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Reduction of SO2 by NH3 to Elemental Sulfur Over Transitional Metal Oxides Catalysts
Zhang Qinhui,Qin Yongning
Author NameAffiliationE-mail
Zhang Qinhui College of Chemical Engineering, Tianjin University 300072 zqh72@sina.com.cn 
Qin Yongning College of Chemical Engineering, Tianjin University 300072  
Abstract:
Mixed oxides, Ti02-MeOx (Me-V, Cr, Mn, Fe, Co, Ni, Cu) have shown high catalytic activity for the NH3 decomposition reaction and the reduction of SO2 by NH3 to elemental sulfur. Co3O4-TiO2 and Fe2O3-TiO2 catalysts show higher catalytic activity than other catalysts at low temperature. Characterization by XRD indicates that transition metal sulfides are probably the most active. The mechanism of the reduction of SO2 by NH3 to elemental sulfur over Ti02-MeOx (Me-V, Cr, Mn, Fe, Co, Ni, Cu) catalysts is assumed.
Key words:  Transitional metal oxides  Transitional metal sulfides  NH3  SO2  Elemental sulfur
FundProject:
过渡金属氧化物催化剂上NH3 分解Claus反应机理研究
张钦辉*,秦永宁
摘要:
运用浸渍法制备了七种过渡金属氧化物催化剂.对于NH3 分解反应均可获得很高的NH3转化率;对于NH3分解Claus反应则可以获得较高的SO2转化率和单质硫选择性.通过比较发现Co3O4-TiO2和Fe2O3-TiO2催化剂的低温活性比较高.经过XRD表征发现,在NH3分解Claus反应中,催化剂的活性相可能是过渡金属硫化物.结合活性评价和XRD表征结果提出了NH3分解Claus反应的机理.
关键词:  共沉淀法  过渡金属氧化物  过渡金属硫化物  NH3分解Claus反应
DOI:10.1088/1674-0068/15/1/46-50
分类号: