H2O2/Se改性钒催化剂制备及催化氧化SO2性能研究

doi:10.3969/j.issn.1001-1803.2022.03.006

日用化学工业 ›› 2022, Vol. 52 ›› Issue (3): 263-269.doi: 10.3969/j.issn.1001-1803.2022.03.006

H₂O₂/Se改性钒催化剂制备及催化氧化SO₂性能研究

赵成忠¹,胡非非²,范鑫²,党威²,林倩^2,^*(),曹建新²,潘红艳^1,²

1.贵州轮胎股份有限公司,贵州贵阳 550000
2.贵州大学化学与化工学院,贵州贵阳 550025

收稿日期:2022-01-18 修回日期:2022-02-25 出版日期:2022-03-22 发布日期:2022-03-21
通讯作者: 林倩
基金资助:
国家自然科学基金资助项目(22068009);贵州省黔科合支撑项目([2018]2192)

Study on the performance of vanadium catalyst for the oxidation of SO₂ by modification of H₂O₂/Se

Zhao Chengzhong¹,Hu Feifei²,Fan Xin²,Dang Wei²,Lin Qian^2,^*(),Cao Jianxin²,Pan Hongyan^1,²

1. Guizhou Tyre Co., Ltd., Guiyang, Guizhou 550000, China
2. School of Chemistry and Chemical Engineering, Guizhou University, Guiyang, Guizhou 550025, China

Received:2022-01-18 Revised:2022-02-25 Online:2022-03-22 Published:2022-03-21
Contact: Qian Lin

摘要/Abstract

摘要：

提出了一种H₂O₂/Se改性钒催化剂制备的新方法。采用XRF、XRD、SEM、MIP和TG/DSC对催化剂进行表征分析,测定了催化剂催化氧化SO₂转化率,并与国产钒催化剂CHP-75和进口VK-38对比分析。结果表明,H₂O₂/Se改性钒催化剂V@10% H₂O₂-Se/SiO₂具有清晰的表面孔道、较大的孔容、较小的活性组分晶体尺寸和较低熔融相变温度,使其具有较高的催化氧化SO₂活性。该催化剂催化活性高于国产CHP-75,与进口VK-38媲美。高效钒催化剂的设计为国产钒催化剂替代国外进口催化剂提供了一种可能。

关键词: 复合改性, 钒催化剂, 低温活性

Abstract:

A new preparation method of H₂O₂/Se modified vanadium based catalysts was proposed in this paper. The catalysts were characterized by XRF, XRD, SEM, MIP and TG/DSC, and tested for catalytic oxidation of SO₂ to SO₃. And its activity was compared with that of the commercial catalysts CHP-75 and VK-38.Results show that the catalysts V-Se/SiO₂ and V@x H₂O₂-Se/SiO₂ have clear surface pores and small grain size of active components, which provide more active sites for SO₂ oxidation. Meanwhile, it also has lower melting transition temperature and more forms of molten state, which is conducive to improving their low temperature activity. Among them, the catalysts V@10% H₂O₂-Se/SiO₂has the highest activity for SO₂ oxidation due to its optimal pore structure, pore volume, active component nanoparticle size and melting transition temperature. And the catalytic activity of this catalyst is rival to the activity of VK-38 and much high than that of CHP-75. It offers a new thought and method for the design of the high efficiency vanadium catalyst.

Key words: compound modification, vanadium catalyst, low temperature activity

中图分类号:

TQ032

赵成忠,胡非非,范鑫,党威,林倩,曹建新,潘红艳. H₂O₂/Se改性钒催化剂制备及催化氧化SO₂性能研究[J]. 日用化学工业, 2022, 52(3): 263-269.

Zhao Chengzhong,Hu Feifei,Fan Xin,Dang Wei,Lin Qian,Cao Jianxin,Pan Hongyan. Study on the performance of vanadium catalyst for the oxidation of SO₂ by modification of H₂O₂/Se[J]. China Surfactant Detergent & Cosmetics, 2022, 52(3): 263-269.

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钒催化剂	主要成分及含量/%
钒催化剂	V₂O₅	SiO₂	K₂O	Na₂O	Al₂O₃	Fe₂O₃	SeO₂
CHP-75	8.99	65.21	10.41	1.21	2.30	0.936	—
VK-38	7.69	60.32	11.72	1.34	2.38	1.080	—
V-Se/SiO₂	7.81	60.12	11.99	1.24	2.19	1.51	0.032
V@10% H₂O₂-Se/SiO₂	7.67	60.19	11.85	1.37	2.39	1.63	0.032

催化剂	晶体尺寸/nm
催化剂	K₃Na（SO₄） ₂	K₃V（VO₄） ₂	K₃V（SO₄） ₃	（Na,K） ₂SO₄
CHP-75	40.0	43.0	54.4	43.3
VK-38	30.5	30.2	35.5	31.3
V-Se/SiO₂	34.7	33.6	41.1	35.0
V@5% H₂O₂-Se/SiO₂	26.8	25.7	28.0	24.6
V@10% H₂O₂-Se/SiO₂	29.6	30.4	35.2	30.9
V@20% H₂O₂-Se/SiO₂	29.8	29.9	35.4	30.6
V@30% H₂O₂-Se/SiO₂	35.5	33.4	36.9	34.5

H₂O₂/Se改性钒催化剂制备及催化氧化SO₂性能研究

Study on the performance of vanadium catalyst for the oxidation of SO₂ by modification of H₂O₂/Se

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