| 多级孔HZSM-5分子筛催化快速热解生物质制芳烃 |
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| 引用本文： | 马会霞,周峰,武光,傅杰,乔凯. 多级孔HZSM-5分子筛催化快速热解生物质制芳烃[J]. 化工学报, 2020, 71(11): 5200-5207. DOI: 10.11949/0438-1157.20200091 |
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| 作者姓名： | 马会霞 周峰 武光 傅杰 乔凯 |
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| 作者单位： | 1.中国石油化工股份有限公司大连石油化工研究院，辽宁 大连 116043;2.黑龙江大学化学化工与材料学院，黑龙江 哈尔滨 150080;3.浙江大学化学工程与生物工程学院生物质化工教育部重点实验室，浙江 杭州 310027 |
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| 摘 要： | 采用酸和/或碱处理法制备了一系列多级孔HZSM-5分子筛,采用XRD、N2吸附、XRF、TEM、27Al MAS NMR和NH3-TPD等表征手段对其孔道结构和酸性进行表征。表征结果表明,采用碱处理方法,可获得孔径集中于3～6 nm的介孔结构,通过改变酸、碱处理次序,可调变酸中心数量和强酸/总酸中心比例。在Py-GC/MS装置上,以纤维素和水稻秸秆为原料,研究多级孔分子筛结构对催化快速热解(CFP)制芳烃反应的影响。反应评价结果表明,同商品级HZSM-5相比,采用先碱后酸处理获得的多级孔HZSM-5分子筛(HZ-OH/H),可将纤维素CFP芳烃碳产率由32.3%提高至43.6%,可将水稻秸秆CFP芳烃碳产率由23.0%提高至30.8%。多级孔HZ-OH/H分子筛的孔道结构和酸中心分布特征,对开发应用于生物质制芳烃的高效工业催化剂具有借鉴意义。
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| 关 键 词： | 多级孔HZSM-5 催化 热解 生物质 芳烃 纤维素 秸秆 沸石 |
| 收稿时间： | 2020-01-21 |
Catalytic fast pyrolysis of biomass to aromatics over hierarchical HZSM-5 |
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| MA Huixia,ZHOU Feng,WU Guang,FU Jie,QIAO Kai. Catalytic fast pyrolysis of biomass to aromatics over hierarchical HZSM-5[J]. Journal of Chemical Industry and Engineering(China), 2020, 71(11): 5200-5207. DOI: 10.11949/0438-1157.20200091 |
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| Authors: | MA Huixia ZHOU Feng WU Guang FU Jie QIAO Kai |
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| Affiliation: | 1.Dalian Research Institute of Petroleum and Petrochemicals, SINOPEC, Dalian 116043, Liaoning, China;2.School of Chemistry and Materials Sciences, Heilongjiang University, Harbin 150080, Heilongjiang, China;3.Key Laboratory of Biomass Chemical Engineering, Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, Zhejiang, China |
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| Abstract: | A series of HZSM-5 molecular sieves with hierarchical porosity were prepared by acid and/or alkali treatments, and their pore structure and acidity were characterized by XRD, N2 adsorption, XRF, TEM, 27Al MAS NMR and NH3-TPD. The characterization results show that the alkali treatment method used in this paper can generate the mesoporous structure with a pore size concentrated at 3—6 nm. By changing the order of acid and alkali treatment, the number of acid centers and the ratio of strong acid to total acid center can be adjusted. In addition, the catalytic performance of the hierarchical porosity catalysts were studied for the catalytic fast pyrolysis (CFP) of cellulose and rice straw to aromatics on the Py-GC/MS. Compared with the commercial HZSM-5, the catalysts (HZ-OH/H) obtained by alkali first and then acid treatment can increase the aromatics carbon yield of cellulose CFP from 32.3 % to 43.6%, and same for rice straw from 23.0% to 30.8%. The pore structure and acid center distribution characteristics of the multi-stage HZ-OH/H molecular sieve have reference significance for the development of high-efficiency industrial catalysts applied to biomass to produce aromatics. |
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| Keywords: | hierarchical HZSM-5 catalysis pyrolysis biomass aromatics cellulose rice straw zeolite |
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