Platinum group metal capture material

Disclosed herein are platinum group metal capture materials comprising alkaline earth metal oxides. Catalytic articles including these platinum group metal capture materials, exhaust gas treatment systems, and methods of treating exhaust gas are also disclosed herein. Some embodiments of the present disclosure relate to gas treatment systems including means for oxidizing carbon monoxide and hydrocarbons, means for capturing volatilized platinum group metals, and means for selectively reducing nitrogen oxides. 本文公开了包含碱土金属氧化物的铂族金属捕获材料。本文还公开了包括这些铂族金属捕获材料的催化制品、废气处理系统和处理废气的方法。本公开的一些实施方案涉及气体处理系统，这些气体处理系统包括用于使一氧化碳氧化并且使烃氧化的构件、用于捕获挥发的铂族金属的构件和用于选择性地使氮氧化物还原的构件。