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AssigneeKunming University of Science and Technology
InventorsKai Li, Yaxi Zhang, Ping Ning, Chi Wang, Fei Wang, Xin Sun, Yixing Ma, Xin Song, Qian Li
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The present disclosure relates to the technical field of industrial waste gas purification, in particular to a core-shell structured catalyst, a preparation method and use thereof. The present disclosure provides a core-shell structured catalyst including a metal oxide-molecular sieve as a core and porous silica (SiO2) as a shell, where the metal oxide-molecular sieve includes a molecular sieve and a metal oxide loaded on the molecular sieve, the metal oxide includes an oxide of a first metal and an oxide of a second metal, the first metal is Fe, Cu, Ti, Ni or Mn, and the second metal is Ce or La. The core-shell structured catalyst of the present disclosure can enable effective removal of HCN and AsH3 at the same time with a stable effect, and no secondary pollution.
A core-shell structured catalyst for simultaneous removal of hydrogen cyanide (HCN) and arsine (AsH3) by means of catalytic hydrolysis-oxidation coupling, comprising a metal oxide-molecular sieve as a core and porous silica (SiO2) as a shell, wherein the metal oxide-molecular sieve comprises a molecular sieve and a metal oxide loaded on the molecular sieve, the metal oxide comprises an oxide of a first metal and an oxide of a second metal, the first metal is Fe, Cu, Ti, Ni or Mn, and the second metal is Ce or La.
Dependencies are inferred from the claim text.