Sulfur-tolerant and carbon-resistant bimetallic catalysts for steam reforming of liquid hydrocarbon fuels for fuel cells

Chunshan Song, James J. Strohm, Jian Zheng, Yan Li, Chao Xie, Yongsheng Chen, Xiaoxing Wang

Research output: Contribution to journalConference article

Abstract

This lecture discusses the recent advances in catalytic steam reforming of liquid fuels for fuel cell applications. Liquid hydrocarbon fuels are high-density fuels that are widely available for fuel cell applications, but the higher hydrocarbons can cause coke formation and the organic sulfur leads to sulfur poisoning of the catalysts. Thus a major challenge is to develop sulfur-tolerant and carbon-resistant catalysts for steam reforming of liquid hydrocarbon fuels at low-temperature for fuel cells. Rhodium catalysts are active for low-temperature steam reforming of hydrocarbons but are easily poisoned by sulfur. Nickel catalysts are widely used for natural gas reforming for hydrogen production but suffer from quick coking with higher hydrocarbon feeds. We have proposed a design concept for new bimetallic catalysts and conducted a series of experimental work coupled with analytical characterization. Loading ceria on alumina was found to improve the steam adsorption and activation and resist coke formation. Adding nickel to rhodium was found to improve catalytic activity for hydrocarbon activation and also protect rhodium from sulfur poisoning. These findings led to the development of sulfur-tolerant and carbon-resistant bimetallic catalysts supported on CeO2-modified Al2O3 support for fuel cells. More background information is available in recent publications [C.S. Song, Catal. Today 2002 (77) 17; J.J. Strohm at al., J. Catal. 2006, 238 (2) 309; Y. Li et al., Appl. Catal A: Gen. 2009 (357) 213]. Recent advances in our laboratory will be discussed on the sulfur-tolerant and carbon-resistant catalysts for low-temperature steam reforming of liquid hydrocarbon fuels. New spectroscopic study on the nature of sulfur species and carbon species on the used reforming catalysts will also be briefly described, which provides new insight on the origin of sulfur tolerance and carbon resistance of monometallic and bimetallic catalysts.

Original languageEnglish (US)
JournalACS National Meeting Book of Abstracts
StatePublished - Aug 25 2011
Event241st ACS National Meeting and Exposition - Anaheim, CA, United States
Duration: Mar 27 2011Mar 31 2011

Fingerprint

Steam reforming
Hydrocarbons
Sulfur
Fuel cells
Carbon
Catalysts
Liquids
Rhodium
Reforming reactions
Nickel
Catalyst supports
Coke
Chemical activation
Catalyst poisoning
Catalytic reforming
Aluminum Oxide
Cerium compounds
Coking
Liquid fuels
Steam

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

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title = "Sulfur-tolerant and carbon-resistant bimetallic catalysts for steam reforming of liquid hydrocarbon fuels for fuel cells",
abstract = "This lecture discusses the recent advances in catalytic steam reforming of liquid fuels for fuel cell applications. Liquid hydrocarbon fuels are high-density fuels that are widely available for fuel cell applications, but the higher hydrocarbons can cause coke formation and the organic sulfur leads to sulfur poisoning of the catalysts. Thus a major challenge is to develop sulfur-tolerant and carbon-resistant catalysts for steam reforming of liquid hydrocarbon fuels at low-temperature for fuel cells. Rhodium catalysts are active for low-temperature steam reforming of hydrocarbons but are easily poisoned by sulfur. Nickel catalysts are widely used for natural gas reforming for hydrogen production but suffer from quick coking with higher hydrocarbon feeds. We have proposed a design concept for new bimetallic catalysts and conducted a series of experimental work coupled with analytical characterization. Loading ceria on alumina was found to improve the steam adsorption and activation and resist coke formation. Adding nickel to rhodium was found to improve catalytic activity for hydrocarbon activation and also protect rhodium from sulfur poisoning. These findings led to the development of sulfur-tolerant and carbon-resistant bimetallic catalysts supported on CeO2-modified Al2O3 support for fuel cells. More background information is available in recent publications [C.S. Song, Catal. Today 2002 (77) 17; J.J. Strohm at al., J. Catal. 2006, 238 (2) 309; Y. Li et al., Appl. Catal A: Gen. 2009 (357) 213]. Recent advances in our laboratory will be discussed on the sulfur-tolerant and carbon-resistant catalysts for low-temperature steam reforming of liquid hydrocarbon fuels. New spectroscopic study on the nature of sulfur species and carbon species on the used reforming catalysts will also be briefly described, which provides new insight on the origin of sulfur tolerance and carbon resistance of monometallic and bimetallic catalysts.",
author = "Chunshan Song and Strohm, {James J.} and Jian Zheng and Yan Li and Chao Xie and Yongsheng Chen and Xiaoxing Wang",
year = "2011",
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journal = "ACS National Meeting Book of Abstracts",
issn = "0065-7727",
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Sulfur-tolerant and carbon-resistant bimetallic catalysts for steam reforming of liquid hydrocarbon fuels for fuel cells. / Song, Chunshan; Strohm, James J.; Zheng, Jian; Li, Yan; Xie, Chao; Chen, Yongsheng; Wang, Xiaoxing.

In: ACS National Meeting Book of Abstracts, 25.08.2011.

Research output: Contribution to journalConference article

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T1 - Sulfur-tolerant and carbon-resistant bimetallic catalysts for steam reforming of liquid hydrocarbon fuels for fuel cells

AU - Song, Chunshan

AU - Strohm, James J.

AU - Zheng, Jian

AU - Li, Yan

AU - Xie, Chao

AU - Chen, Yongsheng

AU - Wang, Xiaoxing

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N2 - This lecture discusses the recent advances in catalytic steam reforming of liquid fuels for fuel cell applications. Liquid hydrocarbon fuels are high-density fuels that are widely available for fuel cell applications, but the higher hydrocarbons can cause coke formation and the organic sulfur leads to sulfur poisoning of the catalysts. Thus a major challenge is to develop sulfur-tolerant and carbon-resistant catalysts for steam reforming of liquid hydrocarbon fuels at low-temperature for fuel cells. Rhodium catalysts are active for low-temperature steam reforming of hydrocarbons but are easily poisoned by sulfur. Nickel catalysts are widely used for natural gas reforming for hydrogen production but suffer from quick coking with higher hydrocarbon feeds. We have proposed a design concept for new bimetallic catalysts and conducted a series of experimental work coupled with analytical characterization. Loading ceria on alumina was found to improve the steam adsorption and activation and resist coke formation. Adding nickel to rhodium was found to improve catalytic activity for hydrocarbon activation and also protect rhodium from sulfur poisoning. These findings led to the development of sulfur-tolerant and carbon-resistant bimetallic catalysts supported on CeO2-modified Al2O3 support for fuel cells. More background information is available in recent publications [C.S. Song, Catal. Today 2002 (77) 17; J.J. Strohm at al., J. Catal. 2006, 238 (2) 309; Y. Li et al., Appl. Catal A: Gen. 2009 (357) 213]. Recent advances in our laboratory will be discussed on the sulfur-tolerant and carbon-resistant catalysts for low-temperature steam reforming of liquid hydrocarbon fuels. New spectroscopic study on the nature of sulfur species and carbon species on the used reforming catalysts will also be briefly described, which provides new insight on the origin of sulfur tolerance and carbon resistance of monometallic and bimetallic catalysts.

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