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Oien S.,University of Oslo | Agostini G.,University of Turin | Agostini G.,European Synchrotron Radiation Facility | Svelle S.,University of Oslo | And 10 more authors.
Chemistry of Materials | Year: 2015

We present three methods of the synthesis of zirconium metal-organic framework UiO-67 functionalized with platinum bipyridine coordination complexes (bpydcPtIICl2 and bpydcPtIVCl4) acting as linkers in the MOF framework. These Pt complexes can be reduced to bpydcPt0 under flow of H2 gas in the 600-700 K range, as probed by a sophisticated parametric refinement of in situ EXAFS data. IR spectroscopy testifies the high coordinative unsaturation of the reduced centers, able to form bpydcPt0(CO)2 dicarbonyl complexes upon CO adsorption. The large pore size of UiO-67 allows for ligand exchange between 2 Cl- and even bulky ligands such as toluene-3,4-dithiol. Framework bpydcPtIICl2 complexes can also be oxidized at room temperature to bpydcPtIVBr4 through oxidative addition of liquid Br2. XANES spectroscopy was used to monitor the changes in the Pt oxidation state along the observed reactions. Platinum bipyridine-functionalized UiO-67-Pt displays the same exceptional stability as the parent material as testified on both long and local range by in situ XRPD and Pt L3-edge EXAFS data. © 2015 American Chemical Society.

Document Keywords (matching the query): synthesis chemical, ligand exchanges, parametric refinements, organic polymers, ligands, organometallics.

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Patent
Sunshine Kaidi New Energy Group Co. | Date: 2015-05-06

A combined filtering process for recycling a precious metal from a Fischer-Tropsch synthetic product with the steps of: 1) after the product of a Fischer-Tropsch synthesis reaction is filtered by an inner filter, the product is introduced into a first filter buffer tank from an outlet on the upper part of a Fischer-Tropsch synthesis reactor, where a gas-phase product or a partially liquid-phase product filtered from the product by the first filter buffer tank is discharged from the top part, and where liquid-phase and solid-phase products discharged from the bottom part of the first filter buffer tank are introduced into a refining filter for product refinement; 2) the liquid-phase product that is mainly a catalyst slurry is introduced from the bottom part of the Fischer-Tropsch reactor into a dynamic filter for filtering, where the filtered liquid-phase product containing small particles of a spent catalyst and precious metal ions dissolved in the product is separated from the bottom part of the dynamic filter, introduced into a second filter buffer tank, and introduced from the bottom part of the second filter buffer tank into the refining filter for refinement; and, 3) a white clay cake is first formed on a filter plate in the refining filter, then, with respect to the product introduced into the refining filter, when the white clay cake is formed, a product refinement process is utilized for refinement processing of the product.

Claims which contain your search:

1. A combined filtering method for recycling a noble metal from a Fischer-Tropsch synthesis product, the method comprising:1) continuously filtering a reaction product in a Fischer-Tropsch synthesis reactor by an inner filter (2); discharging a filtered reaction product to a first filtration buffer tank (4) via an upper outlet of the Fischer-Tropsch synthesis reactor (1);separating a gas phase product or a part of a liquid phase product from the reaction product and discharging the gas phase product or the liquid phase product from a top of the first filtration buffer tank (4)to a product outlet; discharging a liquid-solid two-phase product from a bottom part of the first filtration buffer tank (4) and introducing the liquid-solid two-phase product to a refining filter (7) for product refining;2) introducing a liquid phase product containing a catalyst slurry from a bottom part of the Fischer-Tropsch synthesis reactor (1) to a dynamic filter (5), collecting the filtered liquid phase product comprising a waste catalyst in the form of small broken particles and noble metal ions; separating the liquid phase product from a bottom part of the dynamic filter (5) and introducing the liquid phase product to a second filtration buffer tank (6); and introducing the liquid phase product to the refining filter (7) from a bottom part of the second filtration buffer tank (6) to conduct product refining; and3) forming a clay filter cake on a filter disk; and refining the products introduced into the refining filter (7) in step 1) and step 2).

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Name Score Publications Conferences Grants Patents Trademarks News Webs
3.3 10 10 10 10 10 10 10
2.4 10 10 10 10 10 10 10
0.8 10 10 10 10 10 10 10
0.6 10 10 10 10 10 10 10
0.4 10 10 10 10 10 10 10
0.4 10 10 10 10 10 10 10
0.4 10 10 10 10 10 10 10
0.4 10 10 10 10 10 10 10
0.2 10 10 10 10 10 10 10
0.2 10 10 10 10 10 10 10
0.1 10 10 10 10 10 10 10
0.1 10 10 10 10 10 10 10
Rural University
0.1 1 - - 10 10 10 10
University of Turin
0.1 1 - - 10 10 10 10
University of Sao Paulo
0.1 1 - - 10 10 10 10
University of Stuttgart
0.1 1 - - 10 10 10 10
Justus Liebig University
0.1 1 - - 10 10 10 10
University of Oslo
0.1 1 - - 10 10 10 10
Vladimir State University
0.1 - 1 - 10 10 10 10
University of Turku
0.1 1 - - 10 10 10 10
University of Padua
0.1 1 - - 10 10 10 10
CNR Institute for Energetics and Interphases
0.1 1 - - 10 10 10 10
European Synchrotron Radiation Facility
0.1 1 - - 10 10 10 10
University of the Free State
0.1 1 - - 10 10 10 10
Southern Federal University
0.1 1 - - 10 10 10 10

Oien S.,University of Oslo | Agostini G.,University of Turin | Agostini G.,European Synchrotron Radiation Facility | Svelle S.,University of Oslo | And 10 more authors.
Chemistry of Materials | Year: 2015

We present three methods of the synthesis of zirconium metal-organic framework UiO-67 functionalized with platinum bipyridine coordination complexes (bpydcPtIICl2 and bpydcPtIVCl4) acting as linkers in the MOF framework. These Pt complexes can be reduced to bpydcPt0 under flow of H2 gas in the 600-700 K range, as probed by a sophisticated parametric refinement of in situ EXAFS data. IR spectroscopy testifies the high coordinative unsaturation of the reduced centers, able to form bpydcPt0(CO)2 dicarbonyl complexes upon CO adsorption. The large pore size of UiO-67 allows for ligand exchange between 2 Cl- and even bulky ligands such as toluene-3,4-dithiol. Framework bpydcPtIICl2 complexes can also be oxidized at room temperature to bpydcPtIVBr4 through oxidative addition of liquid Br2. XANES spectroscopy was used to monitor the changes in the Pt oxidation state along the observed reactions. Platinum bipyridine-functionalized UiO-67-Pt displays the same exceptional stability as the parent material as testified on both long and local range by in situ XRPD and Pt L3-edge EXAFS data. © 2015 American Chemical Society.

Document Keywords (matching the query): synthesis chemical, ligand exchanges, parametric refinements, organic polymers, ligands, organometallics.


Patent
Sunshine Kaidi New Energy Group Co. | Date: 2015-05-06

A combined filtering process for recycling a precious metal from a Fischer-Tropsch synthetic product with the steps of: 1) after the product of a Fischer-Tropsch synthesis reaction is filtered by an inner filter, the product is introduced into a first filter buffer tank from an outlet on the upper part of a Fischer-Tropsch synthesis reactor, where a gas-phase product or a partially liquid-phase product filtered from the product by the first filter buffer tank is discharged from the top part, and where liquid-phase and solid-phase products discharged from the bottom part of the first filter buffer tank are introduced into a refining filter for product refinement; 2) the liquid-phase product that is mainly a catalyst slurry is introduced from the bottom part of the Fischer-Tropsch reactor into a dynamic filter for filtering, where the filtered liquid-phase product containing small particles of a spent catalyst and precious metal ions dissolved in the product is separated from the bottom part of the dynamic filter, introduced into a second filter buffer tank, and introduced from the bottom part of the second filter buffer tank into the refining filter for refinement; and, 3) a white clay cake is first formed on a filter plate in the refining filter, then, with respect to the product introduced into the refining filter, when the white clay cake is formed, a product refinement process is utilized for refinement processing of the product.

Claims which contain your search:

1. A combined filtering method for recycling a noble metal from a Fischer-Tropsch synthesis product, the method comprising:1) continuously filtering a reaction product in a Fischer-Tropsch synthesis reactor by an inner filter (2); discharging a filtered reaction product to a first filtration buffer tank (4) via an upper outlet of the Fischer-Tropsch synthesis reactor (1);separating a gas phase product or a part of a liquid phase product from the reaction product and discharging the gas phase product or the liquid phase product from a top of the first filtration buffer tank (4)to a product outlet; discharging a liquid-solid two-phase product from a bottom part of the first filtration buffer tank (4) and introducing the liquid-solid two-phase product to a refining filter (7) for product refining;2) introducing a liquid phase product containing a catalyst slurry from a bottom part of the Fischer-Tropsch synthesis reactor (1) to a dynamic filter (5), collecting the filtered liquid phase product comprising a waste catalyst in the form of small broken particles and noble metal ions; separating the liquid phase product from a bottom part of the dynamic filter (5) and introducing the liquid phase product to a second filtration buffer tank (6); and introducing the liquid phase product to the refining filter (7) from a bottom part of the second filtration buffer tank (6) to conduct product refining; and3) forming a clay filter cake on a filter disk; and refining the products introduced into the refining filter (7) in step 1) and step 2).


Pedroso C.C.S.,University of Sao Paulo | Carvalho J.M.,University of Sao Paulo | Carvalho J.M.,University of Turku | Rodrigues L.C.V.,University of Sao Paulo | And 4 more authors.
ACS Applied Materials and Interfaces | Year: 2016

Persistent luminescence materials Lu2O3:R3+,M (Pr,HfIV Eu; or Tb,Ca2+) were successfully and rapidly (22 min) prepared by microwave-assisted solid-state synthesis (MASS) using a carbon microwave susceptor and H3BO3 as flux. Reaction times are reduced by up to 93% over previous synthetic methods, without special gases application and using a domestic microwave oven. All materials prepared with H3BO3 flux exhibit LuBO3 impurities that were quantified by Rietveld refinement from synchrotron radiation X-ray powder diffraction patterns. The flux does not considerably affect the crystalline structure of the C-Lu2O3, however. Scanning electron micrographs suggest low surface area when H3BO3 flux is used in the materials' synthesis, decreasing the amount of surface hydroxyl groups in Lu2O3 and improving the luminescence intensity of the phosphors. The carbon used as the susceptor generates CO gas, leading to complete reduction of TbIV to Tb3+ and partial conversion of PrIV to Pr3+ present in the Tb4O7 and Pr6O11 precursors, as indicated by X-ray absorption near-edge structure data. Persistent luminescence spectra of the materials show the red/near-IR, reddish orange, and green emission colors assigned to the 4fn → 4fn transitions characteristics of Pr3+, Eu3+, and Tb3+ ions, respectively. Differences between the UV-excited and persistent luminescence spectra can be explained by the preferential persistent luminescence emission of R3+ ion in the S6 site rather than R3+ in the C2 site. In addition, inclusion of HfIV and Ca2+ codopants in the Lu2O3 host increases the emission intensity and duration of persistent luminescence due to generation of traps caused by charge compensation in the lattice. Photonic materials prepared by MASS with H3BO3 flux show higher persistent luminescence performance than those prepared by the ceramic method or MASS without flux. Color tuning of persistent luminescence in Lu2O3:R3+,M provides potential applications in bioimaging as well as in solar cell sensitizers. © 2016 American Chemical Society.

Document Keywords (matching the query): microwave assisted solid state synthesis, solid state synthesis, rietveld refinement.


dos Santos A.G.,Rural University | Arab M.,CNRS Institute Materials Microelectronics nanosciences of Provence | Patout L.,CNRS Institute Materials Microelectronics nanosciences of Provence | de Souza C.P.,Federal University of Rio Grande do Norte
Catalysts | Year: 2014

In this study, we presented the synthesis of LaNi0.3Co0.7O3-δ (LNCO) and SrCo0.8Fe0.2O3-δ (SFCO) perovskites and their catalytic reactivity under CO gas flow. The synthesis method is based on the complexation method combining ethylenediaminetetraacetic acid (EDTA)-citrate. The as-prepared materials were characterized using X-ray diffraction/Rietveld refinement and electron microscopy. The diffractograms and Rietveld refinement showed that the EDTA-citrate method allows us to obtain monophasic powders with submicronic size. The structural analyses revealed different morphologies linked to the crystallinity of LNCO and SFCO, and to the mean crystallite size. The catalytic performances of LNCO and SFCO were studied in situ by Fourier Transform InfraRed spectrometer as a function of time and temperature. The catalytic process gave rise to total oxidation with carbon dioxide and water production. LNCO and SFCO exhibit the same profile for catalytic activity with a conversion rate of twice as high for LNCO. Below 150 °C, the kinetic conversion is slow, but beyond this temperature they reach rapidly the complete transformation at 250 °C and 275 °C for LNCO and SFCO, respectively. © 2014 by the authors; licensee MDPI, Basel, Switzerland.


Trademark
Lanzatech | Date: 2012-03-08

Fuels produced from biomass, namely, alcohols; mixed alcohol fuel; alcohol for fuel manufacture, namely, fuels with an alcoholic base; fuels containing alcohol; ethyl fuels; gaseous fuels; liquid fuels; solid fuels; smokeless fuels; liquid bio-fuels; gaseous bio-fuels; solid bio-fuels; smokeless bio-fuels; bio-diesel fuels; non chemical additives for oils and fuels. Production of energy; recycling; production, treatment and refinement of microorganisms and bacteria; production, treatment and refinement of fuels; production, treatment and refinement of fuels using carbon monoxide component of synthesis gas derived from biomass.


Trademark
Lanzatech | Date: 2012-04-11

Fuels produced from biomass, namely, alcohols; mixed alcohol fuel; alcohol for fuel manufacture, namely, fuels with an alcoholic base; fuels containing alcohol; ethyl fuels; gaseous fuels; liquid fuels; solid fuels; smokeless fuels; liquid bio-fuels; gaseous bio-fuels; solid bio-fuels; smokeless bio-fuels; bio-diesel fuels; non chemical additives for oils and fuels. Production of energy; recycling; production, treatment and refinement of microorganisms and bacteria; production, treatment and refinement of fuels; production, treatment and refinement of fuels using carbon monoxide component of synthesis gas derived from biomass.


Trademark
Lanzatech | Date: 2012-04-11

Fuels produced from biomass, namely, alcohols; mixed alcohol fuel; alcohol for fuel manufacture, namely, fuels with an alcoholic base; fuels containing alcohol; ethyl fuels; gaseous fuels; liquid fuels; solid fuels; smokeless fuels; liquid bio-fuels; gaseous bio-fuels; solid bio-fuels; smokeless bio-fuels; bio-diesel fuels; non chemical additives for oils and fuels. Production of energy; recycling; production, treatment and refinement of microorganisms and bacteria; production, treatment and refinement of fuels; production, treatment and refinement of fuels using carbon monoxide component of synthesis gas derived from biomass.


Voepel P.,Justus Liebig University | Suchomski C.,Justus Liebig University | Hofmann A.,Justus Liebig University | Gross S.,CNR Institute for Energetics and Interphases | And 4 more authors.
CrystEngComm | Year: 2016

In the present work, we report on the preparation of LiMnPO4 (lithiophilite) nanorods and mesocrystals composed of self-assembled rod subunits employing microwave-assisted precipitation with processing times on the time scale of minutes. Starting from metal salt precursors and H3PO4 as phosphate source, single-phase LiMnPO4 powders with grain sizes of approx. 35 and 65 nm with varying morphologies were obtained by tailoring the synthesis conditions using rac-1-phenylethanol as solvent. The mesocrystal formation, microstructure and phase composition were determined by electron microscopy, nitrogen physisorption, X-ray diffraction (including Rietveld refinement), dynamic light scattering, X-ray absorption and X-ray photoelectron spectroscopy, and other techniques. In addition, we investigated the formed organic matter by gas chromatography coupled with mass spectrometry in order to gain a deeper understanding of the dissolution-precipitation process. Also, we demonstrate that the obtained LiMnPO4 nanocrystals can be redispersed in polar solvents such as ethanol and dimethylformamide and are suitable as building blocks for the fabrication of nanofibers via electrospinning. © The Royal Society of Chemistry 2016.


Ozbayoglu A.M.,TOBB University of Economics and Technology | Kasnakoglu C.,TOBB University of Economics and Technology | Gungor A.,Akdeniz University | Biyikoglu A.,Gazi University | Uysal B.Z.,Gazi University
Journal of the Faculty of Engineering and Architecture of Gazi University | Year: 2013

A cascaded model is proposed for SYNGAS refinement. The first stage has a bypass outlet to transfer some SYNGAS to the output. Also, both stages have adjustable steam inputs controlling the amount of steam supply to both reactors separately; hence SYNGAS characteristics at the output can take the desired form. Satisfying the constraints of H2/CO ratio at reactor exit was emphasized. SYNGAS composition fed into the first stage characterizes the overall behavior. Hence, the structured model has the capability to refine any SYNGAS composition by identifying the proper process parameters of a given coal type for desired SYNGAS properties. The model was tested with three different coal types, and in each case the best bypass values and steam ratios were obtained.

Document Keywords (matching the query): coal gasification, water gas shift reactor, water gas shifts, synthesis gas refinement, syngas composition, gas characteristics, synthesis gas, syngas characteristics, water gas shift.


Trademark
CCG Energy Technology Co. and Choren Industries GmbH | Date: 2010-05-04

[ Chemicals used in industry, science, photography, agriculture, and horticulture, excluding fungicides, herbicides, insecticides and parasiticides ]. [ Fuels, namely, motor fuels, synthetic fuels, methanol fuel and other alcohol fuels for automotive industry, for engines, for the purpose of power production, heating or cooling and cooking; Diesel oil and fuels for spark ignition engines, kerosene; fuels and lubricants for automotive industry, for engines, for the purpose of power production, heating or cooling and cooking; industrial oils and greases for the production of lubricants, all aforementioned substances obtained from bio masses, coal and calorific value-rich fractions such as recycling materials and refuse ]. [ Apparatus and instruments for chemistry and physics, namely, components that convert energy from feedstock and bio mass into fuels for power production, namely, thermochemical preconditioning units for carbon containing feedstock, high temperature pressure gasifiers, burners, components of pneumatic coal transport systems, components of sluicing systems for solids, screw coolers, for the production of synthetic gases used in feedstock plants for the purpose of power production ]. [ Marketing, retail and wholesale store services relating to fuels, including motor oils and fuels and illuminants, including synthetic fuels and lubricants, including methanol and other alcohols, diesel oil and fuels for spark ignition engines, kerosene, industrial oils and greases and derivatives manufactured there from, obtained from bio masses, coal and calorific value-rich products such as residues and waste as well as other chemical products; marketing, retail and wholesale store services relating to industrial plants, plant components, and equipment of energy relevant industrial plants, including such for biomass and coal refinement; professional business consultancy for companies and organizations of the energy industry, namely, consulting relating to energy usage and cost management for industry and trade, consulting relating to testing, analysis, visualization and optimization of energy related procedural and operational sequences for power production as well as of energy consumption values and energy costs and consultancy relating to business development and project development services for future energy plants in the nature of power plants, plants for the production of synthetic fuels or synthesis gas production plants ]. Building services, namely, the erection of industrial plants, plant components and equipment of energy-relevant industry plants, including of bio mass and coal refinement; construction of energy-relevant industrial plants, plant components and equipment, including such for the production of fuel and synthesis gas, synthetic fuels and lubricants and other chemical products, obtained from bio masses, coal and calorific value-rich products, such as recycling materials and waste. [ Power supply, namely, delivery and distribution of electrical power, gas, heat and water; transport and storage of goods, including bio mass ]. [ Production of fuels for others, namely, motor fuels, synthetic fuels, methanol fuel and other alcohol fuels for automotive industry, for engines, for the purpose of power production, heating or cooling and cooking; production for others of diesel oil and fuels for spark ignition engines, kerosene, luminous substances, namely, waxes and hydrocarbon fuels, and lubricants for automotive industry, for engines, for the purpose of power production, heating or cooling and cooking, production for others of industrial oils and greases for the production of lubricants, all aforementioned substances obtained from bio masses, coal and calorific value-rich fractions such as recycling materials and refuse; generation of electrical power; gas production services and water production services, namely, production for others via the synthesis process producing the aforementioned fuels, oils, luminous substances, and lubricants from bio masses, coal and calorific value-rich products, such as recycling materials and waste as feedstock; recycling of waste ]. Engineering services, namely, feasibility studies, technical layout, development, process design, basic design, detailed design, and design review of energy-relevant industrial plants, plant components and equipment of industrial plants for the production of fuel and synthesis gas, synthetic fuels and lubricants and other chemical products, obtained from bio masses, coal and calorific value-rich fractions, such as recycling materials and refuse; technology research in the field of engineering relating to the aforementioned industrial plants, plant components, and equipment; further development of such industrial plants, plant components, and equipment; investigations being research services in the technology field of gasification technology; maintenance assessments of the performance and reliability of the aforementioned industrial plants, plant components, and equipment; analyses of technical data and statistics in the technology field of gasification technology; preparation of expert engineering opinions in the technology field of gasification technology.