Magnetic iron-based catalyst for selective catalytic reduction denitrification and preparation method thereof

• Main Authors: XIONG ZHIBO, YU ZHIHAO, HE JUNFEI, JIN JING, ZHOU TAOTAO, WANG WEI, LI ZHENZHUANG, NING XING, GUO FUCHENG, QU XIAOKE, SHEN HAN, XIANG BOCHAO, LI CHENGXU, QIAO YUQING
• Format: Patent
• Language: Chinese; English
• Published: 20.12.2019
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention provides a magnetic iron-based catalyst for selective catalytic reduction denitrification and a preparation method thereof, and belongs to the field of iron-based metal catalysts. The provided magnetic iron-based catalyst for selective catalytic reduction denitrification comprises: a magnetic iron oxide supported with tungsten oxide. The preparation method of the magnetic iron-basedcatalyst for selective catalytic reduction denitrification comprises the following steps: step 1, dissolving a tungsten salt and an organic acid into water, and performing stirring to obtain a tungsten salt solution; step 2, adding a magnetic iron oxide into the tungsten salt solution, and performing stirring and drying to obtain a catalyst precursor; and step 3, performing calcination activationon the catalyst precursor in an air atmosphere to obtain the catalyst. The provided catalyst can significantly inhibit growth of gamma-Fe2O3 crystals and refine a catalyst particle size, and dispersion of active species is imp