Premium
Influence of the Ir content and the support on the thiotolerance of the Ir/ SiO 2 ‐Al 2 O 3 catalysts for selective ring opening of decalin
Author(s) -
D'Ippolito Silvana A.,
Ballarini Adriana D.,
Rosas Santiago M.,
PiraultRoy Laurence,
Especel Catherine,
Epron Florence,
Pieck Carlos L.
Publication year - 2021
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.23930
Subject(s) - decalin , catalysis , hydrogenolysis , chemistry , dehydrogenation , metal , cyclopentane , ring (chemistry) , adsorption , content (measure theory) , inorganic chemistry , organic chemistry , mathematical analysis , mathematics
The influence of Ir content on sulphur tolerance for the selective ring opening of decalin was investigated. Ir/SiO 2 ‐Al 2 O 3 catalysts (70 wt% and 80 wt% SiO 2 ) were used. In the absence of sulphur, slight differences were observed on the yields according to the metallic content regardless of the support used. Although the results of cyclopentane hydrogenolysis showed that the metallic function acquires importance as the metal content increases, for these metal percentages the acid function limits the rate of decalin opening reaction. Products distribution are strongly modified using decalin with S content compared to pure decalin. The formation of dehydrogenated products is virtually null due to S adsorbed on the metal sites. The support has low influence on the thiotolerance. The results, related to the amount of S per Ir surface atom, showed that for a moderate S content (S/Ir surf ∼ 0.30), 1.5 Ir/Sy appears to be less poisoned than 1Ir/Sy and 2Ir/Sy.