1. Structural changes of a Pd-based membrane during direct hydroxylation of benzene to phenol

    Catalysis Today 118(1):57 (2006)

    The relationship between the chemical state and the catalytic activity of Pd was studied to improve direct hydroxylation by using a Pd membrane reactor. Pretreatment with oxygen or hydrogen at 473 K caused the surface of Pd to easily suffer from oxidation or reduction, respectively, b...
  2. Direct hydroxylation of aromatic compounds by a palladium membrane reactor

    Catalysis Today 104(2):260 (2005)

    Direct hydroxylation of aromatic compounds was effectively achieved by using a newly developed Pd membrane reactor in which the Pd membrane is thin enough (ca. 1 μm) to allow permeation of hydrogen below 500 K. In this reactor, the active oxygen species is formed on the surface ...
  3. Preparation of palladium and silver alloy membrane on a porous α-alumina tube via simultaneous electroless plating

    Journal of Membrane Science 247(1):21 (2005)

    Simultaneous deposition of palladium (Pd) and silver (Ag) on the porous α-alumina tube with desired metal ratio was attempted by electroless plating procedure. Seeding of Pd nano-particles on the alumina surface resulted in effective co-deposition of Pd and Ag. Nano-particles of Pd nuclei w...
  4. Hydrogen recovery from cyclohexane as a chemical hydrogen carrier using a palladium membrane reactor

    Catalysis Today 82(1):119 (2003)

    A palladium membrane reactor was applied to recover the hydrogen from cyclohexane as one of the promising chemical hydrogen carriers. The operation conditions of the palladium membrane reactor to obtain a higher hydrogen recovery were predicted by computer simulation. As a result, it was sh...
  5. A one-step conversion of benzene to phenol with a palladium membrane.

    Science 295(5552):105 (2002) PMID 11778042

    Existing phenol production processes tend to be energy-consuming and produce unwanted by-products. We report an efficient process using a shell-and-tube reactor, in which a gaseous mixture of benzene and oxygen is fed into a porous alumina tube coated with a palladium thin layer and hydrogen is ...