1. Effect of water density on heterogeneous catalytic water gas shift reaction in the presence of Ru/C, Pd/LaCoO3 and Fe3O4 in supercritical water

    The Journal of Supercritical Fluids 97:211 (2015)

  2. Effect of temperature and pressure on hydrogen production from steam reforming of biogas with Pd-Ag membrane reactor

    International Journal of Hydrogen Energy 40(8) (2014)

    The steam reforming reaction of a biogas mixture was conducted with a hydrogen permeable palladium-silver membrane reactor at lower temperatures from 623 to 723 K and from 0.1 to 0.4 MPa of reaction side pressure. The biogas composition was in reference to that of the biogas obtained f...
  3. Effect of water density and air pressure on partial oxidation of bitumen in supercritical water

    Fuel 95:347 (2012)

    Highlights ► Bitumen was partially oxidized in supercritical water for selective CO formation. ► The bitumen – supercritical water – air system consisted of two phases. ► The CO selectivity increased and the amount of total gas tended to decrease with increasing water/oil rat...
  4. Gasification of bean curd refuse with carbon supported noble metal catalysts in supercritical water

    Biomass and Bioenergy 35(3):1245 (2011)

    Gasification of bean curd refuse was examined in the presence of carbon supported noble metal catalysts in sub- and supercritical water from 473 K to 673 K. The activity of catalyst was in the order of Ru/C >> Rh/C > Pt/C > Pd/C. The effect of reaction condition with Ru/C catalyst was ...
  5. Upgrading of bitumen with formic acid in supercritical water

    The Journal of Supercritical Fluids 55(1):232 (2010)

  6. Steam reforming of biogas mixtures with a palladium membrane reactor system

    Chemical Engineering Science 65(1):451 (2010)

    A fundamental study of the steam reforming of biogas and that derived from supercritical water gasification of glucose was conducted with a hydrogen-permeable palladium–silver membrane reactor. The hydrogen permeabilities for H ...
  7. The selective thermalcis-transisomerization of 1,2-diphenylsulfonyl ethylene in the presence of carbon dioxide

    The Journal of Supercritical Fluids 51(2):217 (2009)

  8. Hydrogen solution properties in a series of amorphous Zr–Hf–Ni alloys at elevated temperatures

    Journal of Alloys and Compounds 458(1):307 (2008)

    Amorphous alloys are anticipated as new membrane materials for high purity hydrogen production, as substitutes for expensive palladium alloys. For amorphous Zr–Ni-based alloys reported to date, hydrogen permeability increases with Zr content. Hydrogen solution properties in a series of amor...
  9. Partial oxidation kinetics ofm-hydroxybenzyl alcohol with noble metal catalysts in supercritical carbon dioxide

    The Journal of Supercritical Fluids 43(2):295 (2007)

    Partial oxidation of m-hydroxybenzyl alcohol was studied over several supported noble metal catalysts in a temperature range from 373 to 413 K, up to 2 MPa of oxygen pressure and 20 MPa of carbon dioxide pressure. The major product detected was m-hydroxybenza...
  10. The evaluation of the stability of Ni/MgO catalysts for the gasification of lignin in supercritical water

    Applied Catalysis A: General 327(2):300 (2007)

    The deactivation of catalyst during reuse test with Ni/MgO catalyst occurred regardless of regeneration treatments, and the reasons of deactivation were due to the presence of char-like carbonaceous products, the formation of Mg(OH) 2 phase and the decrease in Ni metal surface area. ...
  11. Selective dehydrogenation of unsaturated alcohols and hydrogen separation with a palladium membrane reactor

    Journal of Membrane Science 289(1):97 (2007)

    The dehydrogenation of cis-3-hexen-1-ol was studied with a hydrogen permeable palladium membrane reactor from 443 to 503 K. The main products were cis-3-hexenal, hexanal and 1-hexanol. The reaction was determined to proceed through consecutive reactions as follows: (1) d...
  12. Solid–liquid equilibrium and hydrogen solubility oftrans-decahydronaphthalene + naphthalene andcis-decahydronaphthalene + naphthalene for a new hydrogen storage medium in fuel cell system

    Fluid Phase Equilibria 257(2):183 (2007)

    Solid–liquid equilibrium was measured for benzene + cyclohexane, trans-decahydronaphthalene + naphthalene and cis-decahydronaphthalene + naphthalene under the atmospheric pressure in the temperature range from 226.69 to 353.14 K. The a...
  13. Hydrogen solubility of mixed naphthenes and aromatics for a new hydrogen storage medium in fuel cell system

    Fluid Phase Equilibria 261(1):375 (2007)

    Hydrogen solubility was measured for four equimolar binary solvent mixtures, benzene + toluene, cyclohexane + methylcyclohexane, benzene + methylcyclohexane and cyclohexane + toluene, and an equimolar quaternary, benzene + cyclohex...
  14. Hydrogen solubility in a chemical hydrogen storage medium, aromatic hydrocarbon, cyclic hydrocarbon, and their mixture for fuel cell systems

    Fluid Phase Equilibria 228-229:499 (2005)

    A synthetic type apparatus was designed to measure hydrogen solubility in four pure aromatic or cyclic hydrocarbons, benzene, cyclohexane, toluene, and methylcyclohexane, and two equimolar binary mixtures, benzene + cyclohexane, and methylcyclohexane + toluene. The experimental tempera...
  15. Preparation of thin palladium composite membrane tube by a CVD technique and its hydrogen permselectivity

    Catalysis Today 104(2):231 (2005)

    A thin and firmly deposited palladium membrane applicable to surface catalysis is attempted to be prepared. The technique and equipment developed in this study is based on chemical vapor deposition (CVD) under a forced flow, where due to a pressure difference applied between the outside and...
  16. Development of tubular substrates, silica based membranes and membrane modules for hydrogen separation at high temperature

    Journal of Membrane Science 267(1):8 (2005)

    Microporous membranes and membrane modules have been developed for high temperature separation of hydrogen from other gas molecules. Tubular alpha alumina substrate with 0.7 μm pore size and 40% porosity was prepared as the membrane substrate and an intermediate alpha alumina layer wi...
  17. Adsorption of N2and N2O on Ni(7 5 5) surface: ab initio periodic density functional study

    Surface Science 550(1):166 (2004)

    Adsorption of N 2 and N 2O at various sites on Ni(7 5 5) has been investigated by density functional theory (DFT) method (periodic DMol 3). Several possible adsorption structures (attaching the nitrogen atom to the surface, or lying parallel) are found for both...
  18. Adsorption of thiophene on Ni(1 0 0), Cu(1 0 0), and Pd(1 0 0) surfaces: ab initio periodic density functional study

    Surface Science 550(1):177 (2004)

    Adsorption of thiophene on the (1 0 0) surfaces of Ni, Cu, and Pd has been investigated by the ab initio density functional theory method (periodic DMol 3). Several parallel and perpendicular adsorption geometries are examined in detail. For Ni(1 0 0), both dis...
  19. All electron scalar relativistic calculations on adsorption of CO on Pt(1 1 1) with full-geometry optimization: a correct estimation for CO site-preference

    Chemical Physics Letters 384(4):271 (2004)

    Adsorption of CO on Pt(1 1 1) has been investigated by density functional theory (DFT) method (periodic DMol 3) with full-geometry optimization, changing calculation parameters (core treatment, functional, number of slab layer, k-points, and size of unit cell). Ther...
  20. A comparison of CO adsorption on Pt(2 1 1), Ni(2 1 1), and Pd(2 1 1) surfaces using density functional theory

    Surface Science 571(1):161 (2004)

    Adsorption of CO on Pt(2 1 1), Ni(2 1 1), and Pd(2 1 1) surfaces has been investigated by density functional theory (DFT) method (periodic DMol 3) with full geometry optimization. Adsorption energies and structures of CO on these surfaces are studie...