Silver initiated hydrogen spillover on anatase tio2 creates active sites for selective hydrodeoxygenation of guaiacol
文献类型：期刊论文
| 作者 | Liu, Kairui1,2; Yan, Peifang1; Jiang, Hong1; Xia, Zhi1; Xu, Zhanwei1; Bai, Shi3,4; Zhang, Z. Conrad1 |
| 刊名 | Journal of catalysis
 |
| 出版日期 | 2019 |
| 卷号 | 369页码:396-404 |
| ISSN号 | 0021-9517 |
| 关键词 | Hydrodeoxygenation Silver Titania Hydrogen spillover Guaiacol |
| DOI | 10.1016/j.jcat.2018.11.033 |
| 通讯作者 | Zhang, z. conrad(zczhang@dicp.ac.cn) |
| 英文摘要 | Selective hydrocleavage of aromatic c-o bond while preserving the aromatic ring is a desired catalytic process in hydrodeoxygenation (hdo) of biomass derived aromatic oxygenates to high value biochemicals. guaiacol with typical methoxy and' phenolic hydroxyl groups is a representative aromatic di-oxygenates of lignin fragments. sub-nanometer sized silver, a poor hydrogenation metal catalyst, was found to initiate h-2 dissociation and h spillover onto anatase tio2 (tio2-a) surface. the spillover hydrogen enhanced the partial reduction of tio2-a surface at a substantially lowered temperature as compared to the reduction of tio2-a by molecular h-2. the reduction of tio2-a surface by spillover hydrogen was enhanced at ag loading as low as 0.01 wt% on tio2-a. the ratio of spillover h to ag was as high as 675 at ag loading of 0.01 wt% and the ratio decreased with increasing ag loading. we found that the yield of phenolic products was linearly correlated with the amount of spillover hydrogen that created oxygen vacancy (ov) through partial reduction of tio2-a surface. methanol was formed as the main side-product, indicating that the direct hydrocleavage of aromatic c-och3 in guaiacol is favored over that of aromatic c-oh on the created site. (c) 2018 elsevier inc. all rights reserved. |
| WOS关键词 | PHASE HYDRODEOXYGENATION ; CRYSTAL-STRUCTURE ; MODEL COMPOUNDS ; CO OXIDATION ; BIO-OILS ; CATALYSTS ; CONVERSION ; SUPPORT ; NANOPARTICLES ; COMPOUND |
| WOS研究方向 | Chemistry ; Engineering |
| WOS类目 | Chemistry, Physical ; Engineering, Chemical |
| 语种 | 英语 |
| 出版者 | ACADEMIC PRESS INC ELSEVIER SCIENCE |
| WOS记录号 | WOS:000460711700041 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2372717 |
| 专题 | 大连化学物理研究所 |
| 通讯作者 | Zhang, Z. Conrad |
| 作者单位 | 1.Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian Natl Lab Clean Energy, 457 Zhongshan Rd, Dalian 116023, Liaoning, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Univ Delaware, Dept Chem & Biochem, Newark, DE 19716 USA 4.Lanzhou Univ, State Key Lab Appl Organ Chem, Lanzhou 730000, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Kairui,Yan, Peifang,Jiang, Hong,et al. Silver initiated hydrogen spillover on anatase tio2 creates active sites for selective hydrodeoxygenation of guaiacol[J]. Journal of catalysis,2019,369:396-404. |
| APA | Liu, Kairui.,Yan, Peifang.,Jiang, Hong.,Xia, Zhi.,Xu, Zhanwei.,...&Zhang, Z. Conrad.(2019).Silver initiated hydrogen spillover on anatase tio2 creates active sites for selective hydrodeoxygenation of guaiacol.Journal of catalysis,369,396-404. |
| MLA | Liu, Kairui,et al."Silver initiated hydrogen spillover on anatase tio2 creates active sites for selective hydrodeoxygenation of guaiacol".Journal of catalysis 369(2019):396-404. |
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来源：大连化学物理研究所
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