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Reaction of thiophene on CoMo/A1 2 O 3 catalysts of various loading at low hydrogen excess
Author(s) -
Manninger I.,
Paál Z.,
Henze K. P.,
De Joung G.
Publication year - 1990
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450680316
Subject(s) - thiophene , hydrodesulfurization , catalysis , tetrahydrothiophene , chemistry , diene , stoichiometry , hydrogen , inorganic chemistry , reagent , photochemistry , medicinal chemistry , organic chemistry , natural rubber
Co‐Mo/Al 2 0 3 catalysts of various CoMo loadings were examined in the hydrodesulfurization (HDS) reaction of thiophene and tetrahydrothiophene at near stochiometric hydrogen: thiophene ratio. Good compensation plots were found for both reagents and all catalysts. Reversibly bound H 2 S blocks active sites of HDS. The most important reaction pathway leads to but‐1‐ene; more Co gives more but‐2‐ene. The hydrogenation of buta‐1, 3‐diene is about 100 times more rapid than that of but‐1‐ene. The activity of two neighboring sites with twofold coordinative unsaturation is suggested in buta‐1, 3‐diene hydrogenation. The possible effect of Al 2 0 3 support on active sites is discussed.