The Effect of Barium Modification on the Sulfur Tolerance of Methane Catalytic Combustion over PdO/Al₂O₃ Catalysts

Abstract:

The sulfur tolerance over palladium supported on pure alumina and on alumina modified with barium of catalytic combustion of methane is investigated. Characterization of the catalysts is performed by, XRD and H₂-TPR techniques. Barium nitrate as the precursor to the formation of Ba(NO₂)₂ species can inhibit the SO₂ and SO₃ overflow from Al₂(SO₃)₃ and Al₂(SO₄)₃ sulfate to the adjacent PdO. Ba content on the performance of the catalyst resistance to sulfur poisoning has important implications. 0.7% Ba-1% Pd/Al₂O₃ catalyst resistance to sulfur poisoning property is close to that of high load capacity 5% Pd/Al₂O₃ catalyst.

• Periodical: Advanced Materials Research (Volumes 287-290)
• Pages: 1685-1690
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.287-290.1685
• Online since: July 2011
• Authors: Lei Ma, Ping Xie, Dian Qiao Lu, Chun Shan Lu, Qun Feng Zhang, Xiao Nian Li
• Keywords: Ba, Methane Combustion, Modification, Pd/Al₂O₃, Sulfur Tolerance

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