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Johnson K, Xu J, Yerkeson A, Lu M. The catalytic hydro-dechlorination of 2, 4, 4' trichlorobiphenyl at mild temperatures and atmospheric pressure. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION (1995) 2024; 74:457-463. [PMID: 38753760 DOI: 10.1080/10962247.2024.2353643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Accepted: 04/30/2024] [Indexed: 05/18/2024]
Abstract
Polychlorinated biphenyls (PCBs), including all 209 congeners, are designated as persistent organic pollutants (POPs) due to their high toxicity and bioaccumulation in human bodies and the ecosystem. The need for PCB remediation still remains long after their production ban. In this study, a catalytic hydro-dechlorination (HDC) method was employed to dechlorinate 2,4,4'-trichlorobiphenyl (PCB 28), a congener found ubiquitously in multiple environmental media. The HDC of PCB 28 was experimentally studied at mild temperatures viz. ~20, 50, and ~77°C and atmospheric pressure. Et3N (triethylamine) was added as a co-catalyst. The dechlorination rates increased with temperature as well as Et3N dosage, and the HDC pathway was hypothesized based on the product and intermediates observed. The less chlorinated intermediates suggested that the position of the chlorine strongly impacted HDC rates, and the preference of HDC at para positions can be orders of magnitudes higher than the ortho. The activation energy was estimated in the range of 12.4-13.9 kJ/mole, indicating a diffusion-controlled HDC system.Implications: The remediation need for polychlorinated biphenyls (PCBs) still remains long after their production ban around the world. The development of low-cost methods is highly desirable, especially for developing countries, in response to the Stockholm Convention. In this study, the dechorination of a ubiquitously present PCB congener was studied using a catalytic hydro-dechlorination (HDC) method in low temperatures up to ~77°C and was able to achieve near 100% dechlorination in 6 hr. Results indicated that the HDC process can be performed under mild temperatures and atmospheric conditions and can be a potential solution to real world PCB contamination issues.
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Affiliation(s)
- Kevin Johnson
- Department of Chemical and Environmental Engineering, University of Cincinnati (UC), Cincinnati, OH, USA
| | - Juan Xu
- Department of Chemical and Environmental Engineering, University of Cincinnati (UC), Cincinnati, OH, USA
| | - Alyssa Yerkeson
- Department of Chemical and Environmental Engineering, University of Cincinnati (UC), Cincinnati, OH, USA
| | - Mingming Lu
- Department of Chemical and Environmental Engineering, University of Cincinnati (UC), Cincinnati, OH, USA
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Johnson K, Lu M. Experimental study of catalytic hydro-dechlorination (HDC) of Aroclor 1232. CHEMOSPHERE 2024; 349:140987. [PMID: 38122941 DOI: 10.1016/j.chemosphere.2023.140987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 11/27/2023] [Accepted: 12/15/2023] [Indexed: 12/23/2023]
Abstract
Polychlorinated biphenyls (PCBs) is a group of persistent organic pollutants that still requires remediation and reduction long after the production is discontinued. Aroclor 1232 is a commercial PCB mixture that has been much less studied. To address this void, this paper presented catalytic hydro-dechlorination (HDC) of Aroclor 1232 using palladium on activated carbon (Pd/AC) at atmospheric pressure. Experimental variables studied including three mild temperatures, 22.5 °C, 50 °C, and 80 °C, and four different co-catalyst loadings. This batch of Aroclor 1232 constituted of more than 83% of mono-, di-, and tri-, chlorinated biphenyls (CB), in addition to biphenyl, tetra- and penta CBs. HDC efficiency increased with temperature, and reached 99.9% within 4 h of reaction at 80 °C. HDC efficiency also increased with co-catalyst loading. HDC efficiencies followed the trend of para > meta > ortho positions among isomers. The increase of temperature and Et3N dosage are especially effective in dechlorination at ortho and meta positions. The apparent activation energy of Aroclor 1232 HDC was estimated as 25.57 kJ/mol based on pseudo-first order assumption, indicating that the reaction may be diffusion limited. Given the modest reaction conditions used, the HDC of Aroclor 1232 can potentially be a low-cost process.
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Affiliation(s)
- Kevin Johnson
- Dept. of Chemical and Environmental Engineering, University of Cincinnati (UC), Cincinnati, OH, 45221, USA
| | - Mingming Lu
- Dept. of Chemical and Environmental Engineering, University of Cincinnati (UC), Cincinnati, OH, 45221, USA.
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3
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Mu D, Li Z, Yu S, Liu S. Wastewater treatment via hydro-de-heteroatoms using hydrogen donors. Catal Today 2022. [DOI: 10.1016/j.cattod.2022.03.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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4
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Wang W, Wang K, Xu L, Li Y, Niu J. Raney nickel coupled nascent hydrogen as a novel strategy for enhanced reduction of nitrate and nitrite. CHEMOSPHERE 2021; 263:128187. [PMID: 33297153 DOI: 10.1016/j.chemosphere.2020.128187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 08/24/2020] [Accepted: 08/26/2020] [Indexed: 06/12/2023]
Abstract
Raney nickel (R-Ni) is a cost-effective hydrogenation catalyst, and nascent hydrogen (Nas-H2) generated in situ on the cathode trends to more reactive than commercial hydrogen (Com-H2). In the present work, nitrate and nitrite (NOX-) reduction via R-Ni/Nas-H2 catalytic system was investigated. The results show that hydrogenation of NOX- (C0 = 3.0 mM) follows pseudo-first-order reaction kinetics with kinetic constants of 5.18 × 10-2 min-1 (NO3-) and 6.46 × 10-2 min-1 (NO2-). The saturation demand for Nas-H2 is only 0.8 mL min-1 at a fixed R-Ni dosage of 1.0 g L-1. The experiments reveal that both Nas-H2 and hydrogen adatoms (Hads∗) can drive the reduction of NOX-. The improved reduction ratios of NOX- are attributed to two aspects: (1) the micro/nano-sized Nas-H2 bubbles exhibits increased reactivity due to the fine dispersion of the hydrogen molecules; (2) the alkaline environment formed by the cathode positively maintain R-Ni activity, thus, Nas-H2 bubbles were more readily activated to generate powerful Hads∗. The results give insight into NOX- hydrogenation via introducing fine hydrogen resource, and can develop an efficient catalytic hydrogenation technique without noble metals.
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Affiliation(s)
- Weilai Wang
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, 100875, People's Republic of China; Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan, 523808, People's Republic of China
| | - Kaixuan Wang
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, 100875, People's Republic of China
| | - Lei Xu
- Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan, 523808, People's Republic of China
| | - Yang Li
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, 100875, People's Republic of China
| | - Junfeng Niu
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, 100875, People's Republic of China; Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan, 523808, People's Republic of China.
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Zhao Y, Feng X, Zhang S, Yamamoto Y, Bao M. Hydrodebromination of Aromatic Bromides Catalyzed by Unsupported Nanoporous Gold: Heterolytic Cleavage of Hydrogen Molecule. ChemCatChem 2020. [DOI: 10.1002/cctc.202000674] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yuhui Zhao
- State Key Laboratory of Fine Chemicals Dalian University of Technology Dalian 116023 P. R. China
| | - Xiujuan Feng
- State Key Laboratory of Fine Chemicals Dalian University of Technology Dalian 116023 P. R. China
| | - Sheng Zhang
- State Key Laboratory of Fine Chemicals Dalian University of Technology Dalian 116023 P. R. China
| | - Yoshinori Yamamoto
- State Key Laboratory of Fine Chemicals Dalian University of Technology Dalian 116023 P. R. China
- Research Organization of Science and Technology Ritsumeikan University Kusatsu 525-8577 Japan
| | - Ming Bao
- State Key Laboratory of Fine Chemicals Dalian University of Technology Dalian 116023 P. R. China
- School of Chemical Engineering Dalian University of Technology Panjin 124221 P. R. China
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Raut SS, Shetty R, Raju NM, Kamble SP, Kulkarni PS. Screening of zero valent mono/bimetallic catalysts and recommendation of Raney Ni (without reducing agent) for dechlorination of 4-chlorophenol. CHEMOSPHERE 2020; 250:126298. [PMID: 32234622 DOI: 10.1016/j.chemosphere.2020.126298] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Revised: 02/06/2020] [Accepted: 02/20/2020] [Indexed: 06/11/2023]
Abstract
Chlorophenol (CP) is considered as environmentally hazardous material due to its acute toxicity, persistent nature and strong bioaccumulation. The dechlorination of 4-CP was investigated by using various catalysts such as bimetallic (Fe0/Cu0, Al0/Fe0), Pd/C, Raney Ni and Fe0 at room temperature. Among the catalysts studied, Raney Ni proved to be very economical and efficient catalyst that worked without the use of an external reducing agent. The dechlorination of 4-CP by Raney Ni was therefore further explored. Complete dechlorination of 4-CP (30 mg L-1) was achieved in 6 h at an optimum Raney Ni catalyst loading of 3 g L-1. The effect of triethylamine (TEA) and tripropylamine (TPA) was also investigated and it was observed that 100% dechlorination is possible in presence of 45 mg L-1 of TEA. The kinetics of dechlorination of 4-CP was investigated and found to be first order with a rate constant of 0.017 min-1 at 50 οC, and it enhances to 0.109 min-1 with addition of TEA. In the absence of a reducing agent, acidic to neutral pH favors dechlorination of 4-CP. The final product of dechlorination was estimated to be phenol by performing HPLC, LCMS and NMR analysis. Based on the results, a probable dechlorination mechanism of 4-CP is also proposed. It can be concluded that the catalytic hydrodechlorination is an effective and economical technique for dechlorination of 4-CP and it has a potential for the dechlorination of other toxic derivatives of chlorinated aromatics.
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Affiliation(s)
- Sandesh S Raut
- Energy & Environment Laboratory, Department of Applied Chemistry, Defence Institute of Advanced Technology (DU), Ministry of Defence, Girinagar, Pune, 411 025 India
| | - Rohit Shetty
- Chemical Engineering and Process Development Division, CSIR-National Chemical Laboratory, Pune, India; Academy of Scientific and Innovative Research (AcSIR), CSIR-NCL Pune, India
| | - Nikhi Maria Raju
- Chemical Engineering and Process Development Division, CSIR-National Chemical Laboratory, Pune, India
| | - Sanjay P Kamble
- Chemical Engineering and Process Development Division, CSIR-National Chemical Laboratory, Pune, India.
| | - Prashant S Kulkarni
- Energy & Environment Laboratory, Department of Applied Chemistry, Defence Institute of Advanced Technology (DU), Ministry of Defence, Girinagar, Pune, 411 025 India.
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Wang W, Niu J, Yang Z. An efficient reduction of unsaturated bonds and halogen-containing groups by nascent hydrogen over Raney Ni catalyst. JOURNAL OF HAZARDOUS MATERIALS 2020; 389:121912. [PMID: 31874759 DOI: 10.1016/j.jhazmat.2019.121912] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 12/13/2019] [Accepted: 12/15/2019] [Indexed: 06/10/2023]
Abstract
Presence of unsaturated bonds and halogen-containing groups is the most common characteristic of toxic and harmful environmental pollutants. Herein, catalytic hydrogenation was chosen as a water quality control method for such contaminants. Considering the safety, availability and activity of the hydrogen source, electrochemical in situ hydrogen generation was introduced. Under the combined action of Raney Ni (R-Ni) and nascent hydrogen (Nas-H2), three compounds (50 mg L-1, 90 ml), i.e., acrylamide, 2, 6-dibromo-4-nitrophenol and 2-chloro-4-fluorobenzonitrile achieved complete hydrogenation reduction in a short time. The improved system realized the quantitative consumption of hydrogen source and the efficient operation of hydrogenation reaction under mild conditions. Additionally, the alkaline environment formed by hydrogen evolution reaction (HER) avoided secondary pollution caused by catalyst dissolution. Atomic hydrogen (H·) produced from R-Ni and Nas-H2 was the active free radical of the reaction. The hydrogenation activities of different functional groups were obtained according to the following order: Ph-NO2 > -C = C- > Ph-C≡N > Ph-Br > Ph-Cl > Ph-F. This work indicates that the catalytic hydrogenation system consisting of R-Ni and Nas-H2 is a promising technology to reduce unsaturated bonds and halogen-containing groups.
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Affiliation(s)
- Weilai Wang
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, People's Republic of China; Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan 523808, People's Republic of China
| | - Junfeng Niu
- Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan 523808, People's Republic of China.
| | - Zhifeng Yang
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, People's Republic of China
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Ma X, Liu S, Liu Y, Li X, Li Q, Gu G, Xia C. Promoted liquid-phase hydrodechlorination of chlorophenol over Raney Ni via controlling base: Performance, mechanism, and application. CHEMOSPHERE 2020; 242:125202. [PMID: 31677512 DOI: 10.1016/j.chemosphere.2019.125202] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Revised: 10/15/2019] [Accepted: 10/22/2019] [Indexed: 06/10/2023]
Abstract
The potential effect of base on Raney Ni-catalyzed hydrodechlorination (HDC) of chlorophenol was studied. Compared to weak inorganic bases, strong inorganic bases (NaOH and KOH) and triethylamine (Et3N) were more favorable to promote Raney Ni-catalyzed HDC reaction. Moreover, a stoichiometric amount of NaOH/Et3N was found to be optimal for the HDC reaction, and up to 100% conversion of 4-chlorophenol was achieved within 30 min. Catalyst characterization (SEM, EDXS, and XRD) combined with ICP-OES analysis were introduced to better understand the mechanism for the promoted effect of base on the HDC reaction. The results showed that the optimal amount of strong inorganic bases and Et3N efficiently eliminated HCl corrosion to Raney Ni, greatly reduced the active phase Ni and Al leaching, and avoided collapse of the catalyst framework. Based on the mechanism, the best bases and their optimal amount were developed for further disposal of polychlorinated phenols, and excellently stepwise HDC of polychlorinated phenols was achieved. Recycling tests showed that Raney Ni could be reused at least 5 times for the HDC reaction with the stoichiometric amount of NaOH, which was a promising option for the HDC of wastewater containing chlorophenols over Raney Ni.
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Affiliation(s)
- Xuanxuan Ma
- The Institute for Advanced Study of Coastal Ecology, School of Resources and Environmental Engineering, Ludong University, Yantai, 264025, China; Fujian Provincial Colleges and University Engineering Research Center of Solid Waste Resource Utilization, Longyan University, Longyan, 364012, China
| | - Sujing Liu
- The Institute for Advanced Study of Coastal Ecology, School of Resources and Environmental Engineering, Ludong University, Yantai, 264025, China
| | - Ying Liu
- The Institute for Advanced Study of Coastal Ecology, School of Resources and Environmental Engineering, Ludong University, Yantai, 264025, China
| | - Xiaoqiang Li
- School of Environment and Materials Engineering, Yantai University, Yantai, 264005, China
| | - Qing Li
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China
| | - Guodong Gu
- Alliance Pharma, Inc. 17 Lee Boulevard Malvern, PA, 19355, USA
| | - Chuanhai Xia
- The Institute for Advanced Study of Coastal Ecology, School of Resources and Environmental Engineering, Ludong University, Yantai, 264025, China.
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Liu Y, Yan Z, Chen R, Yu Y, Chen X, Zheng X, Huang X. 2,4-Dichlorophenol removal from water using an electrochemical method improved by a composite molecularly imprinted membrane/bipolar membrane. JOURNAL OF HAZARDOUS MATERIALS 2019; 377:259-266. [PMID: 31173974 DOI: 10.1016/j.jhazmat.2019.05.064] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2018] [Revised: 04/03/2019] [Accepted: 05/25/2019] [Indexed: 06/09/2023]
Abstract
Low efficiency is often a problem in electrochemical reductive hydrodechlorination (ERHD) to remove chlorinated compounds such as 2,4-dichlorophenol (24DCP) from water. In this study, a composite molecularly imprinted membrane (MIM)/bipolar membrane (BPM) was introduced onto a palladium-coated titanium mesh electrode (BPM/MIM@Pd/Ti) to increase the concentration of 24DCP on the surface of electrode and ERHD efficiency. The efficiency of ERHD of 24DCP increased from 70 to 88% by introduction of the two membranes, from 71 to 89% by increasing current density from 5.0 to 30 mA/cm2, and from 80 to 94% by increasing the electrolyte concentration from 0.25 to 1.00 mol/L. Treatment with Fenton's reagent after ERHD achieved 100% 24DCP removal, with chemical oxygen demand and total organic carbon reductions of 91 and 87%, respectively. Notably, these reductions were greater than obtained from the direct oxidation of the 24DCP solution by Fenton's reagent alone (i.e., 98, 84, and 72%, respectively). No products were detected in solution by GC-MS after treatment with the proposed combination technology. The mechanism of 24DCP removal and degradation involved adsorption, electrochemical hydrodechlorination via Hads, and Fenton oxidation. Results show the process has high potential for removing 24DCP from aqueous solution.
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Affiliation(s)
- Yaoxing Liu
- College of Environmental Science and Engineering, Fujian Key Laboratory of Pollution Control & Resource Reuse, Fujian Normal University, Fujian Province, Fuzhou 350007, China
| | - Zhang Yan
- College of Environmental Science and Engineering, Fujian Key Laboratory of Pollution Control & Resource Reuse, Fujian Normal University, Fujian Province, Fuzhou 350007, China
| | - Riyao Chen
- College of Environmental Science and Engineering, Fujian Key Laboratory of Pollution Control & Resource Reuse, Fujian Normal University, Fujian Province, Fuzhou 350007, China.
| | - Yaping Yu
- College of Environmental Science and Engineering, Fujian Key Laboratory of Pollution Control & Resource Reuse, Fujian Normal University, Fujian Province, Fuzhou 350007, China; Taizhou Vocational College of Science & Technology, Zhejiang Province, Taizhou 318020, China
| | - Xiao Chen
- College of Environmental Science and Engineering, Fujian Key Laboratory of Pollution Control & Resource Reuse, Fujian Normal University, Fujian Province, Fuzhou 350007, China
| | - Xi Zheng
- College of Environmental Science and Engineering, Fujian Key Laboratory of Pollution Control & Resource Reuse, Fujian Normal University, Fujian Province, Fuzhou 350007, China
| | - Xuehong Huang
- College of Environmental Science and Engineering, Fujian Key Laboratory of Pollution Control & Resource Reuse, Fujian Normal University, Fujian Province, Fuzhou 350007, China
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A Review on the Recent Advances in the Reductions of Carbon–Carbon/Oxygen Multiple Bonds Including Aromatic Rings Using Raney Ni–Al Alloy or Al Powder in the Presence of Noble Metal Catalysts in Water. Top Catal 2018. [DOI: 10.1007/s11244-018-0994-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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11
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Evaluation of Base for Catalytic Hydrodechlorination of 2,4-Dichlorophenol in Cocurrent Downflow Contactor Reactor. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2017. [DOI: 10.1007/s13369-016-2300-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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12
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Ma X, Liu S, Liu Y, Gu G, Xia C. Comparative study on catalytic hydrodehalogenation of halogenated aromatic compounds over Pd/C and Raney Ni catalysts. Sci Rep 2016; 6:25068. [PMID: 27113406 PMCID: PMC4844995 DOI: 10.1038/srep25068] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Accepted: 04/11/2016] [Indexed: 11/23/2022] Open
Abstract
Catalytic hydrodehalogenation (HDH) has proved to be an efficient approach to dispose halogenated aromatic compounds (HACs). Liquid-phase HDH of single and mixed halobenzenes/4-halophenols with H2 over 5% Pd/C and Raney Ni catalyst are investigated and compared. For liquid-phase HDH of single HACs, hydrogenolytic scission reactivity of C-X bonds decreases in order of C-Br > C-Cl > C-I > C-F over Pd/C catalyst, and in order of C-I > C-Br > C-Cl > C-F over Raney Ni catalyst. To clarify the reason why hydrogenolytic scission reactivity of C-X bonds over Pd/C and Raney Ni catalysts exhibits different trends, liquid-phase HDH of mixed HACs over Pd/C and Raney Ni catalysts were studied, and catalysts are characterized by SEM, EDX, and XRD techniques. It was found that the high adsorption of iodoarenes on Pd/C catalyst caused the HDH reactivity of iodoarenes to be lower than that of chloroarenes and bromoarenes in the HDH of single HACs. Moreover, the adsorption of in situ produced iodine ion (I−) to catalyst surface would result in the decline of catalytic activity, which might be the main reason why the HDH reactivity of HACs in the presence of NaI is rather low.
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Affiliation(s)
- Xuanxuan Ma
- School of Resources and Environmental Engineering, Ludong University, Yantai 264025, China
| | - Sujing Liu
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
| | - Ying Liu
- School of Resources and Environmental Engineering, Ludong University, Yantai 264025, China
| | - Guodong Gu
- Alliance Pharma, Inc. 17 Lee Boulevard Malvern, PA 19355, USA
| | - Chuanhai Xia
- School of Resources and Environmental Engineering, Ludong University, Yantai 264025, China
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Lan L, Du F, Xia C. The reaction mechanism for highly effective hydrodechlorination of p-chlorophenol over a Pd/CNTs catalyst. RSC Adv 2016. [DOI: 10.1039/c6ra21213a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Different mass-transfer mechanisms of CNTs and AC for the HDC of p-CP.
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Affiliation(s)
- Lijuan Lan
- College of Materials Science and Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- China
- School of Environment and Materials Engineering
| | - Fanglin Du
- College of Materials Science and Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- China
| | - Chuanhai Xia
- School of Resources and Environmental Engineering
- Ludong University
- Yantai 264025
- China
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14
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Xue Z, Zhao X, Wang J, Mu T. Transfer hydrodehalogenation of aryl halides accelerated by a saturated sodium acetate aqueous solution. RSC Adv 2016. [DOI: 10.1039/c6ra24559e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A saturated sodium acetate aqueous solution could be applied as an efficient and environmentally-friendly reaction medium to accelerate transfer hydrodehalogenation of various aryl halides.
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Affiliation(s)
- Zhimin Xue
- Beijing Key Laboratory of Lignocellulosic Chemistry
- College of Materials Science and Technology
- Beijing Forestry University
- Beijing 100083
- China
| | - Xinhui Zhao
- Department of Chemistry
- Renmin University of China
- Beijing 100872
- China
| | - Jinfang Wang
- Department of Chemistry
- Renmin University of China
- Beijing 100872
- China
| | - Tiancheng Mu
- Department of Chemistry
- Renmin University of China
- Beijing 100872
- China
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Rayhan U, Do JH, Arimura T, Yamato T. Reduction of carbonyl compounds by Raney Ni–Al alloy and Al powder in the presence of noble metal catalysts in water. CR CHIM 2015. [DOI: 10.1016/j.crci.2014.10.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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16
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17
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Simion AM, Arimura T, Simion C. Reaction of cinnamaldehyde and derivatives with Raney Ni–Al alloy and Al powder in water. Reduction or oxido-reduction? CR CHIM 2013. [DOI: 10.1016/j.crci.2012.11.022] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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18
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Electrocatalytic dechlorination of 2,4-dichlorophenol in aqueous solution on palladium loaded meshed titanium electrode modified with polymeric pyrrole and surfactant. Colloids Surf A Physicochem Eng Asp 2012. [DOI: 10.1016/j.colsurfa.2012.08.035] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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