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Citation: Zhang Wen-Hua, Peng Jiang-Jie, Ma Yun-Sheng, Hao Li-Qing, Zhuang Shu-Xian. Catalytic Reduction of SO₂ by CO on Sulfided CoMo/ Al₂O₃-TiO₂ Catalysts[J]. Acta Physico-Chimica Sinica, ;2002, 18(10): 901-906. doi: 10.3866/PKU.WHXB20021007 shu

Catalytic Reduction of SO₂ by CO on Sulfided CoMo/ Al₂O₃-TiO₂ Catalysts

1.
Chemical Physics Department, University of Science and Technology of China, Hefei　230026

Received Date: 18 January 2002
Available Online: 15 October 2002

The catalytic reduction of SO2 by CO has been systematically investigated over the sulfided CoMo catalysts (4.0％CoO, 15.0％MoO3) supported on Al2O3, Al2O3-TiO2 and TiO2.The results show that CO and SO2 could be converted completely to CO2 and elemental sulfur at 350 ℃, 350～400 ℃ and 400 ℃ respectively on those catalysts mentioned above. Interestingly, two kind of mechanism, namely COS as intermediate and modified Redox mechanism, were found to perform simultaneously over the catalysts supported on TiO2 or Al2O3-TiO2 above 200 ℃,which greatly suppressed the COS production and resulted in a higher sulfur selectivity than that on the Al2O3-supported catalyst. The reaction mechanism was also discussed.
- CO-SO₂ reaction;Sulfided catalysts;Cobalt molybdenum catalyst;Al₂O₃-TiO₂ mixing support;　Synergistic effect
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沈阳化工大学材料科学与工程学院沈阳 110142

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Catalytic Reduction of SO2 by CO on Sulfided CoMo/ Al2O3-TiO2 Catalysts

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通讯作者: 陈斌, bchen63@163.com

Catalytic Reduction of SO₂ by CO on Sulfided CoMo/ Al₂O₃-TiO₂ Catalysts