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Studies on bimetallic catalyst behavior during naphtha reforming
Author(s) -
Das Shantanu,
Srivastava Ramesh D.,
Saraf Deoki N.
Publication year - 1988
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.280430203
Subject(s) - naphtha , catalysis , yield (engineering) , bimetallic strip , benzene , chemistry , selectivity , catalyst poisoning , alkylation , chemical engineering , nitrogen , catalyst support , organic chemistry , materials science , metallurgy , engineering
Reforming of naphtha over Pt–Sn/Al 2 O 3 and Pt–Re/Al 2 O 3 catalysts has been investigated. Addition of nitrogen accelerated the catalyst deactivation process, enabling the study of activity decline and subsequent regeneration. Effect of presulfiding on the activity, selectivity and regeneration capacity of the catalyst was also examined. Presence of nitrogen promoted the dealkylation of C 7 hydrocarbons, resulting in a higher initial benzene yield which declined with loss in catalyst activity. Sulfiding lowered the aromatics yield by blocking some of the active sites but deactivation rate declined, prolonging catalyst life between regenerations. Performance of Pt–Sn catalyst was similar to that of Pt–Re catalyst except that the aromatics yield was somewhat higher in the latter case.