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Title: Tri-reforming of surrogate blogs over Ni/Mg/ceria-zirconia/alumina pellet catalysts

Journal Article · · Chemical Engineering Communications
 [1];  [1];  [2];  [1];  [1];  [1];  [1];  [3];  [3]
  1. Univ. of South Florida, Tampa, FL (United States). Dept. of Chemical & Biomedical Engineering
  2. T2C-Energy, LLC, Tampa, FL (United States)
  3. Univ. of South Florida, Tampa, FL (United States). Dept. of Chemical & Biomedical Engineering; T2C-Energy, LLC, Tampa, FL (United States)

The performance of catalytic tri-reforming under industrially relevant situations (e.g., pellet catalysts, pressurized reactor) was investigated using surrogate biogas as the feedstock. Tri-reforming using Ni/Mg/Ce0.6Zr0.4O2/Al2O3 pellet catalysts was studied in a bench scale fixed-bed reactor. The feed molar ratio for CH4: CO2: air was fixed as 1.0: 0.70: 0.95. The effects of temperature (800 – 860 °C), pressure (1 – 6 bar), and H2O/CH4 molar feed ratio (0.23 – 0.65) were examined. Pressure has substantial impact on the reaction and transport rates and equilibrium conversions, making it a key variable. At 860 °C, CO2 conversion increased from 4 to 61% and H2/CO molar ratio decreased from 2.0 to 1.1 as the pressure changed from 1 to 6 bar. CO2 conversion and H2/CO molar ratio were also influenced by the temperature and H2O/CH4 molar ratio. At 3 bar, CO2 conversion varied between 4 and 43% and the H2/CO molar ratio varied between 1.2 and 1.9 as the temperature changed from 800 to 860 °C. At 3 bar and 860 °C, CO2 conversion decreased from 35 to 8% and H2/CO molar ratio increased from 1.7 to 2.4 when the H2O/CH4 molar ratio was increased from 0.23 to 0.65. This work demonstrates that the tri-reforming technology is feasible for converting biogas under scaled-up conditions in a fixed-bed reactor.

Research Organization:
T2C-Energy, LLC, Tampa, FL (United States); Univ. of South Florida, Tampa, FL (United States)
Sponsoring Organization:
USDOE Office of Science (SC); T2C-Energy, LLC; Florida High Tech Corridor
Grant/Contract Number:
SC0015221
OSTI ID:
1417753
Journal Information:
Chemical Engineering Communications, Vol. 205, Issue 8; ISSN 0098-6445
Publisher:
Taylor & FrancisCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 7 works
Citation information provided by
Web of Science

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Cited By (3)

Thermodynamic modelling and optimization of oxy-reforming and oxy-steam reforming of biogas by RSM journal July 2019
Perovskites in the Energy Grid and CO2 Conversion: Current Context and Future Directions journal January 2020
Thermodynamic modelling and optimization of oxy-reforming and oxy-steam reforming of biogas by RSM text January 2019


Figures / Tables (9)


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