Extruded iron-based molecular sieve denitration catalyst for vehicle and preparation method thereof
A denitration catalyst and molecular sieve technology, applied in the field of extruded iron-based molecular sieve denitration catalyst and its preparation, can solve the problems of easy plugging, insufficient firmness of molecular sieve and carrier, harsh preparation process conditions, etc.
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Embodiment 1
[0026] (1) Weigh the following components in parts by weight according to the following proportions: 100 parts of ZSM-5, 7 parts of talc, 2 parts of washed kaolin, 6 parts of calcined kaolin, 1 part of hydroxypropyl methylcellulose, stearic acid 2 parts, 1 part glass fiber, 4 parts polyethylene glycol, 2 parts lactic acid, 1 part iron source, appropriate amount of deionized water. Add molecular sieve, talc, washed kaolin and calcined kaolin into the mixer and mix evenly, then add hydroxypropyl methylcellulose, stearic acid, glass fiber and mix evenly, finally add polyethylene glycol, lactic acid, iron source, Knead with ionized water, and the kneaded mud will be stale for 24-48 hours. Put the stale mud in the vacuum mud refining machine for 2-3 times, put it into the molding machine and extrude it. The molded catalyst is dried by microwave After drying, it is put into a muffle furnace for firing (fire temperature 600-700° C.) to prepare an iron-based molecular sieve catalyst. ...
Embodiment 2
[0029] (1) Weigh the following components in parts by weight according to the following proportions: 100 parts of ZSM-5, 15 parts of talc, 6 parts of washed kaolin, 13 parts of calcined kaolin, 5 parts of hydroxypropyl methylcellulose, stearic acid 5 parts, glass fiber 5 parts, polyethylene glycol 5 parts, lactic acid 3 parts, iron source 2 parts, appropriate amount of deionized water. Add molecular sieve, talc, washed kaolin and calcined kaolin into the mixer and mix evenly, then add hydroxypropyl methylcellulose, stearic acid, glass fiber and mix evenly, finally add polyethylene glycol, lactic acid, iron source, Knead with ionized water, and the kneaded mud will be stale for 24-48 hours. Put the stale mud in the vacuum mud refining machine for 2-3 times, put it into the molding machine and extrude it. The molded catalyst is dried by microwave After drying, it is put into a muffle furnace for firing (fire temperature 600-700° C.) to prepare an iron-based molecular sieve catal...
Embodiment 3
[0032] (1) Weigh the following components in parts by weight according to the following proportions: 100 parts of ZSM-5, 10 parts of talc, 5 parts of washed kaolin, 10 parts of calcined kaolin, 3 parts of hydroxypropyl methylcellulose, stearic acid 4 parts, glass fiber 3 parts, polyethylene glycol 6 parts, lactic acid 5 parts, iron source 4 parts, appropriate amount of deionized water. Add molecular sieve, talc, washed kaolin and calcined kaolin into the mixer and mix evenly, then add hydroxypropyl methylcellulose, stearic acid, glass fiber and mix evenly, finally add polyethylene glycol, lactic acid, iron source, Knead with ionized water, and the kneaded mud will be stale for 24-48 hours. Put the stale mud in the vacuum mud refining machine for 2-3 times, put it into the molding machine and extrude it. The molded catalyst is dried by microwave After drying, it is put into a muffle furnace for firing (fire temperature 600-700° C.) to prepare an iron-based molecular sieve catal...
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