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Title: Activation, Deactivation and Reversibility in a Series of Homogeneous Iridium Dehydrogenation Catalysts

 [1];  [1]
  1. Yale Chemistry Department, 225 Prospect St New Haven, CT 06520-8107
Publication Date:
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
Grant/Contract Number:
FG02-84ER13297; SC0001298
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Israel Journal of Chemistry
Additional Journal Information:
Journal Volume: 57; Journal Issue: 10-11; Related Information: CHORUS Timestamp: 2017-12-01 07:56:23; Journal ID: ISSN 0021-2148
Wiley Blackwell (John Wiley & Sons)
Country of Publication:

Citation Formats

Sharninghausen, Liam S., and Crabtree, Robert H. Activation, Deactivation and Reversibility in a Series of Homogeneous Iridium Dehydrogenation Catalysts. Israel: N. p., 2017. Web. doi:10.1002/ijch.201700048.
Sharninghausen, Liam S., & Crabtree, Robert H. Activation, Deactivation and Reversibility in a Series of Homogeneous Iridium Dehydrogenation Catalysts. Israel. doi:10.1002/ijch.201700048.
Sharninghausen, Liam S., and Crabtree, Robert H. 2017. "Activation, Deactivation and Reversibility in a Series of Homogeneous Iridium Dehydrogenation Catalysts". Israel. doi:10.1002/ijch.201700048.
title = {Activation, Deactivation and Reversibility in a Series of Homogeneous Iridium Dehydrogenation Catalysts},
author = {Sharninghausen, Liam S. and Crabtree, Robert H.},
abstractNote = {},
doi = {10.1002/ijch.201700048},
journal = {Israel Journal of Chemistry},
number = 10-11,
volume = 57,
place = {Israel},
year = 2017,
month = 8

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on August 10, 2018
Publisher's Accepted Manuscript

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  • Carbon-supported iridium catalysts, with different metal loadings, were prepared by impregnation of a high-purity activated carbon. The dispersion of the metallic phase was studied by hydrogen and carbon monoxide chemisorption and transmission electron microscopy (TEM). The hydrogen chemisorption on the iridium crystallites supported on activated carbon was quite different from the chemisorption on an Ir/alumina catalyst. TEM observations of the catalysts show metal particles as spheres in the former case and as rafts in the latter. The cyclohexane dehydrogenation and the benzene hydrogenation were studied for both catalyst types. Both reactions are insensitive to the iridium dispersion and to themore » support. The thiotolerance level of the cyclohexane dehydrogenation, the thiotolerance level is affected neither by the support (activated carbon versus alumina) not by the metallic dispersion of the Ir/carbon catalysts. However, in the benzene hydrogenation the carbon-supported iridium catalysts are more resistant toward the poisoning than the Ir/alumina counterpart. This behavior is interpreted as due to the different metallic microstructures produced on the two supports.« less
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