an efficient pd-sn catalyst supported on mwnts for hydrogenation of high concentrated acetylene feedstocks: the potential role of isolated adsorption site

نویسندگان

e. esmaeili

a. rashidi

چکیده

in the present study, tin-promoted pd/mwnts nanocatalystwas synthesized via polyol technique for application in hydrogenation of high-concentrated acetylene feedstocks. tem images showed a restricted distribution of nanoparticles in the range of 3-5 nm. the results indicated that nanoparticles sizes were resistant to further catalyst deactivation. xrd patterns signified alloying between pd and sn which contained a high percentage of ordered intermetallic structures (70.8%), as confirmed by xps. according to the results, pore blocking and/or fouling was known as the main reasons of the catalyst deactivation. here, we supposed a novel deactivation mechanism based on which dehydrogenation susceptibility of carbonaceous species (green oil) played a significant role in the formation of the isolated adsorption sites and then, catalyst deactivation.

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An Efficient Pd-Sn Catalyst Supported on MWNTs for Hydrogenation of High Concentrated Acetylene Feedstocks: The Potential Role of Isolated Adsorption Site

In the present study, tin-promoted Pd/MWNTs nanocatalystwas synthesized via polyol technique for application in hydrogenation of high-concentrated acetylene feedstocks. TEM images showed a restricted distribution of nanoparticles in the range of 3-5 nm. The results indicated that nanoparticles sizes were resistant to further catalyst deactivation. XRD patterns signified alloying between Pd and ...

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عنوان ژورنال:
journal of nanostructures

ناشر: university of kashan

ISSN 2251-7871

دوره 4

شماره 2 2014

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