4 results about "Inorganic Syntheses" patented technology

The application discloses a bismuth-based metal organic nanosheet material and a preparation method and application thereof, relates to the field of inorganic synthesis and the field of energy electrocatalysis technology. The preparation method is to use bismuth salt as a metal source, use amino succinic acid as an organic ligand, and prepare the bismuth-based metal organic nanosheet (Bi-MON) material by using a hydrothermal method. The Bi-MON material synthesized by the application presents an ultrathin nanosheet morphology, and the thickness is only 3 nm. Moreover, the preparation method is simple, does not need to add any surfactant or regulator, and does not use any organic solvent in the whole synthesis and post-processing process, so that green synthesis in the whole process is realized, the condition is mild, and the method is suitable for mass synthesis. Finally, the Bi-MON material synthesized by the application exhibits excellent electrocatalytic carbon dioxide reduction performance, and the faradic efficiency of formate generated under an industrial current density of 0.4 A·cm 2 -2 can reach 97.1%, and the Bi-MON material has a potential application prospect.

This utility model relates to inorganic synthesis and materials science, specifically to the production of FeS2 pyrite with trace impurities of Au, Ag, Te, and Cu for subsequent use as a reference sample in laser ablation-inductively coupled plasma mass spectrometry (LA-ICPMS). The technical result achieved is a pyrite-based material with homogeneously distributed trace impurities of Au, Ag, Te, and Cu. The sample is obtained in the following manner, with all annealing processes carried out in quartz ampoules sealed under vacuum: 1) pyrite synthesis by annealing precursors in the form of elemental substances Fe and S in stoichiometric ratios at 700°C; 2) mechanical homogenization of the matrix with trace elements in chalcogenide form in a planetary ball mill with a drum and balls made of zirconium oxide for 60 minutes with the addition of hexane; 3) pressing and annealing the resulting powder at 600°C for 12 hours. The proposed utility model enables the production of high-quality pyrite-based materials with trace amounts of Au, Ag, Te, and Cu, which can subsequently be used as reference samples in LA-ICP-MS.

This invention discloses a high-purity lithium borohydride and its preparation method, belonging to the field of inorganic synthesis technology. The method includes: surface activation of lithium hydride with an aminosilane activator, reaction with a borane-tetrahydrofuran complex at 30-80℃, followed by impurity removal through a combination of lithium bromide and alkaline alumina, negative pressure decomposition, crystallization, washing, and drying to obtain high-purity lithium borohydride. The obtained product is a white crystalline powder with a purity ≥99.90%, chloride ions ≤15ppm, free alkali ≤50ppm, and metallic impurity Na. + / K + / Al 3+ ≤5 / 5 / 1ppm, particle size D50=5-15μm, ionic conductivity at 25℃≥3.0×10 ‑5 S / cm, moisture absorption rate ≤0.1% / 24h. This invention has wide raw material adaptability, mild process, and high product purity, and is suitable for solid electrolytes, pharmaceutical synthesis and other fields.

The present application relates to the technical field of inorganic synthesis, and provides a preparation method of cis-diiododiammine platinum (II). The present application dissolves potassium chloroplatinite in a polar solvent to obtain a potassium chloroplatinite solution; iodine source and nitrogen source are sequentially added into the potassium chloroplatinite solution to react, so as to obtain the cis-diiododiammine platinum (II). The present application uses potassium chloroplatinite, iodine source and nitrogen source as raw materials, can promote the efficient reaction under mild conditions, and improves the reaction efficiency and product yield. The results of examples show that the reaction time is only 0.5 h when the cis-diiododiammine platinum (II) is prepared by the method of the present application, and the product yield can reach more than 95%. In addition, the process of the present application is simple, the synthesis route is short, the safety is good, the raw materials are cheap and easy to obtain, and the present application is suitable for industrial batch production.