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NaA zeolite as an effective diffusion barrier in composite Pd/PSS membranes
(Elsevier Science, 2009-04)
Palladium composite membranes on porous stainless steel were prepared by electroless plating. In order to obtain a thin palladium film, an intermediate layer was necessary to modify the pore size of the substrate and form ...
H2 separation using pressed clinoptilolite and mixed copper-clinoptilolite disk membranes
(John Wiley & Sons Inc, 2017-03)
Disk membranes machined from high-purity natural clinoptilolite rocks demonstrated promising hydrogen separation efficiency. However, these membranes cannot be adequately scaled up. To overcome this and provide process ...
Separation of ternary hydrocarbon mixtures on Y zeolite membranes
(Elsevier Science Sa, 2009-02)
The permeation of a mixture of n-hexane, n-decane and toluene through a 40 μm Y zeolite tubular membrane on a support with negligible resistance to the mass transfer at 250 °C was modelled based on the Maxwell-Stefan ...
Improving Nafion/zeolite nanocomposite with a CF3SO3- based ionic liquid for PEMFC application
(2021-05-01)
Nafion/zeolite/ionic liquid composite membranes were prepared by the casting method. A fixed 3 wt% of the HZSM-5 zeolite was added to the polymer as well as the C16MI.CF3SO3 ionic liquid (IL) in various amounts in the range ...
Synthesis of Pt-zeolite coated palladium alloys as catalytic membranes for hydrogen production
(Pergamon-Elsevier Science Ltd, 2021-01)
PdAu composite membranes were applied for the preparation of PtNaA-PdAu catalytic membranes for hydrogen production from the water gas shift reaction. In the first stage, the deposition of NaA zeolite on top of the PdAu ...
NaA zeolite membranes on modified porous stainless steel supports: A comparative study of different SiO2 sources
(Brazilian Society of Chemical Engineering, 2019-10)
The deposition of a NaA zeolite layer on porous stainless steel substrates was optimized in order to obtain composite membranes for hydrogen separation. The effect of the silica source on NaA zeolite crystallinity and ...
Xylene isomerization in a ZSM-5/SS membrane reactor
(Springer, 2008-06)
A membrane reactor containing different types of ZSM-5/porous SS membranes was used to perform the xylene isomerization reaction. The parent Na-ZSM-5 layer was synthesized by secondary growth on top of porous stainless ...
Influence of exchanged cations (Na+, Cs+, Sr2+ and Ba2+) on xylene permeation through ZSM-5/SS tubular membranes
(Elsevier Science, 2008-07)
Na-ZSM-5 membranes were synthesized by secondary growth on the outer surface of stainless steel porous tubes. The membranes were ion-exchanged with Cs+, Ba2+ and Sr2+ to investigate their effect upon the separation of ...
Zeolitic core@shell adsorbents for the selective removal of free glycerol from crude biodiesel
(Wiley VCH Verlag, 2015-06)
Selective adsorption of free glycerol from crude biodiesel was investigated by using mesoporous silica spheres coated with a thin shell of microporous silicalite-1. A polycrystalline silicalite-1 shell was formed upon first ...