التفاصيل البيبلوغرافية
| العنوان: |
Imidazole-Functionalized Polyoxometalate Catalysts for the Oxidation of 5‑Hydroxymethylfurfural to 2,5-Diformylfuran Using Atmospheric O 2 |
| المؤلفون: |
Dan Liu, Baokuan Chen, Jie Li, Zhengguo Lin, Peihe Li, Ni Zhen, Yingnan Chi, Changwen Hu |
| سنة النشر: |
1753 |
| مصطلحات موضوعية: |
Biochemistry, Medicine, Cell Biology, Physiology, Biotechnology, Evolutionary Biology, Ecology, Space Science, Environmental Sciences not elsewhere classified, Biological Sciences not elsewhere classified, Chemical Sciences not elsewhere classified, functionalized V groups, biomass valorization, Keggin cluster, 1- methylimidazole, 1- propylimidazole, VO, solvothermal method, imidazole-functionalized polyoxomet, oxidation mechanism, Compound, HMF, 1- ethylimidazole, carbon source, optimized conditions, Atmospheric O 2 Biomass, O 2, V V O, DFF, platform molecule |
| الوصف: |
Biomass as a sustainable and abundant carbon source has attracted considerable attention as a potential alternative to petroleum resources. The selective oxidation of 5-hydroxymethylfurfural (HMF), a versatile platform molecule, to value-added 2,5-diformylfuran (DFF) provides an efficient pathway for biomass valorization. Herein, three discrete imidazole-functionalized polyoxometalates (POMs), HPMo 8 V VI 4 O 40 (V V O) 2 [(V IV O)(IM) 4 ] 2 · n H 2 O·(IM) m (IM = 1-methylimidazole, n = 4, m = 8 for 1 ; IM = 1-ethylimidazole, n = 4, m = 9 for 2 ; IM = 1-propylimidazole, n = 0, m = 4 for 3 ), have been successfully synthesized by a facile solvothermal method and thoroughly characterized by routine techniques. Compounds 1 – 3 contain a bi-capped pseudo -Keggin {HPMo 8 V 4 O 40 (VO) 2 } and two imidazole-functionalized {(VO)(IM) 4 } groups, which, to our knowledge, represent the first examples of organic-functionalized Mo–V clusters. Compounds 1 – 3 as heterogeneous catalysts can effectively promote the transformation of HMF to DFF using atmospheric O 2 as oxidant. Under minimally optimized conditions, 95% of HMF was converted by 1 with 95% selectivity for DFF and its catalytic activity was basically maintained after five cycles. Moreover, the important roles of the bi-capped pseudo -Keggin cluster and the functionalized V groups in the selective oxidation of HMF have been explored. According to experimental and spectroscopic results, a three-step oxidation mechanism of HMF to DFF has been proposed. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
unknown |
| Relation: |
https://doi.org/10.1021/acs.inorgchem.0c03698.s001 |
| DOI: |
10.1021/acs.inorgchem.0c03698.s001 |
| الاتاحة: |
https://doi.org/10.1021/acs.inorgchem.0c03698.s001 |
| Rights: |
undefined |
| رقم الانضمام: |
edsbas.3687DC27 |
| قاعدة البيانات: |
BASE |