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Research Papers

Microlith Supported Sulfur Tolerant Catalyst for Autothermal Reforming of E85 Fuel

[+] Author and Article Information
Tianli Zhu, Dennis Walsh, Joel DesJardins, Subir Roychoudhury

 Precision Combustion Inc., 410 Sackett Point Road, North Haven, CT 06473

Franklin H. Holcomb, Carl A. Feickert

U.S. Army Engineer Research & Development Center, Construction Engineering Research Laboratory, 2902 Newmark Drive, Champaign, IL 61822-1076

J. Fuel Cell Sci. Technol 7(5), 051002 (Jul 08, 2010) (8 pages) doi:10.1115/1.3005574 History: Received June 15, 2007; Revised March 07, 2008; Published July 08, 2010; Online July 08, 2010

Under a U.S. Army program, PCI has developed autothermal reforming catalysts for E85 to provide stable performance in the presence of fuel sulfur as well as corrosion inhibitors. The catalysts build on PCI’s Microlith™ catalyst technology and used PCI’s proprietary formulations. A stable performance was demonstrated through short-term testing (7080h) using high sulfur doped (100ppm) fuel. At 1.11 O:C and 1.25 S:C, nearly complete conversion and 70%+ reforming efficiency (LHV based) were achieved on stabilized catalysts in the presence of 20ppm feed sulfur. The effect of ceria addition into an alumina based support was also examined.

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Copyright © 2010 by American Society of Mechanical Engineers
Topics: Fuels , Catalysts , Sulfur , Ethanol
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Figures

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Figure 1

Physical characteristics of conventional monolith and microlith substrate, and CFD of boundary layer formation for a conventional monolith and three microlith screens

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Figure 2

Thermal response prediction of microlith versus ceramic monolith in a nonreacting gas at 350°C(23)

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Figure 3

Schematic of the E85 ATR catalyst screening test rig

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Figure 4

Microlith supported catalyst (Catalyst A) performance: E85 feed rate=1.48ml∕min, S:C=1.25, O:C=1.0, and inlet temperature=285°C

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Figure 5

Durability of microlith Catalysts A and B for E85 reforming: E85 feed rate=1.48ml∕min, S:C=1.25, O:C=1.11, feed sulfur=100ppm, inlet temperature=285°C. (a) (◼◻) Catalyst A, (◆◇) Catalyst B; (b) (◼◻×) Catalyst A, (▲△+) Catalyst B

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Figure 6

Effect of CeO2 or CeO2–ZrO2 addition on the performance of the alumina-based supported catalyst: (a) conversion and reforming efficiency, and (b) product selectivity

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Figure 7

Effect of S:C ratio on catalyst performance: (a) Catalyst A; (b) Catalyst B; O:C=1.0, tin=290°C; inlet fuel=1.48ml∕min; spec E85; and 100ppm sulfur

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Figure 8

Effect of O:C ratio on catalyst performance: (a) Catalyst A; (b) Catalyst B; S:C=1.25; tin=290°C; inlet fuel=1.48ml∕min; spec E85; and 100ppm sulfur

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Figure 9

Effect of O:C ratio on catalyst selectivity on Catalyst A: S:C=1.25, tin=290°C, inlet fuel=1.48ml∕min, spec E85, and 100ppm sulfur

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