The effects of temperature and hydrogen on glycerol adsorption on ruthenium metal

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Interactions between substrate molecules and the metal catalyst surface were studied to understand the mechanism of aqueous hydrogenolysis of glycerol over noble metals. Efforts to quantify the effects of temperature and adsorbed hydrogen on glycerol (GO) adsorption on ruthenium metal were elucidated. GO did not adsorb in the presence of hydrogen, suggesting exclusion of glycerol from the surface by adsorbed hydrogen. Hydrogen at elevated temperatures would remove adsorbed species in the form of methane. At 80°C the addition of hydrogen stopped the adsorption of GO and all the adsorbed carbon was converted to methane, while at 200°C all adsorbed and solution species were converted to methane with a carbon recovery of > 90%. The quantities of polyols adsorbed were significantly less, on a molar basis, than those obtained from gas-phase chemisorption of H2 and CO, suggesting multiple substrate-metal contact points. This is an abstract of a paper presented at the 2006 AIChE Annual Meeting (San Francisco, CA 11/12-17/2006).

LanguageEnglish (US)
Title of host publicationAIChE Annual Meeting, Conference Proceedings
StatePublished - 2006
Event2006 AIChE Annual Meeting - San Francisco, CA, United States
Duration: Nov 12 2006Nov 17 2006

Other

Other2006 AIChE Annual Meeting
CountryUnited States
CitySan Francisco, CA
Period11/12/0611/17/06

Profile

Ruthenium
Glycerol
Adsorption
Hydrogen
Metals
Methane
Temperature
Carbon
Hydrogenolysis
San Francisco
Polyols
Point contacts
Substrates
Carbon Monoxide
Chemisorption
Precious metals
Gases
Recovery
Catalysts
Molecules

ASJC Scopus subject areas

  • Biotechnology
  • Chemical Engineering(all)
  • Bioengineering
  • Safety, Risk, Reliability and Quality

Cite this

The effects of temperature and hydrogen on glycerol adsorption on ruthenium metal. / Peereboom, Lars; Jackson, J. E.; Miller, Dennis J.

AIChE Annual Meeting, Conference Proceedings. 2006.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Peereboom, L, Jackson, JE & Miller, DJ 2006, The effects of temperature and hydrogen on glycerol adsorption on ruthenium metal. in AIChE Annual Meeting, Conference Proceedings. 2006 AIChE Annual Meeting, San Francisco, CA, United States, 11/12/06.
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AB - Interactions between substrate molecules and the metal catalyst surface were studied to understand the mechanism of aqueous hydrogenolysis of glycerol over noble metals. Efforts to quantify the effects of temperature and adsorbed hydrogen on glycerol (GO) adsorption on ruthenium metal were elucidated. GO did not adsorb in the presence of hydrogen, suggesting exclusion of glycerol from the surface by adsorbed hydrogen. Hydrogen at elevated temperatures would remove adsorbed species in the form of methane. At 80°C the addition of hydrogen stopped the adsorption of GO and all the adsorbed carbon was converted to methane, while at 200°C all adsorbed and solution species were converted to methane with a carbon recovery of > 90%. The quantities of polyols adsorbed were significantly less, on a molar basis, than those obtained from gas-phase chemisorption of H2 and CO, suggesting multiple substrate-metal contact points. This is an abstract of a paper presented at the 2006 AIChE Annual Meeting (San Francisco, CA 11/12-17/2006).

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