甲烷完全催化氧化研究进展

孙晨, 赵昆峰, 易志国

Research Progress in Catalytic Total Oxidation of Methane

SUN Chen, ZHAO Kunfeng, YI Zhiguo

表1 甲烷完全热催化氧化催化剂的性能比较

Table 1 Comparison of properties of catalysts for total oxidation of methane by thermal catalysis

Catalyst Tc* /℃ Ea/(kJ·mol-1) Feed gas GHSV/(mL·g-1·h-1) Stability Ref. Pd-Ce@SiO2 T100=350 100.4 1% CH4, 21% O2, bal. N2 36000 25 h [39] Pd/TiO2 T99=370 83.1 1% CH4, 10% O2, bal. N2 30000 4 cycles [40] Pd/Na-MOR T50=335 75 1% CH4, 4% O2, bal. N2 70000 90 h [41] Pd-Pt/CeO2 T50=325 74 680 μg/mL CH4, 14% O2, 5% CO2, bal. N2 300000 12 h# [42] Au/Al2O3 T50=480 73 0.8% CH4, 3.2% O2, bal. He, 15000 / [32] Rh/ZrO2 T50=400 / 1% CH4, 2% O2, bal. He 15000 / [31] Ir/TiO2-H T50=267 55.5 1% CH4, 20% O2, bal. N2 30000 50 h [43] Ag/MnLaO3 T50=580 74 2% CH4, 98% air 12000 / [44] Pt/Cr2O3 T50=350 / 0.2% CH4, 10% O2, bal. N2 30000 / [30] MgO T50=225 / 1% CH4, 99% air 6000 70 h [45] LaCoO3 T50=470 / 0.8% CH4, 5% O2, bal. N2 60000 / [46] NiCo2O4 T100=350 / 5% CH4, 25% O2, bal. Ar 24000 48 h# [47] La0.6Sr0.4MnO3 T50=566 56.6 2% CH4, 20% O2, bal. N2 30000 / [48] CoAlOx/CeO2 T50=415 92.2 10% CH4, 25% O2, bal. Ar 24000 50 h [49]