing ultrasonic dispersion, sealing the reaction kettle after the metal oxide is dispersed completely, and placing at a set growth temperature, cooling the dispersed metal oxide to the room temperature when the reaction is ended, centrifuging and washing; and finally, dispersing a product in a solvent to obtain a room-temperature metal oxide hydrogen sensitive material with palladium or platinum nano particles deposited on the surface, ultrasonically dispersing the room-temperature metal oxide hydrogen sensitive material in absolute ethyl alcohol, dropping dispersed turbid liquid on a cleaned gold interdigital electrode to obtain a gas sensitive chip after alcohol is completely volatilized, and connecting the gas sensitive chip with a peripheral circuit to obtain the room-temperature hydrogen sensor.

The invention belongs to the technical field of precious metal catalysts, and particularly relates to a preparation method of a porous platinum oxide catalyst. The method comprises the following stepsthat 1, platinum chloride is added into distilled water for even stirring to obtain a platinum ion solution; 2, aluminium chloride is added into the platinum ion solution, stirring is continued untilcomplete dissolution, then high-substituted hydroxypropyl cellulose is slowly added, and even stirring is conducted to obtain aluminium-platinum dispersion liquid; 3, ammonia gas is introduced circularly by means of sealed reflux until no sediment is generated, so that suspended dispersion liquid is obtained; 4, the suspended dispersion liquid is subjected to reduced pressure distillation reaction for 2-4 h, after cooling, viscous liquid is obtained, and then the viscous liquid is added into a mould for constant-temperature pressurizing solidification reaction for 2-4 h to obtain mixed solid;5, the mixed solid is immersed in distilled water for low-temperature stirring reaction for 2-4 h, and then porous solid is obtained after removal; 6, the porous solid is soaked in a hydrochloric acid solution for sealed micro-boiling reaction for 20-50 min, and then through filtering, washing and sintering, the porous platinum oxide catalyst is obtained.