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Promoted Raney Ni catalyzed hydrodefluorination of fluorophenols under mild conditions via controlling solvents and bases

文献类型：期刊论文

作者Li, Haiyan1,3; Gong, Xutao1,3; Li, Tong1,3; Liu, Sujing1; Liu, Ying1; Ma, Xuanxuan1,3; Li, Qing2; Xia, Chuanhai1,3
刊名CHEMICAL ENGINEERING JOURNAL
出版日期2023-11-01
卷号475页码:10
ISSN号1385-8947
关键词4-Fluorophenol Hydrodefluorination (HDF) Raney Ni Fluoroaromatic compound (FAC) Solvent Base
DOI10.1016/j.cej.2023.146231
通讯作者Ma, Xuanxuan(ytumaxuan@163.com) ; Xia, Chuanhai(chxia_ldu@163.com)
英文摘要Fluorinated organic compounds (FOCs) are difficult to degrade and persistent in the environment due to the strong C-F bond strength. In this context, the applicability of Raney Ni to catalytic hydrodefluorination (HDF) of FOCs under mild conditions remains an important challenge. In this study, the effects of solvent systems and bases on Raney Ni catalyzed HDF reaction were investigated and evaluated with 4-FP using as a model fluo-roaromatic compound (FAC). It was found that the HDF reactivity of 4-FP over Raney Ni increased with the increase of water proportion and polarity of homogeneous ethanol-water solvents, and Raney Ni exhibited highest activity and stability in catalytic HDF of 4-FP in water with appropriate NaOH amount (1.5NaOH) under mild conditions. The mechanisms of these phenomena were clarified with the aid of catalyst characterization (SEM, EDX, and XRD) combined with ICP-OES. The results suggested that water could efficiently dissolve inorganic salt (NaF) produced in situ, which avoided the decrease in the catalytic activity of Raney Ni in the HDF of 4-FP due to the deposition of NaF on the surface of the catalyst. Moreover, the appropriate NaOH amount (1.5NaOH) in water could efficiently avoid the corrosion effect of HF on Raney Ni and eliminate the framework collapse of the catalyst resulted from the corrosion of Al. In water with 1.5NaOH, Raney Ni exhibited the highest activity and stability in catalytic HDF of 4-FP, with a complete conversion of 4-FP for at least 10 times. Based on these studies, an efficient reaction system was developed for Raney Ni catalyzed HDF of 4-FP, which would provide guidance to apply Raney Ni for catalytic HDF of FACs under mild conditions.
WOS关键词LIQUID-PHASE HYDRODECHLORINATION ; ELECTROCHEMICAL HYDRODEFLUORINATION ; DEGRADATION ; HYDRODEHALOGENATION ; ADSORPTION ; WATER ; PD/C
WOS研究方向Engineering
语种英语
WOS记录号WOS:001090879100001
资助机构Na- tional Natural Science Foundation of China ; Science and Technology Plan of Youth Innovation Team in Shandong Province ; Natural Science Foundation of Shandong Province of China
源URL[http://ir.yic.ac.cn/handle/133337/33300]  
专题海岸带生物学与生物资源利用重点实验室
海岸带生物资源高效利用研究与发展中心
通讯作者Ma, Xuanxuan; Xia, Chuanhai
作者单位1.Ludong Univ, Sch Resources & Environm Engn, Yantai 264025, Peoples R China
2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Biol & Bioresource Utilizat, Yantai 264003, Peoples R China
3.Ludong Univ, Inst Adv Study Coastal Ecol, Yantai 264025, Peoples R China
推荐引用方式
GB/T 7714		 Li, Haiyan,Gong, Xutao,Li, Tong,et al. Promoted Raney Ni catalyzed hydrodefluorination of fluorophenols under mild conditions via controlling solvents and bases[J]. CHEMICAL ENGINEERING JOURNAL,2023,475:10.
APA Li, Haiyan.,Gong, Xutao.,Li, Tong.,Liu, Sujing.,Liu, Ying.,...&Xia, Chuanhai.(2023).Promoted Raney Ni catalyzed hydrodefluorination of fluorophenols under mild conditions via controlling solvents and bases.CHEMICAL ENGINEERING JOURNAL,475,10.
MLA Li, Haiyan,et al."Promoted Raney Ni catalyzed hydrodefluorination of fluorophenols under mild conditions via controlling solvents and bases".CHEMICAL ENGINEERING JOURNAL 475(2023):10.

入库方式： OAI收割

来源：烟台海岸带研究所

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