Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| Hydrogenolysis of methyl heptanoate over Co based catalysts: Mediation of support property on activity and product distribution | |
Liu, Qiying1 ; Bie, Yuwei2; Qiu, Songbai1; Zhang, Qi1; Sainio, Jani3; Wang, Tiejun1; Ma, Longlong1; Lehtonen, Juha2
| |
| 2014-04-05 | |
| Source Publication | APPLIED CATALYSIS B-ENVIRONMENTAL
 |
| Volume | 147Pages:236-245 |
| Abstract | Co/MgO, Co/SiO2 and Co/H beta catalysts were prepared by incipient wetness impregnation. The formation of MgO-CoO solid solution and MgCo2O4 spinel in Co/MgO resulted in high dispersions of Co on MgO even at the low calcined temperatures and the high Co loadings. The second impregnation of Co on Co/MgO enhanced Co cations in surface/subsurface of catalysts, which led to the enlarged metallic Co particle sizes by H-2 reduction. Comparatively, the highly dispersion of Co was only observed on SiO2 and H beta at the low Co loadings owing to the Co delta+ species of strong interactions with these supports. The solid solution/spinel and the strongly interacted Co delta+ species induced the Co cations reduced at higher temperatures with obtaining the small Co particle sizes. These cases also significantly decreased the basicities of Co/MgO depending on calcined temperature and Co loadings, and increased the acidic sites of Co/SiO2 and Co/H beta with obtaining enhanced acidities, respectively. During hydrogenolysis processing, the basic sites of Co/MgO triggers the splitting of acyl C-O bond of methyl heptanoate to form heptanal and methanol, followed by further hydrogenation of heptanal to 1-heptanol. While the acidic Co/SiO2 and Co/H beta induce the cracking of ether C-O bond to heptanoic acid and CH4. Heptanoic acid intermediate is then converted into C-6 and C-7 alkanes by the parallel decarbonylation and HDO pathways, respectively. The activity and product distribution could be facilely mediated by the synergistic catalysis of metal and acid/base. Under optimal conditions, the maximal 1-heptanol and summed C-6/C-7 alkanes yields of 55% and 89% were observed over Co/MgO and Co/SiO2 with desire Co loadings, respectively, indicating the promising applications of these catalysts in hydrogenolysis of vegetable oils. (C) 2013 Elsevier B.V. All rights reserved. |
| Subtype | Article |
| Keyword | Methyl Heptanoate Hydrogenolysis Co Catalyst Support Property Product Distribution |
| WOS Headings | Science & Technology ; Physical Sciences ; Technology |
| DOI | 10.1016/j.apcatb.2013.08.045 |
| WOS Subject Extended | Chemistry ; Engineering |
| WOS Keyword | FISCHER-TROPSCH SYNTHESIS ; VEGETABLE-OILS ; ETHYL-ACETATE ; FATTY-ACIDS ; ESTER HYDROGENOLYSIS ; COBALT CATALYSTS ; MODEL-COMPOUND ; TIN CATALYSTS ; ACETIC-ACID ; HYDROGENATION |
| Indexed By | SCI |
| Language | 英语 |
| WOS Subject | Chemistry, Physical ; Engineering, Environmental ; Engineering, Chemical |
| WOS ID | WOS:000330489400027 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/10710 |
| Collection | 中国科学院广州能源研究所 |
| Affiliation | 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China 2.Aalto Univ, Dept Biotechnol & Chem Technol, Aalto 00076, Finland 3.Aalto Univ, Dept Appl Phys, Aalto 00076, Finland |
| First Author Affilication | GuangZhou Institute of Energy Conversion,Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | Liu, Qiying,Bie, Yuwei,Qiu, Songbai,et al. Hydrogenolysis of methyl heptanoate over Co based catalysts: Mediation of support property on activity and product distribution[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2014,147:236-245. |
| APA | Liu, Qiying.,Bie, Yuwei.,Qiu, Songbai.,Zhang, Qi.,Sainio, Jani.,...&Lehtonen, Juha.(2014).Hydrogenolysis of methyl heptanoate over Co based catalysts: Mediation of support property on activity and product distribution.APPLIED CATALYSIS B-ENVIRONMENTAL,147,236-245. |
| MLA | Liu, Qiying,et al."Hydrogenolysis of methyl heptanoate over Co based catalysts: Mediation of support property on activity and product distribution".APPLIED CATALYSIS B-ENVIRONMENTAL 147(2014):236-245. |
| 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