| Dehydration of n-butanol on phosphate-modified carbon nanotubes: active site and intrinsic catalytic activity | |
| Li, Fan1,2; Dai, Xueya1,2; Lu, Xingyu1,2; Wang, Chao3; Qi, Wei1,2 | |
| Corresponding Author | Qi, Wei(wqi@imr.ac.cn) |
| 2021-05-12 | |
| Source Publication | CATALYSIS SCIENCE & TECHNOLOGY
 |
| ISSN | 2044-4753 |
| Pages | 9 |
| Abstract | Dehydration of n-butanol (nB) to corresponding olefins (butene) is an important reaction route to realize efficient utilization of bulk bio-alcohols. In this work, novel phosphate modified oxidized multi-walled carbon nanotubes (P-oCNT) were prepared via a simple impregnation process, and the proposed solid acid catalyst exhibited superior catalytic activity and stability in nB dehydration reactions with 94% nB conversion and 99% butene selectivity under gentle reaction conditions (260 degrees C). In situ titration results revealed that the Bronsted and Lewis acid sites are all active sites, and the Lewis acid sites contribute to over 88% of the activity in nB dehydration reactions. The polyphosphate species (POx) were identified as the key Lewis acid active sites, which were covalently linked onto the oCNT surface via C-O-P bonds, and the carbon matrix played a vital role in enhancing and stabilizing the catalytic activity of the POx species. The basic kinetic analysis results indicated that the nB dehydration reaction on P-oCNT catalysts followed the E1 mechanism, while the reaction route would shift to E2 with the reaction temperature increasing. The relatively high catalytic efficiency and sustainable nature of the whole non-metallic system show the potential of the proposed reaction system in modern chemical industries. |
| Funding Organization | NSFC of China ; Natural Science Foundation of Liaoning Province of China ; Program of the Department of Science & Technology of Liaoning Province |
| DOI | 10.1039/d1cy00426c |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | NSFC of China[22072163] ; NSFC of China[21761132010] ; NSFC of China[91645114] ; Natural Science Foundation of Liaoning Province of China[2020-YQ-02] ; Program of the Department of Science & Technology of Liaoning Province[2019-MS-296] |
| WOS Research Area | Chemistry |
| WOS Subject | Chemistry, Physical |
| WOS ID | WOS:000653911600001 |
| Publisher | ROYAL SOC CHEMISTRY |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/161195 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Qi, Wei |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Shenyang Pharmaceut Univ, Sch Med Devices, 103 Wenhua Rd, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Li, Fan,Dai, Xueya,Lu, Xingyu,et al. Dehydration of n-butanol on phosphate-modified carbon nanotubes: active site and intrinsic catalytic activity[J]. CATALYSIS SCIENCE & TECHNOLOGY,2021:9. |
| APA | Li, Fan,Dai, Xueya,Lu, Xingyu,Wang, Chao,&Qi, Wei.(2021).Dehydration of n-butanol on phosphate-modified carbon nanotubes: active site and intrinsic catalytic activity.CATALYSIS SCIENCE & TECHNOLOGY,9. |
| MLA | Li, Fan,et al."Dehydration of n-butanol on phosphate-modified carbon nanotubes: active site and intrinsic catalytic activity".CATALYSIS SCIENCE & TECHNOLOGY (2021):9. |
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