7 results about "Inorganic Syntheses" patented technology

The invention provides a deep natural gas formation cause identification and quantitative evaluation method combined with methane cluster isotope composition, and belongs to the technical field of oil-gas exploration. Based on a method of combining methane cluster isotope values (delta13CH3D and delta12CH2D2) with stable hydrocarbon isotope values (delta13CCH4 and deltaDCH4), the relative contribution of each end member of an inorganic cause and a thermal cause to deep natural gas accumulation is quantitatively analyzed according to the cluster isotope values of two methane sources, namely Fischer-Tropsch inorganic synthesis and organic matter thermal cracking. According to the method, the multi-solution limitation caused by the fact that a traditional method only depends on the methane monomer isotope is overcome, the accuracy of deep natural gas cause type judgment is remarkably improved through the methane cluster isotope, and accurate quantitative evaluation of the proportion of different cause components in the mixed-source natural gas is achieved; and a more reliable basis is provided for exploration and development of deep natural gas resources.

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.

The invention discloses a synthesis method and application of a bimetallic phosphide electrolyzed water catalyst, and belongs to the technical field of inorganic synthesis and electro-catalysis. The bimetallic phosphide Fe < 3-x > Co < x > P (x = 0-1.5) catalyst is prepared through high-energy ball milling and spark plasma sintering technologies; firstly, micron-sized transition metal powder Fe and Co and red phosphorus are subjected to high-energy ball milling treatment to obtain a uniform Co / Fe / FexP mixture precursor, then the mixture precursor is prepared into a homogeneous Fe3-xCoxP (x = 0-1.5) catalyst with a tetragonal phase Fe3P crystal structure through a spark plasma rapid sintering method, and the catalyst shows excellent oxygen evolution reaction performance. The synthesis method is simple, low in cost, efficient and high in controllability, the second element Co can be promoted to be effectively doped into the Fe3P crystal, the doping amount of the Co element is accurately regulated and controlled, the Fe3P-based catalytic material of a pure-phase structure is rapidly synthesized, and the application space is wide.

The invention relates to the field of inorganic matter synthesis and catalyst carrier material preparation, and discloses silicon-containing aluminum oxide and a preparation method thereof.The preparation method comprises the following steps that 1, an acidic aluminum salt solution and an alkaline solution are mixed and subjected to a neutralization reaction, and first mixed slurry is obtained; (2) introducing CO2-containing gas into the alkaline silicate solution, and carrying out carbonization reaction to obtain second mixed slurry; (3) mixing the first mixed slurry and the second mixed slurry to obtain third mixed slurry, and performing aging reaction to obtain silicon-containing aluminum hydroxide; and (4) roasting the silicon-containing aluminum hydroxide in the step (3) at high temperature to obtain the silicon-containing aluminum oxide. According to the preparation method of the silicon-containing aluminum oxide, the defects of preparation by independently adopting a neutralization precipitation method are overcome, the required washing and filtering time is shortened, the production efficiency is improved, the preparation method is simple, and the prepared silicon-containing aluminum oxide has relatively large pore volume and pore diameter while the relatively high specific surface area is maintained.