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This work for the first time evaluates the ability of homogeneous, stable, and very pure zinc oxide nanoparticles (ZnONPs-GS) synthesized by the "green chemistry" - an environmentally friendly, cheap, and...

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A BSTRA C T Pd-23 at% Ag and Pd-78 at% Y hydrogen-di$%sion membranes were (1) prepared by argon-arc melting of the constituent elements, (2) characterised, (3) examined for hydrogen permeation and (4) used as catalysts in ethylene hydrogenation reactions. Ethylene was self-hydrogenated on the membrane surfaces in the absence ofpermeate hydrogen. The hydrogenation with andfor without the permeate hydrogen was carried out in the temperature range 100-450°C at ethylene pressures of 1.0-1.5 bars and diferential pressures across the membrane in the range 1.0-68 bars. Mainly CI-C4 hydrocarbons and up to 60% conversion of ethylene to products were obtained.