Study on Pretreatment and Leaching Behaviors of Spent Fluid Catalytic Cracking Catalysts
The reclamation of exhausted Fluid Catalytic Cracking (FCC) catalysts has attracted considerable interest. However, the leaching rates of valuable metals in waste can be influenced by the pretreatment and calcination process. This study focuses on investigating the impact of pretreatment temperature...
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| Veröffentlicht in: | Journal of sustainable metallurgy 2024, Vol.10 (2), p.880-892 |
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| creator | Wu, Mingshuai Cheng, Wenbo Yu, Fengshan Tian, Maolin Wang, Xueli Bu, Yongjie Wen, Jiawei Huang, Guoyong |
| description | The reclamation of exhausted Fluid Catalytic Cracking (FCC) catalysts has attracted considerable interest. However, the leaching rates of valuable metals in waste can be influenced by the pretreatment and calcination process. This study focuses on investigating the impact of pretreatment temperature on the metal-leaching process of spent FCC catalysts. After calcination at 1200 °C, the Al
2
O
3
carrier transformed from γ-Al
2
O
3
to α-Al
2
O
3
with a denser structure. Subsequently, the valuable metals react with the carrier to form regular acid salts, which are averse to the leaching process. While the pretreatment roasting of spent FCC catalysts at 600 °C could not only remove the surface impurities effectively but also keep the original γ-Al
2
O
3
structure, promoting the leaching process. Finally, the kinetic model is studied with the aim of achieving the high-efficiency leaching of Ni in spent FCC catalysts. The leaching kinetics model of Ni accords with the ash diffusion model, and the reaction activation energy is 53.05 kJ/mol, in the temperature range of 60–90 °C, sulfuric acid concentration of 2 mol/L, particle size of less than 200 mesh (75μm). Specifically, for spent FCC catalysts, pretreatment at high temperatures is not conducive to subsequent leaching, while pretreatment at low temperatures is conducive to subsequent leaching of valuable metals.
Graphical Abstract |
| doi_str_mv | 10.1007/s40831-024-00831-4 |
| format | Article |
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2
O
3
carrier transformed from γ-Al
2
O
3
to α-Al
2
O
3
with a denser structure. Subsequently, the valuable metals react with the carrier to form regular acid salts, which are averse to the leaching process. While the pretreatment roasting of spent FCC catalysts at 600 °C could not only remove the surface impurities effectively but also keep the original γ-Al
2
O
3
structure, promoting the leaching process. Finally, the kinetic model is studied with the aim of achieving the high-efficiency leaching of Ni in spent FCC catalysts. The leaching kinetics model of Ni accords with the ash diffusion model, and the reaction activation energy is 53.05 kJ/mol, in the temperature range of 60–90 °C, sulfuric acid concentration of 2 mol/L, particle size of less than 200 mesh (75μm). Specifically, for spent FCC catalysts, pretreatment at high temperatures is not conducive to subsequent leaching, while pretreatment at low temperatures is conducive to subsequent leaching of valuable metals.
Graphical Abstract</description><identifier>ISSN: 2199-3823</identifier><identifier>EISSN: 2199-3831</identifier><identifier>DOI: 10.1007/s40831-024-00831-4</identifier><language>eng</language><publisher>Cham: Springer International Publishing</publisher><subject>Aluminum oxide ; Catalysts ; Catalytic cracking ; Earth and Environmental Science ; Environment ; Fluid catalytic cracking ; High temperature ; Leaching ; Low temperature ; Metallic Materials ; Metals ; Pretreatment ; Reaction kinetics ; Research Article ; Roasting ; Sulfuric acid ; Sustainable Development ; Transitional aluminas</subject><ispartof>Journal of sustainable metallurgy, 2024, Vol.10 (2), p.880-892</ispartof><rights>The Minerals, Metals & Materials Society 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c270t-e9e9279c170c1dc190e2b9c338566a78bec1d3cb52666005506e71e17b8b1e693</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s40831-024-00831-4$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s40831-024-00831-4$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27903,27904,41467,42536,51297</link.rule.ids></links><search><creatorcontrib>Wu, Mingshuai</creatorcontrib><creatorcontrib>Cheng, Wenbo</creatorcontrib><creatorcontrib>Yu, Fengshan</creatorcontrib><creatorcontrib>Tian, Maolin</creatorcontrib><creatorcontrib>Wang, Xueli</creatorcontrib><creatorcontrib>Bu, Yongjie</creatorcontrib><creatorcontrib>Wen, Jiawei</creatorcontrib><creatorcontrib>Huang, Guoyong</creatorcontrib><title>Study on Pretreatment and Leaching Behaviors of Spent Fluid Catalytic Cracking Catalysts</title><title>Journal of sustainable metallurgy</title><addtitle>J. Sustain. Metall</addtitle><description>The reclamation of exhausted Fluid Catalytic Cracking (FCC) catalysts has attracted considerable interest. However, the leaching rates of valuable metals in waste can be influenced by the pretreatment and calcination process. This study focuses on investigating the impact of pretreatment temperature on the metal-leaching process of spent FCC catalysts. After calcination at 1200 °C, the Al
2
O
3
carrier transformed from γ-Al
2
O
3
to α-Al
2
O
3
with a denser structure. Subsequently, the valuable metals react with the carrier to form regular acid salts, which are averse to the leaching process. While the pretreatment roasting of spent FCC catalysts at 600 °C could not only remove the surface impurities effectively but also keep the original γ-Al
2
O
3
structure, promoting the leaching process. Finally, the kinetic model is studied with the aim of achieving the high-efficiency leaching of Ni in spent FCC catalysts. The leaching kinetics model of Ni accords with the ash diffusion model, and the reaction activation energy is 53.05 kJ/mol, in the temperature range of 60–90 °C, sulfuric acid concentration of 2 mol/L, particle size of less than 200 mesh (75μm). Specifically, for spent FCC catalysts, pretreatment at high temperatures is not conducive to subsequent leaching, while pretreatment at low temperatures is conducive to subsequent leaching of valuable metals.
Graphical Abstract</description><subject>Aluminum oxide</subject><subject>Catalysts</subject><subject>Catalytic cracking</subject><subject>Earth and Environmental Science</subject><subject>Environment</subject><subject>Fluid catalytic cracking</subject><subject>High temperature</subject><subject>Leaching</subject><subject>Low temperature</subject><subject>Metallic Materials</subject><subject>Metals</subject><subject>Pretreatment</subject><subject>Reaction kinetics</subject><subject>Research Article</subject><subject>Roasting</subject><subject>Sulfuric acid</subject><subject>Sustainable Development</subject><subject>Transitional aluminas</subject><issn>2199-3823</issn><issn>2199-3831</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><recordid>eNp9UNFKwzAUDaLgmPsBnwI-V2-SNmketTgVBgpT8C2k6d3WubUzyYT9ve0q-ubTPffcc86FQ8glg2sGoG5CCrlgCfA0gSNKT8iIM60T0W2nv5iLczIJYQ0AXIlUKTYi7_O4rw60beiLx-jRxi02kdqmojO0blU3S3qHK_tVtz7QdkHnu_4-3ezrihY22s0h1o4W3rqPXjtQIYYLcrawm4CTnzkmb9P71-IxmT0_PBW3s8RxBTFBjZor7ZgCxyrHNCAvtRMiz6S0Ki-xo4UrMy6lBMgykKgYMlXmJUOpxZhcDbk7337uMUSzbve-6V4aATKToLO8V_FB5XwbgseF2fl6a_3BMDB9iWYo0XQlmmOJJu1MYjCFTtws0f9F_-P6BoH2c5U</recordid><startdate>2024</startdate><enddate>2024</enddate><creator>Wu, Mingshuai</creator><creator>Cheng, Wenbo</creator><creator>Yu, Fengshan</creator><creator>Tian, Maolin</creator><creator>Wang, Xueli</creator><creator>Bu, Yongjie</creator><creator>Wen, Jiawei</creator><creator>Huang, Guoyong</creator><general>Springer International Publishing</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>2024</creationdate><title>Study on Pretreatment and Leaching Behaviors of Spent Fluid Catalytic Cracking Catalysts</title><author>Wu, Mingshuai ; Cheng, Wenbo ; Yu, Fengshan ; Tian, Maolin ; Wang, Xueli ; Bu, Yongjie ; Wen, Jiawei ; Huang, Guoyong</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c270t-e9e9279c170c1dc190e2b9c338566a78bec1d3cb52666005506e71e17b8b1e693</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Aluminum oxide</topic><topic>Catalysts</topic><topic>Catalytic cracking</topic><topic>Earth and Environmental Science</topic><topic>Environment</topic><topic>Fluid catalytic cracking</topic><topic>High temperature</topic><topic>Leaching</topic><topic>Low temperature</topic><topic>Metallic Materials</topic><topic>Metals</topic><topic>Pretreatment</topic><topic>Reaction kinetics</topic><topic>Research Article</topic><topic>Roasting</topic><topic>Sulfuric acid</topic><topic>Sustainable Development</topic><topic>Transitional aluminas</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wu, Mingshuai</creatorcontrib><creatorcontrib>Cheng, Wenbo</creatorcontrib><creatorcontrib>Yu, Fengshan</creatorcontrib><creatorcontrib>Tian, Maolin</creatorcontrib><creatorcontrib>Wang, Xueli</creatorcontrib><creatorcontrib>Bu, Yongjie</creatorcontrib><creatorcontrib>Wen, Jiawei</creatorcontrib><creatorcontrib>Huang, Guoyong</creatorcontrib><collection>CrossRef</collection><jtitle>Journal of sustainable metallurgy</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wu, Mingshuai</au><au>Cheng, Wenbo</au><au>Yu, Fengshan</au><au>Tian, Maolin</au><au>Wang, Xueli</au><au>Bu, Yongjie</au><au>Wen, Jiawei</au><au>Huang, Guoyong</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Study on Pretreatment and Leaching Behaviors of Spent Fluid Catalytic Cracking Catalysts</atitle><jtitle>Journal of sustainable metallurgy</jtitle><stitle>J. Sustain. Metall</stitle><date>2024</date><risdate>2024</risdate><volume>10</volume><issue>2</issue><spage>880</spage><epage>892</epage><pages>880-892</pages><issn>2199-3823</issn><eissn>2199-3831</eissn><abstract>The reclamation of exhausted Fluid Catalytic Cracking (FCC) catalysts has attracted considerable interest. However, the leaching rates of valuable metals in waste can be influenced by the pretreatment and calcination process. This study focuses on investigating the impact of pretreatment temperature on the metal-leaching process of spent FCC catalysts. After calcination at 1200 °C, the Al
2
O
3
carrier transformed from γ-Al
2
O
3
to α-Al
2
O
3
with a denser structure. Subsequently, the valuable metals react with the carrier to form regular acid salts, which are averse to the leaching process. While the pretreatment roasting of spent FCC catalysts at 600 °C could not only remove the surface impurities effectively but also keep the original γ-Al
2
O
3
structure, promoting the leaching process. Finally, the kinetic model is studied with the aim of achieving the high-efficiency leaching of Ni in spent FCC catalysts. The leaching kinetics model of Ni accords with the ash diffusion model, and the reaction activation energy is 53.05 kJ/mol, in the temperature range of 60–90 °C, sulfuric acid concentration of 2 mol/L, particle size of less than 200 mesh (75μm). Specifically, for spent FCC catalysts, pretreatment at high temperatures is not conducive to subsequent leaching, while pretreatment at low temperatures is conducive to subsequent leaching of valuable metals.
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| subjects | Aluminum oxide Catalysts Catalytic cracking Earth and Environmental Science Environment Fluid catalytic cracking High temperature Leaching Low temperature Metallic Materials Metals Pretreatment Reaction kinetics Research Article Roasting Sulfuric acid Sustainable Development Transitional aluminas |
| title | Study on Pretreatment and Leaching Behaviors of Spent Fluid Catalytic Cracking Catalysts |
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