CTAB改性钒硅分子筛对CO-SCR低温催化脱硝性能的影响

doi:10.11868/j.issn.1001-4381.2020.001076

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Abstract To improve the NO-CO low-temperature selective catalytic reduction (SCR) denitration rate, finding new effective denitration catalysts has become the focus of the denitration field. A vanadium-substituted molecular sieve AM-6 was synthesized by hydrothermal method, the performance of AM-6 molecular sieve was improved by surfactant-assisted synthesis. The effect of different amounts of CTAB on the morphology, composition and the catalytic reduction performance was studied. These catalysts were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The results show that the addition of CTAB does not introduce other impurity elements. When the ratio of CTAB to V is 1:4, AM-6(1/4CTAB) has more regular surface morphology, better crystalline formability, well-balanced ratio of V⁵⁺/V⁴⁺,and the denitrification activity reaches 81.54% at 150℃, which is reduced by 50℃ than the temperature at which the denitrification activity of AM-6 reaches 80%.

Key words： vanadosilicate molecular sieve CATB selective catalytic reduction denitrification NO

Received: 19 November 2020 Published: 20 December 2021

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	Articles by authors
	HE Han-bing
	FU Guo-you
	ZHANG Li
	ZENG Jing
	WANG Yu-si
	LONG Hong-ming
	FAN You-qi
	ZHENG Ya-jie
	MA Ying

Cite this article:

HE Han-bing,FU Guo-you,ZHANG Li, et al. Effect of CO-SCR by CTAB modified vanadosilicate molecular sieve on low temperature catalytic denitrification[J]. Journal of Materials Engineering, 2021, 49(12): 115-122.

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http://jme.biam.ac.cn/EN/10.11868/j.issn.1001-4381.2020.001076 OR http://jme.biam.ac.cn/EN/Y2021/V49/I12/115

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