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Hydrolytic precipitation of magnesium polyvanadates in vanadium (IV, V) solutions
The phase and chemical composition of precipitates formed in Mg(VO 3 ) 2 -VOSO4-H 2 O system at initial pH from 1 to 7 and temperature from 80 to 90°C was studied. Polyvanadates of variable composition Mg x V y 4+ V 12- y 5+1 O 31–δ · n H 2 O (0.7 ≤ x ≤ 1.3, 1.2 ≤ y ≤ 2.4, 0.7 ≤ δ = 1.4) were formed...
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| Published in: | Russian journal of inorganic chemistry 2010-02, Vol.55 (2), p.305-311 |
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| Language: | English |
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| cites | cdi_FETCH-LOGICAL-c288t-dbd80b1ccc218780fac4ca358f3e5a61ef99d6865e03ea0701b28b83cd057f63 |
| container_end_page | 311 |
| container_issue | 2 |
| container_start_page | 305 |
| container_title | Russian journal of inorganic chemistry |
| container_volume | 55 |
| creator | Podval’naya, N. V. Volkov, V. L. |
| description | The phase and chemical composition of precipitates formed in Mg(VO
3
)
2
-VOSO4-H
2
O system at initial pH from 1 to 7 and temperature from 80 to 90°C was studied. Polyvanadates of variable composition Mg
x
V
y
4+
V
12-
y
5+1
O
31–δ
·
n
H
2
O (0.7 ≤ x ≤ 1.3, 1.2 ≤ y ≤ 2.4, 0.7 ≤ δ = 1.4) were formed at pH from 1 to 4 and V
4+
/V
5+
ratio from 0.43 to 9. Compounds with the general formula Mg
x
V
y
4+
V
6-
y
5+
O
16-δ
·
n
H
2
O (0.7 ≤
x
≤ 0.65,
y
= 1.0, 0.8 ≤ δ ≤ 0.85) were formed at pH from 6.0 to 7.0 and V
4+
/V
5+
ratios from 0.11 to 0.25. The maximum V
4+
concentration (
y
= 2.4) in the precipitates was achieved at the VV
4+
/V
5+
solution ratio of 1.0 and pH = 3. The precipitates in solutions with pH 3 were formed only upon addition of VO
2+
ions with the maximum rate at a V
4+
/V
5+
ratio of 0.33. These processes were limited by second-order reactions on the surface of polyvanadates. |
| doi_str_mv | 10.1134/S0036023610020270 |
| format | article |
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3
)
2
-VOSO4-H
2
O system at initial pH from 1 to 7 and temperature from 80 to 90°C was studied. Polyvanadates of variable composition Mg
x
V
y
4+
V
12-
y
5+1
O
31–δ
·
n
H
2
O (0.7 ≤ x ≤ 1.3, 1.2 ≤ y ≤ 2.4, 0.7 ≤ δ = 1.4) were formed at pH from 1 to 4 and V
4+
/V
5+
ratio from 0.43 to 9. Compounds with the general formula Mg
x
V
y
4+
V
6-
y
5+
O
16-δ
·
n
H
2
O (0.7 ≤
x
≤ 0.65,
y
= 1.0, 0.8 ≤ δ ≤ 0.85) were formed at pH from 6.0 to 7.0 and V
4+
/V
5+
ratios from 0.11 to 0.25. The maximum V
4+
concentration (
y
= 2.4) in the precipitates was achieved at the VV
4+
/V
5+
solution ratio of 1.0 and pH = 3. The precipitates in solutions with pH 3 were formed only upon addition of VO
2+
ions with the maximum rate at a V
4+
/V
5+
ratio of 0.33. These processes were limited by second-order reactions on the surface of polyvanadates.</description><identifier>ISSN: 0036-0236</identifier><identifier>EISSN: 1531-8613</identifier><identifier>DOI: 10.1134/S0036023610020270</identifier><language>eng</language><publisher>Dordrecht: SP MAIK Nauka/Interperiodica</publisher><subject>Chemistry ; Chemistry and Materials Science ; Inorganic Chemistry ; Physical Chemistry of Solutions</subject><ispartof>Russian journal of inorganic chemistry, 2010-02, Vol.55 (2), p.305-311</ispartof><rights>Pleiades Publishing, Ltd. 2010</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c288t-dbd80b1ccc218780fac4ca358f3e5a61ef99d6865e03ea0701b28b83cd057f63</citedby><cites>FETCH-LOGICAL-c288t-dbd80b1ccc218780fac4ca358f3e5a61ef99d6865e03ea0701b28b83cd057f63</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27903,27904</link.rule.ids></links><search><creatorcontrib>Podval’naya, N. V.</creatorcontrib><creatorcontrib>Volkov, V. L.</creatorcontrib><title>Hydrolytic precipitation of magnesium polyvanadates in vanadium (IV, V) solutions</title><title>Russian journal of inorganic chemistry</title><addtitle>Russ. J. Inorg. Chem</addtitle><description>The phase and chemical composition of precipitates formed in Mg(VO
3
)
2
-VOSO4-H
2
O system at initial pH from 1 to 7 and temperature from 80 to 90°C was studied. Polyvanadates of variable composition Mg
x
V
y
4+
V
12-
y
5+1
O
31–δ
·
n
H
2
O (0.7 ≤ x ≤ 1.3, 1.2 ≤ y ≤ 2.4, 0.7 ≤ δ = 1.4) were formed at pH from 1 to 4 and V
4+
/V
5+
ratio from 0.43 to 9. Compounds with the general formula Mg
x
V
y
4+
V
6-
y
5+
O
16-δ
·
n
H
2
O (0.7 ≤
x
≤ 0.65,
y
= 1.0, 0.8 ≤ δ ≤ 0.85) were formed at pH from 6.0 to 7.0 and V
4+
/V
5+
ratios from 0.11 to 0.25. The maximum V
4+
concentration (
y
= 2.4) in the precipitates was achieved at the VV
4+
/V
5+
solution ratio of 1.0 and pH = 3. The precipitates in solutions with pH 3 were formed only upon addition of VO
2+
ions with the maximum rate at a V
4+
/V
5+
ratio of 0.33. These processes were limited by second-order reactions on the surface of polyvanadates.</description><subject>Chemistry</subject><subject>Chemistry and Materials Science</subject><subject>Inorganic Chemistry</subject><subject>Physical Chemistry of Solutions</subject><issn>0036-0236</issn><issn>1531-8613</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><recordid>eNp9kE1LxDAQhoMoWFd_gLccFazOJG2aPcqi7sKCiMteS5omS5Z-kbRC_72t603wNAzP-wzDS8gtwiMiT54-AbgAxgUCMGAZnJEIU46xFMjPSTTjeOaX5CqEI0CSQCYj8rEeS99WY-807bzRrnO96l3b0NbSWh0aE9xQ026KfKlGlao3gbqG_iwzudvsH-j-noa2GmYvXJMLq6pgbn7nguxeX3ardbx9f9usnrexZlL2cVmUEgrUWjOUmQSrdKIVT6XlJlUCjV0uSyFFaoAbBRlgwWQhuS4hzazgC4Kns9q3IXhj8867WvkxR8jnSvI_lUwOOzlhyjYH4_NjO_hm-vIf6RsDbWOi</recordid><startdate>20100201</startdate><enddate>20100201</enddate><creator>Podval’naya, N. V.</creator><creator>Volkov, V. L.</creator><general>SP MAIK Nauka/Interperiodica</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20100201</creationdate><title>Hydrolytic precipitation of magnesium polyvanadates in vanadium (IV, V) solutions</title><author>Podval’naya, N. V. ; Volkov, V. L.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c288t-dbd80b1ccc218780fac4ca358f3e5a61ef99d6865e03ea0701b28b83cd057f63</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Chemistry</topic><topic>Chemistry and Materials Science</topic><topic>Inorganic Chemistry</topic><topic>Physical Chemistry of Solutions</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Podval’naya, N. V.</creatorcontrib><creatorcontrib>Volkov, V. L.</creatorcontrib><collection>CrossRef</collection><jtitle>Russian journal of inorganic chemistry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Podval’naya, N. V.</au><au>Volkov, V. L.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Hydrolytic precipitation of magnesium polyvanadates in vanadium (IV, V) solutions</atitle><jtitle>Russian journal of inorganic chemistry</jtitle><stitle>Russ. J. Inorg. Chem</stitle><date>2010-02-01</date><risdate>2010</risdate><volume>55</volume><issue>2</issue><spage>305</spage><epage>311</epage><pages>305-311</pages><issn>0036-0236</issn><eissn>1531-8613</eissn><abstract>The phase and chemical composition of precipitates formed in Mg(VO
3
)
2
-VOSO4-H
2
O system at initial pH from 1 to 7 and temperature from 80 to 90°C was studied. Polyvanadates of variable composition Mg
x
V
y
4+
V
12-
y
5+1
O
31–δ
·
n
H
2
O (0.7 ≤ x ≤ 1.3, 1.2 ≤ y ≤ 2.4, 0.7 ≤ δ = 1.4) were formed at pH from 1 to 4 and V
4+
/V
5+
ratio from 0.43 to 9. Compounds with the general formula Mg
x
V
y
4+
V
6-
y
5+
O
16-δ
·
n
H
2
O (0.7 ≤
x
≤ 0.65,
y
= 1.0, 0.8 ≤ δ ≤ 0.85) were formed at pH from 6.0 to 7.0 and V
4+
/V
5+
ratios from 0.11 to 0.25. The maximum V
4+
concentration (
y
= 2.4) in the precipitates was achieved at the VV
4+
/V
5+
solution ratio of 1.0 and pH = 3. The precipitates in solutions with pH 3 were formed only upon addition of VO
2+
ions with the maximum rate at a V
4+
/V
5+
ratio of 0.33. These processes were limited by second-order reactions on the surface of polyvanadates.</abstract><cop>Dordrecht</cop><pub>SP MAIK Nauka/Interperiodica</pub><doi>10.1134/S0036023610020270</doi><tpages>7</tpages></addata></record> |
| fulltext | fulltext |
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| ispartof | Russian journal of inorganic chemistry, 2010-02, Vol.55 (2), p.305-311 |
| issn | 0036-0236 1531-8613 |
| language | eng |
| recordid | cdi_crossref_primary_10_1134_S0036023610020270 |
| source | Springer Nature |
| subjects | Chemistry Chemistry and Materials Science Inorganic Chemistry Physical Chemistry of Solutions |
| title | Hydrolytic precipitation of magnesium polyvanadates in vanadium (IV, V) solutions |
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