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A multiple microreactor system for parallel catalyst preparation and testing

Pantu, Piboon and Gavalas, George R. (2002) A multiple microreactor system for parallel catalyst preparation and testing. AIChE Journal, 48 (4). pp. 815-819. ISSN 0001-1541.

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A system containing nine catalytic microreactors for parallel preparation and testing of heterogeneous catalysts is described. The catalyst samples are prepared in the form of thin films coated on thin quartz rods by dip-coating in solutions of different composition. Catalyst-coated rods are placed within thin tubes housed inside a wider tube heated in an electrical furnace. A multiport valve serves to sequentially conduct the reaction products from each microreactor to a mass spectrometer for analysis. The system was tested with the reaction of methane reforming with carbon dioxide over Pt/Ce_(1−x)Gd_xO_(2−0.5x) and Pt/Ce_(1−x)Sm_xO_(2−0.5x) at 650 and 700°C. Individual catalysts were characterized by X-ray analysis, and induction-coupled plasma mass spectrometry for catalyst mass and elemental composition. The measurements showed that Pt/CeO_2 had the highest activity among the series of catalysts tested and generally the activity increased with the cerium oxide content. After exposure to the feedstream for 2–3 h at 700°C, most catalysts suffered significant deactivation except the mixed oxides with 25–85% samarium oxide that maintained relatively stable activity.

Item Type:Article
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Gavalas, George R.0000-0003-1468-6835
Additional Information:© 2002 American Institute of Chemical Engineers (AIChE). Manuscript received May 21, 2001, and revision received Oct. 15, 2001.
Issue or Number:4
Record Number:CaltechAUTHORS:20151006-150211344
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Official Citation:Pantu, P. and Gavalas, G. R. (2002), A multiple microreactor system for parallel catalyst preparation and testing. AIChE J., 48: 815–819. doi:10.1002/aic.690480415
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:60821
Deposited By: George Porter
Deposited On:07 Oct 2015 17:57
Last Modified:03 Oct 2019 09:01

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