Knowledge Management System Of Institute of process engineering,CAS
| Temperature-Dependent Selectivity of Hydrogenation/Hydrogenolysis during Phenol Conversion over Ni Catalysts | |
| Shi, YC; Xing, EH; Zhang, JM; Xie, YB; Zhao, H; Sheng, YX; Cao, HB; Shi, Yanchun; Xing, Enhui; Zhang, Jimei; Xie, Yongbing; Zhao, He; Sheng, Yuxing; Cao, Hongbin | |
| 2019 | |
| Source Publication | ACS SUSTAINABLE CHEMISTRY & ENGINEERING
 |
| ISSN | 2168-0485 |
| Volume | 7Issue:10Pages:9464 |
| Abstract | It is challenging to selectively upgrade phenolic compounds to aromatics because of much weaker adsorption of hydroxyl compared to that of phenyl upon Ni catalysts. With 10% Ni loading in theory, three Ni catalysts with different Ni nanoparticle sizes were prepared with the wet impregnation method on SiO2 and Silicalite-1 and with the in situ encapsulation method (Silicalite-1). On the basis of the results, we proposed a general rule concerning temperature dependent selectivity control on phenol hydroconversion over Ni catalysts. As well as benzene saturation in consecutive mode, hydrogenation of phenyl ring was more dramatically inhibited at elevated temperature via decreased adsorption of benzene rings than that of hydroxyl to selectively favor hydrogenolysis over hydrogenation in parallel mode. Among three Ni catalysts, Ni@Silicalite-1 with 3-5 nm Ni nanoparticle sizes encapsulated imposed the restricted adsorption conformation of phenol via end-up mode within channels of Silicalite-1 zeolite to further improve benzene selectivity. Because of the restriction of channels and smaller Ni nanoparticle sizes, better activity and stability were simultaneously achieved over Ni@Silicalite-1 catalyst, as well as superior benzene selectivity at higher temperature via thermodynamic hindrance on phenyl adsorption to facilitate benzene formation in kinetics rather than hydrogenation of phenyl without further saturation of benzene via hindrance on benzene adsorption. |
| Keyword | Phenol M-CRESOL Hydrogenolysis METAL-CLUSTERS Benzene HYDRODEOXYGENATION Temperature-dependent selectivity control PHASE Encapsulated Ni catalyst PD DEOXYGENATION AROMATICS ZEOLITE NICKEL HYDROGENATION |
| Subtype | Article |
| DOI | 10.1021/acssuschemeng.9b00703 |
| WOS ID | WOS:000469304900043 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/28192 |
| Collection | 中国科学院过程工程研究所 |
| Recommended Citation GB/T 7714 | Shi, YC,Xing, EH,Zhang, JM,et al. Temperature-Dependent Selectivity of Hydrogenation/Hydrogenolysis during Phenol Conversion over Ni Catalysts[J]. ACS SUSTAINABLE CHEMISTRY & ENGINEERING,2019,7(10):9464, 9473. |
| APA | Shi, YC.,Xing, EH.,Zhang, JM.,Xie, YB.,Zhao, H.,...&Cao, Hongbin.(2019).Temperature-Dependent Selectivity of Hydrogenation/Hydrogenolysis during Phenol Conversion over Ni Catalysts.ACS SUSTAINABLE CHEMISTRY & ENGINEERING,7(10),9464. |
| MLA | Shi, YC,et al."Temperature-Dependent Selectivity of Hydrogenation/Hydrogenolysis during Phenol Conversion over Ni Catalysts".ACS SUSTAINABLE CHEMISTRY & ENGINEERING 7.10(2019):9464. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment