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醋酸钾对烟草热解产酚特性的影响

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为探究醋酸钾(CH3COOK)对废次烟草热解产酚特性的影响及其因素,考察了不同钾盐对废次烟草热解生成典型酚类化合物的影响,并分析CH3COOK对不同蛋白质、纤维素和木质素含量的生物质热解产酚特性的影响.结果表明:废次烟草负载CH3COOK的负载量为5%时,相比于无负载的废次烟草,CH3COOK可显著降低烟草热解产物中苯酚及邻苯二酚占比,提升对苯二酚占比,其中苯酚下降45.63%,邻苯二酚下降67.88%,对苯二酚上升32.80%.CH3 COOK可使高蛋白质含量的烟草、桑叶和银杏叶热解产物中苯酚和邻苯二酚占比降低,使低蛋白质、高纤维素、木质素含量的松木屑热解生成苯酚、邻苯二酚、愈创木酚占比提高.苯酚、对甲酚及邻苯二酚在烟草蛋白质热解生成物中占比较为显著,分别为19.99%、3.08%和2.69%,负载CH3COOK后,热解产物中苯酚和对甲酚占比分别降低了 77.09%和79.37%,且未检测到邻苯二酚.CH3COOK主要通过抑制烟草中蛋白质热解生成苯酚和邻苯二酚来降低烟草热解产物中相应酚的占比.
Effect of CH3COOK on the Phenols Production Characteristics of Tobacco Pyrolysis
In order to investigate the effect of CH3 COOK on the phenols production characteristics of waste tobacco pyrolysis and its influencing factors,the effect of different potassium salts on the generation of typical phenolic compounds from the pyrolysis of waste tobacco was investigated.The effect of CH3 COOK on the phenols production characteristics of biomasses pyrolysis with different protein,cellulose,and lignin contents was also analyzed.The results showed that at a loading amount of 5.00%,compared to the unloaded spent secondary tobacco,CH3COOK could significantly reduce the phenol and catechol percentage and enhance the hydroquinone percentage in the tobacco pyrolysis products.Among them,phenol decreased by 45.63%,catechol decreased by 67.88%,and hydroquinone increased by 32.80%.CH3COOK could decrease the proportion of phenol and catechol in the pyrolysis products of tobacco,mulberry leaf and ginkgo biloba with high protein content,and increase the percentage of phenol,catechol,and guaiacol produced by the pyrolysis of pine chips with low protein and high cellulosic lignin.The significant percentage of phenol,p-cresol,and catechol in the pyrolysis products of tobacco proteins was 19.99%,3.08%,and 2.69%,respectively.After loading CH3COOK,the proportions of phenol andp-cresol in pyrolysis products were reduced by 77.09%and 79.37%,respectively,and no catechol was detected.CH3COOK mainly reduced the percentage of corresponding phenols in tobacco pyrolysis products by inhibiting the pyrolysis of proteins to produce phenol and catechol in tobacco.

potassium acetatetobacco wastepyrolysisphenolic compoundsproteinmain control factor

贝书源、武荣成、鹿洪亮、赵大伟、陆鹏飞

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沈阳化工大学化学工程学院,辽宁沈阳 110142

中国科学院过程工程研究所多相复杂系统国家重点实验室,北京 100190

福建中烟工业有限责任公司技术中心,福建厦门 361021

醋酸钾 废次烟草 热解 酚类化合物 蛋白质 主控因素

国家自然科学基金

U1908201

2024

生物质化学工程
中国林业科学研究院林产化学工业研究所

生物质化学工程

CSTPCD
影响因子:0.622
ISSN:1673-5854
年,卷(期):2024.58(1)
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