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

Xianhui Zhao; Devin M. Walker; Debtanu Maiti; Amanda D. Petrov; Matthew Kastelic; Babu Joseph; John N. Kuhn

doi:10.1021/acs.iecr.7b03669

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

Xianhui Zhao
, Devin M. Walker
, Debtanu Maiti
, Amanda D. Petrov
, Matthew Kastelic
, Babu Joseph
, John N. Kuhn

Research output: Contribution to journal › Article › peer-review

30 Scopus citations

Abstract

Cylindrical NiMg/Ce_0.6Zr_0.4O₂ pellet catalysts with two different sizes (large, radius = 1.59 mm; 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 pellets. 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 varied (0.35-1.16). The small catalyst pellets exhibited lower internal mass-transfer resistance and higher coking resistance compared to the large pellets. 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. The results indicate that the NiMg/Ce_0.6Zr_0.4O₂ catalyst pellets are promising for commercial scale applications.

Original language	English
Pages (from-to)	845-855
Number of pages	11
Journal	Industrial and Engineering Chemistry Research
Volume	57
Issue number	3
DOIs	https://doi.org/10.1021/acs.iecr.7b03669
State	Published - Jan 24 2018
Externally published	Yes

Access to Document

10.1021/acs.iecr.7b03669

Cite this

@article{8ec296b6e01f420f98ceb5e150b7e831,

title = "NiMg/Ceria-Zirconia Cylindrical Pellet Catalysts for Tri-reforming of Surrogate Biogas",

abstract = "Cylindrical NiMg/Ce0.6Zr0.4O2 pellet catalysts with two different sizes (large, radius = 1.59 mm; 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 pellets. 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 varied (0.35-1.16). The small catalyst pellets exhibited lower internal mass-transfer resistance and higher coking resistance compared to the large pellets. 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. The results indicate that the NiMg/Ce0.6Zr0.4O2 catalyst pellets are promising for commercial scale applications.",

author = "Xianhui Zhao and Walker, \{Devin M.\} and Debtanu Maiti and Petrov, \{Amanda D.\} and Matthew Kastelic and Babu Joseph and Kuhn, \{John N.\}",

note = "Publisher Copyright: {\textcopyright} 2017 American Chemical Society.",

year = "2018",

month = jan,

day = "24",

doi = "10.1021/acs.iecr.7b03669",

language = "English",

volume = "57",

pages = "845--855",

journal = "Industrial and Engineering Chemistry Research",

issn = "0888-5885",

publisher = "American Chemical Society",

number = "3",

}

TY - JOUR

T1 - NiMg/Ceria-Zirconia Cylindrical Pellet Catalysts for Tri-reforming of Surrogate Biogas

AU - Zhao, Xianhui

AU - Walker, Devin M.

AU - Maiti, Debtanu

AU - Petrov, Amanda D.

AU - Kastelic, Matthew

AU - Joseph, Babu

AU - Kuhn, John N.

PY - 2018/1/24

Y1 - 2018/1/24

N2 - Cylindrical NiMg/Ce0.6Zr0.4O2 pellet catalysts with two different sizes (large, radius = 1.59 mm; 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 pellets. 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 varied (0.35-1.16). The small catalyst pellets exhibited lower internal mass-transfer resistance and higher coking resistance compared to the large pellets. 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. The results indicate that the NiMg/Ce0.6Zr0.4O2 catalyst pellets are promising for commercial scale applications.

AB - Cylindrical NiMg/Ce0.6Zr0.4O2 pellet catalysts with two different sizes (large, radius = 1.59 mm; 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 pellets. 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 varied (0.35-1.16). The small catalyst pellets exhibited lower internal mass-transfer resistance and higher coking resistance compared to the large pellets. 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. The results indicate that the NiMg/Ce0.6Zr0.4O2 catalyst pellets are promising for commercial scale applications.

UR - https://www.scopus.com/pages/publications/85041214686

U2 - 10.1021/acs.iecr.7b03669

DO - 10.1021/acs.iecr.7b03669

M3 - Article

AN - SCOPUS:85041214686

SN - 0888-5885

VL - 57

SP - 845

EP - 855

JO - Industrial and Engineering Chemistry Research

JF - Industrial and Engineering Chemistry Research

IS - 3

ER -

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

Abstract

Access to Document

Other files and links

Fingerprint

Cite this