Shibo Han , Xilai Yan , Han Han , Weijie Lin , Hongshen He , Jie Xie , Ajoy Kanti Mondal , Qiuxia Zou , Fang Huang
{"title":"研究不同 SiO2/Al2O3 比率对 Beta 沸石孔径和酸度的影响及其催化热解牛皮纸木质素的机理","authors":"Shibo Han , Xilai Yan , Han Han , Weijie Lin , Hongshen He , Jie Xie , Ajoy Kanti Mondal , Qiuxia Zou , Fang Huang","doi":"10.1016/j.jaap.2024.106730","DOIUrl":null,"url":null,"abstract":"<div><p>This study employed a one-step synthesis method to prepare Beta zeolites (BZs) with various SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> ratios and applied them as catalysts in the process of producing bio-oil from Kraft lignin (KL). The research investigated the changes in acidity and pore size of BZs under different SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> ratios and their impact on the catalytic pyrolysis products of KL. Characterization and a series of physicochemical analyses of BZ with different SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> ratios as well as catalytic pyrolysis products were carried out. The Pearson correlation coefficient was also used to correlate BZ SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> ratios and the acidity/pore size of BZ as well as the distribution of the products and the deoxygenation effect. The results indicate that BZs with different SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> ratios can effectively catalyze the upgrading of KL during pyrolysis. BZ with SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> ratios of 45 exhibited stronger acidity, a more prominent layered porous structure, and a more orderly distribution of mesopores. It showed the best catalytic upgrading effect on KL, achieving a product yield of 58.4 %. More prominently, the oxygen content is reduced to 14.19 % and the deoxygenation extent of the heavy oil reached 37.1 %.</p></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"183 ","pages":"Article 106730"},"PeriodicalIF":5.8000,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Study the implication of different SiO2/Al2O3 ratios on the pore size and acidity of Beta zeolite and its catalytic pyrolysis mechanism of Kraft lignin\",\"authors\":\"Shibo Han , Xilai Yan , Han Han , Weijie Lin , Hongshen He , Jie Xie , Ajoy Kanti Mondal , Qiuxia Zou , Fang Huang\",\"doi\":\"10.1016/j.jaap.2024.106730\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>This study employed a one-step synthesis method to prepare Beta zeolites (BZs) with various SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> ratios and applied them as catalysts in the process of producing bio-oil from Kraft lignin (KL). The research investigated the changes in acidity and pore size of BZs under different SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> ratios and their impact on the catalytic pyrolysis products of KL. Characterization and a series of physicochemical analyses of BZ with different SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> ratios as well as catalytic pyrolysis products were carried out. The Pearson correlation coefficient was also used to correlate BZ SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> ratios and the acidity/pore size of BZ as well as the distribution of the products and the deoxygenation effect. The results indicate that BZs with different SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> ratios can effectively catalyze the upgrading of KL during pyrolysis. BZ with SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> ratios of 45 exhibited stronger acidity, a more prominent layered porous structure, and a more orderly distribution of mesopores. It showed the best catalytic upgrading effect on KL, achieving a product yield of 58.4 %. More prominently, the oxygen content is reduced to 14.19 % and the deoxygenation extent of the heavy oil reached 37.1 %.</p></div>\",\"PeriodicalId\":345,\"journal\":{\"name\":\"Journal of Analytical and Applied Pyrolysis\",\"volume\":\"183 \",\"pages\":\"Article 106730\"},\"PeriodicalIF\":5.8000,\"publicationDate\":\"2024-09-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Analytical and Applied Pyrolysis\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0165237024003851\",\"RegionNum\":2,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, ANALYTICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Analytical and Applied Pyrolysis","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0165237024003851","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, ANALYTICAL","Score":null,"Total":0}
Study the implication of different SiO2/Al2O3 ratios on the pore size and acidity of Beta zeolite and its catalytic pyrolysis mechanism of Kraft lignin
This study employed a one-step synthesis method to prepare Beta zeolites (BZs) with various SiO2/Al2O3 ratios and applied them as catalysts in the process of producing bio-oil from Kraft lignin (KL). The research investigated the changes in acidity and pore size of BZs under different SiO2/Al2O3 ratios and their impact on the catalytic pyrolysis products of KL. Characterization and a series of physicochemical analyses of BZ with different SiO2/Al2O3 ratios as well as catalytic pyrolysis products were carried out. The Pearson correlation coefficient was also used to correlate BZ SiO2/Al2O3 ratios and the acidity/pore size of BZ as well as the distribution of the products and the deoxygenation effect. The results indicate that BZs with different SiO2/Al2O3 ratios can effectively catalyze the upgrading of KL during pyrolysis. BZ with SiO2/Al2O3 ratios of 45 exhibited stronger acidity, a more prominent layered porous structure, and a more orderly distribution of mesopores. It showed the best catalytic upgrading effect on KL, achieving a product yield of 58.4 %. More prominently, the oxygen content is reduced to 14.19 % and the deoxygenation extent of the heavy oil reached 37.1 %.
期刊介绍：
The Journal of Analytical and Applied Pyrolysis (JAAP) is devoted to the publication of papers dealing with innovative applications of pyrolysis processes, the characterization of products related to pyrolysis reactions, and investigations of reaction mechanism. To be considered by JAAP, a manuscript should present significant progress in these topics. The novelty must be satisfactorily argued in the cover letter. A manuscript with a cover letter to the editor not addressing the novelty is likely to be rejected without review.
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