CAS: 1309-38-2; Iron Oxide Black

专利信息

专利号:WO-2012001578-A1
优先权日:2010-06-29
标 题 :Single-step synthesis of iron oxide nanoparticles
发明人：BURDINSKI DIRK; HAEX NICOLE PETRONELLA MARTIEN
权利人:KONINKL PHILIPS ELECTRONICS NV; BURDINSKI DIRK; HAEX NICOLE PETRONELLA MARTIEN
摘要:The invention provides methods for the synthesis of iron oxide nanoparticles and the particles obtainable by these methods. The particles can be used as tracer materials for magnetic particle imaging and for Magnetic Particle Spectroscopy (MPS). The method for the synthesis of these particles comprises the steps: (i) dissolving at least one water-soluble iron salt and at least one water-soluble stabilizer in water to form a reaction batch, (ii) adding at least one base to the reaction batch to yield a pH of 10 to 13, and (iii) exposing the reaction batch to a reaction temperature T R for a defined period of time DT, wherein T R ≥ 110°C, to obtain the iron oxide nanoparticles.

专利号:US-4789657-A
优先权日:1984-06-19
标题:Process for preparing iron-based catalysts for the synthesis of ammonia and catalysts so obtained
发明人：PERNICONE NICOLA; FERRERO FRANCESCO; GENNARO ANTONIO
权利人:FERTIMONT SPA
摘要:A process for preparing iron-based catalysts for the synthesis of ammonia by melting of magnetite along with metal oxides as promoters, subsequent cooling of the molten mass and reduction thereof to the desired size, wherein the abovesaid cooling occurs at a rate higher than 25° C./min., preferably ranging from 100° C. to 1600° C./min., at a temperature ranging from 1700° C. to 700° C. n The present invention relates to a process for preparing iron-based catalysts having a high activity in the ammonia synthesis, and to the catalyst so obtained.

专利号:US-5684130-A
优先权日:1995-06-05
标题 :Process for synthesis of organic compounds using magnetic particles
发明人：SUCHOLEIKI IRVING
权利人:SOLID PHASE SCIENCES CORP
摘要:This invention provides a process for the synthesis of a defined chemical entity, i.e., any desired chemical compound, in high yield using a solid support comprising a magnetic particle, in organic solvents. In general, a sequence of chemical synthetic steps are required to prepare the defined chemical entity bound to the particle. The particle comprises a resin bearing a high concentration of substituent pendant functional groups, to which the first reagent employed in the synthetic sequence binds; in subsequent reaction steps further reagents react with the growing chemical intermediate bound to the pendant functional groups until the defined chemical entity is obtained. The particle also comprises smaller paramagnetic or superpara-magnetic particles incorporated within the resin. The magnetic particle therefore responds to imposed magnetic field gradients, permitting ease of manipulation in steps involving removal of organic solvent.

专利号:US-2021230001-A1
优先权日:2018-07-09
标题 :System and method for scaled-up synthesis of doped and functionalized graphene derivatives through mechanical exfoliation process
发明人：SINGHAL AKSHAY VIVEK; SHARMA ANSHUL KUMAR; KAUSHIK AYUSHI
权利人:LOG 9 MATERIALS SCIENT PRIVATE LIMITED
摘要:The embodiments herein provide method and system for synthesizing graphene and a plurality of derivatives through a mechanical shearing process. The method comprises synthesizing a ceramic substrate from a ceramic material in particulate form; depositing carbon material on the synthesized ceramic substrate to synthesize graphene ceramic substrate coated with carbonaceous material; dissolving/dispersing the graphene ceramic substrate coated with carbonaceous material in one solvent and perform mechanical shearing to obtain a dispersion solution of graphene and its derivatives. This graphene dispersions is further subjected to ultrasonication to obtain graphene nano-platelets. The embodiments also provide mechanical exfoliation method for the bulk synthesis of doped and functionalized graphene nano-platelets. The doped graphene ceramic composite are subjected to exfoliation with or without simultaneous ultra-sonication for obtaining doped graphene sheet. The exfoliated graphene sheets obtained from doped graphene ceramic composite are subjected to ultra-sonication and centrifugation.

专利号:US-7070750-B2
优先权日:2000-11-21
标题:Multiple-pressure process for the production of ammonia
发明人：LIPPMANN DENNIS; SKAANDERUP-LARSEN JOHN
权利人:UHDE GMBH
摘要:The invention relates to a process for the production of ammonia from synthesis gas, the synthesis of ammonia from synthesis gas taking place in several lined-up synthesis systems, whereby ammonia is produced from a portion of the synthesis gas in each system with a part-stream being withdrawn and the respective downstream synthesis system being operated at a higher pressure than the respective upstream synthesis system.

专利号:US-4638032-A
优先权日:1983-12-12
标 题 :Magnetic particles as supports for organic synthesis
发明人：BENNER STEVEN A
权利人:GENETICS INST
摘要:A support system for organic synthesis comprising magnetic particles in a dispersion medium covalently attached to functional groups having affinity for polymer subunits, and methods for making and using the support system, e.g. for synthesis of oligodeoxynucleotides and polypeptides.