Recycling of Gas Phase Residual Dichloromethane by Hydrodechlorination: Regeneration of Deactivated Pd/C Catalysts
Dichloromethane (DCM) is an important pollutant with very harmful effects on human health and the environment. Catalytic hydrodechlorination (HDC) is an environmentally friendly technology for its removal from gas streams; it avoids the formation of hazardous pollutants like dioxins and phosgene (pr...
Gespeichert in:
Veröffentlicht in: | Catalysts 2019-09, Vol.9 (9), p.733 |
---|---|
Hauptverfasser: | , , , , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
container_end_page | |
---|---|
container_issue | 9 |
container_start_page | 733 |
container_title | Catalysts |
container_volume | 9 |
creator | Liu, Sichen Martin-Martinez, María Álvarez-Montero, María Ariadna Arevalo-Bastante, Alejandra Rodriguez, Juan José Gómez-Sainero, Luisa María |
description | Dichloromethane (DCM) is an important pollutant with very harmful effects on human health and the environment. Catalytic hydrodechlorination (HDC) is an environmentally friendly technology for its removal from gas streams; it avoids the formation of hazardous pollutants like dioxins and phosgene (produced by other techniques), and the products obtained can be reused in other industries. When compared to other precious metals, Pd/C catalyst exhibited a better catalytic activity. However, the catalyst showed a significant deactivation during the reaction. In this study, the oxidation state and particle size of Pd was monitored with time on stream in order to elucidate the transformations that the catalyst undergoes during HDC. The deactivation can be ascribed to the formation of a new PdCx phase during the first hour of reaction. Carbon atoms incorporated to Pd lattice come from (chloro)-hydrocarbons adsorbed in the metallic species, whose transformation is promoted by the HCl originating in the reaction. Nevertheless, the catalyst was regenerated by air flow treatment at 250 °C, recovering the catalyst more than 80% of initial DCM conversion. |
doi_str_mv | 10.3390/catal9090733 |
format | Article |
fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_journals_2547581946</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2547581946</sourcerecordid><originalsourceid>FETCH-LOGICAL-c301t-50809421869bacd6a64989a2e089e449c7a27ecfbfc34ab23631312344330b9c3</originalsourceid><addsrcrecordid>eNpNUE1PwzAMjRBITGM3fkAkrpTlqx_hhjrYkCYxTXCu3NTdOnXNSDKk_nu6jQO-PNt6frYfIfecPUmp2dRAgFYzzVIpr8hIDBgpqdT1v_yWTLzfsSE0lxmPR8St0fSmbboNtTWdg6erLXika_RNdYSWzhqzba2zewxb6JCWPV30lbMVnvtNB6Gx3fMwsMEO3bk6Sc0QTGh-IGBFV9U0p_npvt4Hf0duamg9Tv5wTL7eXj_zRbT8mL_nL8vISMZDFLOMaSV4lugSTJVAonSmQSDLNCqlTQoiRVOXtZEKSiETySUXw5dSslIbOSYPF92Ds99H9KHY2aPrhpWFiFUaZ1yrZGA9XljGWe8d1sXBNXtwfcFZcTK2-G-s_AUAhWv3</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2547581946</pqid></control><display><type>article</type><title>Recycling of Gas Phase Residual Dichloromethane by Hydrodechlorination: Regeneration of Deactivated Pd/C Catalysts</title><source>Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals</source><source>MDPI - Multidisciplinary Digital Publishing Institute</source><creator>Liu, Sichen ; Martin-Martinez, María ; Álvarez-Montero, María Ariadna ; Arevalo-Bastante, Alejandra ; Rodriguez, Juan José ; Gómez-Sainero, Luisa María</creator><creatorcontrib>Liu, Sichen ; Martin-Martinez, María ; Álvarez-Montero, María Ariadna ; Arevalo-Bastante, Alejandra ; Rodriguez, Juan José ; Gómez-Sainero, Luisa María</creatorcontrib><description>Dichloromethane (DCM) is an important pollutant with very harmful effects on human health and the environment. Catalytic hydrodechlorination (HDC) is an environmentally friendly technology for its removal from gas streams; it avoids the formation of hazardous pollutants like dioxins and phosgene (produced by other techniques), and the products obtained can be reused in other industries. When compared to other precious metals, Pd/C catalyst exhibited a better catalytic activity. However, the catalyst showed a significant deactivation during the reaction. In this study, the oxidation state and particle size of Pd was monitored with time on stream in order to elucidate the transformations that the catalyst undergoes during HDC. The deactivation can be ascribed to the formation of a new PdCx phase during the first hour of reaction. Carbon atoms incorporated to Pd lattice come from (chloro)-hydrocarbons adsorbed in the metallic species, whose transformation is promoted by the HCl originating in the reaction. Nevertheless, the catalyst was regenerated by air flow treatment at 250 °C, recovering the catalyst more than 80% of initial DCM conversion.</description><identifier>ISSN: 2073-4344</identifier><identifier>EISSN: 2073-4344</identifier><identifier>DOI: 10.3390/catal9090733</identifier><language>eng</language><publisher>Basel: MDPI AG</publisher><subject>Adsorption ; Air flow ; Catalysts ; Catalytic activity ; Chemical reactions ; Deactivation ; Dichloromethane ; Dioxins ; Experiments ; Gas streams ; Gases ; Hydrocarbons ; Hydrodechlorination ; Oxidation ; Phosgene ; Poisoning ; Pollutants ; Regeneration ; Spacetime ; Valence ; Vapor phases</subject><ispartof>Catalysts, 2019-09, Vol.9 (9), p.733</ispartof><rights>2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c301t-50809421869bacd6a64989a2e089e449c7a27ecfbfc34ab23631312344330b9c3</citedby><cites>FETCH-LOGICAL-c301t-50809421869bacd6a64989a2e089e449c7a27ecfbfc34ab23631312344330b9c3</cites><orcidid>0000-0001-9095-0568 ; 0000-0003-4554-1778 ; 0000-0003-0786-439X ; 0000-0002-2670-1812</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,778,782,27907,27908</link.rule.ids></links><search><creatorcontrib>Liu, Sichen</creatorcontrib><creatorcontrib>Martin-Martinez, María</creatorcontrib><creatorcontrib>Álvarez-Montero, María Ariadna</creatorcontrib><creatorcontrib>Arevalo-Bastante, Alejandra</creatorcontrib><creatorcontrib>Rodriguez, Juan José</creatorcontrib><creatorcontrib>Gómez-Sainero, Luisa María</creatorcontrib><title>Recycling of Gas Phase Residual Dichloromethane by Hydrodechlorination: Regeneration of Deactivated Pd/C Catalysts</title><title>Catalysts</title><description>Dichloromethane (DCM) is an important pollutant with very harmful effects on human health and the environment. Catalytic hydrodechlorination (HDC) is an environmentally friendly technology for its removal from gas streams; it avoids the formation of hazardous pollutants like dioxins and phosgene (produced by other techniques), and the products obtained can be reused in other industries. When compared to other precious metals, Pd/C catalyst exhibited a better catalytic activity. However, the catalyst showed a significant deactivation during the reaction. In this study, the oxidation state and particle size of Pd was monitored with time on stream in order to elucidate the transformations that the catalyst undergoes during HDC. The deactivation can be ascribed to the formation of a new PdCx phase during the first hour of reaction. Carbon atoms incorporated to Pd lattice come from (chloro)-hydrocarbons adsorbed in the metallic species, whose transformation is promoted by the HCl originating in the reaction. Nevertheless, the catalyst was regenerated by air flow treatment at 250 °C, recovering the catalyst more than 80% of initial DCM conversion.</description><subject>Adsorption</subject><subject>Air flow</subject><subject>Catalysts</subject><subject>Catalytic activity</subject><subject>Chemical reactions</subject><subject>Deactivation</subject><subject>Dichloromethane</subject><subject>Dioxins</subject><subject>Experiments</subject><subject>Gas streams</subject><subject>Gases</subject><subject>Hydrocarbons</subject><subject>Hydrodechlorination</subject><subject>Oxidation</subject><subject>Phosgene</subject><subject>Poisoning</subject><subject>Pollutants</subject><subject>Regeneration</subject><subject>Spacetime</subject><subject>Valence</subject><subject>Vapor phases</subject><issn>2073-4344</issn><issn>2073-4344</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNpNUE1PwzAMjRBITGM3fkAkrpTlqx_hhjrYkCYxTXCu3NTdOnXNSDKk_nu6jQO-PNt6frYfIfecPUmp2dRAgFYzzVIpr8hIDBgpqdT1v_yWTLzfsSE0lxmPR8St0fSmbboNtTWdg6erLXika_RNdYSWzhqzba2zewxb6JCWPV30lbMVnvtNB6Gx3fMwsMEO3bk6Sc0QTGh-IGBFV9U0p_npvt4Hf0duamg9Tv5wTL7eXj_zRbT8mL_nL8vISMZDFLOMaSV4lugSTJVAonSmQSDLNCqlTQoiRVOXtZEKSiETySUXw5dSslIbOSYPF92Ds99H9KHY2aPrhpWFiFUaZ1yrZGA9XljGWe8d1sXBNXtwfcFZcTK2-G-s_AUAhWv3</recordid><startdate>20190901</startdate><enddate>20190901</enddate><creator>Liu, Sichen</creator><creator>Martin-Martinez, María</creator><creator>Álvarez-Montero, María Ariadna</creator><creator>Arevalo-Bastante, Alejandra</creator><creator>Rodriguez, Juan José</creator><creator>Gómez-Sainero, Luisa María</creator><general>MDPI AG</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>JG9</scope><scope>KB.</scope><scope>PDBOC</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><orcidid>https://orcid.org/0000-0001-9095-0568</orcidid><orcidid>https://orcid.org/0000-0003-4554-1778</orcidid><orcidid>https://orcid.org/0000-0003-0786-439X</orcidid><orcidid>https://orcid.org/0000-0002-2670-1812</orcidid></search><sort><creationdate>20190901</creationdate><title>Recycling of Gas Phase Residual Dichloromethane by Hydrodechlorination: Regeneration of Deactivated Pd/C Catalysts</title><author>Liu, Sichen ; Martin-Martinez, María ; Álvarez-Montero, María Ariadna ; Arevalo-Bastante, Alejandra ; Rodriguez, Juan José ; Gómez-Sainero, Luisa María</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c301t-50809421869bacd6a64989a2e089e449c7a27ecfbfc34ab23631312344330b9c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Adsorption</topic><topic>Air flow</topic><topic>Catalysts</topic><topic>Catalytic activity</topic><topic>Chemical reactions</topic><topic>Deactivation</topic><topic>Dichloromethane</topic><topic>Dioxins</topic><topic>Experiments</topic><topic>Gas streams</topic><topic>Gases</topic><topic>Hydrocarbons</topic><topic>Hydrodechlorination</topic><topic>Oxidation</topic><topic>Phosgene</topic><topic>Poisoning</topic><topic>Pollutants</topic><topic>Regeneration</topic><topic>Spacetime</topic><topic>Valence</topic><topic>Vapor phases</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Liu, Sichen</creatorcontrib><creatorcontrib>Martin-Martinez, María</creatorcontrib><creatorcontrib>Álvarez-Montero, María Ariadna</creatorcontrib><creatorcontrib>Arevalo-Bastante, Alejandra</creatorcontrib><creatorcontrib>Rodriguez, Juan José</creatorcontrib><creatorcontrib>Gómez-Sainero, Luisa María</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection (ProQuest)</collection><collection>ProQuest One Community College</collection><collection>ProQuest Materials Science Collection</collection><collection>ProQuest Central Korea</collection><collection>SciTech Premium Collection</collection><collection>Materials Research Database</collection><collection>Materials Science Database</collection><collection>Materials Science Collection</collection><collection>Publicly Available Content Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><jtitle>Catalysts</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Liu, Sichen</au><au>Martin-Martinez, María</au><au>Álvarez-Montero, María Ariadna</au><au>Arevalo-Bastante, Alejandra</au><au>Rodriguez, Juan José</au><au>Gómez-Sainero, Luisa María</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Recycling of Gas Phase Residual Dichloromethane by Hydrodechlorination: Regeneration of Deactivated Pd/C Catalysts</atitle><jtitle>Catalysts</jtitle><date>2019-09-01</date><risdate>2019</risdate><volume>9</volume><issue>9</issue><spage>733</spage><pages>733-</pages><issn>2073-4344</issn><eissn>2073-4344</eissn><abstract>Dichloromethane (DCM) is an important pollutant with very harmful effects on human health and the environment. Catalytic hydrodechlorination (HDC) is an environmentally friendly technology for its removal from gas streams; it avoids the formation of hazardous pollutants like dioxins and phosgene (produced by other techniques), and the products obtained can be reused in other industries. When compared to other precious metals, Pd/C catalyst exhibited a better catalytic activity. However, the catalyst showed a significant deactivation during the reaction. In this study, the oxidation state and particle size of Pd was monitored with time on stream in order to elucidate the transformations that the catalyst undergoes during HDC. The deactivation can be ascribed to the formation of a new PdCx phase during the first hour of reaction. Carbon atoms incorporated to Pd lattice come from (chloro)-hydrocarbons adsorbed in the metallic species, whose transformation is promoted by the HCl originating in the reaction. Nevertheless, the catalyst was regenerated by air flow treatment at 250 °C, recovering the catalyst more than 80% of initial DCM conversion.</abstract><cop>Basel</cop><pub>MDPI AG</pub><doi>10.3390/catal9090733</doi><orcidid>https://orcid.org/0000-0001-9095-0568</orcidid><orcidid>https://orcid.org/0000-0003-4554-1778</orcidid><orcidid>https://orcid.org/0000-0003-0786-439X</orcidid><orcidid>https://orcid.org/0000-0002-2670-1812</orcidid><oa>free_for_read</oa></addata></record> |
fulltext | fulltext |
identifier | ISSN: 2073-4344 |
ispartof | Catalysts, 2019-09, Vol.9 (9), p.733 |
issn | 2073-4344 2073-4344 |
language | eng |
recordid | cdi_proquest_journals_2547581946 |
source | Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; MDPI - Multidisciplinary Digital Publishing Institute |
subjects | Adsorption Air flow Catalysts Catalytic activity Chemical reactions Deactivation Dichloromethane Dioxins Experiments Gas streams Gases Hydrocarbons Hydrodechlorination Oxidation Phosgene Poisoning Pollutants Regeneration Spacetime Valence Vapor phases |
title | Recycling of Gas Phase Residual Dichloromethane by Hydrodechlorination: Regeneration of Deactivated Pd/C Catalysts |
url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-16T09%3A17%3A25IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Recycling%20of%20Gas%20Phase%20Residual%20Dichloromethane%20by%20Hydrodechlorination:%20Regeneration%20of%20Deactivated%20Pd/C%20Catalysts&rft.jtitle=Catalysts&rft.au=Liu,%20Sichen&rft.date=2019-09-01&rft.volume=9&rft.issue=9&rft.spage=733&rft.pages=733-&rft.issn=2073-4344&rft.eissn=2073-4344&rft_id=info:doi/10.3390/catal9090733&rft_dat=%3Cproquest_cross%3E2547581946%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=2547581946&rft_id=info:pmid/&rfr_iscdi=true |