Mesoporous PHW-TiO2 Catalyst Application in Oxidative Desulfurization during Co-processing of MSS in Cement Kiln
QIN Xifeng
GUO Junyuan
WEN Xiaodong
CHEN Xueting
LI Haoxin
Abstract：Pollution of complex sulfur compounds is a pressing issue in the technology of co-processing municipal sewage sludge(MSS)in cement kilns.Mesoporous titanium dioxide(TiO2)catalysts loaded with phosphotungstic acid(HPW),referred to as mesoporous HPW-TiO2 catalysts,were prepared using polymer-directed self-assembly and impregnation methods,and their catalytic effects on sulfur compounds were characterized.The results indicate that,compared to the impregnation method,the polymer-directed self-assembly approach yields mesoporous HPW-TiO2 catalysts with larger specific surface areas and more acidic sites.At cement kiln preheater temperatures(200,260,320℃),the catalysts synthesized via the polymer-directed self-assembly method exhibit more efficient catalytic performance,effectively accelerating the oxidation conversion of aromatic-S and aliphatic-S organosulfur compounds in MSS into sulfoxides and sulfones.
Keywords：municipal sewage sludge(MSS)co-processing in cement kilnoxidative desulfurizationself-assemblymesoporous catalyst
Publication Date：2025-02-27
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 160-167 )