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He Y, Chen J, Mo Z, Hu C, Li D, Tu J, Lin C, Wang Y, Liu D, Wang T. Controlling Diels-Alder reactions in catalytic pyrolysis of sawdust and polypropylene by coupling CO 2 atmosphere and Fe-modified zeolite for enhanced light aromatics production. JOURNAL OF HAZARDOUS MATERIALS 2023; 455:131547. [PMID: 37156047 DOI: 10.1016/j.jhazmat.2023.131547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 04/28/2023] [Accepted: 04/29/2023] [Indexed: 05/10/2023]
Abstract
Producing value-added light aromatics (BTEX) from solid waste streams holds excellent promise for resource recovery. Here we present a thermochemical conversion approach that enhanced BTEX production by coupling CO2 atmosphere and Fe-modified HZSM-5 zeolite to facilitate the Diels-Alder reactions in catalytic pyrolysis of sawdust and polypropylene. The Diels-Alder reactions between sawdust-derived furans and polypropylene-derived olefins could be controlled by tuning CO2 concentration and Fe loading amount. Sufficient CO2 (≥50%) with moderate Fe loading (10 wt%) were observed to produce more BTEX and fewer heavy fractions (C9+aromatics). To deepen the mechanistic understanding, quantification of polycyclic aromatic hydrocarbons (PAHs) and catalyst coke was further conducted. The co-use of CO2 atmosphere and Fe modification suppressed the appearance of low-, medium-, and high-membered ring PAHs by over 40%, decreased pyrolysis oil toxicity from 42.1 to 12.8 μg/goil TEQ, and transformed coke from "hard" to "soft". Based on the characterization of CO2 adsorption behavior, it was deduced that the introduced CO2 was activated by loaded Fe and reacted in situ with H2 generated during aromatization to expedite H-transfer. Meanwhile, BTEX recondensation was prevented through the Boudouard reactions of CO2 and water-gas reactions between the resulting water and carbon deposits. These synergistically enhanced the production of BTEX and suppressed the formation of heavy species, including PAHs and catalyst coke.
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Affiliation(s)
- Yao He
- School of Environmental Science and Technology, Guangdong University of Technology, Guangzhou 510006, China
| | - Junjie Chen
- School of Environmental Science and Technology, Guangdong University of Technology, Guangzhou 510006, China
| | - Ziming Mo
- School of Environmental Science and Technology, Guangdong University of Technology, Guangzhou 510006, China
| | - Changsong Hu
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China.
| | - Detao Li
- School of Environmental Science and Technology, Guangdong University of Technology, Guangzhou 510006, China
| | - Jianhua Tu
- School of Environmental Science and Technology, Guangdong University of Technology, Guangzhou 510006, China
| | - Chen Lin
- School of Environmental Science and Technology, Guangdong University of Technology, Guangzhou 510006, China
| | - Yi Wang
- School of Environmental Science and Technology, Guangdong University of Technology, Guangzhou 510006, China
| | - Dongxia Liu
- Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD 20742, USA
| | - Tiejun Wang
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China.
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Ethylbenzene oxidation over KIT-6 mesoporous silica-based hybrid supported catalysts. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-021-02825-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Chaudhary V, Sharma S. Study of ethylbenzene oxidation over polymer-silica hybrid supported Co (II) and Cu (II) complexes. Catal Today 2021. [DOI: 10.1016/j.cattod.2020.02.043] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Najfach AJ, Almquist CB, Edelmann RE. Effect of Manganese and zeolite composition on zeolite-supported Ni-catalysts for dry reforming of methane. Catal Today 2021. [DOI: 10.1016/j.cattod.2020.07.058] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Gokhale TA, Raut AB, Bhanage BM. Comparative account of catalytic activity of Ru- and Ni-based nanocomposites towards reductive amination of biomass derived molecules. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111667] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Promising Catalytic Systems for CO2 Hydrogenation into CH4: A Review of Recent Studies. Processes (Basel) 2020. [DOI: 10.3390/pr8121646] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
The increasing utilization of renewable sources for electricity production turns CO2 methanation into a key process in the future energy context, as this reaction allows storing the temporary renewable electricity surplus in the natural gas network (Power-to-Gas). This kind of chemical reaction requires the use of a catalyst and thus it has gained the attention of many researchers thriving to achieve active, selective and stable materials in a remarkable number of studies. The existing papers published in literature in the past few years about CO2 methanation tackled the catalysts composition and their related performances and mechanisms, which served as a basis for researchers to further extend their in-depth investigations in the reported systems. In summary, the focus was mainly in the enhancement of the synthesized materials that involved the active metal phase (i.e., boosting its dispersion), the different types of solid supports, and the frequent addition of a second metal oxide (usually behaving as a promoter). The current manuscript aims in recapping a huge number of trials and is divided based on the support nature: SiO2, Al2O3, CeO2, ZrO2, MgO, hydrotalcites, carbons and zeolites, and proposes the main properties to be kept for obtaining highly efficient carbon dioxide methanation catalysts.
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Chaudhary V, Sharma S. Synthesis of polymer‐silica hybrid‐supported catalysts for solvent‐free oxidation of ethylbenzene with TBHP. ASIA-PAC J CHEM ENG 2020. [DOI: 10.1002/apj.2441] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Vasu Chaudhary
- Department of Chemical Engineering and TechnologyIndian Institute of Technology (BHU) Varanasi India
| | - Sweta Sharma
- Department of Chemical Engineering and TechnologyIndian Institute of Technology (BHU) Varanasi India
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He Y, Chen S, Chen J, Liu D, Ning X, Liu J, Wang T. Consequence of replacing nitrogen with carbon dioxide as atmosphere on suppressing the formation of polycyclic aromatic hydrocarbons in catalytic pyrolysis of sawdust. BIORESOURCE TECHNOLOGY 2020; 297:122417. [PMID: 31759856 DOI: 10.1016/j.biortech.2019.122417] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Revised: 11/07/2019] [Accepted: 11/09/2019] [Indexed: 06/10/2023]
Abstract
This study evaluates the effect of replacement of N2 with CO2 as atmosphere in catalytic pyrolysis of waste lignocellulosics with acidic and metal-modified zeolites, respectively, on the 16 EPA priority pollutant polycyclic aromatic hydrocarbons (PAHs) in bio-oils. By coupling solid phase extraction pretreatment with single ion monitoring detection, it is found that the replacement alleviates PAHs in bio-oil concerning synchronously abating the 16 PAHs with low, medium and high molecular weights, and the benzo[a]pyrene equivalent toxicity of bio-oil decreases. Meanwhile, CO2 decreases the content of small oxygenates, e.g. furans, ketones, acids, and increases phenolics and aromatics affording more stable and valuable bio-oils. Moreover, CO2 enhances carbon conversion efficiency, especially in combination with Fe-modified zeolite, which presents a synergistic effect. This study indicates the practical application of CO2 as an atmosphere in catalytic pyrolysis to improve the bio-oil quality by suppressing PAHs formation and adjusting compound constituent.
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Affiliation(s)
- Yao He
- Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China; Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD 20742, USA
| | - Si Chen
- Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Junjie Chen
- Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Dongxia Liu
- Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD 20742, USA
| | - Xunan Ning
- Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Jingyong Liu
- Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Tiejun Wang
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China.
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Kasar GB, Medhekar RS, Bhosale PN, Rode CV. Kinetics of Hydrogenation of Aqueous Levulinic Acid over Bimetallic Ru–Ni/MMT Catalyst. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b03748] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Gayatri B. Kasar
- Chemical Engineering and Process Development Division, CSIR-NCL, Dr. Homi Bhabha Road, Pashan, Pune-411008, India
- Materials Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur-416004, India
| | - Rucha S. Medhekar
- Chemical Engineering and Process Development Division, CSIR-NCL, Dr. Homi Bhabha Road, Pashan, Pune-411008, India
| | - P. N. Bhosale
- Materials Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur-416004, India
| | - Chandrashekhar V. Rode
- Chemical Engineering and Process Development Division, CSIR-NCL, Dr. Homi Bhabha Road, Pashan, Pune-411008, India
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Kokel A, Schäfer C, Török B. Organic Synthesis Using Environmentally Benign Acid Catalysis. Curr Org Synth 2019; 16:615-649. [PMID: 31984932 PMCID: PMC7432199 DOI: 10.2174/1570179416666190206141028] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 11/28/2018] [Accepted: 01/11/2019] [Indexed: 11/22/2022]
Abstract
Recent advances in the application of environmentally benign acid catalysts in organic synthesis are reviewed. The work includes three main parts; (i) description of environmentally benign acid catalysts, (ii) synthesis with heterogeneous and (iii) homogeneous catalysts. The first part provides a brief overview of acid catalysts, both solid acids (metal oxides, zeolites, clays, ion-exchange resins, metal-organic framework based catalysts) and those that are soluble in green solvents (water, alcohols) and at the same time could be regenerated after reactions (metal triflates, heteropoly acids, acidic organocatalysts etc.). The synthesis sections review a broad array of the most common and practical reactions such as Friedel-Crafts and related reactions (acylation, alkylations, hydroxyalkylations, halogenations, nitrations etc.), multicomponent reactions, rearrangements and ring transformations (cyclizations, ring opening). Both the heterogeneous and homogeneous catalytic synthesis parts include an overview of asymmetric acid catalysis with chiral Lewis and Brønsted acids. Although a broad array of catalytic processes are discussed, emphasis is placed on applications with commercially available catalysts as well as those of sustainable nature; thus individual examples are critically reviewed regarding their contribution to sustainable synthesis.
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Affiliation(s)
- Anne Kokel
- Department of Chemistry, University of Massachusetts Boston, 100 Morissey Blvd., Boston, MA02125, USA
| | - Christian Schäfer
- Department of Chemistry, University of Massachusetts Boston, 100 Morissey Blvd., Boston, MA02125, USA
| | - Béla Török
- Department of Chemistry, University of Massachusetts Boston, 100 Morissey Blvd., Boston, MA02125, USA
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Effect of Redox and Acid Properties of Ga–H-ZSM-5 Nanophase Catalysts Modified by Transition Metals on the Reduction of Nitrous Oxide by Methane. THEOR EXP CHEM+ 2018. [DOI: 10.1007/s11237-018-9570-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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