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Title: NiMg/Ceria-Zirconia Cylindrical Pellet Catalysts for Tri-reforming of Surrogate Biogas

Cylindrical NiMg/Ce 0.6Zr 0.4O 2 pellet catalysts with two different sizes (large: radius = 1.59 mm; and small: radius = 0.75 mm) were produced by extrusion of powder catalysts. The small catalyst pellets had a higher specific surface area, pore volume, average pore size, radial crush strength, and resistance to breakage than the large ones. Tri-reforming tests with surrogate biogas were conducted at 3 bar and 882 °C, with the feed molar ratios of CH 4: CO 2: air fixed at 1.0: 0.7: 0.95 and the H 2O/CH 4 molar feed ratio (0.35 – 1.16) varied. The small catalyst pellets exhibited lower internal mass transfer resistance and higher coking resistance, compared to the large ones. CO 2 conversion decreased and H 2/CO molar ratio increased with the increase of H 2O/CH 4 molar feed ratio, which are consistent with the trends predicted by thermodynamic equilibrium calculations. Finally, the results indicate that the NiMg/Ce 0.6Zr 0.4O 2 catalyst pellets are promising for commercial scale applications.
Authors:
 [1] ;  [2] ;  [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:
Grant/Contract Number:
SC0015221
Type:
Accepted Manuscript
Journal Name:
Industrial and Engineering Chemistry Research
Additional Journal Information:
Journal Volume: 57; Journal Issue: 3; Journal ID: ISSN 0888-5885
Publisher:
American Chemical Society (ACS)
Research Org:
T2C-Energy, LLC, Tampa, FL (United States); Univ. of South Florida, Tampa, FL (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS; Biogas; FTS; Reforming; Biomass; Drop-in Renewable Fuel; Catalyst
OSTI Identifier:
1417752

Zhao, Xianhui, Walker, Devin, Maiti, Debtanu, Petrov, Amanda, Kastelic, Matthew, Joseph, Babu, and Kuhn, John. NiMg/Ceria-Zirconia Cylindrical Pellet Catalysts for Tri-reforming of Surrogate Biogas. United States: N. p., Web. doi:10.1021/acs.iecr.7b03669.
Zhao, Xianhui, Walker, Devin, Maiti, Debtanu, Petrov, Amanda, Kastelic, Matthew, Joseph, Babu, & Kuhn, John. NiMg/Ceria-Zirconia Cylindrical Pellet Catalysts for Tri-reforming of Surrogate Biogas. United States. doi:10.1021/acs.iecr.7b03669.
Zhao, Xianhui, Walker, Devin, Maiti, Debtanu, Petrov, Amanda, Kastelic, Matthew, Joseph, Babu, and Kuhn, John. 2017. "NiMg/Ceria-Zirconia Cylindrical Pellet Catalysts for Tri-reforming of Surrogate Biogas". United States. doi:10.1021/acs.iecr.7b03669.
@article{osti_1417752,
title = {NiMg/Ceria-Zirconia Cylindrical Pellet Catalysts for Tri-reforming of Surrogate Biogas},
author = {Zhao, Xianhui and Walker, Devin and Maiti, Debtanu and Petrov, Amanda and Kastelic, Matthew and Joseph, Babu and Kuhn, John},
abstractNote = {Cylindrical NiMg/Ce0.6Zr0.4O2 pellet catalysts with two different sizes (large: radius = 1.59 mm; and small: radius = 0.75 mm) were produced by extrusion of powder catalysts. The small catalyst pellets had a higher specific surface area, pore volume, average pore size, radial crush strength, and resistance to breakage than the large ones. Tri-reforming tests with surrogate biogas were conducted at 3 bar and 882 °C, with the feed molar ratios of CH4: CO2: air fixed at 1.0: 0.7: 0.95 and the H2O/CH4 molar feed ratio (0.35 – 1.16) varied. The small catalyst pellets exhibited lower internal mass transfer resistance and higher coking resistance, compared to the large ones. CO2 conversion decreased and H2/CO molar ratio increased with the increase of H2O/CH4 molar feed ratio, which are consistent with the trends predicted by thermodynamic equilibrium calculations. Finally, the results indicate that the NiMg/Ce0.6Zr0.4O2 catalyst pellets are promising for commercial scale applications.},
doi = {10.1021/acs.iecr.7b03669},
journal = {Industrial and Engineering Chemistry Research},
number = 3,
volume = 57,
place = {United States},
year = {2017},
month = {12}
}