硫酸塩を用いた一酸化窒素のアンモニアによる接触還元
1976 年 1976 巻 12 号 p. 1947-1949
詳細
1976 年 1976 巻 12 号 p. 1947-1949
Catalytic reduction of NO with NH3 over various metal sulfates supported on alumina was studied in low (500, 1000 ppm) and high (150 mmHg) concentration ranges. The order of catalytic activity of the sulfates was almost the same for the two concentration ranges. No inhibition effect of SO2 was found for these catalyst. Contrary to this, the activity of iron oxide catalyst decreased by the treatment with SO2, which is probably due to irreversible change of iron oxide to iron sulfate. The products in the reaction of NO + NH3 over iron sulfatealumina, where NH3 was isotopically labelled ammonia, were NN and NNO, similarly to the result found for the reaction over iron oxide. This indicates that the reaction scheme proposed in the previous paper was valid for the sulfate catalysts.
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