Abstract:

Research progress of selective catalytic reduction（SCR）of NO_x with noble metals，molecular sieves，carbon-based and metal oxides catalysts at a medium-low temperature is summarized，providing up-to-date information of catalysts for the catalytic denitrification of industrial kiln flue gas. This paper analyzes the characteristics of various catalysts，especially modification of catalyst，sulfur-tolerant，water-resistant catalysts and reaction mechanism. In order to apply SCR technology to industrial kiln flue gas denitrification，the outstanding performance of active components in catalystic activity at a medium-low temperature，sulfur-tolerance，water-resistance and so on should be made full use of. Modification of mature SCR catalyst with transition metal oxides to improve activity and anti-poisoning ability would have better research and development prospect.

摘要：

概述了国内外在中低温条件下开展的贵金属、分子筛、炭基及金属氧化物四大类选择性催化还原（SCR）催化剂的最新研究进展，为工业窑炉烟气催化脱硝提供催化剂研究前沿信息。分析了各类SCR催化剂的特点，特别是在改性、耐硫抗水及机理研究方面的工作。为了实现SCR技术在工业窑炉烟气中的应用，需充分利用各活性组分在中低温、耐硫、耐水等方面的突出性能，结合过渡金属氧化物对现有成熟SCR催化剂进行改性，提升中低温催化NO_x性能和抗中毒能力，将具有较好的研究和应用前景。