Mild Oxalic-Acid-Catalyzed Hydrolysis as a Novel Approach to Prepare Cellulose Nanocrystals
文献类型：期刊论文
| 作者 | Xu, Wenyang1; Grenman, Henrik2; Liu, Jun1; Kronlund, Dennis3; Li, Bin4 ; Backman, Peter5; Peltonen, Jouko3; Willfor, Stefan1; Sundberg, Anna1; Xu, Chunlin1
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| 刊名 | CHEMNANOMAT
 |
| 出版日期 | 2017-02-01 |
| 卷号 | 3期号:2页码:109-119 |
| 关键词 | acid hydrolysis biomaterials cellulose nanocrystals oxalic acid hydrolysis reaction kinetics |
| 英文摘要 | The traditional method to isolate cellulose nanocrystals (CNCs) is to subject cellulosic materials to strong acid hydrolysis by mineral acids, which usually causes problems such as corrosion of equipment, the need for large amounts of water, the difficulty of acid recovery, and over-degradation of cellulose. Thus, a green and sustainable approach for the preparation of CNCs was developed where mild acid hydrolysis with diluted oxalic acid was used. The reaction kinetics of different preparation parameters, such as reaction temperature, oxalic acid dose, addition of HCl, and reaction time were thoroughly investigated. A high yield of up to 85% was achieved by mild oxalic acid hydrolysis in comparison to the yield of 35% using the most common approach with sulfuric acid hydrolysis. The CNCs from the above approach have a high thermal stability, that is, a maximum thermal degradation temperature of 350 degrees C in comparison to 200 degrees C when sulfuric acid hydrolysis was used. Importantly, oxalic acid solutions were readily recovered, and exhibited consistently high performance in several continuous runs of reaction. The hydrolysates contained mostly monomeric sugars, which could be further utilized for chemical or biofuel production. |
| WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
| 类目[WOS] | Chemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
| 研究领域[WOS] | Chemistry ; Science & Technology - Other Topics ; Materials Science |
| 关键词[WOS] | DILUTE-ACID ; AQUEOUS EXTRACTION ; HYDROCHLORIC-ACID ; PHOSPHORIC-ACID ; SULFURIC-ACID ; MASS-TRANSFER ; KINETICS ; SPRUCE ; HEMICELLULOSES ; NANOFIBRILS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000394911300005 |
| 源URL | [http://ir.qibebt.ac.cn/handle/337004/9342]  |
| 专题 | 青岛生物能源与过程研究所_材料生物技术研究中心 |
| 作者单位 | 1.Abo Akad Univ, Johan Gadolin Proc Chem Ctr, Lab Wood & Paper Chem, FI-20500 Turku, Finland 2.Abo Akad Univ, Johan Gadolin Proc Chem Ctr, Lab Ind Chem & React Engn, FI-20500 Turku, Finland 3.Abo Akad Univ, Phys Chem Lab, FI-20500 Turku, Finland 4.Chinese Acad Sci, CAS Kay Lab Biobased Mat, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China 5.Abo Akad Univ, Johan Gadolin Proc Chem Ctr, Inorgan Chem Lab, FI-20500 Turku, Finland |
| 推荐引用方式 GB/T 7714 | Xu, Wenyang,Grenman, Henrik,Liu, Jun,et al. Mild Oxalic-Acid-Catalyzed Hydrolysis as a Novel Approach to Prepare Cellulose Nanocrystals[J]. CHEMNANOMAT,2017,3(2):109-119. |
| APA | Xu, Wenyang.,Grenman, Henrik.,Liu, Jun.,Kronlund, Dennis.,Li, Bin.,...&Xu, Chunlin.(2017).Mild Oxalic-Acid-Catalyzed Hydrolysis as a Novel Approach to Prepare Cellulose Nanocrystals.CHEMNANOMAT,3(2),109-119. |
| MLA | Xu, Wenyang,et al."Mild Oxalic-Acid-Catalyzed Hydrolysis as a Novel Approach to Prepare Cellulose Nanocrystals".CHEMNANOMAT 3.2(2017):109-119. |
入库方式： OAI收割
来源：青岛生物能源与过程研究所
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