TY - JOUR
T1 - Introducing attapulgite to prepare manganese-based monolithic catalyst for catalytic combustion of toluene
AU - Xia, Detao
AU - Zhang, Xi
AU - Tan, Bangjie
AU - Zhang, Pengfei
AU - Ren, Lingling
AU - Feng, Nengjie
AU - Wan, Hui
AU - Guan, Guofeng
N1 - Publisher Copyright:
© 2024 Elsevier Inc.
PY - 2024/10
Y1 - 2024/10
N2 - A series of attapulgite-loaded manganese oxides cordierite monolithic catalysts with different KMnO4/Mn(NO3)2 molar ratios (3:1, 1:1, and 1:3 for KMnO4/Mn(NO3)2, respectively) were prepared by a hydrothermal-ball mill impregnation method. According to the analysis of the characterization findings, the main active species of the catalyst was Mn4+ species. By incorporating acid-treated attapulgite (HATP) and adjusting the molar ratio of KMnO4/Mn(NO3)2, the content of Mn4+ and surface-adsorbed oxygen species on the catalyst surface increased, subsequently enhancing catalytic activity at low temperatures. Experimental results revealed that the Mn/HATP/cordierite catalyst with a KMnO4 to Mn(NO3)2 molar ratio of 3:1, Mn loading amount of 30 wt%, and active coating deposition of 250 g/L exhibited the highest catalytic activity, achieving a 90 % conversion of toluene at 298 °C (T90 = 298 °C, GHSV = 10000 h−1). These findings will provide valuable support for the design of highly efficient monolithic catalysts for toluene removal.
AB - A series of attapulgite-loaded manganese oxides cordierite monolithic catalysts with different KMnO4/Mn(NO3)2 molar ratios (3:1, 1:1, and 1:3 for KMnO4/Mn(NO3)2, respectively) were prepared by a hydrothermal-ball mill impregnation method. According to the analysis of the characterization findings, the main active species of the catalyst was Mn4+ species. By incorporating acid-treated attapulgite (HATP) and adjusting the molar ratio of KMnO4/Mn(NO3)2, the content of Mn4+ and surface-adsorbed oxygen species on the catalyst surface increased, subsequently enhancing catalytic activity at low temperatures. Experimental results revealed that the Mn/HATP/cordierite catalyst with a KMnO4 to Mn(NO3)2 molar ratio of 3:1, Mn loading amount of 30 wt%, and active coating deposition of 250 g/L exhibited the highest catalytic activity, achieving a 90 % conversion of toluene at 298 °C (T90 = 298 °C, GHSV = 10000 h−1). These findings will provide valuable support for the design of highly efficient monolithic catalysts for toluene removal.
KW - Attapulgite
KW - Catalytic combustion
KW - Manganese oxides
KW - Monolithic catalyst
KW - Toluene
UR - http://www.scopus.com/inward/record.url?scp=85198277869&partnerID=8YFLogxK
U2 - 10.1016/j.jssc.2024.124896
DO - 10.1016/j.jssc.2024.124896
M3 - 文章
AN - SCOPUS:85198277869
SN - 0022-4596
VL - 338
JO - Journal of Solid State Chemistry
JF - Journal of Solid State Chemistry
M1 - 124896
ER -