• 专利标题:   Preparing zeolite molecular sieve adsorption material involves placing zeolite molecular sieve and graphene in deionized water, drying, ball milling, adding inorganic acid, adding noble metal platinum, palladium and nitrate, drying zeolite molecular sieve carrier with catalyst, calcining and cooling.
  • 专利号:   CN115055162-A
  • 发明人:   YANG Y
  • 专利权人:   GUANGDONG HENGFENGLAN ENVIRONMENTAL ENG
  • 国际专利分类:   B01D053/04, B01D053/86, B01J020/20, B01J020/30
  • 专利详细信息:   CN115055162-A 16 Sep 2022 B01J-020/20 202302 Chinese
  • 申请详细信息:   CN115055162-A CN10704292 21 Jun 2022
  • 优先权号:   CN10704292

▎ 摘  要

NOVELTY - The method involves (i) placing the zeolite molecular sieve and graphene in the deionized water and placing in the high pressure kettle, stirring, drying, ball milling, adding inorganic acid into the reaction kettle, adding the mixture into the reaction kettle for filtering, washing and drying; (ii) adding agglomerant and plasticizer into the hydrothermal inorganic acid modified mixture, processing into strip shaped or spherical particles and heating to obtain zeolite molecular sieve carrier; (iii) dissolving copper/aluminum oxide in the deionized water, adding the noble metal platinum, palladium and nitrate into the deionized water, ball milling the mixed solution and adjusting the pH value, viscosity and solid content of the mixed solution; (iv) uniformly coating the catalyst coating slurry on the surface of the zeolite molecular sieve carrier and drying; and (v) drying the zeolite molecular sieve carrier with catalyst, transferring to the muffle furnace, calcining and cooling. USE - The method is useful for preparing zeolite molecular sieve adsorption material. ADVANTAGE - The material has good adsorption capacity and catalytic reduction ability, and can realize better treatment effect of waste gas. DETAILED DESCRIPTION - Preparing zeolite molecular sieve adsorption material comprises (i) placing the zeolite molecular sieve and graphene into 10-20 times of mass of the deionized water and placing in the high pressure kettle, stirring at 150-200℃, after filtering and drying, placing the dried mixture in the ball mill for ball milling for 60-70 minutes, adding inorganic acid with concentration of 10-12% into the reaction kettle, stirring at 25-35℃, adding the mixture into the reaction kettle for filtering, using deionized water washing and drying to obtain hydrothermal inorganic acid modified mixture; (ii) adding agglomerant and plasticizer in the hydrothermal inorganic acid modified mixture, processing into strip shaped or spherical particles by extruding or rolling ball forming method, and heating the strip-shaped or spherical particles in the protective gas for 400-550℃ at high for 60-120 minutes to obtain zeolite molecular sieve carrier; (iii) dissolving copper/aluminum oxide in the deionized water, adding the noble metal platinum, palladium and nitrate into the other to deionized water, after diluting two solutions are mixed to obtain mixed solution, adding the mixed solution is ball milled by ball mill, and adjusting the pH value of the mixed solution after ball milling, viscosity and solid content to obtain the catalyst coating slurry; (iv) uniformly coating the catalyst coating slurry on the surface of the zeolite molecular sieve carrier prepared in step (ii), and placing in the air for drying; and (v) placing the zeolite molecular sieve carrier with catalyst coating formed on the surface after drying in the oven to dry, transferring to the muffle furnace, calcining at 800-850℃ high temperature, and cooling to room temperature to obtain a zeolite molecular sieve absorbing material.