Hubei Yihua Chemical Technology R&D Co., Ltd. has obtained a patent titled “A Device for the Efficient Preparation of Black Phosphorus”

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According to news from June 10, 2025, **information from the Intellectual Property Office shows that Hubei Yihua Chemical Technology R&D Co., Ltd. has obtained a patent titled “A device for the efficient preparation of black phosphorus,” with the approval announcement number CN222961143U; the application was filed in August 2024. The patent abstract indicates that this utility model discloses a device for the efficient preparation of black phosphorus, belonging to the field of new materials in phosphorus chemistry. It includes a reactor, within which there is a reaction zone; a loading mechanism is arranged in this reaction zone. This loading mechanism consists of an outer-lined reactor placed inside the reaction zone, with a first sealing mechanism located on the top surface of the outer-lined reactor. An inner lining is present inside the outer-lined reactor, and multiple flat-bottomed tubes are arranged at equal intervals within this inner lining. Support nets are installed inside these flat-bottomed tubes. Heating resistance wires are present within the reaction zone, while a second sealing mechanism is located outside of it. The support mesh is placed in a flat-bottomed tube; under an inert atmosphere, the catalyst is filled into it, and then the flat-bottomed tube is placed inside a liner, with the phosphorus source being evenly distributed at the bottom of the liner. After completing the aforementioned filling, the entire lining is placed inside the outer-lined reactor, which is then sealed. High-temperature heat treatment is carried out within the reaction system at a precisely controlled temperature ； After the reaction was complete, black phosphorus deposited and grew inside the flat-bottomed tube, yielding high-quality black phosphorus crystals. According to Tianyancha, Hubei Yihua Chemical Technology R&D Co., Ltd. was established in 2022 and is located in Yichang. It is a company that focuses on the promotion and application of technology in its operations. The registered capital of the enterprise is 200 million RMB. According to Tianyancha’s big data analysis, Hubei Yihua Chemical Technology R&D Co., Ltd. has participated in 185 bidding projects and holds 49 patent records; in addition, the company possesses 4 administrative licenses.