专利号:US-2024309024-A1 优先权日:2023-03-14 标题 :Direct synthesis of alkenylhalosilanes 发明人:LEWIS KENRICK MARTIN; ZHU YANJUN; BYRNE CHRISTOPHER M 权利人:MOMENTIVE PERFORMANCE MAT INC 摘要:A process for the direct synthesis of alkenylhalosilane monomers. Forming a slurry of liquid and copper-activated silicon from fresh silicon, cyclone fines and/or fine dust from silicon grinding, ultrafines and/or spent contact mass from the Direct Synthesis of alkylhalosilanes and arylhalosilanes, in a thermally stable solvent. Reacting the silanes by agitating the slurry with at least one unsaturated aliphatic or cycloaliphatic organohalide of the formula R1X, and optionally an organohalosilane and/or hydrogen halide, in the presence of a polymerization inhibiting Lewis base additive, at a reaction time, temperature and pressure effective to produce alkenylhalosilanes having the formulae, R1SiHX2, R12SiHX, R13SiX, R1SiX3, and R12SiX2 or mixtures thereof.
专利号:US-10913056-B2 优先权日:2017-07-31 标 题:Method for synthesis of copper/copper oxide nanocrystals 发明人:CHEN GUGANG; HARUTYUNYAN AVETIK; RAO YI; LI XIA 权利人:HONDA MOTOR CO LTD; UNIV TEMPLE; TEMPLE UNIV OF THE COMMONWEALTH SYSTEM OF HI 摘要:A simple approach to produce mixed Cu/Cu 2 O nanocrystals having a specific morphology by controlling the reaction temperature during Cu/Cu 2 O nanocrystals synthesis. Other variables are kept constant, such as the amount of reactants, while the reaction temperatures is maintained at a predetermined temperature of 70° C., 30° C. or 0° C., which are used to produce different and controlled morphologies for the Cu/Cu 2 O nanocrystals. The reaction mixture includes a copper ion contributor, a capping agent, a pH adjustor, and reducing agent. The reaction mixture is held at the predetermined temperature for three hours to produce the Cu/Cu 2 O nanocrystals. The synthesis method has advantages such as mass production, easy operation, and high reproducibility.
专利号:WO-2013057134-A1 优先权日:2011-10-19 标 题:Synthesis of semiconductor nanoparticles using metal precursors comprising non- or weakly coordinating anions 发明人:BAHNMUELLER STEFAN; TIAN SUSAN; TIAN SHIZHE; HOHEISEL WERNER 权利人:BAYER IP GMBH; BAYER SOUTH EAST ASIA PTE LTD 摘要:The present invention relates to a method for the synthesis of semiconductor nanoparticles comprising elements of the groups IB, IIB, IIIA, IVA, VA or VIA of the periodic classification wherein the composition of the core nanoparticle is selected from the group consisting of IB-VIA, IIB-VIA, IIIA-VIA, IB-IIIA-VIA or IB-IIB-TVA-VIA, IIB-IIIA-VIA, IIB-TVA-VA or mixtures thereof, and at least one shell comprises elements of the groups IIB and VIA,, wherein in case the core composition is IIB-VIA the shell comprises at least a further element selected from the groups IB, IIIA, IVA or VA, using metal precursors comprising non- or weakly coordinating anions. It further relates to the consecutive process for the synthesis that includes first the preparation of a binary nanoparticle system then modified to make a ternary system which again can be further modified to make a quaternary system.
专利号:US-8598046-B2 优先权日:2008-12-30 标 题 :Autosynthesizer for the controlled synthesis of nano- and sub-nanostructures 发明人:PACHAURI VIVEK; AHMAD ASHRAF; BALASUBRAMANIAN KANNAN; KERN KLAUS 权利人:PACHAURI VIVEK; AHMAD ASHRAF; BALASUBRAMANIAN KANNAN; KERN KLAUS; MAX PLANCK GESELLSCHAFT 摘要:The present invention relates to a method and apparatus for the synthesis of nanostructures using at least one solution providing at least one chemical element appropriate for the type of nanostructure, the method comprising the steps of: a) adding (admixing) a reducing agent to the at least one solution, b) bringing a suitable substrate into contact with the at least one solution before or after step a), c) forming nucleation growth sites on the substrate and d) maintaining the temperature at a suitable level for the growth of the nanostructures, characterized by the further steps of e) providing at least one space having at least one dimension in the micron range, e.g. in the range from 1 μm to 500 μm, adjacent a surface of the substrate, f) growing said nanostructures in said at least one space, g) periodically separating said nanostructures from the substrate and removing them.
专利号:WO-2024243127-A1 优先权日:2023-05-19 标题:Transformative synthesis of semiconductor nanoclusters with atomic precision via metal-ligand coordination exchange 发明人:ZENG CHENJIE; MA FUYAN 权利人:UNIV FLORIDA 摘要:Precision nanosynthesis is crucial for atomic engineering in nanostructures and mechanistic understanding of nanoscale reactions. But it is a daunting task due to emerging complexities in nanostructures and nanosynthesis. Here, we report the precision synthesis of semiconductor nanocluster via synergizing coordination, cluster, and colloidal chemistry at the nanoscale. In particular, by employing Cu26Se13(PEt2Ph)14 cluster and Cdl2(PPr3)2 coordination complex as precise precursors in colloidal cation exchange reaction, an atomically precise Cd26Se17I18(PPr3)10 cluster is produced at near- unity yield. X-ray crystallography reveals that the child CdSe cluster inherits its icosahedral-packed anion lattice and halide-phosphine-rich surface from parent cluster and complex respectively and further evolves into an enlarged structure. The hybridization of achiral precursors leads to chiral CdSe clusters co-crystallized as a 1:1 mixture of enantiomers. In-situ optical spectroscopy unveils that the reaction proceeds with well-defined pathways. Based on charge and coordination conservations, the structure of child cluster can be atomically linked to precursors via a series of transformations including surface coordination exchange, intra-cluster reorganization, and inter-cluster digestive ripening. The precision nanosynthesis with atomically defined precursors, pathways, and products is expected to further rationalize and diversify nanochemistry.
专利号:US-11548793-B2 优先权日:2016-10-19 标题:Synthesis of aerosol gels comprising macro-aggregates in a buoyancy-opposed flame reactor by a diffusion-limiting cluster aggregating process 发明人:CHAKRABARTY RAJAN K; LIU PAI 权利人:WASHINGTON UNIVERSITY ST LOUIS 摘要:A process for gas-phase synthesis of titanium dioxide aerosol gels with controlled monomer size and crystalline phase using a diffusion flame aerosol reactor operated in a buoyancy-opposed configuration is disclosed. The process includes introducing a precursor stream into a diffusion flame aerosol reactor, introducing a fuel stream into the reactor, combusting the precursor stream and the fuel stream in a flame to form at least one nanoparticle, and operating the reactor in a down-fired buoyancy-opposed configuration to produce the aerosol gel.
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合成参考文献
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