许庄钦,刘明华,林剑涛.可见光下钙钛矿协同过硫酸盐固固氧化解聚玉米芯酶解木质素的研究[J].中国造纸学报,2022,37(3):37-44 |
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可见光下钙钛矿协同过硫酸盐固固氧化解聚玉米芯酶解木质素的研究 |
Solid-Solid Oxidative Depolymerization of Corncob Enzymatic Lignin by Synergism of Perovskite and Persulfate under Visible Light |
投稿时间:2021-10-23 |
DOI:10.11981/j.issn.1000-6842.2022.03.37 |
中文关键词: 钙钛矿 过硫酸钠 协同作用 木质素 氧化解聚 |
Key Words:perovskite sodium persulfate synergism lignin oxidation depolymerization |
基金项目:区域发展项目(2020N3005);福建省高校产学合作项目(2019H6008);2021年省级科技创新重点项目(2021G02001)。 |
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中文摘要: |
通过溶胶凝胶法制得镧系钙钛矿催化剂(LaFe0.9Ni0.1O3),探讨在常温常压及可见光照射条件下,LaFe0.9Ni0.1O3协同过硫酸钠固固氧化解聚玉米芯酶解木质素的效果。结果表明,LaFe0.9Ni0.1O3通过活化过硫酸钠可产生SO4-·,实现木质素中β-醚键与甲氧基的断裂,转化率比仅光照组提高近2倍,解聚得到香兰素、丁香醛等小分子化合物,有利于进一步研究木质素的定向氧化解聚。 |
Abstract: |
Lanthanide perovskite catalyst (LaFe0.9Ni0.1O3) was prepared by sol-gel method, and effect of solid-solid oxidative depolymerization of corncob enzymatic lignin by synergism of LaFe0.9Ni0.1O3 and persulfate under NPT and visible light conditions was explored. The results showed that SO4-· was produced by LaFe0.9Ni0.1O3 activating sodium persulfate, resulting in the breakage of the β-ether bond and the methoxy group of lignin, G-type products such as vanillin and syringaldehyde were obtained during this process and the conversion ratio of lignin was nearly 2 times higher than that of the light-depolymerization group. At the same time, LaFe0.9Ni0.1O3 induced to produce small molecule compounds, which is beneficial to further study of the oriented oxidative degradation of lignin. |
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