摘要
汽车尾气造成了严重的环境污染,目前处理汽车尾气污染的有效手段是利用三元催化净化器(TWCC)来促进尾气中的有害物质CO、碳氢化合物HC与NO_x的转化。作为第四代汽车尾气催化剂,三效催化剂(TWCs)已在世界上得到了广泛的认同,并已进行了深入的研究和开发。本文详细介绍了三效催化剂的组成、设计、开发及制备方法,并对三效催化剂的发展方向进行了展望。
The auto exhaust had caused serious environmental pollution,to remove the harmful materials in the automotive exhaust including the CO,HC and NOx,an effective method called as three-way catalytic converter(TWCC) had been applied.Three-way catalysis(TWCs) are the critical components of TWCC.As the forth-generation auto exhaust catalyst, TWCs involved a wide range of research and recognition in the world.This article elaborated the motor exhaust pollution and its control,describing the properties of TWCs consisting of main components,assistant agent,coating,carrier and its operating principle,preparation and the development of TWCs.
关键词
汽车尾气
三效催化剂
进展
auto exhaust
three-way catalysts
process
