Synthesis of CuCe co-modified mesoporous ZSM-5 zeolite for the selective catalytic reduction of NO by NH3
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Mesoporous ZSM-5 zeolite (MZ) was used as support for Cu and Ce species, and the effects of structure and physical-chemical properties on selective catalytic reduction of NO with NH3 (NH3-SCR) were investigated. The characterization and experimental results show that the high activity of the Cu-Ce/MZ catalyst could be due to its high surface area, more and uniformly distributed active sites, and abundant oxidative species. Compared with the conventional ZSM-5 and SBA-15, the Cu-Ce/MZ possesses large amount of mesopores, and more accessible active sites, which are beneficial to accelerate the diffusion and improve the internal mass transfer in the denitration process. The Cu-Ce/MZ catalyst shows higher activity than Cu-Ce/ZSM-5 and Cu-Ce/SBA-15 at 200 °C.
KeywordsMesoporous ZSM-5 Selective catalytic reduction Surface area CuCe co-modified
This work has been supported by the National Natural Science Foundation of China (51708309), Heilongjiang Province (QC2017065), and the University Nursing Program for Young Scholars with Creative Talents in Heilongjiang Province (UNPYSCT-2018106).
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