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

Abstract

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/Ce 0.6Zr 0.4O 2/Al 2O 3 pellet catalysts was studied in a bench scale fixed-bed reactor. The feed molar ratio for CH 4: CO 2: air was fixed as 1.0: 0.70: 0.95. The effects of temperature (800 – 860 °C), pressure (1 – 6 bar), and H 2O/CH 4 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, CO 2 conversion increased from 4 to 61% and H 2/CO molar ratio decreased from 2.0 to 1.1 as the pressure changed from 1 to 6 bar. CO 2 conversion and H 2/CO molar ratio were also influenced by the temperature and H 2O/CH 4 molar ratio. At 3 bar, CO 2 conversion varied between 4 and 43% and the H 2/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, CO 2 conversion decreased from 35 to 8% and H 2/CO molar ratio increasedmore » from 1.7 to 2.4 when the H 2O/CH 4 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.« less

Authors:
 [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)
Publication Date:
Research Org.:
T2C-Energy, LLC, Tampa, FL (United States); Univ. of South Florida, Tampa, FL (United States)
Sponsoring Org.:
USDOE Office of Science (SC); T2C-Energy, LLC; Florida High Tech Corridor
OSTI Identifier:
1417753
Grant/Contract Number:  
SC0015221
Resource Type:
Accepted Manuscript
Journal Name:
Chemical Engineering Communications
Additional Journal Information:
Journal Volume: 205; Journal Issue: 8; Journal ID: ISSN 0098-6445
Publisher:
Taylor & Francis
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS; Catalyst; biogas; biomass; FTS; Reforming; Drop-in Renewable Fuel; TRIFTS

Citation Formats

Zhao, Xianhui, Ngo, Huong T., Walker, Devin M., Weber, David, Maiti, Debtanu, Cementer, Ummuhan, Petrov, Amanda D., Joseph, Babu, and Kuhn, John N. Tri-reforming of surrogate blogs over Ni/Mg/ceria-zirconia/alumina pellet catalysts. United States: N. p., 2018. Web. doi:10.1080/00986445.2018.1434162.
Zhao, Xianhui, Ngo, Huong T., Walker, Devin M., Weber, David, Maiti, Debtanu, Cementer, Ummuhan, Petrov, Amanda D., Joseph, Babu, & Kuhn, John N. Tri-reforming of surrogate blogs over Ni/Mg/ceria-zirconia/alumina pellet catalysts. United States. doi:10.1080/00986445.2018.1434162.
Zhao, Xianhui, Ngo, Huong T., Walker, Devin M., Weber, David, Maiti, Debtanu, Cementer, Ummuhan, Petrov, Amanda D., Joseph, Babu, and Kuhn, John N. Wed . "Tri-reforming of surrogate blogs over Ni/Mg/ceria-zirconia/alumina pellet catalysts". United States. doi:10.1080/00986445.2018.1434162. https://www.osti.gov/servlets/purl/1417753.
@article{osti_1417753,
title = {Tri-reforming of surrogate blogs over Ni/Mg/ceria-zirconia/alumina pellet catalysts},
author = {Zhao, Xianhui and Ngo, Huong T. and Walker, Devin M. and Weber, David and Maiti, Debtanu and Cementer, Ummuhan and Petrov, Amanda D. and Joseph, Babu and Kuhn, John N.},
abstractNote = {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.},
doi = {10.1080/00986445.2018.1434162},
journal = {Chemical Engineering Communications},
number = 8,
volume = 205,
place = {United States},
year = {2018},
month = {6}
}

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    Works referencing / citing this record:

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