Anatase TiO2 Activated by Gold Nanoparticles for Selective Hydrodeoxygenation of Guaiacol to Phenolics
文献类型：期刊论文
| 作者 | Wang, Zhiguang1; Mao, Jingbo1,2,3; Zhou, Jinxia3; Xia, Zhi1; Xu, Zhanwei1; Xu, Wenjuan1; Yan, Peifang1; Liu, Kairui1; Guo, Xinwen2; Zhang, Z. Conrad1 |
| 刊名 | ACS CATALYSIS
 |
| 出版日期 | 2017 |
| 卷号 | 7期号:1页码:695-705 |
| 关键词 | guaiacol hydrogenation phenol gold catalyst anatase lignin |
| 英文摘要 | Gold nanoparticles on a number of supporting materials, including anatase TiO2 (TiO2-A, in 40 nm and 45 pm), rutile TiO2 (TiO2-R), ZrO2, Al2O3, SiO2, and activated carbon, were evaluated for hydrodeoxygenation of guaiacol in 6.5 MPa initial H-2 pressure at 300 degrees C. The presence of gold nanoparticles on the supports did not show distinguishable performance compared to that of the supports alone in the conversion level and in the product distribution, except for that on a TiO2-A-40 nm. The lack of marked catalytic activity on supports other than TiO2-A-40 nm suggests that Au nanoparticles are not catalytically active on these supports. Most strikingly, the gold nanoparticles on the least-active TiO2-A-40 nm support stood out as the best catalyst exhibiting high activity with excellent stability and remarkable selectivity to phenolics from guaiacol hydrodeoxygenation. The conversion of guaiacol (similar to 43.1%) over gold on the TiO2-A-40 nm was about 33 times that (1.3%) over the TiO2-A-40 nm alone. The selectivity of phenolics was 87.1%. The products are mainly phenolic compounds with no aromatics and saturated hydrocarbons such as cyclohexane. The gold particle size ranging from 2.7 to 41 nm and water content were found to significantly affect the Au/TiO2-A-40 nm catalyst activity but not the product selectivity. The reaction rates of 0.26 and 0.91 (min(-1) g-cat(-1) cm(3)) were determined for guaiacol hydrogenation and catechol hydrogenation, respectively. Bimolecular methylation was established as the dominant mechanism for methyl group transfer among the phenolics. Two major pathways of guaiacol hydrogenation to phenolics over the 0.4Au-19 nm/TiO2-A-40 nm are proposed: (1) direct hydrogenation of guaiacol to form phenol and methanol, (2) hydrodehydroxylation of catechol intermediate from the transmethylation between guaiacol and phenol. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Chemistry, Physical |
| 研究领域[WOS] | Chemistry |
| 关键词[WOS] | VAPOR-PHASE HYDRODEOXYGENATION ; AU NANOPARTICLES ; LOW-TEMPERATURE ; HYDROGENATION CATALYSIS ; TRANSPORTATION FUELS ; CO-OXIDATION ; SUPPORTED NI ; CONVERSION ; PLATINUM ; KINETICS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000391783200077 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/151867]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China 2.Dalian Univ Technol, State Key Lab Fine Chem, PSU DUT Joint Ctr Energy Res, Sch Chem Engn, Dalian 116024, Peoples R China 3.Dalian Univ, Coll Environm & Chem Engn, Dalian 116622, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Zhiguang,Mao, Jingbo,Zhou, Jinxia,et al. Anatase TiO2 Activated by Gold Nanoparticles for Selective Hydrodeoxygenation of Guaiacol to Phenolics[J]. ACS CATALYSIS,2017,7(1):695-705. |
| APA | Wang, Zhiguang.,Mao, Jingbo.,Zhou, Jinxia.,Xia, Zhi.,Xu, Zhanwei.,...&Zhang, Z. Conrad.(2017).Anatase TiO2 Activated by Gold Nanoparticles for Selective Hydrodeoxygenation of Guaiacol to Phenolics.ACS CATALYSIS,7(1),695-705. |
| MLA | Wang, Zhiguang,et al."Anatase TiO2 Activated by Gold Nanoparticles for Selective Hydrodeoxygenation of Guaiacol to Phenolics".ACS CATALYSIS 7.1(2017):695-705. |
入库方式： OAI收割
来源：大连化学物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。