title = "Thermal plasma synthesis of ultrafine iron particles", abstract = "Ultrafine iron powder was synthesized in an atmospheric-pressure radio-frequency plasma reactor by injecting relatively course iron powder into the plasma, where it evaporated.
Nanocrystals with quantum-confined length scales are often considered impractical for metal-ion battery electrodes due to the dominance of solid-electrolyte interphase (SEI) layer effects on the measured storage properties. Here we demonstrate that ultrafine sizes (∼4.5 nm, average) of iron pyrite, or FeS2, nanoparticles are advantageous to sustain reversible conversion reactions in sodium
Sep 01, 2016· This demonstrates a robustness of this technique and promises a possible potential for the use in large scale applications, and even industrial production of pure ultrafine ferromagnetic iron oxide nanoparticles. 4. Conclusions. Ultrafine Fe 3 O 4+δ nanoparticles were prepared by thermal decomposition of iron glycerolate. Iron glycerolate was
The ultrafine iron oxide powders were successfully synthesized using the plasma dynamic synthesis method, based on the use of a coaxial magnetoplasma accelerator with the iron electrode system. The synthesis was implemented in the high-speed iron-containing plasma jet, flowing into the space of the sealed chamber, filled with the gaseous
The synthesis of capped γ-Fe2O3 ultrafine particles from thermal treatment of iron(III) hydroxide caprylate in boiling tetraline with retention of the integrity of the caprylate units during the reaction process is reported. This novel material due to the organophilic mantle around the particle surfaces can be easily dissolved in organic solvents and thus the availability of stable magnetic
As a series of fundamental study on the gas evaporation method, a levitation-melted iron was evaporated in the gas mixtures of argon + ammonia, argon + nitrogen to synthesize ultrafine particles of iron nitride that got attention as one of the magnetic materials. The particles that were obtained in the gas mixture of argon and nitrogen were α-Fe.
@article{osti_920235, title = {Separation of Fischer-Tropsch Wax Products from Ultrafine Iron Catalyst Particles}, author = {Amitava Sarkar and James K. Neathery and Burtron H. Davis}, abstractNote = {A fundamental filtration study was started to investigate the separation of Fischer-Tropsch Synthesis (FTS) liquids from iron-based catalyst particles.
@article{osti_920235, title = {Separation of Fischer-Tropsch Wax Products from Ultrafine Iron Catalyst Particles}, author = {Amitava Sarkar and James K. Neathery and Burtron H. Davis}, abstractNote = {A fundamental filtration study was started to investigate the separation of Fischer-Tropsch Synthesis (FTS) liquids from iron-based catalyst particles.
The synthesis of ultrafine catalyst particles could therefore provide a means to enhance the activity of dispersed iron (or other metal or mixed-metal) catalysts. This research is concerned with the synthesis of ultrafine iron-based particles by a laser pyrolysis technique and to relate their composition, structure and other properties to their
Synthesis of an Ultrafine Iron and Soot Aerosol for the Evaluation of Particle Toxicity Article (PDF Available) in Aerosol Science and Technology 35(3) · September 2001 with 39 Reads
Jan 26, 2002· The synthesis of capped γ-Fe2O3 ultrafine particles from thermal treatment of iron(III) hydroxide caprylate in boiling tetraline with retention of the integrity of the caprylate units during the reaction process is reported. This novel material due to the organophilic mantle around the particle surfaces can be easily dissolved in organic solvents and thus the availability of stable magnetic
The ultrafine iron oxide powders were successfully synthesized using the plasma dynamic synthesis method, based on the use of a coaxial magnetoplasma accelerator with the iron electrode system.
Experiments on the synthesis of ultrafine iron particles have been made for the control of particle size distribution using the gas phase reduction of ferrous chloride with hydrogen. The previous...
In summary, ultra-fine iron phosphide (FeP) of the orthorhombic phase was successfully prepared via a benzene-thermal synthetic route by the reaction of anhydrous iron chloride (FeCl 3) and sodium phosphide (Na 3 P) at 180–190°C. Our work verifies that the solvothermal synthesis technique is an effective and facile method for preparing metal
Abstract. For the vapor-phase synthesis of iron particles from FeCl 2 at temperatures ranging from 800 to 950‡C the reason is sought why the model based on the classical nucleation theory brought an increase of particle size with temperature increase, in reverse to experimental observation. The nucleation rate according to the classical theory should decrease with a temperature increase, due
Jul 22, 2016· The chosen method for the synthesis of catalytic systems makes it possible to introduce promoters without any marked enlargement of the dispersed phase (130–160 nm). High-temperature Fischer–Tropsch synthesis is performed in a slurry reactor using catalysts prepared from reverse iron-containing microemulsions.
Powder iron phosphide (FeP) has been prepared via a benzene-thermal synthesis with the reaction of anhydrous iron chloride (FeCl3) and sodium phosphide (Na3P) at 180–190°C.
Nanocrystals with quantum-confined length scales are often considered impractical for metal-ion battery electrodes due to the dominance of solid-electrolyte interphase (SEI) layer effects on the measured storage properties. Here we demonstrate that ultrafine sizes (∼4.5 nm, average) of iron pyrite, or FeS2, nanoparticles are advantageous to sustain reversible conversion reactions in sodium
Slurry phase Fischer-Tropsch synthesis was conducted with an ultrafine iron oxide catalyst promoted with either K or Zr or both. Pretreatment in CO yielded higher conversions and a more stable catalyst than activation in hydrogen or synthesis gas.
Separation of Fischer-Tropsch Wax Products from Ultrafine Iron Catalyst Particles Quarterly Report James K. Neathery, Gary Jacobs, and Burtron H. Davis Reporting Period January 1 to March 31, 2004 The University of Kentucky Center for Applied Energy Research 2540 Research Park Drive Lexington, Kentucky 40511-8410
hydrothermal synthesis or ultrafine iron oxide powders, the iron hydroxide, treated in the neutral or alkali solutions, is mostly used as a precursor. The preparation of iron (III) oxide from homogeneous acidic solutions at elevated temperature is studied of noticeably less degree. The goal of present work is investigation of iron (III)
The ultrafine iron oxide powders were successfully synthesized using the plasma dynamic synthesis method, based on the use of a coaxial magnetoplasma accelerator with the iron electrode system.
Jul 22, 2016· The chosen method for the synthesis of catalytic systems makes it possible to introduce promoters without any marked enlargement of the dispersed phase (130–160 nm). High-temperature Fischer–Tropsch synthesis is performed in a slurry reactor using catalysts prepared from reverse iron-containing microemulsions.
Slurry phase Fischer-Tropsch synthesis was conducted with an ultrafine iron oxide catalyst promoted with either K or Zr or both. Pretreatment in CO yielded higher conversions and a more stable catalyst than activation in hydrogen or synthesis gas.
hydrothermal synthesis or ultrafine iron oxide powders, the iron hydroxide, treated in the neutral or alkali solutions, is mostly used as a precursor. The preparation of iron (III) oxide from homogeneous acidic solutions at elevated temperature is studied of noticeably less degree. The goal of present work is investigation of iron (III)
Mar 31, 2005· @article{osti_840359, title = {SEPARATION OF FISCHER-TROPSCH WAX PRODUCTS FROM ULTRAFINE IRON CATALYST PARTICLES}, author = {James K. Neathery and Gary Jacobs and Burtron H. Davis}, abstractNote = {In this reporting period, a fundamental filtration study was continued to investigate the separation of Fischer-Tropsch Synthesis (FTS) liquids from iron-based catalyst particles.
An unpromoted ultrafine iron nano-particle catalyst was used for Fischer–Tropsch synthesis (FTS) in a CSTR at 270°C, 175psig, H2/CO=0.7, and a syngas space velocity of 3.0sl/h/g Fe.
Powder iron phosphide (FeP) has been prepared via a benzene-thermal synthesis with the reaction of anhydrous iron chloride (FeCl3) and sodium phosphide (Na3P) at 180–190°C.
Nanocrystals with quantum-confined length scales are often considered impractical for metal-ion battery electrodes due to the dominance of solid-electrolyte interphase (SEI) layer effects on the measured storage properties. Here we demonstrate that ultrafine sizes (∼4.5 nm, average) of iron pyrite, or FeS2, nanoparticles are advantageous to sustain reversible conversion reactions in sodium
Separation of Fischer-Tropsch Wax Products from Ultrafine Iron Catalyst Particles Quarterly Report James K. Neathery, Gary Jacobs, and Burtron H. Davis Reporting Period January 1 to March 31, 2004 The University of Kentucky Center for Applied Energy Research 2540 Research Park Drive Lexington, Kentucky 40511-8410
Ultrafine reactive iron powder was prepared by a high-performance milling procedure using commercially available iron powder. The milled iron material was found to have very high affinity to oxygen. The activated powder reacted at very mild conditions even with traces of oxygen in argon. The deactivated iron material can be easily reactivated by reduction in a stream of diluted hydrogen.
Fischer–Tropsch synthesis in the presence of ultrafine iron-containing catalysts derived from reverse microemulsions Article in Petroleum Chemistry 56(6):535-539 · June 2016 with 17 Reads
Abstraet--Ultrafine iron powder was synthesized in an atmospheric-pressure radio-frequency plasma reactor by injecting relatively course iron powder into the plasma, where it evaporated. The renucleated iron particles were characterized by means of a sampling capillary and dilution system
Ultra-fine Fe2O3 nano-particles are synthesized using H2/O2 co-axial diffusion flame with the state-of-the-art electro-spraying (e-spray) technique at atmospheric condition. Fe(CO)5 is used as a precursor and the liquid phase Fe(CO)5 is injected directly into the center of the flame using the electro-spraying method. The synthesized particle morphology sampled from the inside of flame is
Synthesis of UltraFine Iron-Oxide NanoParticles in a Diffusion Flame with ElectroSpraying Assistance Article in Materials Science Forum 449-452:1169-1172 · January 2004 with 13 Reads
Ultrafine reactive iron powder was prepared by a high-performance milling procedure using commercially available iron powder. The milled iron material was found to have very high affinity to oxygen. The activated powder reacted at very mild conditions even with traces of oxygen in argon. The deactivated iron material can be easily reactivated by reduction in a stream of diluted hydrogen.
Fischer–Tropsch synthesis in the presence of ultrafine iron-containing catalysts derived from reverse microemulsions Article in Petroleum Chemistry 56(6):535-539 · June 2016 with 17 Reads
Abstraet--Ultrafine iron powder was synthesized in an atmospheric-pressure radio-frequency plasma reactor by injecting relatively course iron powder into the plasma, where it evaporated. The renucleated iron particles were characterized by means of a sampling capillary and dilution system
Synthesis of UltraFine Iron-Oxide NanoParticles in a Diffusion Flame with ElectroSpraying Assistance Article in Materials Science Forum 449-452:1169-1172 · January 2004 with 13 Reads
Synthesis of an Ultrafine Iron and Soot Aerosol for the Evaluation of Particle Toxicity Gosu Yang,Steven Teague,Kent Pinkerton & Ian M. Kennedy Pages 759-766
Aug 17, 2017· In this work, we prepared the novel ultrafine amorphous iron oxyhydroxide/g-C 3 N 4 nanosheets heterojunction nanocomposites through a simple in
Separation of Fischer-Tropsch Wax Products from Ultrafine Iron Catalyst Particles Final Technical Report Amitava Sarkar, James K. Neathery, and Burtron H. Davis (P. I.) Reporting Period September1, 2003 to September 30, 2006 The University of Kentucky Center for Applied Energy Research 2540 Research Park Drive Lexington, Kentucky 40511-8410
In this reporting period, a fundamental filtration study was started to investigate the separation of Fischer-Tropsch Synthesis (FTS) liquids from iron-based catalyst particles. Slurry-phase FTS in slurry bubble column reactor systems is the preferred mode of production since the reaction is highly exothermic. Consequently, heavy wax products must be separated from catalyst particles before
ABSTRACT ABSTRACT Slurry phase Fischer-Tropsch synthesis has been conducted starting with an ultrafine iron oxide catalyst with an average particle size of 30A. Catalyst activity gradually increased during the first 400 hour of synthesis and then remained stable for 250 days. Potassium promotion greatly increased the initial activity of the catalyst; however, the stability decreased.
Ultra-fine Fe2O3 nano-particles are synthesized using H2/O2 co-axial diffusion flame with the state-of-the-art electro-spraying (e-spray) technique at atmospheric condition. Fe(CO)5 is used as a precursor and the liquid phase Fe(CO)5 is injected directly into the center of the flame using the electro-spraying method. The synthesized particle morphology sampled from the inside of flame is
Synthesis of an Ultrafine Iron and Soot Aerosol for the Evaluation of Particle Toxicity
In this research, magnesium-thermic reduction in gas phase was used to synthesize an ultra-fine nickel-iron intermetallic compound. Synthesis of nickel-iron submicron powder by metal chlorides and magnesium vapors was studied.
Task 1.4. Ultra-fine Iron Filtration Fischer-Tropsch Synthesis with Ultrafine Iron Nano-Catalyst in a CSTR Growth of Catalyst Particle with Reaction Time Introduction Fischer-Tropsch synthesis (FTS) is a major route for producing a wide variety of hydrocarbons and oxygenates from synthesis gas (CO +H2) made from coal or natural
Abstract. A method for one-step synthesis of ultrafine agarose-coated superparamagnetic iron oxide nanoparticles (AC-SPIONs) was developed. The method is facile and fast and requires no organic solvent or
Liming Heavy Industry provides all kinds of crushing machines including stationary crusher and mobile crusher
Copyright © 2004-2020 by China Liming Heavy Industry Science and Technology Co. LTD All rights reserved
