| 摘要 |
PURPOSE:To efficiently denitrify gas contg. volatile metal compd. and NOx, by bringing the gas into contact with TiO2 having <=10000Angstrom mean pore diameter and >=50% the proportion of pore volume of pores having 400-5000Angstrom pore diameter to the total pore volume, in the presence of NH3. CONSTITUTION:The gas contg. the volatile metal compd. such as Se, As and NOx is brought into contact with a catalyst contg. TiO2 having <=10000Angstrom mean pore diameter and >=50% the proportion of pore volume of pores having 400-5000Angstrom pore diameter to the total pore volume, to undergo denitrification reaction. At that time, the TiO2 may be added with V, Mo, etc. When such catalyst is used, poisoning with the volatile metal compd. can be prevented and the denitrification can be efficiently carried out. |
