Preparation method of cerium-tin composite oxide SCR denitration catalyst and catalyst

• Main Authors: XIONG ZHIBO, HE JUNFEI, SHU YILEI, JIN JING, BAO SIJIA, WANG WEI, HE WEIFENG, LI ZHENZHUANG, NING XING, MO YAQI, GUO FUCHENG, QU XIAOKE, XIANG BOCHAO, QIAO YUQING, LI CHENGXU
• Format: Patent
• Language: Chinese; English
• Published: 19.05.2020
• 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 preparation method of a cerium-tin composite oxide SCR denitration catalyst and the catalyst. The method comprises the following steps of: 1, sequentially dissolving gelatin,soluble cerium salt and soluble tin salt in a proper amount of deionized water, continuously and magnetically stirring for a first preset time, and uniformly mixing to obtain a mixed solution, 2, magnetically stirring the mixed solution in a water bath at 40-80 DEG C, and evaporating and drying for a second preset time until the mixed solution is not stirred, so as to obtain cerium-based gelatin composite colloid, 3, putting the cerium-based gelatin composite colloid into a muffle furnace, and igniting for a third preset time at the temperature of 300-700 DEG C in an air atmosphere to obtain fluffy powder, 4, putting the fluffy powder into the muffle furnace, calcining and activating for a fourth preset time at a temperature of 400-600 DEG C in an air atmosphere to obtain the gelatin biological template cerium-tin