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Hydrogenolysis of Glycerol over γ-Al2O3-Supported Iridium Catalyst

Ahmed, Tamer S.; Abdelaziz, Omar Y. LU and Roberts, George W. (2017) In Periodica Polytechnica Chemical Engineering 61(4). p.295-300
Abstract
In recent years, much attention has been focused on the hydrogenolysis of biodiesel derived glycerol to other high value products for the sustainable development and efficient valorization strategies. In the present work, alumina-supported Ir catalyst was prepared by the incipient wetness impregnation method and tested in the glycerol hydrogenolysis reaction. The synthesized catalyst was characterized by neutron activation analysis, N2 physisorption, and H2 chemisorption techniques. The experiments standard conditions were 150 mL feed volume, 0.3 g catalyst, 1500 rpm stirring speed, and 5 wt% glycerol aqueous solution for 4 h. The effects of catalyst amount, temperature, hydrogen pressure, stirring speed, and solution pH on glycerol... (More)
In recent years, much attention has been focused on the hydrogenolysis of biodiesel derived glycerol to other high value products for the sustainable development and efficient valorization strategies. In the present work, alumina-supported Ir catalyst was prepared by the incipient wetness impregnation method and tested in the glycerol hydrogenolysis reaction. The synthesized catalyst was characterized by neutron activation analysis, N2 physisorption, and H2 chemisorption techniques. The experiments standard conditions were 150 mL feed volume, 0.3 g catalyst, 1500 rpm stirring speed, and 5 wt% glycerol aqueous solution for 4 h. The effects of catalyst amount, temperature, hydrogen pressure, stirring speed, and solution pH on glycerol conversion and selectivity of the principal products obtained were also investigated. The glycerol conversion and the 1,2-propanediol selectivity varied from 4.9% to 22% and from 23.8% to 70.3%, respectively. It was found that the selectivity of 1,2-propanediol increased significantly with the increased alkalinity of the reaction medium. (Less)
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author
publishing date
type
Contribution to journal
publication status
published
subject
in
Periodica Polytechnica Chemical Engineering
volume
61
issue
4
pages
6 pages
publisher
Budapest University of Technology and Economics
external identifiers
  • scopus:85036453939
ISSN
1587-3765
DOI
10.3311/PPch.9872
language
English
LU publication?
no
id
219779bf-8553-4435-afcb-6b18bd66ea16
date added to LUP
2017-07-04 17:20:44
date last changed
2018-01-07 12:10:40
@article{219779bf-8553-4435-afcb-6b18bd66ea16,
  abstract     = {In recent years, much attention has been focused on the hydrogenolysis of biodiesel derived glycerol to other high value products for the sustainable development and efficient valorization strategies. In the present work, alumina-supported Ir catalyst was prepared by the incipient wetness impregnation method and tested in the glycerol hydrogenolysis reaction. The synthesized catalyst was characterized by neutron activation analysis, N2 physisorption, and H2 chemisorption techniques. The experiments standard conditions were 150 mL feed volume, 0.3 g catalyst, 1500 rpm stirring speed, and 5 wt% glycerol aqueous solution for 4 h. The effects of catalyst amount, temperature, hydrogen pressure, stirring speed, and solution pH on glycerol conversion and selectivity of the principal products obtained were also investigated. The glycerol conversion and the 1,2-propanediol selectivity varied from 4.9% to 22% and from 23.8% to 70.3%, respectively. It was found that the selectivity of 1,2-propanediol increased significantly with the increased alkalinity of the reaction medium.},
  author       = {Ahmed, Tamer S. and Abdelaziz, Omar Y. and Roberts, George W. },
  issn         = {1587-3765},
  language     = {eng},
  month        = {04},
  number       = {4},
  pages        = {295--300},
  publisher    = {Budapest University of Technology and Economics},
  series       = {Periodica Polytechnica Chemical Engineering},
  title        = {Hydrogenolysis of Glycerol over γ-Al2O3-Supported Iridium Catalyst},
  url          = {http://dx.doi.org/10.3311/PPch.9872},
  volume       = {61},
  year         = {2017},
}