CAS: 127-95-7; Potassium Carboxyformate

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583-52-8 6487-48-5 6100-20-5

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专利信息

专利号:US-2024263349-A1
优先权日:2023-02-02
标 题 :Phase-controllable synthesis of transition metal dichalcogenide monolayer crystals
发明人：ZHANG HUA; ZHAI WEI; WANG YONGJI
权利人:UNIV CITY HONG KONG
摘要:The present invention provides a general salt-assisted chemical vapour deposition method for phase-controllable synthesis of 1T′ and 2H-phase transition metal dichalcogenide (TMD) monolayer crystals. The method comprises: mixing a transition metal compound powder and a salt powder to form a precursor; placing a substrate on top of the precursor; placing the precursor and the substrate at a center position in a chemical vapour deposition (CVD) furnace; placing a chalcogen powder at an upstream position relative to the precursor along a gas-flow direction in the CVD furnace; heating up the CVD furnace to a growth temperature within the heat-up time; keeping the CVD furnace at the growth temperature for a growth time under a mixed gas flow of H2 and Ar. The optical and electrical characterizations reveal the phase-dependent in-plane isotropy and anisotropy of the as-synthesized 2H and 1T′-phase crystals. The 1T′-TMD monolayer crystals demonstrate much-improved phase transition temperatures.

专利号:US-4436835-A
优先权日:1982-03-24
标 题:Process for preparation of catalysts
发明人：HORIE SHIGERU; YAMAMOTO YASUO; IKARASHI TAKEO
权利人:MITSUBISHI GAS CHEMICAL CO
摘要:Disclosed is a process for the preparation of a catalyst for the synthesis of methyl formate by dehydrogenating methanol in the gaseous phase, said process being characterized in that (A) at least one phosphate selected from the group consisting of copper phosphates, zinc phosphates and aluminum phosphates, and (B) at least one chloride selected from the group consisting of copper chlorides, zinc chloride, aluminum chloride, alkali metal chlorides and alkaline earth metal chlorides and/or (C) at least one compound selected from the group consisting of alkali metal compounds (exclusive of halides) and alkaline earth metal compounds (exclusive of halides) are added to copper oxide, zinc oxide and aluminum oxide. The catalyst obtained according to this process has a high activity for preparing methyl formate by dehydrogenating methanol in the gaseous phase, and this catalyst is excellent in the heat resistance and durability and has a high mechanical strength.

专利号:CN-118422326-A
优先权日:2023-02-02
标 题 :Phase-controlled synthesis method of transition metal disulfide monolayer crystals