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Liu J, Dong F, Huang Y, Fu Y, Lu X, Ma R, Zhang F, Wang S, Zhu W. Ce-doped TiO 2 supported RuO 2 as efficient catalysts for the oxidation of HCl to Cl 2. J Environ Sci (China) 2025; 149:234-241. [PMID: 39181638 DOI: 10.1016/j.jes.2024.01.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 12/07/2023] [Accepted: 01/05/2024] [Indexed: 08/27/2024]
Abstract
Reducing the cost of RuO2/TiO2 catalysts is still one of the urgent challenges in catalytic HCl oxidation. In the present work, a Ce-doped TiO2 supported RuO2 catalyst with a low Ru loading was developed, showing a high activity in the catalytic oxidation of HCl to Cl2. The results on some extensive characterizations of both Ce-doped TiO2 carriers and their supported RuO2 catalysts show that the doping of Ce into TiO2 can effectively change the lattice parameters of TiO2 to improve the dispersion of the active RuO2 species on the carrier, which facilitates the production of surface Ru species to expose more active sites for boosting the catalytic performance even under some harsh reaction conditions. This work provides some scientific basis and technical support for chlorine recycling.
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Affiliation(s)
- Jiahui Liu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals, Zhejiang Normal University, Jinhua 321004, China
| | - Fangyuan Dong
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals, Zhejiang Normal University, Jinhua 321004, China
| | - Yaqi Huang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals, Zhejiang Normal University, Jinhua 321004, China
| | - Yanghe Fu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals, Zhejiang Normal University, Jinhua 321004, China.
| | - Xinqing Lu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals, Zhejiang Normal University, Jinhua 321004, China
| | - Rui Ma
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals, Zhejiang Normal University, Jinhua 321004, China
| | - Fumin Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals, Zhejiang Normal University, Jinhua 321004, China
| | - Shuhua Wang
- National Engineering Technology Research Center of Fluoro-Materials, Zhejiang Juhua Technology Center Co., Ltd., Quzhou 324004, China
| | - Weidong Zhu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals, Zhejiang Normal University, Jinhua 321004, China.
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2
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Ahasan MR, Wang R. CeO 2 nanorods supported CuO x-RuO x bimetallic catalysts for low temperature CO oxidation. J Colloid Interface Sci 2024; 654:1378-1392. [PMID: 37918097 DOI: 10.1016/j.jcis.2023.10.113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 09/30/2023] [Accepted: 10/21/2023] [Indexed: 11/04/2023]
Abstract
Bimetallic catalysts often outperform monometallic catalysts due to changeable structural orientation, synergistic effects, and integration of two different metal or metal oxide properties. Here, a series of CeO2 nanorods (NR) supported bimetallic CuOx and RuOx catalysts (Cu: Ru ratios of 9:1, 7:3, and 5:5) were prepared using a wet impregnation method. In situ DRIFTS, H2 temperature programmed reduction (H2-TPR), CO temperature programmed desorption (CO-TPD), and other characterization techniques were used to investigate the effect of the Cu:Ru ratio on the activity of low-temperature CO oxidation. Among three catalysts, CeO2 NR supported 7 wt% Cu-3 wt% Ru catalyst after a reduction activation treatment showed the best performance with 100 % CO conversion at 166 °C and the lowest activation energy of 18.37 kJ mol-1. Raman and XPS profiles revealed that the origin of the superior performance is at least partially related to the high surface oxygen vacancy concentration and other distinct oxygen species (physi-/chemi-sorbed oxygen and bulk lattice oxygen), leading to outstanding adsorption and oxidation property of CO.
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Affiliation(s)
- Md Robayet Ahasan
- Department of Metallurgical and Materials Engineering, The University of Alabama, Tuscaloosa, AL 35487, United States
| | - Ruigang Wang
- Department of Metallurgical and Materials Engineering, The University of Alabama, Tuscaloosa, AL 35487, United States.
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Aneggi E, Campagnolo F, Segato J, Zuccaccia D, Baratta W, Llorca J, Trovarelli A. Solvent-free selective oxidation of benzyl alcohol using Ru loaded ceria-zirconia catalysts. MOLECULAR CATALYSIS 2023. [DOI: 10.1016/j.mcat.2023.113049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
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4
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Chen X, Jia Z, Liu Z, Wang X, Liang M. Strong metal-support interactions between atomically dispersed Ru and CrO x for improved durability of chlorobenzene oxidation. RSC Adv 2023; 13:3255-3264. [PMID: 36756428 PMCID: PMC9890632 DOI: 10.1039/d2ra07650k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 01/08/2023] [Indexed: 01/26/2023] Open
Abstract
In this work, two single-atom catalysts (SACs) with atomically dispersed RuO2 supported on CrO x were successfully synthesized with a simple reduction strategy for the efficient catalytic oxidation of chlorobenzene (CB). With characterizations like Cs-corrected STEM, XPS, H2-TPR, and O2-TPD, the structure-activity relationship is addressed. The noble metal precursor Ru3+ was anchored with different oxygen species and exposed facets based on the physicochemical properties of catalyst supports. Based on the analysis results, the Ru3+ precursor could be mainly anchored into the surface lattice oxygen of Cr2O3-M over high-index facets (223) and adsorbed oxygen of Cr2O3-P over low-index facets (104), where the precursor Ru3+ was all oxidized to RuO2 when being anchored with the oxygen species of Cr2O3-M and Cr2O3-P, respectively according to XPS analysis. There is a stronger metal-support interaction (SMSI) between Ru ions and the surface lattice oxygen of Cr2O3-M, according to H2-TPR and O2-TPD characterizations. Further, the catalytic performance for CB combustion at a high space velocity of 120 000 mL (g-1 h-1) was tested, and 1RuCr2O3-M performed better than 1RuCr2O3-P in both durability and activity. This could be attributed to the SMSI between single-atom Ru and the lattice oxygen of the 1RuCr2O3-M catalyst and the abundant active sites from the exposed high-index facets. The study provided a novel synthesis strategy for Ru-based SACs with SMSI effect, and the good durability of the catalyst (1RuCr2O3-M) extended the great potential for practical application.
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Affiliation(s)
- Xi Chen
- College of Environmental Science and Engineering, Taiyuan University of Technology Taiyuan China
| | - Ziliang Jia
- College of Environmental Science and Engineering, Taiyuan University of Technology Taiyuan China
| | - Zhihong Liu
- College of Environmental Science and Engineering, Taiyuan University of Technology Taiyuan China
| | - Xiaoyan Wang
- College of Environmental Science and Engineering, Taiyuan University of Technology Taiyuan China
| | - Meisheng Liang
- College of Environmental Science and Engineering, Taiyuan University of Technology Taiyuan China
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5
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Eco-Friendly Natural Clay: Montmorillonite Modified with Nickel or Ruthenium as an Effective Catalyst in Gamma-Valerolactone Synthesis. Catal Letters 2022. [DOI: 10.1007/s10562-021-03740-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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6
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Gong Y, Liu R, Jiang L, Peng A, Xu C, Lu X, Ma R, Fu Y, Zhu W, Wang S, Zhou L. Catalyst Development for HCl Oxidation to Cl2 in the Fluorochemical Industry. ACS Catal 2022. [DOI: 10.1021/acscatal.1c04783] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yufeng Gong
- Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals, Institute of Advanced Fluorine-Containing Materials, Zhejiang Normal University, 321004 Jinhua, People’s Republic of China
| | - Ruixin Liu
- Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals, Institute of Advanced Fluorine-Containing Materials, Zhejiang Normal University, 321004 Jinhua, People’s Republic of China
| | - Lingyan Jiang
- Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals, Institute of Advanced Fluorine-Containing Materials, Zhejiang Normal University, 321004 Jinhua, People’s Republic of China
| | - Anna Peng
- Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals, Institute of Advanced Fluorine-Containing Materials, Zhejiang Normal University, 321004 Jinhua, People’s Republic of China
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, Zhejiang Normal University, 321004 Jinhua, People’s Republic of China
| | - Chunhui Xu
- Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals, Institute of Advanced Fluorine-Containing Materials, Zhejiang Normal University, 321004 Jinhua, People’s Republic of China
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, Zhejiang Normal University, 321004 Jinhua, People’s Republic of China
| | - Xinqing Lu
- Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals, Institute of Advanced Fluorine-Containing Materials, Zhejiang Normal University, 321004 Jinhua, People’s Republic of China
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, Zhejiang Normal University, 321004 Jinhua, People’s Republic of China
| | - Rui Ma
- Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals, Institute of Advanced Fluorine-Containing Materials, Zhejiang Normal University, 321004 Jinhua, People’s Republic of China
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, Zhejiang Normal University, 321004 Jinhua, People’s Republic of China
| | - Yanghe Fu
- Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals, Institute of Advanced Fluorine-Containing Materials, Zhejiang Normal University, 321004 Jinhua, People’s Republic of China
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, Zhejiang Normal University, 321004 Jinhua, People’s Republic of China
| | - Weidong Zhu
- Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals, Institute of Advanced Fluorine-Containing Materials, Zhejiang Normal University, 321004 Jinhua, People’s Republic of China
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, Zhejiang Normal University, 321004 Jinhua, People’s Republic of China
- National Engineering Technology Research Center of Fluoro-Materials, Zhejiang Juhua Technology Center Co., Ltd., 324004 Quzhou, People’s Republic of China
| | - Shuhua Wang
- National Engineering Technology Research Center of Fluoro-Materials, Zhejiang Juhua Technology Center Co., Ltd., 324004 Quzhou, People’s Republic of China
| | - Liyang Zhou
- National Engineering Technology Research Center of Fluoro-Materials, Zhejiang Juhua Technology Center Co., Ltd., 324004 Quzhou, People’s Republic of China
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7
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Li S, Xu B, Wang Y, Liu Y, Lu X, Ma R, Fu Y, Wang S, Zhou L, Zhu W. Insight into the effects of calcination temperature on the structure and performance of RuO 2/TiO 2 in the Deacon process. Catal Sci Technol 2022. [DOI: 10.1039/d2cy00812b] [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
With an appropriate calcination temperature for preparing a rutile-TiO2 supported RuO2 catalyst, rich surface RuO2 species can be formed on TiO2, leading to its high activity in the oxidation of HCl.
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Affiliation(s)
- Siyao Li
- Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals, Institute of Advanced Fluorine-Containing Materials, Zhejiang Normal University, 321004 Jinhua, People's Republic of China
| | - Bowen Xu
- Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals, Institute of Advanced Fluorine-Containing Materials, Zhejiang Normal University, 321004 Jinhua, People's Republic of China
| | - Yuexia Wang
- Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals, Institute of Advanced Fluorine-Containing Materials, Zhejiang Normal University, 321004 Jinhua, People's Republic of China
| | - Yupei Liu
- Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals, Institute of Advanced Fluorine-Containing Materials, Zhejiang Normal University, 321004 Jinhua, People's Republic of China
| | - Xinqing Lu
- Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals, Institute of Advanced Fluorine-Containing Materials, Zhejiang Normal University, 321004 Jinhua, People's Republic of China
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, Zhejiang Normal University, 321004 Jinhua, People's Republic of China
| | - Rui Ma
- Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals, Institute of Advanced Fluorine-Containing Materials, Zhejiang Normal University, 321004 Jinhua, People's Republic of China
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, Zhejiang Normal University, 321004 Jinhua, People's Republic of China
| | - Yanghe Fu
- Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals, Institute of Advanced Fluorine-Containing Materials, Zhejiang Normal University, 321004 Jinhua, People's Republic of China
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, Zhejiang Normal University, 321004 Jinhua, People's Republic of China
| | - Shuhua Wang
- National Engineering Technology Research Center of Fluoro-Materials, Zhejiang Juhua Technology Center Co., Ltd., 324004 Quzhou, People's Republic of China
| | - Liyang Zhou
- National Engineering Technology Research Center of Fluoro-Materials, Zhejiang Juhua Technology Center Co., Ltd., 324004 Quzhou, People's Republic of China
| | - Weidong Zhu
- Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals, Institute of Advanced Fluorine-Containing Materials, Zhejiang Normal University, 321004 Jinhua, People's Republic of China
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, Zhejiang Normal University, 321004 Jinhua, People's Republic of China
- National Engineering Technology Research Center of Fluoro-Materials, Zhejiang Juhua Technology Center Co., Ltd., 324004 Quzhou, People's Republic of China
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8
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Rath T, Deitermann M, Zhao G, Wilma Busser G, Jansen H, Schwiderowski P, Xia W, Muhler M. Photocatalytic Deacon Reaction over SrTiO
3. CHEMPHOTOCHEM 2021. [DOI: 10.1002/cptc.202000314] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Tobias Rath
- Laboratory of Industrial Chemistry Ruhr University Bochum Universitätsstraße 150 44801 Bochum Germany
| | - Michel Deitermann
- Laboratory of Industrial Chemistry Ruhr University Bochum Universitätsstraße 150 44801 Bochum Germany
| | - Guixia Zhao
- Laboratory of Industrial Chemistry Ruhr University Bochum Universitätsstraße 150 44801 Bochum Germany
- College of Environmental Science and Engineering North China Electric Power University 102206 Beijing P. R. China
| | - G. Wilma Busser
- Laboratory of Industrial Chemistry Ruhr University Bochum Universitätsstraße 150 44801 Bochum Germany
| | - Henning Jansen
- Laboratory of Industrial Chemistry Ruhr University Bochum Universitätsstraße 150 44801 Bochum Germany
| | - Philipp Schwiderowski
- Laboratory of Industrial Chemistry Ruhr University Bochum Universitätsstraße 150 44801 Bochum Germany
| | - Wei Xia
- Laboratory of Industrial Chemistry Ruhr University Bochum Universitätsstraße 150 44801 Bochum Germany
| | - Martin Muhler
- Laboratory of Industrial Chemistry Ruhr University Bochum Universitätsstraße 150 44801 Bochum Germany
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9
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Turning Carbon Dioxide and Ethane into Ethanol by Solar-Driven Heterogeneous Photocatalysis over RuO2- and NiO-co-Doped SrTiO3. Catalysts 2021. [DOI: 10.3390/catal11040461] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
The current work focused on the sunlight-driven thermo-photocatalytic reduction of carbon dioxide (CO2), the primary greenhouse gas, by ethane (C2H6), the second most abundant element in shale gas, aiming at the generation of ethanol (EtOH), a renewable fuel. To promote this process, a hybrid catalyst was prepared and properly characterized, comprising of strontium titanate (SrTiO3) co-doped with ruthenium oxide (RuO2) and nickel oxide (NiO). The photocatalytic activity towards EtOH production was assessed in batch-mode and at gas-phase, under the influence of different conditions: (i) dopant loading; (ii) temperature; (iii) optical radiation wavelength; (vi) consecutive uses; and (v) electron scavenger addition. From the results here obtained, it was found that: (i) the functionalization of the SrTiO3 with RuO2 and NiO allows the visible light harvest and narrows the band gap energy (ca. 14–20%); (ii) the selectivity towards EtOH depends on the presence of Ni and irradiation; (iii) the catalyst photoresponse is mainly due to the visible photons; (iv) the photocatalyst loses > 50% efficiency right after the 2nd use; (v) the reaction mechanism is based on the photogenerated electron-hole pair charge separation; and (vi) a maximum yield of 64 μmol EtOH gcat−1 was obtained after 45-min (85 μmol EtOH gcat−1 h−1) of simulated solar irradiation (1000 W m−2) at 200 °C, using 0.4 g L−1 of SrTiO3:RuO2:NiO (0.8 wt.% Ru) with [CO2]:[C2H6] and [Ru]:[Ni] molar ratios of 1:3 and 1:1, respectively. Notwithstanding, despite its exploratory nature, this study offers an alternative route to solar fuels’ synthesis from the underutilized C2H6 and CO2.
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10
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Effects of the Support-Crystal Size on the Catalytic Performance of RuO2/TiO2 in the Deacon Process. Catal Letters 2021. [DOI: 10.1007/s10562-020-03493-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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11
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Liu Y, Li S, Lu X, Ma R, Fu Y, Wang S, Zhou L, Zhu W. Insights into the sintering resistance of RuO2/TiO2–SiO2 in the Deacon process: role of SiO2. Catal Sci Technol 2021. [DOI: 10.1039/d1cy01023a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
RuO2 nanoparticles are still formed on the surface of TiO2 to prevent the thermal sintering because of the geometric effects of SiO2 and the resultant RuO2/TiO2–SiO2 catalyst has an improved stability in the Deacon process.
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Affiliation(s)
- Yupei Liu
- Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals
- Institute of Advanced Fluorine-Containing Materials
- Zhejiang Normal University
- 321004 Jinhua
- People's Republic of China
| | - Siyao Li
- Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals
- Institute of Advanced Fluorine-Containing Materials
- Zhejiang Normal University
- 321004 Jinhua
- People's Republic of China
| | - Xinqing Lu
- Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals
- Institute of Advanced Fluorine-Containing Materials
- Zhejiang Normal University
- 321004 Jinhua
- People's Republic of China
| | - Rui Ma
- Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals
- Institute of Advanced Fluorine-Containing Materials
- Zhejiang Normal University
- 321004 Jinhua
- People's Republic of China
| | - Yanghe Fu
- Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals
- Institute of Advanced Fluorine-Containing Materials
- Zhejiang Normal University
- 321004 Jinhua
- People's Republic of China
| | - Shuhua Wang
- National Engineering Technology Research Center of Fluoro-Materials
- Zhejiang Juhua Technology Center Co., Ltd
- 324004 Quzhou
- People's Republic of China
| | - Liyang Zhou
- National Engineering Technology Research Center of Fluoro-Materials
- Zhejiang Juhua Technology Center Co., Ltd
- 324004 Quzhou
- People's Republic of China
| | - Weidong Zhu
- Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals
- Institute of Advanced Fluorine-Containing Materials
- Zhejiang Normal University
- 321004 Jinhua
- People's Republic of China
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Abstract
It is not an exaggerated fact that the semiconductor titanium dioxide (TiO2) has been evolved as a prototypical material to understand the photocatalytic process and has been demonstrated for various photocatalytic applications such as pollutants degradation, water splitting, heavy metal reduction, CO2 conversion, N2 fixation, bacterial disinfection, etc [...]
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Huang J, Hou M, Wang J, Teng X, Niu Y, Xu M, Chen Z. RuO2 nanoparticles decorate belt-like anatase TiO2 for highly efficient chlorine evolution. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.135878] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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14
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HCl Removal Using Calcined Ca–Mg–Al Layered Double Hydroxide in the Presence of CO2 at Medium–High Temperature. Catalysts 2019. [DOI: 10.3390/catal10010022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
This present work aimed to investigate the influence of CO2 on HCl removal using calcined Ca–Mg–Al layered double hydroxides (CaMgAl-LDHs) at medium–high temperature (400–800 °C) in a fixed-bed reactor. It was revealed that a moderate CO2 concentration (~6%) in the flue gas of the municipal solid-waste incinerators could reduce the HCl capacity of the CaMgAl-layered double oxides (CaMgAl-LDOs). The highest capacity for HCl removal was observed over the CaMgAl-LDOs at 600 °C. However, sintering was also detected when the reaction temperature was below the calcination temperature (600 °C). Moreover, the decreasing HCl adsorption capacity of CaMgAl-LDOs was attributed to the existence of CO2 in the flue gas, which could efficiently inhibit the decomposition of carbonates as well as the conversion into metal chloride during the HCl removal process.
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