Characterization of Industrial Pt-Sn/Al2O3 Catalyst and Transient Product Formations during Propane Dehydrogenation

Ho, Kah Sing and Chye, Joanna Jo Ean and Chin, S. Y. and Cheng, C. K. (2013) Characterization of Industrial Pt-Sn/Al2O3 Catalyst and Transient Product Formations during Propane Dehydrogenation. Bulletin of Chemical Reaction Engineering & Catalysis, 8 (1). pp. 77-82. ISSN 1978-2993. (Published)

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Abstract

The major problem plaguing propane dehydrogenation process is the coke formation on the Pt-Sn/Al2O3 cat-alyst which leads to catalyst deactivation. Due to information paucity, the physicochemical characteristics of the commercially obtained regenerated Pt-Sn/Al2O3 catalyst (operated in moving bed reactor) and coke formation at different temperatures of reaction were discussed. The physicochemical characterization of re-generated catalyst gave a BET surface area of 104.0 m2/g with graphitic carbon content of 8.0% indicative of incomplete carbon gasification during the industrial propylene production. Effect of temperatures on coke formation was identified by studying the product yield via temperature-programmed reaction carried out at 500 oC, 600 oC and 700 oC. It was found that ethylene was precursor to carbon laydown while propylene tends to crack into methane. Post reaction, the spent catalyst possessed relatively lower surface area and pore radius whilst exhibited higher carbon content (31.80% at 700 oC) compared to the regenerated cata-lyst. Significantly, current studies also found that higher reaction temperatures favoured the coke for-mation. Consequently, the propylene yield has decreased with reaction temperature. © 2013 BCREC UNDIP. All rights reserved

Item Type:	Article
Uncontrolled Keywords:	Carbon formation; Industrial Pt-Sn/Al2O3 catalyst; Propane dehydrogenation
Subjects:	Q Science > QD Chemistry
Faculty/Division:	Faculty of Chemical & Natural Resources Engineering
Depositing User:	Ms. Hazima Anuar
Date Deposited:	26 Oct 2015 03:07
Last Modified:	11 Jan 2018 02:29
URI:	http://umpir.ump.edu.my/id/eprint/6764
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