초록 ▼

A catalyst for denitrizing nitrogen oxides contained in waste gases in the presence of arsenic compounds, which comprises: titanium and vanadium therein in weight ratios of oxides of titanium to oxides of vanadium ranging from 99.9:0.1 to 92.0:8.0, the vanadium being concentratedly contained in the

A catalyst for denitrizing nitrogen oxides contained in waste gases in the presence of arsenic compounds, which comprises: titanium and vanadium therein in weight ratios of oxides of titanium to oxides of vanadium ranging from 99.9:0.1 to 92.0:8.0, the vanadium being concentratedly contained in the surface layer of the catalyst up to 200 m

대표청구항 ▼

A catalyst for denitrizing nitrogen oxides contained in waste gases, which comprises: titanium and vanadium therein in weight ratios of oxides of titanium to oxides of vanadium ranging from 99.9:0.1 to 92.0:8.0, the vanadium being concentratedly contained in the surface layer of the catalyst up to 2

A catalyst for denitrizing nitrogen oxides contained in waste gases, which comprises: titanium and vanadium therein in weight ratios of oxides of titanium to oxides of vanadium ranging from 99.9:0.1 to 92.0:8.0, the vanadium being concentratedly contained in the surface layer of the catalyst up to 200 m1.5 times as much as the concentrations of vanadium throughout the catalyst, and the catalyst having micropores of about not less than about 50 Åin amounts of 0.25-0.40 ml/g, and micropores of about 50-100 Åin radius in amounts of about 10-40% by volume and micropores of about 1000-60,000 Åin radius in amounts of not less than about 10% by volume, respectively, based on the total volume of the micropores of not less than about 50 Åin radius.