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

被引：26

作者：

Zhao, Xianhui ^{[1
]}

Walker, Devin M. ^{[2
]}

Maiti, Debtanu ^{[1
]}

Petrov, Amanda D. ^{[1
]}

Kastelic, Matthew ^{[1
]}

Joseph, Babu ^{[1
,2
]}

Kuhn, John N. ^{[1
,2
]}

机构：

[1] Univ S Florida, Dept Chem & Biomed Engn, Tampa, FL 33620 USA

[2] T2C Energy LLC, 3802 Spectrum Blvd,Suite 128p, Tampa, FL 33612 USA

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2018年 / 57卷 / 03期

关键词：

CARBON-DIOXIDE; HYDROGEN-PRODUCTION; SYNGAS PRODUCTION; SYNTHESIS GAS; METAL-OXIDES; NI CATALYST; METHANE; STEAM; CERIA; CO;

D O I：

10.1021/acs.iecr.7b03669

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

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 degrees 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 H-2/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.

引用

页码：845 / 855

页数：11

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