Urea Hydrolysis Over α-MnO2 Catalyst: Preparation, Characterizations and Influencing Factors
MnO 2 was screened from various metal oxides and different crystal structures of MnO 2 were prepared, which were used to hydrolyze urea process wastewater for energy conservation and environmental protection. The characterizations of XRD, SEM, Raman, FT-IR, XPS and H 2 -TPR were employed and the hyd...
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| Veröffentlicht in: | Catalysis letters 2019-07, Vol.149 (7), p.2032-2042 |
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| creator | Wang, Ying Shen, Shuguang Li, Meina Sun, Yujuan Li, Binbin Ma, Xueping Zhou, Zijian Guo, Chenyuan |
| description | MnO
2
was screened from various metal oxides and different crystal structures of MnO
2
were prepared, which were used to hydrolyze urea process wastewater for energy conservation and environmental protection. The characterizations of XRD, SEM, Raman, FT-IR, XPS and H
2
-TPR were employed and the hydrolysis experiments were carried out, demonstrating that oxygen vacancy on the surface of MnO
2
might be the catalytic activity source on urea hydrolysis. By optimizing reaction influencing factors, the residual urea concentration reduced to 1.61 mg/L over
α
-MnO
2
, far below the effluent standard. Meanwhile, the temperature of heterogeneous hydrolysis over α-MnO
2
dropped drastically compared with that of thermal hydrolysis. Further, the kinetic parameters of hydrolysis were obtained over
α
-MnO
2
. And
α
-MnO
2
also showed excellent recycling ability on the reused test.
Graphical Abstract
Effect of different crystal structures MnO2 on urea degradation rate. (Catalyst dosage is 50 g/L, reaction time is 60 min, temperature is 165oC.) |
| doi_str_mv | 10.1007/s10562-019-02730-w |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_journals_2406783373</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2406783373</sourcerecordid><originalsourceid>FETCH-LOGICAL-c234w-3e5c49dca558d57371ac0d9b45fa35ad6e59062572e5ae1bfbc99e85248511cb3</originalsourceid><addsrcrecordid>eNp9UEtOwzAUtBBIlMIFWFlii8GfOI7ZoYjSSkVlQaVukOU4TklVnGInVOVWXIQzYRokdqzeaN7MPL0B4JzgK4KxuA4E85QiTCTCVDCMtgdgQLigKBNycRgxJgQxQRfH4CSEFcZYCiIH4HnurYbjXemb9S7UAc7erYdfn-jBzSjMdasj3d7AR2832uu2btwlzF8iNK319ceeCVC7Ek5cte6sM7VbwlFcNz6cgqNKr4M9-51DMB_dPeVjNJ3dT_LbKTKUJVvELDeJLI3mPCu5YIJog0tZJLzSjOsytVzilMZ3LNeWFFVhpLQZp0nGCTEFG4KLPnfjm7fOhlatms67eFLRBKciY0ywqKK9yvgmBG8rtfH1q_Y7RbD6qVH1NapYo9rXqLbRxHpTiGK3tP4v-h_XN1_fd0w</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2406783373</pqid></control><display><type>article</type><title>Urea Hydrolysis Over α-MnO2 Catalyst: Preparation, Characterizations and Influencing Factors</title><source>Springer Nature - Complete Springer Journals</source><creator>Wang, Ying ; Shen, Shuguang ; Li, Meina ; Sun, Yujuan ; Li, Binbin ; Ma, Xueping ; Zhou, Zijian ; Guo, Chenyuan</creator><creatorcontrib>Wang, Ying ; Shen, Shuguang ; Li, Meina ; Sun, Yujuan ; Li, Binbin ; Ma, Xueping ; Zhou, Zijian ; Guo, Chenyuan</creatorcontrib><description>MnO
2
was screened from various metal oxides and different crystal structures of MnO
2
were prepared, which were used to hydrolyze urea process wastewater for energy conservation and environmental protection. The characterizations of XRD, SEM, Raman, FT-IR, XPS and H
2
-TPR were employed and the hydrolysis experiments were carried out, demonstrating that oxygen vacancy on the surface of MnO
2
might be the catalytic activity source on urea hydrolysis. By optimizing reaction influencing factors, the residual urea concentration reduced to 1.61 mg/L over
α
-MnO
2
, far below the effluent standard. Meanwhile, the temperature of heterogeneous hydrolysis over α-MnO
2
dropped drastically compared with that of thermal hydrolysis. Further, the kinetic parameters of hydrolysis were obtained over
α
-MnO
2
. And
α
-MnO
2
also showed excellent recycling ability on the reused test.
Graphical Abstract
Effect of different crystal structures MnO2 on urea degradation rate. (Catalyst dosage is 50 g/L, reaction time is 60 min, temperature is 165oC.)</description><identifier>ISSN: 1011-372X</identifier><identifier>EISSN: 1572-879X</identifier><identifier>DOI: 10.1007/s10562-019-02730-w</identifier><language>eng</language><publisher>New York: Springer US</publisher><subject>Catalysis ; Catalytic activity ; Chemistry ; Chemistry and Materials Science ; Crystal structure ; Energy conservation ; Environmental protection ; Hydrolysis ; Industrial Chemistry/Chemical Engineering ; Manganese dioxide ; Metal oxides ; Organometallic Chemistry ; Physical Chemistry ; Ureas ; Wastewater ; X ray photoelectron spectroscopy</subject><ispartof>Catalysis letters, 2019-07, Vol.149 (7), p.2032-2042</ispartof><rights>Springer Science+Business Media, LLC, part of Springer Nature 2019</rights><rights>Springer Science+Business Media, LLC, part of Springer Nature 2019.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c234w-3e5c49dca558d57371ac0d9b45fa35ad6e59062572e5ae1bfbc99e85248511cb3</citedby><cites>FETCH-LOGICAL-c234w-3e5c49dca558d57371ac0d9b45fa35ad6e59062572e5ae1bfbc99e85248511cb3</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/s10562-019-02730-w$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s10562-019-02730-w$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27903,27904,41467,42536,51297</link.rule.ids></links><search><creatorcontrib>Wang, Ying</creatorcontrib><creatorcontrib>Shen, Shuguang</creatorcontrib><creatorcontrib>Li, Meina</creatorcontrib><creatorcontrib>Sun, Yujuan</creatorcontrib><creatorcontrib>Li, Binbin</creatorcontrib><creatorcontrib>Ma, Xueping</creatorcontrib><creatorcontrib>Zhou, Zijian</creatorcontrib><creatorcontrib>Guo, Chenyuan</creatorcontrib><title>Urea Hydrolysis Over α-MnO2 Catalyst: Preparation, Characterizations and Influencing Factors</title><title>Catalysis letters</title><addtitle>Catal Lett</addtitle><description>MnO
2
was screened from various metal oxides and different crystal structures of MnO
2
were prepared, which were used to hydrolyze urea process wastewater for energy conservation and environmental protection. The characterizations of XRD, SEM, Raman, FT-IR, XPS and H
2
-TPR were employed and the hydrolysis experiments were carried out, demonstrating that oxygen vacancy on the surface of MnO
2
might be the catalytic activity source on urea hydrolysis. By optimizing reaction influencing factors, the residual urea concentration reduced to 1.61 mg/L over
α
-MnO
2
, far below the effluent standard. Meanwhile, the temperature of heterogeneous hydrolysis over α-MnO
2
dropped drastically compared with that of thermal hydrolysis. Further, the kinetic parameters of hydrolysis were obtained over
α
-MnO
2
. And
α
-MnO
2
also showed excellent recycling ability on the reused test.
Graphical Abstract
Effect of different crystal structures MnO2 on urea degradation rate. (Catalyst dosage is 50 g/L, reaction time is 60 min, temperature is 165oC.)</description><subject>Catalysis</subject><subject>Catalytic activity</subject><subject>Chemistry</subject><subject>Chemistry and Materials Science</subject><subject>Crystal structure</subject><subject>Energy conservation</subject><subject>Environmental protection</subject><subject>Hydrolysis</subject><subject>Industrial Chemistry/Chemical Engineering</subject><subject>Manganese dioxide</subject><subject>Metal oxides</subject><subject>Organometallic Chemistry</subject><subject>Physical Chemistry</subject><subject>Ureas</subject><subject>Wastewater</subject><subject>X ray photoelectron spectroscopy</subject><issn>1011-372X</issn><issn>1572-879X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><sourceid>AFKRA</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNp9UEtOwzAUtBBIlMIFWFlii8GfOI7ZoYjSSkVlQaVukOU4TklVnGInVOVWXIQzYRokdqzeaN7MPL0B4JzgK4KxuA4E85QiTCTCVDCMtgdgQLigKBNycRgxJgQxQRfH4CSEFcZYCiIH4HnurYbjXemb9S7UAc7erYdfn-jBzSjMdasj3d7AR2832uu2btwlzF8iNK319ceeCVC7Ek5cte6sM7VbwlFcNz6cgqNKr4M9-51DMB_dPeVjNJ3dT_LbKTKUJVvELDeJLI3mPCu5YIJog0tZJLzSjOsytVzilMZ3LNeWFFVhpLQZp0nGCTEFG4KLPnfjm7fOhlatms67eFLRBKciY0ywqKK9yvgmBG8rtfH1q_Y7RbD6qVH1NapYo9rXqLbRxHpTiGK3tP4v-h_XN1_fd0w</recordid><startdate>20190701</startdate><enddate>20190701</enddate><creator>Wang, Ying</creator><creator>Shen, Shuguang</creator><creator>Li, Meina</creator><creator>Sun, Yujuan</creator><creator>Li, Binbin</creator><creator>Ma, Xueping</creator><creator>Zhou, Zijian</creator><creator>Guo, Chenyuan</creator><general>Springer US</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>AFKRA</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>KB.</scope><scope>PDBOC</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope></search><sort><creationdate>20190701</creationdate><title>Urea Hydrolysis Over α-MnO2 Catalyst: Preparation, Characterizations and Influencing Factors</title><author>Wang, Ying ; Shen, Shuguang ; Li, Meina ; Sun, Yujuan ; Li, Binbin ; Ma, Xueping ; Zhou, Zijian ; Guo, Chenyuan</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c234w-3e5c49dca558d57371ac0d9b45fa35ad6e59062572e5ae1bfbc99e85248511cb3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Catalysis</topic><topic>Catalytic activity</topic><topic>Chemistry</topic><topic>Chemistry and Materials Science</topic><topic>Crystal structure</topic><topic>Energy conservation</topic><topic>Environmental protection</topic><topic>Hydrolysis</topic><topic>Industrial Chemistry/Chemical Engineering</topic><topic>Manganese dioxide</topic><topic>Metal oxides</topic><topic>Organometallic Chemistry</topic><topic>Physical Chemistry</topic><topic>Ureas</topic><topic>Wastewater</topic><topic>X ray photoelectron spectroscopy</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wang, Ying</creatorcontrib><creatorcontrib>Shen, Shuguang</creatorcontrib><creatorcontrib>Li, Meina</creatorcontrib><creatorcontrib>Sun, Yujuan</creatorcontrib><creatorcontrib>Li, Binbin</creatorcontrib><creatorcontrib>Ma, Xueping</creatorcontrib><creatorcontrib>Zhou, Zijian</creatorcontrib><creatorcontrib>Guo, Chenyuan</creatorcontrib><collection>CrossRef</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central UK/Ireland</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 Science Database</collection><collection>Materials Science Collection</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>Catalysis letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wang, Ying</au><au>Shen, Shuguang</au><au>Li, Meina</au><au>Sun, Yujuan</au><au>Li, Binbin</au><au>Ma, Xueping</au><au>Zhou, Zijian</au><au>Guo, Chenyuan</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Urea Hydrolysis Over α-MnO2 Catalyst: Preparation, Characterizations and Influencing Factors</atitle><jtitle>Catalysis letters</jtitle><stitle>Catal Lett</stitle><date>2019-07-01</date><risdate>2019</risdate><volume>149</volume><issue>7</issue><spage>2032</spage><epage>2042</epage><pages>2032-2042</pages><issn>1011-372X</issn><eissn>1572-879X</eissn><abstract>MnO
2
was screened from various metal oxides and different crystal structures of MnO
2
were prepared, which were used to hydrolyze urea process wastewater for energy conservation and environmental protection. The characterizations of XRD, SEM, Raman, FT-IR, XPS and H
2
-TPR were employed and the hydrolysis experiments were carried out, demonstrating that oxygen vacancy on the surface of MnO
2
might be the catalytic activity source on urea hydrolysis. By optimizing reaction influencing factors, the residual urea concentration reduced to 1.61 mg/L over
α
-MnO
2
, far below the effluent standard. Meanwhile, the temperature of heterogeneous hydrolysis over α-MnO
2
dropped drastically compared with that of thermal hydrolysis. Further, the kinetic parameters of hydrolysis were obtained over
α
-MnO
2
. And
α
-MnO
2
also showed excellent recycling ability on the reused test.
Graphical Abstract
Effect of different crystal structures MnO2 on urea degradation rate. (Catalyst dosage is 50 g/L, reaction time is 60 min, temperature is 165oC.)</abstract><cop>New York</cop><pub>Springer US</pub><doi>10.1007/s10562-019-02730-w</doi><tpages>11</tpages></addata></record> |
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| language | eng |
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| source | Springer Nature - Complete Springer Journals |
| subjects | Catalysis Catalytic activity Chemistry Chemistry and Materials Science Crystal structure Energy conservation Environmental protection Hydrolysis Industrial Chemistry/Chemical Engineering Manganese dioxide Metal oxides Organometallic Chemistry Physical Chemistry Ureas Wastewater X ray photoelectron spectroscopy |
| title | Urea Hydrolysis Over α-MnO2 Catalyst: Preparation, Characterizations and Influencing Factors |
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