Honeycomb-shaped N2O removal catalyst and preparation method thereof

• Main Authors: SONG BING, NIE QINGHAI, ZHANG QIANSHUN, ZHANG YANDONG
• Format: Patent
• Language: Chinese; English
• Published: 11.06.2024
• 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 relates to the technical field of air pollution control, and discloses a honeycomb-shaped N2O removal catalyst and a preparation method thereof.A mesoporous molecular sieve is subjected to surface modification through 3-amine-propyltrimethoxysilane, an amine functional group is introduced, a bidentate or tridentate polymer is formed on the surface of the pore wall of the mesoporous molecular sieve, meanwhile, HCl is added for protonation, and the honeycomb-shaped N2O removal catalyst is obtained. Then, high-charge ammonium metavanadate and ammonium metamolybdate can be subjected to ion exchange reaction with chloride ions, so that the chloride ions are uniformly dispersed on the surface of the molecular sieve, the surface area of the mesoporous molecular sieve in the structure is relatively large, N2O is in full contact with the catalyst, the dosage of the catalyst is saved, and a good denitration effect can be achieved at low temperature and high space velocity; the phenomenon of pore channel b