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Zhang Q, Huang W, Xing J, Dong X, Liu G, Xu Y, Liu Z. Effect of Trace Water on the 1,2-Dichloroethane Cracking over Zeolite Catalysts. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c02918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Quan Zhang
- University of Chinese Academy of Sciences, Beijing 100049, China
- National Engineering Research Center of Lower-Carbon Catalysis Technology, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
| | - Wei Huang
- National Engineering Research Center of Lower-Carbon Catalysis Technology, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
| | - Jiacheng Xing
- National Engineering Research Center of Lower-Carbon Catalysis Technology, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
| | - Xingzong Dong
- University of Chinese Academy of Sciences, Beijing 100049, China
- National Engineering Research Center of Lower-Carbon Catalysis Technology, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
| | - Guangye Liu
- National Engineering Research Center of Lower-Carbon Catalysis Technology, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
| | - Yunpeng Xu
- National Engineering Research Center of Lower-Carbon Catalysis Technology, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
| | - Zhongmin Liu
- University of Chinese Academy of Sciences, Beijing 100049, China
- National Engineering Research Center of Lower-Carbon Catalysis Technology, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
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M/C3N4/AC (M = Au, Pt, Ru)-catalyzed acetylene coupling with ethylene dichloride: How effective are the bifunctionalities? CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(21)63913-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Sun Y, Li M, Qu X, Zheng S, Alvarez PJJ, Fu H. Efficient Reduction of Selenite to Elemental Selenium by Liquid-Phase Catalytic Hydrogenation Using a Highly Stable Multiwalled Carbon Nanotube-Supported Pt Catalyst Coated by N-Doped Carbon. ACS APPLIED MATERIALS & INTERFACES 2021; 13:29541-29550. [PMID: 34133112 DOI: 10.1021/acsami.1c05101] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
A stable catalyst, Pt/carbon nanotube (CNT) coated with N-doped carbon (Pt/CNT@CN), was designed to reduce selenite (Se(IV)) in water to elemental selenium by liquid-phase catalytic hydrogenation. Commercial Pt/C, pristine Pt/CNT, and carbon-coated Pt/CNT (Pt/CNT@C) were used for benchmarking. The Pt particles in Pt/CNT@CN were completely embedded beneath the coatings to minimize leaching and were not easily accessible to Se(IV). However, Schottky-Mott-type metal-carbon junctions that activate H2 were formed on the coated catalyst, facilitating effective reduction of Se(IV). The initial activity of Pt/CNT@CN (900.5 mg L-1 gcat-1 h-1) was two times higher than that of commercial Pt/C (448.6 mg L-1 gcat-1 h-1). The commercial Pt/C and uncoated Pt/CNT lost their initial activities during reuse and were almost inactive after 10 cycles due to significant Pt leaching (>90%) during the reaction and acid-washing regeneration processes. Pt/CNT@CN maintained 33% of the initial activity after the first cycle and stabilized over the following 9 cycles due to effective protection of Pt particles by carbon coatings. After 10 cycles, the activity of Pt/CNT@CN was over 20 times higher than that of Pt/C and uncoated Pt/CNT. Overall, catalytic hydrogenation using carbon-coated-supported Pt catalysts is an effective and promising approach to remove Se(IV) in water.
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Affiliation(s)
- Yuhan Sun
- State Key Laboratory of Pollution Control and Resource Reuse/School of the Environment, Nanjing University, Nanjing, Jiangsu 210046, China
| | - Minghui Li
- State Key Laboratory of Pollution Control and Resource Reuse/School of the Environment, Nanjing University, Nanjing, Jiangsu 210046, China
| | - Xiaolei Qu
- State Key Laboratory of Pollution Control and Resource Reuse/School of the Environment, Nanjing University, Nanjing, Jiangsu 210046, China
| | - Shourong Zheng
- State Key Laboratory of Pollution Control and Resource Reuse/School of the Environment, Nanjing University, Nanjing, Jiangsu 210046, China
| | - Pedro J J Alvarez
- Department of Civil and Environmental Engineering, Rice University, Houston, Texas 77005, United States
| | - Heyun Fu
- State Key Laboratory of Pollution Control and Resource Reuse/School of the Environment, Nanjing University, Nanjing, Jiangsu 210046, China
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Abstract
Catalytic hydrodechlorination (HDC) is a technology with great potential for the treatment and valorization of organic chlorinated wastes [...]
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Ma H, Ma G, Qi Y, Wang Y, Chen Q, Rout KR, Fuglerud T, Chen D. Nitrogen-Doped Carbon-Assisted One-pot Tandem Reaction for Vinyl Chloride Production via Ethylene Oxychlorination. Angew Chem Int Ed Engl 2020; 59:22080-22085. [PMID: 32786102 PMCID: PMC7756741 DOI: 10.1002/anie.202006729] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 07/22/2020] [Indexed: 11/25/2022]
Abstract
A bifunctional catalyst comprising CuCl2 /Al2 O3 and nitrogen-doped carbon was developed for an efficient one-pot ethylene oxychlorination process to produce vinyl chloride monomer (VCM) up to 76 % yield at 250 °C and under ambient pressure, which is higher than the conventional industrial two-step process (≈50 %) in a single pass. In the second bed, active sites containing N-functional groups on the metal-free N-doped carbon catalyzed both ethylene oxychlorination and ethylene dichloride (EDC) dehydrochlorination under the mild conditions. Benefitting from the bifunctionality of the N-doped carbon, VCM formation was intensified by the surface Cl*-looping of EDC dehydrochlorination and ethylene oxychlorination. Both reactions were enhanced by in situ consumption of surface Cl* by oxychlorination, in which Cl* was generated by EDC dehydrochlorination. This work offers a promising alternative pathway to VCM production via ethylene oxychlorination at mild conditions through a single pass reactor.
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Affiliation(s)
- Hongfei Ma
- Department of Chemical EngineeringNorwegian University of Science and Technology (NTNU)Sem sælands vei 47491TrondheimNorway
| | - Guoyan Ma
- College of Chemistry and Chemical EngineeringXi'an Shiyou UniversityXi'an710065ShaanxiChina
- Shaanxi Key Laboratory of Carbon Dioxide Sequestration and Enhanced Oil Recovery (under planning)Xi'an710065ShaanxiChina
| | - Yanying Qi
- Department of Chemical EngineeringNorwegian University of Science and Technology (NTNU)Sem sælands vei 47491TrondheimNorway
| | - Yalan Wang
- Department of Chemical EngineeringNorwegian University of Science and Technology (NTNU)Sem sælands vei 47491TrondheimNorway
| | - Qingjun Chen
- Department of Chemical EngineeringNorwegian University of Science and Technology (NTNU)Sem sælands vei 47491TrondheimNorway
| | - Kumar R. Rout
- Department of Chemical EngineeringNorwegian University of Science and Technology (NTNU)Sem sælands vei 47491TrondheimNorway
- Sintef IndustrySem sælands vei 2A7491TrondheimNorway
| | | | - De Chen
- Department of Chemical EngineeringNorwegian University of Science and Technology (NTNU)Sem sælands vei 47491TrondheimNorway
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Ma H, Ma G, Qi Y, Wang Y, Chen Q, Rout KR, Fuglerud T, Chen D. Nitrogen‐Doped Carbon‐Assisted One‐pot Tandem Reaction for Vinyl Chloride Production via Ethylene Oxychlorination. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202006729] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Hongfei Ma
- Department of Chemical Engineering Norwegian University of Science and Technology (NTNU) Sem sælands vei 4 7491 Trondheim Norway
| | - Guoyan Ma
- College of Chemistry and Chemical Engineering Xi'an Shiyou University Xi'an 710065 Shaanxi China
- Shaanxi Key Laboratory of Carbon Dioxide Sequestration and Enhanced Oil Recovery (under planning) Xi'an 710065 Shaanxi China
| | - Yanying Qi
- Department of Chemical Engineering Norwegian University of Science and Technology (NTNU) Sem sælands vei 4 7491 Trondheim Norway
| | - Yalan Wang
- Department of Chemical Engineering Norwegian University of Science and Technology (NTNU) Sem sælands vei 4 7491 Trondheim Norway
| | - Qingjun Chen
- Department of Chemical Engineering Norwegian University of Science and Technology (NTNU) Sem sælands vei 4 7491 Trondheim Norway
| | - Kumar R. Rout
- Department of Chemical Engineering Norwegian University of Science and Technology (NTNU) Sem sælands vei 4 7491 Trondheim Norway
- Sintef Industry Sem sælands vei 2A 7491 Trondheim Norway
| | | | - De Chen
- Department of Chemical Engineering Norwegian University of Science and Technology (NTNU) Sem sælands vei 4 7491 Trondheim Norway
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