SO2和NO2在白云母表面的非均相反应研究-岩石矿物学杂志-CSCIED科技核心评价数据库-手机版

SO₂和NO₂在白云母表面的非均相反应研究

Heterogeneous reactions of SO₂ and NO₂ on the surface of muscovite

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DOI	10.20086/j.cnki.yskw.2024.0415
刊名	岩石矿物学杂志 Acta Petrologica et Mineralogica
年，卷(期)	2024, 43(4)
作者	张星宇，董发勤*，郑飞，霍婷婷，周琳，余洁雨，赵方源，郭铭，李文金,
作者单位	1. 西南科技大学固体废物处理与资源化教育部重点实验室, 四川绵阳 621010; 2. 西南科技大学环境与资源学院, 四川绵阳 621010; 3. 西昌学院理学院, 四川西昌 615013; 4. 西南科技大学材料与化学学院, 四川绵阳 621010
摘要	白云母是大气中矿物气溶胶的重要组分之一,研究大气中常见气体在其表面的非均相反应,在一定程度上可揭示大气环境中化学反应过程。文章采用自制石英玻璃微型反应器研究了SO₂和NO₂在白云母颗粒物表面的非均相反应,并探讨了相对湿度(RH)及光照对该反应的影响。结果表明,白云母对SO₂和NO₂均有一定的吸附活性,有紫外光和无紫外光条件下,SO₂的反应产物分别以SO^2-₄和SO^2-₃为主,NO₂的产物均以NO^-₃为主;RH或者紫外光照对反应均具有促进作用,两者对硫酸盐和硝酸盐的生成有协同效应;当SO₂和NO₂在白云母表面共存时,既有协同作用又存在竞争反应,SO^2-₄和NO^-₃的生成量分别是SO₂、NO₂单独存在的2.09倍和77%。因此,NO₂能促进硫酸盐的生成,但SO₂对硝酸盐的生成有明显抑制作用。
Abstract	Muscovite is the important component of mineral aerosols in the atmosphere. The researches for heterogeneous reactions of common gases in the atmosphere on the surface of muscovite will reveal the chemical reaction process in the atmosphere to a certain extent. In this study, the heterogeneous reaction of SO₂ and NO₂ on the surface of muscovite particles was investigated by a self-made quartz glass microreactor, and the effects of relative humidity (RH) and light on the reaction were also discussed. The results showed that muscovite has certain adsorption activity for both SO₂ and NO₂. The products in SO₂ reaction with and without ultraviolet irradiation were mainly salt compounds containing SO^2-₄ and SO^2-₃, respectively, while the products in NO₂ reaction were always mainly salt compounds containing NO^-₃. The increase of RH or ultraviolet light had a promoting effect on the reaction, and they had a synergistic effect on the formation of sulfate and nitrate. When SO₂ and NO₂ coexist on the surface of muscovite, there were both synergistic effect and competitive effect, and the generation amount of SO^2-₄ and NO^-₃ was 2.09 times and 77% of that in the presence of a single gas, respectively. Therefore, NO₂ promoted the formation of sulfate, but SO₂ had a significant inhibitory effect on the formation of nitrate.
关键词	SO₂；NO₂；白云母；非均相反应
KeyWord	SO₂; NO₂; muscovite; heterogeneous reaction
基金项目
页码	994-1004

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张星宇，董发勤*，郑飞，霍婷婷，周琳，余洁雨，赵方源，郭铭，李文金. SO₂和NO₂在白云母表面的非均相反应研究 [J]. 岩石矿物学杂志. 2024; 43; (4). 994 - 1004.

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