• 专利标题:   Graphene-manganese oxide composite catalyst for low-temperature catalytic oxidation of formaldehyde in indoor environment, comprises graphene nanoplatelet and manganese oxide nanoplate supported on graphene nanoplatelet.
  • 专利号:   CN107754785-A
  • 发明人:   HE J, TIAN H, LU L
  • 专利权人:   TECH INST PHYSICS CHEM CHINESE ACAD
  • 国际专利分类:   B01D053/72, B01D053/86, B01J023/34, B01J035/02, B01J037/02, B01J037/16, B01J037/34
  • 专利详细信息:   CN107754785-A 06 Mar 2018 B01J-023/34 201824 Pages: 11 Chinese
  • 申请详细信息:   CN107754785-A CN10710919 23 Aug 2016
  • 优先权号:   CN10710919

▎ 摘  要

NOVELTY - A graphene-manganese oxide composite catalyst for low-temperature catalytic oxidation of formaldehyde, comprises graphene nanoplatelet and manganese oxide nanoplate supported on graphene nanoplatelet. USE - Graphene-manganese oxide composite catalyst for low-temperature catalytic oxidation of formaldehyde in indoor environment. ADVANTAGE - The graphene-manganese oxide composite catalyst is non-toxic and economical, and enables low-temperature catalytic oxidation of formaldehyde by simple process at low energy consumption. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) preparation method of graphene-manganese oxide composite catalyst for low-temperature catalytic oxidation of formaldehyde, involves (1) ultrasonically dispersing graphene oxide in deionized water for 10-60 minutes to obtain graphene oxide dispersion, transferring the graphite oxide dispersion to reactor, sealing and heating at 80-200 degrees C for 6-18 hours, centrifuging, washing and freeze drying to obtain graphene nanosheets, (2) mixing graphene nanosheets with potassium permanganate aqueous solution, stirring for 10-24 hours at room temperature, after the reaction is complete, washing, filtering and freeze drying; and (2) application of graphene-manganese oxide composite catalyst for low-temperature catalytic oxidation of formaldehyde, involves (1) adding graphene-manganese oxide complex catalyst to fixed-bed quartz reactor, (2) adding formaldehyde solution vapors and mixing to obtain gaseous formaldehyde, (3) heating the gaseous formaldehyde and graphene-manganese oxide composite catalyst at 30-200 degrees C, collecting the tail gas and testing.