Investigation of Coke Formation on H-ZSM-5 Catalyst During Aromatization of C5 Paraffin and Olefin Using Optical and Fluorescence Microscopy 


Vol. 19,  No. 3, pp. 327-332, Sep.  2013
10.7464/ksct.2013.19.3.327


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  Abstract

Space- and time-resolved in-situ optical and fluorescence microspectroscopy techniques have been applied to investigate the coke formation during aromatization of C5 paraffin and olefin over H-ZSM-5 crystal. In-situ UV/vis absorption measurement offers space- and time-resolved information for the coke formation. Different coking trends have been observed with respect to the location of a crystal as well as the reactant types. From in-situ confocal fluorescence microspectroscopy study, it is revealed that the concentration of certain species photo-excited at 488 nm becomes high at the central region, whereas the compounds emitting fluorescence by 561 nm laser move towards the boundary region of the crystal. The different fluorescence patterns obtained varying excitation lasers suggest the existence of distinct fluorescence emitting species having different degree of coke growth.

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  Cite this article

[IEEE Style]

C. YM, "Investigation of Coke Formation on H-ZSM-5 Catalyst During Aromatization of C5 Paraffin and Olefin Using Optical and Fluorescence Microscopy," Clean Technology, vol. 19, no. 3, pp. 327-332, 2013. DOI: 10.7464/ksct.2013.19.3.327.

[ACM Style]

Chung YM. 2013. Investigation of Coke Formation on H-ZSM-5 Catalyst During Aromatization of C5 Paraffin and Olefin Using Optical and Fluorescence Microscopy. Clean Technology, 19, 3, (2013), 327-332. DOI: 10.7464/ksct.2013.19.3.327.

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pISSN : 1598 - 9712
eISSN : 2288 - 0690

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