The effect of acid-base synergistic catalysis on upgrading of volatiles from coal pyrolysis over Mg-Al composite oxides
•MgxAl-LDOs with tunable acid-base property were prepared for pyrolysis volatiles upgrading.•The quality of tar and gas was improved over MgxAl-LDOs with less carbon deposition.•The content of light aromatic hydrocarbons increased by 79.8% over Mg4Al-LDO catalyst.•The acid-base synergistic effect of...
Gespeichert in:
| Veröffentlicht in: | Fuel (Guildford) 2022-08, Vol.321, p.124030, Article 124030 |
|---|---|
| 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 | |
| container_start_page | 124030 |
| container_title | Fuel (Guildford) |
| container_volume | 321 |
| creator | Yang, Hang Zhang, Jiehan Li, Changming Chen, Zhaohui Wang, Demin Wang, Deliang Ibrahim Sharif, Munnir Li, Jianling Yu, Jian Gao, Shiqiu |
| description | •MgxAl-LDOs with tunable acid-base property were prepared for pyrolysis volatiles upgrading.•The quality of tar and gas was improved over MgxAl-LDOs with less carbon deposition.•The content of light aromatic hydrocarbons increased by 79.8% over Mg4Al-LDO catalyst.•The acid-base synergistic effect of MgxAl-LDOs plays the key role in the upgrading of volatiles.
Catalytic upgrading of coal pyrolysis volatiles is one of the most promising technical routes to achieve graded utilization of low-rank coal resource. In this work, a series of Mg-Al composite oxide catalysts (MgxAl-LDOs) were synthesized with tunable acid-base properties for upgrading the volatiles from coal pyrolysis by adjusting the Mg/Al ratio in Mg-Al hydrotalcite precursors (MgxAl-LDHs). The NH3-TPD and CO2-TPD analysis results showed the quantity of acidity sites decrease together with an increase of basicity sites as the Mg/Al ratio increased in MgxAl-LDOs. MgxAl-LDOs possessed weaker acidity strength and more acidity sites than pure Al2O3, but less basicity sites than pure MgO. The catalytic performances illustrated that the increased acidity sites in MgxAl-LDOs promoted the cracking of heavy components and reduced the yield of heavy tar. Meanwhile, the weakened acidity strength and the introduction of basicity sites by Mg in MgxAl-LDOs enhanced the strong resistance to carbon deposition. Moreover, the CO2 yield and the content of light aromatic hydrocarbons in tar increased obviously after upgrading, which can be attributed to the acid-base synergistic effect of the MgxAl-LDOs. Particularly, the Mg4Al-LDO catalyst selectively improved the relative contents of light aromatic hydrocarbons, and the content of benzene, toluene, ethylbenzene, xylene, naphthalene and indene increased by 1.48, 1.54, 0.76, 2.56, 0.19 and 2.14 times (compared with the inert quartz sand), respectively. The unique catalytic behaviors of MgxAl-LDO catalysts will provide a new insight into the effect of acid-base synergistic catalysis on upgrading of volatiles from coal pyrolysis. |
| doi_str_mv | 10.1016/j.fuel.2022.124030 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_journals_2689714486</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><els_id>S0016236122008882</els_id><sourcerecordid>2689714486</sourcerecordid><originalsourceid>FETCH-LOGICAL-c258t-4b7c4f8530024f18455cb6d24e0562502387305a78de5cf25af7fcfb327f985c3</originalsourceid><addsrcrecordid>eNp9kLtOwzAUhi0EEqXwAkyWmFNsx05ciaWquElFLGW2HOc4uErjYCeFvj2uwsx0hvP95_IhdEvJghJa3O8WdoR2wQhjC8o4yckZmlFZ5llJRX6OZiRRGcsLeomuYtwRQkop-Ax9bz8Bg7VgBuwt1sbVWaUj4HjsIDQuDs5gowfdHqOL2Hd47Juga9c1J_7gWz24FiK2we-x8brF_TH4P_oAAb812apNnX3voxsA-x9XQ7xGF1a3EW7-6hx9PD1u1y_Z5v35db3aZIYJOWS8Kg23UuSEMG6p5EKYqqgZByIKJgjL049E6FLWIIxlQtvSGlvlrLRLKUw-R3fT3D74rxHioHZ-DF1aqVghlyXlXBaJYhNlgo8xgFV9cHsdjooSdRKsduokWJ0Eq0lwCj1MIUj3HxwEFY2DzkDtQtKpau_-i_8Ct72E6w</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2689714486</pqid></control><display><type>article</type><title>The effect of acid-base synergistic catalysis on upgrading of volatiles from coal pyrolysis over Mg-Al composite oxides</title><source>Elsevier ScienceDirect Journals</source><creator>Yang, Hang ; Zhang, Jiehan ; Li, Changming ; Chen, Zhaohui ; Wang, Demin ; Wang, Deliang ; Ibrahim Sharif, Munnir ; Li, Jianling ; Yu, Jian ; Gao, Shiqiu</creator><creatorcontrib>Yang, Hang ; Zhang, Jiehan ; Li, Changming ; Chen, Zhaohui ; Wang, Demin ; Wang, Deliang ; Ibrahim Sharif, Munnir ; Li, Jianling ; Yu, Jian ; Gao, Shiqiu</creatorcontrib><description>•MgxAl-LDOs with tunable acid-base property were prepared for pyrolysis volatiles upgrading.•The quality of tar and gas was improved over MgxAl-LDOs with less carbon deposition.•The content of light aromatic hydrocarbons increased by 79.8% over Mg4Al-LDO catalyst.•The acid-base synergistic effect of MgxAl-LDOs plays the key role in the upgrading of volatiles.
Catalytic upgrading of coal pyrolysis volatiles is one of the most promising technical routes to achieve graded utilization of low-rank coal resource. In this work, a series of Mg-Al composite oxide catalysts (MgxAl-LDOs) were synthesized with tunable acid-base properties for upgrading the volatiles from coal pyrolysis by adjusting the Mg/Al ratio in Mg-Al hydrotalcite precursors (MgxAl-LDHs). The NH3-TPD and CO2-TPD analysis results showed the quantity of acidity sites decrease together with an increase of basicity sites as the Mg/Al ratio increased in MgxAl-LDOs. MgxAl-LDOs possessed weaker acidity strength and more acidity sites than pure Al2O3, but less basicity sites than pure MgO. The catalytic performances illustrated that the increased acidity sites in MgxAl-LDOs promoted the cracking of heavy components and reduced the yield of heavy tar. Meanwhile, the weakened acidity strength and the introduction of basicity sites by Mg in MgxAl-LDOs enhanced the strong resistance to carbon deposition. Moreover, the CO2 yield and the content of light aromatic hydrocarbons in tar increased obviously after upgrading, which can be attributed to the acid-base synergistic effect of the MgxAl-LDOs. Particularly, the Mg4Al-LDO catalyst selectively improved the relative contents of light aromatic hydrocarbons, and the content of benzene, toluene, ethylbenzene, xylene, naphthalene and indene increased by 1.48, 1.54, 0.76, 2.56, 0.19 and 2.14 times (compared with the inert quartz sand), respectively. The unique catalytic behaviors of MgxAl-LDO catalysts will provide a new insight into the effect of acid-base synergistic catalysis on upgrading of volatiles from coal pyrolysis.</description><identifier>ISSN: 0016-2361</identifier><identifier>EISSN: 1873-7153</identifier><identifier>DOI: 10.1016/j.fuel.2022.124030</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>Acid-base synergy ; Acidity ; Acids ; Aluminum oxide ; Ammonia ; Aromatic hydrocarbons ; Basicity ; Benzene ; Carbon dioxide ; Catalysis ; Catalysts ; Catalytic upgrading ; Chemical synthesis ; Coal ; Coal pyrolysis ; Ethylbenzene ; Hydrocarbons ; Hydrotalcites ; Indene ; Magnesium ; Naphthalene ; Pyrolysis ; Synergistic effect ; Tar ; Toluene ; Upgrading ; Volatiles ; Xylene</subject><ispartof>Fuel (Guildford), 2022-08, Vol.321, p.124030, Article 124030</ispartof><rights>2022 Elsevier Ltd</rights><rights>Copyright Elsevier BV Aug 1, 2022</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c258t-4b7c4f8530024f18455cb6d24e0562502387305a78de5cf25af7fcfb327f985c3</citedby><cites>FETCH-LOGICAL-c258t-4b7c4f8530024f18455cb6d24e0562502387305a78de5cf25af7fcfb327f985c3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.fuel.2022.124030$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,777,781,3537,27905,27906,45976</link.rule.ids></links><search><creatorcontrib>Yang, Hang</creatorcontrib><creatorcontrib>Zhang, Jiehan</creatorcontrib><creatorcontrib>Li, Changming</creatorcontrib><creatorcontrib>Chen, Zhaohui</creatorcontrib><creatorcontrib>Wang, Demin</creatorcontrib><creatorcontrib>Wang, Deliang</creatorcontrib><creatorcontrib>Ibrahim Sharif, Munnir</creatorcontrib><creatorcontrib>Li, Jianling</creatorcontrib><creatorcontrib>Yu, Jian</creatorcontrib><creatorcontrib>Gao, Shiqiu</creatorcontrib><title>The effect of acid-base synergistic catalysis on upgrading of volatiles from coal pyrolysis over Mg-Al composite oxides</title><title>Fuel (Guildford)</title><description>•MgxAl-LDOs with tunable acid-base property were prepared for pyrolysis volatiles upgrading.•The quality of tar and gas was improved over MgxAl-LDOs with less carbon deposition.•The content of light aromatic hydrocarbons increased by 79.8% over Mg4Al-LDO catalyst.•The acid-base synergistic effect of MgxAl-LDOs plays the key role in the upgrading of volatiles.
Catalytic upgrading of coal pyrolysis volatiles is one of the most promising technical routes to achieve graded utilization of low-rank coal resource. In this work, a series of Mg-Al composite oxide catalysts (MgxAl-LDOs) were synthesized with tunable acid-base properties for upgrading the volatiles from coal pyrolysis by adjusting the Mg/Al ratio in Mg-Al hydrotalcite precursors (MgxAl-LDHs). The NH3-TPD and CO2-TPD analysis results showed the quantity of acidity sites decrease together with an increase of basicity sites as the Mg/Al ratio increased in MgxAl-LDOs. MgxAl-LDOs possessed weaker acidity strength and more acidity sites than pure Al2O3, but less basicity sites than pure MgO. The catalytic performances illustrated that the increased acidity sites in MgxAl-LDOs promoted the cracking of heavy components and reduced the yield of heavy tar. Meanwhile, the weakened acidity strength and the introduction of basicity sites by Mg in MgxAl-LDOs enhanced the strong resistance to carbon deposition. Moreover, the CO2 yield and the content of light aromatic hydrocarbons in tar increased obviously after upgrading, which can be attributed to the acid-base synergistic effect of the MgxAl-LDOs. Particularly, the Mg4Al-LDO catalyst selectively improved the relative contents of light aromatic hydrocarbons, and the content of benzene, toluene, ethylbenzene, xylene, naphthalene and indene increased by 1.48, 1.54, 0.76, 2.56, 0.19 and 2.14 times (compared with the inert quartz sand), respectively. The unique catalytic behaviors of MgxAl-LDO catalysts will provide a new insight into the effect of acid-base synergistic catalysis on upgrading of volatiles from coal pyrolysis.</description><subject>Acid-base synergy</subject><subject>Acidity</subject><subject>Acids</subject><subject>Aluminum oxide</subject><subject>Ammonia</subject><subject>Aromatic hydrocarbons</subject><subject>Basicity</subject><subject>Benzene</subject><subject>Carbon dioxide</subject><subject>Catalysis</subject><subject>Catalysts</subject><subject>Catalytic upgrading</subject><subject>Chemical synthesis</subject><subject>Coal</subject><subject>Coal pyrolysis</subject><subject>Ethylbenzene</subject><subject>Hydrocarbons</subject><subject>Hydrotalcites</subject><subject>Indene</subject><subject>Magnesium</subject><subject>Naphthalene</subject><subject>Pyrolysis</subject><subject>Synergistic effect</subject><subject>Tar</subject><subject>Toluene</subject><subject>Upgrading</subject><subject>Volatiles</subject><subject>Xylene</subject><issn>0016-2361</issn><issn>1873-7153</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><recordid>eNp9kLtOwzAUhi0EEqXwAkyWmFNsx05ciaWquElFLGW2HOc4uErjYCeFvj2uwsx0hvP95_IhdEvJghJa3O8WdoR2wQhjC8o4yckZmlFZ5llJRX6OZiRRGcsLeomuYtwRQkop-Ax9bz8Bg7VgBuwt1sbVWaUj4HjsIDQuDs5gowfdHqOL2Hd47Juga9c1J_7gWz24FiK2we-x8brF_TH4P_oAAb812apNnX3voxsA-x9XQ7xGF1a3EW7-6hx9PD1u1y_Z5v35db3aZIYJOWS8Kg23UuSEMG6p5EKYqqgZByIKJgjL049E6FLWIIxlQtvSGlvlrLRLKUw-R3fT3D74rxHioHZ-DF1aqVghlyXlXBaJYhNlgo8xgFV9cHsdjooSdRKsduokWJ0Eq0lwCj1MIUj3HxwEFY2DzkDtQtKpau_-i_8Ct72E6w</recordid><startdate>20220801</startdate><enddate>20220801</enddate><creator>Yang, Hang</creator><creator>Zhang, Jiehan</creator><creator>Li, Changming</creator><creator>Chen, Zhaohui</creator><creator>Wang, Demin</creator><creator>Wang, Deliang</creator><creator>Ibrahim Sharif, Munnir</creator><creator>Li, Jianling</creator><creator>Yu, Jian</creator><creator>Gao, Shiqiu</creator><general>Elsevier Ltd</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QF</scope><scope>7QO</scope><scope>7QQ</scope><scope>7SC</scope><scope>7SE</scope><scope>7SP</scope><scope>7SR</scope><scope>7T7</scope><scope>7TA</scope><scope>7TB</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>C1K</scope><scope>F28</scope><scope>FR3</scope><scope>H8D</scope><scope>H8G</scope><scope>JG9</scope><scope>JQ2</scope><scope>KR7</scope><scope>L7M</scope><scope>L~C</scope><scope>L~D</scope><scope>P64</scope></search><sort><creationdate>20220801</creationdate><title>The effect of acid-base synergistic catalysis on upgrading of volatiles from coal pyrolysis over Mg-Al composite oxides</title><author>Yang, Hang ; Zhang, Jiehan ; Li, Changming ; Chen, Zhaohui ; Wang, Demin ; Wang, Deliang ; Ibrahim Sharif, Munnir ; Li, Jianling ; Yu, Jian ; Gao, Shiqiu</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c258t-4b7c4f8530024f18455cb6d24e0562502387305a78de5cf25af7fcfb327f985c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Acid-base synergy</topic><topic>Acidity</topic><topic>Acids</topic><topic>Aluminum oxide</topic><topic>Ammonia</topic><topic>Aromatic hydrocarbons</topic><topic>Basicity</topic><topic>Benzene</topic><topic>Carbon dioxide</topic><topic>Catalysis</topic><topic>Catalysts</topic><topic>Catalytic upgrading</topic><topic>Chemical synthesis</topic><topic>Coal</topic><topic>Coal pyrolysis</topic><topic>Ethylbenzene</topic><topic>Hydrocarbons</topic><topic>Hydrotalcites</topic><topic>Indene</topic><topic>Magnesium</topic><topic>Naphthalene</topic><topic>Pyrolysis</topic><topic>Synergistic effect</topic><topic>Tar</topic><topic>Toluene</topic><topic>Upgrading</topic><topic>Volatiles</topic><topic>Xylene</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Yang, Hang</creatorcontrib><creatorcontrib>Zhang, Jiehan</creatorcontrib><creatorcontrib>Li, Changming</creatorcontrib><creatorcontrib>Chen, Zhaohui</creatorcontrib><creatorcontrib>Wang, Demin</creatorcontrib><creatorcontrib>Wang, Deliang</creatorcontrib><creatorcontrib>Ibrahim Sharif, Munnir</creatorcontrib><creatorcontrib>Li, Jianling</creatorcontrib><creatorcontrib>Yu, Jian</creatorcontrib><creatorcontrib>Gao, Shiqiu</creatorcontrib><collection>CrossRef</collection><collection>Aluminium Industry Abstracts</collection><collection>Biotechnology Research Abstracts</collection><collection>Ceramic Abstracts</collection><collection>Computer and Information Systems Abstracts</collection><collection>Corrosion Abstracts</collection><collection>Electronics & Communications Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Materials Business File</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Copper Technical Reference Library</collection><collection>Materials Research Database</collection><collection>ProQuest Computer Science Collection</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Computer and Information Systems Abstracts Academic</collection><collection>Computer and Information Systems Abstracts Professional</collection><collection>Biotechnology and BioEngineering Abstracts</collection><jtitle>Fuel (Guildford)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yang, Hang</au><au>Zhang, Jiehan</au><au>Li, Changming</au><au>Chen, Zhaohui</au><au>Wang, Demin</au><au>Wang, Deliang</au><au>Ibrahim Sharif, Munnir</au><au>Li, Jianling</au><au>Yu, Jian</au><au>Gao, Shiqiu</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The effect of acid-base synergistic catalysis on upgrading of volatiles from coal pyrolysis over Mg-Al composite oxides</atitle><jtitle>Fuel (Guildford)</jtitle><date>2022-08-01</date><risdate>2022</risdate><volume>321</volume><spage>124030</spage><pages>124030-</pages><artnum>124030</artnum><issn>0016-2361</issn><eissn>1873-7153</eissn><abstract>•MgxAl-LDOs with tunable acid-base property were prepared for pyrolysis volatiles upgrading.•The quality of tar and gas was improved over MgxAl-LDOs with less carbon deposition.•The content of light aromatic hydrocarbons increased by 79.8% over Mg4Al-LDO catalyst.•The acid-base synergistic effect of MgxAl-LDOs plays the key role in the upgrading of volatiles.
Catalytic upgrading of coal pyrolysis volatiles is one of the most promising technical routes to achieve graded utilization of low-rank coal resource. In this work, a series of Mg-Al composite oxide catalysts (MgxAl-LDOs) were synthesized with tunable acid-base properties for upgrading the volatiles from coal pyrolysis by adjusting the Mg/Al ratio in Mg-Al hydrotalcite precursors (MgxAl-LDHs). The NH3-TPD and CO2-TPD analysis results showed the quantity of acidity sites decrease together with an increase of basicity sites as the Mg/Al ratio increased in MgxAl-LDOs. MgxAl-LDOs possessed weaker acidity strength and more acidity sites than pure Al2O3, but less basicity sites than pure MgO. The catalytic performances illustrated that the increased acidity sites in MgxAl-LDOs promoted the cracking of heavy components and reduced the yield of heavy tar. Meanwhile, the weakened acidity strength and the introduction of basicity sites by Mg in MgxAl-LDOs enhanced the strong resistance to carbon deposition. Moreover, the CO2 yield and the content of light aromatic hydrocarbons in tar increased obviously after upgrading, which can be attributed to the acid-base synergistic effect of the MgxAl-LDOs. Particularly, the Mg4Al-LDO catalyst selectively improved the relative contents of light aromatic hydrocarbons, and the content of benzene, toluene, ethylbenzene, xylene, naphthalene and indene increased by 1.48, 1.54, 0.76, 2.56, 0.19 and 2.14 times (compared with the inert quartz sand), respectively. The unique catalytic behaviors of MgxAl-LDO catalysts will provide a new insight into the effect of acid-base synergistic catalysis on upgrading of volatiles from coal pyrolysis.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.fuel.2022.124030</doi></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0016-2361 |
| ispartof | Fuel (Guildford), 2022-08, Vol.321, p.124030, Article 124030 |
| issn | 0016-2361 1873-7153 |
| language | eng |
| recordid | cdi_proquest_journals_2689714486 |
| source | Elsevier ScienceDirect Journals |
| subjects | Acid-base synergy Acidity Acids Aluminum oxide Ammonia Aromatic hydrocarbons Basicity Benzene Carbon dioxide Catalysis Catalysts Catalytic upgrading Chemical synthesis Coal Coal pyrolysis Ethylbenzene Hydrocarbons Hydrotalcites Indene Magnesium Naphthalene Pyrolysis Synergistic effect Tar Toluene Upgrading Volatiles Xylene |
| title | The effect of acid-base synergistic catalysis on upgrading of volatiles from coal pyrolysis over Mg-Al composite oxides |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-19T21%3A37%3A54IST&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=The%20effect%20of%20acid-base%20synergistic%20catalysis%20on%20upgrading%20of%20volatiles%20from%20coal%20pyrolysis%20over%20Mg-Al%20composite%20oxides&rft.jtitle=Fuel%20(Guildford)&rft.au=Yang,%20Hang&rft.date=2022-08-01&rft.volume=321&rft.spage=124030&rft.pages=124030-&rft.artnum=124030&rft.issn=0016-2361&rft.eissn=1873-7153&rft_id=info:doi/10.1016/j.fuel.2022.124030&rft_dat=%3Cproquest_cross%3E2689714486%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=2689714486&rft_id=info:pmid/&rft_els_id=S0016236122008882&rfr_iscdi=true |