ADSORBENT FOR EXHAUST GAS

摘要

An adsorbent for exhaust gas, produced by mixing an Fe-ZSM-5 containing base material obtained by Fe ion exchange of ZSM-5 having an Si/Al<SUB>2</SUB>O<SUB>3</SUB> molar ratio of 28(the number of moles of Si : the number of moles of Al<SUB>2</SUB>O<SUB>3</SUB> = 28:1) with an additive containing at least one member selected from among Y-zeolite having an Si/Al<SUB>2</SUB>O<SUB>3</SUB> molar ratio of 250, mordenite having an Si/Al<SUB>2</SUB>O<SUB>3</SUB> molar ratio of 200, and ß-zeolite having an Si/Al<SUB>2</SUB>O<SUB>3</SUB> molar ratio of 400. The adsorbent can effectively adsorb both hydrocarbons and nitrogen oxides simultaneously.