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Hu L, Shi L, Shen F, Tong Q, Lv X, Li Y, Liu Z, Ao L, Zhang X, Jiang G, Hou L. Electrocatalytic hydrodechlorination system with antiscaling and anti-chlorine poisoning features for salt-laden wastewater treatment. WATER RESEARCH 2022; 225:119210. [PMID: 36215844 DOI: 10.1016/j.watres.2022.119210] [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: 08/10/2022] [Revised: 09/23/2022] [Accepted: 10/04/2022] [Indexed: 06/16/2023]
Abstract
The high salinity and coexistence of scaling ions (Ca2+, Mg2+, HCO3-) in wastewater challenge the efficacy and durability of palladium (Pd)-mediated electrocatalytic hydrodechlorination (EHDC) reaction for chlorinated organic pollutant detoxification, due to the accompanying Cl- poisoning at Pd sites and scaling on electrode. In a concentrated NaCl solution (5.8 g L - 1) with Ca2+ (80.0 mg L - 1), Mg2+ (30.0 mg L - 1) and HCO3- (180.0 mg L - 1), the EHDC efficiency of Pd towards 2,4-dichlorophenol decreases significantly from 67.8% to 33.1% in 72.0 h of reaction, and the electrode is covered with layers of fluffy aragonite precipitate. Herein we demonstrate the inclusion of a commercial antiscalant 2-phosphonobutane-1,2,4-tricarboxylic acid (PBTC) can prevent both scale formation and Cl- poisoning, leading to an efficient and steady EHDC process. A mechanistic study reveals that the unique dual function of PBTC primarily originates from the bearing phosphonate and carboxyl groups. With the large affinity of these groups (especially the phosphonate group) for scaling cations and Pd, the PBTC can chelate and stabilize the scaling cations in water and replace Cl- at Pd surface. It can also release protons, and trigger the formation of more electron-deficient Pdδ+ species via PBTC-Pd binding, leading to an enhanced EHDC. This work provides effective solutions to the scaling/poisoning issues that commonly encountered in real wastewater and paves a solid road for EHDC application in pollution abatement.
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Affiliation(s)
- Lin Hu
- Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Technology and Business University, Chongqing 400067, China
| | - Li Shi
- Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Technology and Business University, Chongqing 400067, China
| | - Fei Shen
- Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Technology and Business University, Chongqing 400067, China
| | - Qiuwen Tong
- Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Technology and Business University, Chongqing 400067, China
| | - Xiaoshu Lv
- Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Technology and Business University, Chongqing 400067, China
| | - Yiming Li
- Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Technology and Business University, Chongqing 400067, China
| | - Zixun Liu
- Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Technology and Business University, Chongqing 400067, China
| | - Liang Ao
- Chongqing Academy of Eco-Environmental Science, Chongqing 400700, China; Chongqing Institute of Geology and Mineral Resources, Chongqing 400700, China
| | - Xianming Zhang
- Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Technology and Business University, Chongqing 400067, China
| | - Guangming Jiang
- Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Technology and Business University, Chongqing 400067, China; High Tech Inst Beijing, Beijing 100000, China; Chongqing Academy of Eco-Environmental Science, Chongqing 400700, China; Chongqing Institute of Geology and Mineral Resources, Chongqing 400700, China.
| | - Li'an Hou
- High Tech Inst Beijing, Beijing 100000, China.
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Lee S, Seo JC, Chun HJ, Yang S, Sim EH, Lee J, Kim YT. Selective olefin production on silica based iron catalysts in Fischer–Tropsch synthesis. Catal Sci Technol 2022. [DOI: 10.1039/d2cy00988a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mixed phases of Fe3O4 and Fe5C2, interacting properly with SiO2, produce highly selective olefins from syngas.
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Affiliation(s)
- Sungwoo Lee
- C1 Gas & Carbon Convergent Research Center, Korea Research Institute of Chemical Technology, Daejeon, 34114, Republic of Korea
| | - Jeong-Cheol Seo
- C1 Gas & Carbon Convergent Research Center, Korea Research Institute of Chemical Technology, Daejeon, 34114, Republic of Korea
| | - Hee-Joon Chun
- Corporate R&D Institute, Samsung Electro-mechanics, 150, Maeyoung-ro, Yeongtong-gu, Suwon, Gyeonggi-do, 16674, Republic of Korea
| | - Sunkyu Yang
- C1 Gas & Carbon Convergent Research Center, Korea Research Institute of Chemical Technology, Daejeon, 34114, Republic of Korea
| | - Eun-hae Sim
- C1 Gas & Carbon Convergent Research Center, Korea Research Institute of Chemical Technology, Daejeon, 34114, Republic of Korea
- Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seoul, 02841, Republic of Korea
| | - Jechan Lee
- School of Civil, Architectural Engineering, and Landscape Architecture & Department of Global Smart City, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea
| | - Yong Tae Kim
- C1 Gas & Carbon Convergent Research Center, Korea Research Institute of Chemical Technology, Daejeon, 34114, Republic of Korea
- Department of Advanced Materials and Chemical Engineering, University of Science and Technology, Gajeong-dong, Yuseong, Daejeon, 34113, Republic of Korea
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Chen Y, Gao Y, Wang L, Gong H. The mechanism of MOF as the heterogeneous catalyst for propene hydroformylation: The DFT study. REACT CHEM ENG 2022. [DOI: 10.1039/d1re00527h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Metal-organic framework which was composed of metal center and organic linkers possessing the similar structure with the homogeneous metal-complex catalyst for hydroformylation, thus it could be potentially used as the...
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Shenoy CS, Khan TS, Verma K, Tsige M, Jha KC, Haider MA, Gupta S. Understanding the origin of structure sensitivity in hydrodechlorination of trichloroethylene on a palladium catalyst. REACT CHEM ENG 2021. [DOI: 10.1039/d1re00252j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Mechanistic understanding on the origin of structure sensitivity in the hydrodechlorination of trichloroethylene.
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Affiliation(s)
- Chaitra S. Shenoy
- Renewable Energy and Chemicals Laboratory, Department of Chemical Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Tuhin S. Khan
- Light Stock Processing Division, CSIR – Indian Institute of Petroleum, Mohkampur, Dehradun 248005, India
| | - Kirti Verma
- Renewable Energy and Chemicals Laboratory, Department of Chemical Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Mesfin Tsige
- College of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325, USA
| | - Kshitij C. Jha
- College of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325, USA
- Biena Tech LLC, 526 S Main St, Akron, Ohio 44311, USA
- Department of Chemical Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - M. Ali Haider
- Renewable Energy and Chemicals Laboratory, Department of Chemical Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Shelaka Gupta
- Department of Chemical Engineering, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana 502285, India
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Abstract
The unprecedented ability of computations to probe atomic-level details of catalytic systems holds immense promise for the fundamentals-based bottom-up design of novel heterogeneous catalysts, which are at the heart of the chemical and energy sectors of industry. Here, we critically analyze recent advances in computational heterogeneous catalysis. First, we will survey the progress in electronic structure methods and atomistic catalyst models employed, which have enabled the catalysis community to build increasingly intricate, realistic, and accurate models of the active sites of supported transition-metal catalysts. We then review developments in microkinetic modeling, specifically mean-field microkinetic models and kinetic Monte Carlo simulations, which bridge the gap between nanoscale computational insights and macroscale experimental kinetics data with increasing fidelity. We finally review the advancements in theoretical methods for accelerating catalyst design and discovery. Throughout the review, we provide ample examples of applications, discuss remaining challenges, and provide our outlook for the near future.
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Affiliation(s)
- Benjamin W J Chen
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Lang Xu
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Manos Mavrikakis
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
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Almithn AS, Hibbitts DD. Impact of Metal and Heteroatom Identities in the Hydrogenolysis of C–X Bonds (X = C, N, O, S, and Cl). ACS Catal 2020. [DOI: 10.1021/acscatal.0c00481] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Abdulrahman S. Almithn
- Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611, United States
- Department of Chemical Engineering, King Faisal University, Al-Ahsa 31982, Saudi Arabia
| | - David D. Hibbitts
- Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611, United States
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Chloroform Hydrodechlorination on Palladium Surfaces: A Comparative DFT Study on Pd(111), Pd(100), and Pd(211). Top Catal 2020. [DOI: 10.1007/s11244-019-01218-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Ball MR, Rivera-Dones KR, Stangland E, Mavrikakis M, Dumesic JA. Hydrodechlorination of 1,2-dichloroethane on supported AgPd catalysts. J Catal 2019. [DOI: 10.1016/j.jcat.2018.12.019] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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9
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Tacey SA, Xu L, Szilvási T, Schauer JJ, Mavrikakis M. Quantum chemical calculations to determine partitioning coefficients for HgCl 2 on iron-oxide aerosols. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 636:580-587. [PMID: 29723830 DOI: 10.1016/j.scitotenv.2018.04.289] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Revised: 04/10/2018] [Accepted: 04/21/2018] [Indexed: 06/08/2023]
Abstract
Gas-to-particle phase partitioning controls the pathways for oxidized mercury deposition from the atmosphere to the Earth's surface. The propensity of oxidized mercury species to transition between these two phases is described by the partitioning coefficient (Kp). Experimental measurements of Kp values for HgCl2 in the presence of atmospheric aerosols are difficult and time-consuming. Quantum chemical calculations, therefore, offer a promising opportunity to efficiently estimate partitioning coefficients for HgCl2 on relevant aerosols. In this study, density functional theory (DFT) calculations are used to predict Kp values for HgCl2 on relevant iron-oxide surfaces. The model is first verified using a NaCl(100) surface, showing good agreement between the calculated (2.8) and experimental (29-43) dimensionless partitioning coefficients at room temperature. Then, the methodology is applied to six atmospherically relevant terminations of α-Fe2O3(0001): OH-Fe-R, (OH)3-Fe-R, (OH)3-R, O-Fe-R, Fe-O3-R, and O3-R (where R denotes bulk ordering). The OH-Fe-R termination is predicted to be the most stable under typical atmospheric conditions, and on this surface termination, a dimensionless HgCl2Kp value of 5.2 × 103 at 295 K indicates a strong preference for the particle phase. This work demonstrates DFT as a promising approach to obtain partitioning coefficients, which can lead to improved models for the transport of mercury, as well as for other atmospheric pollutant species, through and between the anthroposphere and troposphere.
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Affiliation(s)
- Sean A Tacey
- Department of Chemical and Biological Engineering, 1415 Engineering Drive, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Lang Xu
- Department of Chemical and Biological Engineering, 1415 Engineering Drive, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Tibor Szilvási
- Department of Chemical and Biological Engineering, 1415 Engineering Drive, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - James J Schauer
- Department of Chemical and Biological Engineering, 1415 Engineering Drive, University of Wisconsin-Madison, Madison, WI 53706, USA; Department of Civil and Environmental Engineering, 1415 Engineering Drive, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Manos Mavrikakis
- Department of Chemical and Biological Engineering, 1415 Engineering Drive, University of Wisconsin-Madison, Madison, WI 53706, USA.
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