Dehydration of n-butanol on phosphate-modified carbon nanotubes: active site and intrinsic catalytic activity

doi:10.1039/d1cy00426c

IMR OpenIR

	Dehydration of n-butanol on phosphate-modified carbon nanotubes: active site and intrinsic catalytic activity
	Li, Fan 1,2; Dai, Xueya 1,2; Lu, Xingyu 1,2; Wang, Chao 3; Qi, Wei 1,2
通讯作者	Qi, Wei(wqi@imr.ac.cn)
	2021-05-12
发表期刊	CATALYSIS SCIENCE & TECHNOLOGY
ISSN	2044-4753
页码	9
摘要	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.
资助者	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
收录类别	SCI
语种	英语
资助项目	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研究方向	Chemistry
WOS类目	Chemistry, Physical
WOS记录号	WOS:000653911600001
出版者	ROYAL SOC CHEMISTRY
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/161195
专题	中国科学院金属研究所
通讯作者	Qi, Wei
作者单位	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
推荐引用方式 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.