稻壳灰制备TiO<sub>2</sub>-SiO<sub>2</sub>复合载体脱硝催化材料

doi:10.11896/j.issn.1005-023X.2018.22.025

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Abstract In view of the high content of amorphous silicon in the rice husk ash of agricultural waste, this paper used the rice husk ash as the raw material to prepare the denitrification catalytic materials with the TiO₂-SiO₂ composites as the carrier and the manganese, cerium as the active component. The influence of SiO₂ addition on the microstructure of catalytic materials was investigated, and the denitrification mechanism of catalytic materials with different silicon content was analyzed. The experimental results showed that,compared with the catalytic materials with pure TiO₂ as the carrier, the particle size of the catalyst materials with TiO₂-SiO₂ composites as the carrier is uniform and piling up in a fluffy state. The specific surface area and pore volume of catalytic mate-rials have increased, and the number of weak acid sites has also been greatly improved. When the molar ratio of silicon to titanium is 4∶1, the denitration efficiency can reach more than 90%.

Key words： rice husk ash SCR TiO₂-SiO₂ composites denitrification

Published: 21 December 2018

CLC number:

X511

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	Articles by authors
	MA Xiaoyu
	LIANG Yu
	CUI Suping
	WANG Zhihong
	WANG Yali

Cite this article:

MA Xiaoyu,LIANG Yu,CUI Suping, et al. Preparation of Denitrification Catalytic Materials Using TiO₂-SiO₂ Composites as Carrier by Rice Husk Ash[J]. Materials Reports, 2018, 32(22): 3984-3988.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2018.22.025 OR http://www.mater-rep.com/EN/Y2018/V32/I22/3984

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