Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| Selective Production of Platform Chemicals from Low-Temperature Pyrolysis of Biomass Mediated by Exogenous Acid-Intrinsic Base Balance br | |
Yang, Xingwei1,2,3; Xia, Shengpeng1,2,3,4; Wang, Chenyang1,2,3; Zheng, Anqing1,2,3 ; Zhao, Zengli1,2,3
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| 2022-05-09 | |
| Source Publication | ACS SUSTAINABLE CHEMISTRY & ENGINEERING
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| ISSN | 2168-0485 |
| Volume | 10Issue:18Pages:5895-5910 |
| Corresponding Author | Zheng, Anqing(zhengaq@ms.giec.ac.cn) |
| Abstract | The catalytic activity of intrinsic alkali and alkaline earth metals (AAEM) in biomass has been usually considered as anegative factor affecting the fast pyrolysis of biomass. Herein, thisnegative factor was turned into a positive one using 0.4%H2SO4impregnation of pinewood, which can achieve the directionalpyrolysis of pinewood into levoglucosan at low temperatures.Pyrolysis of 0.4%H2SO4-impregnated pinewood at 300 degrees Cdrastically improved the yield of levoglucosan from 2.3 to 53.6%while suppressing the formation of small oxygenates, non-condensable gases, and char. The introduction of the desiredamount of exogenous H2SO4combined with intrinsic AAEM inraw biomass, namely, exogenous acid-intrinsic base balance, wasessential to achieve the directional pyrolysis of biomass at low temperatures to form levoglucosan. Exogenous H2SO4accounted forthe low-temperature activation of cellulose to form levoglucosan, while intrinsic AAEM were responsible for inhibiting thedehydration reactions to form levoglucosenone and char. Compared with the pyrolysis of raw pinewood at 500 degrees C, pyrolysis of 0.4%H2SO4-impregnated pinewood at 300 degrees C reduced the heat requirement by 78.5%. The kinetic analysis demonstrated that 0.4%H2SO4impregnation improved the activation energy for pyrolysis of pinewood. In situ DRIFT experiment combined with two-dimensional perturbation correlation infrared spectroscopy (2D-PCIS) analysis showed that H2SO4can achieve the low-temperatureactivation of cellulose within pinewood to form levoglucosan. AAEM can inhibit the intramolecular dehydration of the C3 hydroxylgroups and C2 hydrogen atoms in the levoglucosan end/levoglucosan to form levoglucosenone and char. Thisfinding provides asimple and energy-saving approach to achieve directional conversion of biomass into platform chemicals via low-temperature pyrolysis |
| Keyword | biomass pyrolysis pretreatment torrefaction pyrolysis mechanism directional pyrolysis |
| DOI | 10.1021/acssuschemeng.2c00131 |
| WOS Keyword | LIGNOCELLULOSIC BIOMASS ; CATALYTIC PYROLYSIS ; TORREFACTION ; CELLULOSE ; LEVOGLUCOSENONE ; VALORIZATION ; PRETREATMENT ; CHEMISTRY ; MECHANISM ; KINETICS |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Key R&D Program of China[2017YFE0124200] ; National Natural Science Foundation of China[51876208] ; National Natural Science Foundation of China[51776209] ; Major International (Regional) Joint Research Project of the National Science Foundation of China[51661145011] ; Youth Innovation Promotion Association, CAS[2018383] ; Pearl River S& T Nova Program of Guangzhou[201806010061] |
| WOS Research Area | Chemistry ; Science & Technology - Other Topics ; Engineering |
| Funding Organization | National Key R&D Program of China ; National Natural Science Foundation of China ; Major International (Regional) Joint Research Project of the National Science Foundation of China ; Youth Innovation Promotion Association, CAS ; Pearl River S& T Nova Program of Guangzhou |
| WOS Subject | Chemistry, Multidisciplinary ; Green & Sustainable Science & Technology ; Engineering, Chemical |
| WOS ID | WOS:000800521700020 |
| Publisher | AMER CHEMICAL SOC |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/36672 |
| Collection | 中国科学院广州能源研究所 |
| Corresponding Author | Zheng, Anqing |
| Affiliation | 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 2.CAS Key Lab Renewable Energy, Guangzhou 510640, Peoples R China 3.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| First Author Affilication | GuangZhou Institute of Energy Conversion,Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | Yang, Xingwei,Xia, Shengpeng,Wang, Chenyang,et al. Selective Production of Platform Chemicals from Low-Temperature Pyrolysis of Biomass Mediated by Exogenous Acid-Intrinsic Base Balance br[J]. ACS SUSTAINABLE CHEMISTRY & ENGINEERING,2022,10(18):5895-5910. |
| APA | Yang, Xingwei,Xia, Shengpeng,Wang, Chenyang,Zheng, Anqing,&Zhao, Zengli.(2022).Selective Production of Platform Chemicals from Low-Temperature Pyrolysis of Biomass Mediated by Exogenous Acid-Intrinsic Base Balance br.ACS SUSTAINABLE CHEMISTRY & ENGINEERING,10(18),5895-5910. |
| MLA | Yang, Xingwei,et al."Selective Production of Platform Chemicals from Low-Temperature Pyrolysis of Biomass Mediated by Exogenous Acid-Intrinsic Base Balance br".ACS SUSTAINABLE CHEMISTRY & ENGINEERING 10.18(2022):5895-5910. |
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