Additive action on boehmite precipitation in sodium aluminate solution
Precipitation of boehmite (Al 2 O 3 ·H 2 O) instead of gibbsite (Al 2 O 3 ·3H 2 O) from sodium aluminate liquor can be an energy saving option for alumina production. Gibbsite is stable at precipitation temperature lower than 90 °C. Thus when boehmite is precipitated below 90 °C it is always accompa...
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| Veröffentlicht in: | Dalton transactions : an international journal of inorganic chemistry 2010-01, Vol.39 (38), p.918-9111 |
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| container_title | Dalton transactions : an international journal of inorganic chemistry |
| container_volume | 39 |
| creator | Dash, Barsha Tripathy, B. C Bhattacharya, I. N Mishra, B. K |
| description | Precipitation of boehmite (Al
2
O
3
·H
2
O) instead of gibbsite (Al
2
O
3
·3H
2
O) from sodium aluminate liquor can be an energy saving option for alumina production. Gibbsite is stable at precipitation temperature lower than 90 °C. Thus when boehmite is precipitated below 90 °C it is always accompanied with a gibbsite phase. However, the addition of certain organic additives favours precipitation of a monophase product
i.e.
boehmite at a temperature lower than 90 °C. At a temperature as low as 60 °C additives like tartaric acid, xylose and glucose could favour the precipitation of single phase boehmite precipitation. The role of the additive is proposed to be complete inhibition of gibbsite formation and facilitation of boehmite nucleation through different extent of complex formation by multidentate ligands.
Precipitation of boehmite (Al
2
O
3
·H
2
O) instead of gibbsite (Al
2
O
3
·3H
2
O) from sodium aluminate liquor can be an energy saving option for alumina production. |
| doi_str_mv | 10.1039/c0dt00341g |
| format | Article |
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2
O
3
·H
2
O) instead of gibbsite (Al
2
O
3
·3H
2
O) from sodium aluminate liquor can be an energy saving option for alumina production. Gibbsite is stable at precipitation temperature lower than 90 °C. Thus when boehmite is precipitated below 90 °C it is always accompanied with a gibbsite phase. However, the addition of certain organic additives favours precipitation of a monophase product
i.e.
boehmite at a temperature lower than 90 °C. At a temperature as low as 60 °C additives like tartaric acid, xylose and glucose could favour the precipitation of single phase boehmite precipitation. The role of the additive is proposed to be complete inhibition of gibbsite formation and facilitation of boehmite nucleation through different extent of complex formation by multidentate ligands.
Precipitation of boehmite (Al
2
O
3
·H
2
O) instead of gibbsite (Al
2
O
3
·3H
2
O) from sodium aluminate liquor can be an energy saving option for alumina production.</description><identifier>ISSN: 1477-9226</identifier><identifier>EISSN: 1477-9234</identifier><identifier>DOI: 10.1039/c0dt00341g</identifier><identifier>PMID: 20733994</identifier><language>eng</language><publisher>England</publisher><subject>Additives ; Aluminum base alloys ; Bayer process ; Boehmite ; Nucleation ; Precipitation ; Sodium aluminate ; Xylose</subject><ispartof>Dalton transactions : an international journal of inorganic chemistry, 2010-01, Vol.39 (38), p.918-9111</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c399t-a057cae337b25876fd7dd862cc0873507fbd8b9f01492b791f6a26b09439b0033</citedby><cites>FETCH-LOGICAL-c399t-a057cae337b25876fd7dd862cc0873507fbd8b9f01492b791f6a26b09439b0033</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27903,27904</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/20733994$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Dash, Barsha</creatorcontrib><creatorcontrib>Tripathy, B. C</creatorcontrib><creatorcontrib>Bhattacharya, I. N</creatorcontrib><creatorcontrib>Mishra, B. K</creatorcontrib><title>Additive action on boehmite precipitation in sodium aluminate solution</title><title>Dalton transactions : an international journal of inorganic chemistry</title><addtitle>Dalton Trans</addtitle><description>Precipitation of boehmite (Al
2
O
3
·H
2
O) instead of gibbsite (Al
2
O
3
·3H
2
O) from sodium aluminate liquor can be an energy saving option for alumina production. Gibbsite is stable at precipitation temperature lower than 90 °C. Thus when boehmite is precipitated below 90 °C it is always accompanied with a gibbsite phase. However, the addition of certain organic additives favours precipitation of a monophase product
i.e.
boehmite at a temperature lower than 90 °C. At a temperature as low as 60 °C additives like tartaric acid, xylose and glucose could favour the precipitation of single phase boehmite precipitation. The role of the additive is proposed to be complete inhibition of gibbsite formation and facilitation of boehmite nucleation through different extent of complex formation by multidentate ligands.
Precipitation of boehmite (Al
2
O
3
·H
2
O) instead of gibbsite (Al
2
O
3
·3H
2
O) from sodium aluminate liquor can be an energy saving option for alumina production.</description><subject>Additives</subject><subject>Aluminum base alloys</subject><subject>Bayer process</subject><subject>Boehmite</subject><subject>Nucleation</subject><subject>Precipitation</subject><subject>Sodium aluminate</subject><subject>Xylose</subject><issn>1477-9226</issn><issn>1477-9234</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><recordid>eNqF0c9LwzAUB_AgipvTi3elnhSh-pK0SXMcw6kw8KLnkl_VSH_ZtAP_ezM3t9uEQALfDy-89xA6x3CHgYp7DaYHoAl-P0BjnHAeC0KTw-2bsBE68f4TgBBIyTEaEeCUCpGM0XxqjOvd0kZS966po3BUYz8q19uo7ax2revlb-LqyDfGDVUky6FytQzCN-WwCk_RUSFLb8829wS9zR9eZ0_x4uXxeTZdxDp818cSUq6lpZQrkmacFYYbkzGiNWScpsALZTIlCsCJIIoLXDBJmAKRUKFCi3SCrtd12675Gqzv88p5bctS1rYZfC4YzVLBQ3v_SZ6mWDCGkyBv9krMKUBGGRWB3q6p7hrvO1vkbecq2X3nGPLVLvLdLgK-3NQdVGXNlv4NP4CrNei83qa7AnlrimAu9hn6A7GBmMI</recordid><startdate>20100101</startdate><enddate>20100101</enddate><creator>Dash, Barsha</creator><creator>Tripathy, B. C</creator><creator>Bhattacharya, I. N</creator><creator>Mishra, B. K</creator><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QF</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>7X8</scope></search><sort><creationdate>20100101</creationdate><title>Additive action on boehmite precipitation in sodium aluminate solution</title><author>Dash, Barsha ; Tripathy, B. C ; Bhattacharya, I. N ; Mishra, B. K</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c399t-a057cae337b25876fd7dd862cc0873507fbd8b9f01492b791f6a26b09439b0033</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Additives</topic><topic>Aluminum base alloys</topic><topic>Bayer process</topic><topic>Boehmite</topic><topic>Nucleation</topic><topic>Precipitation</topic><topic>Sodium aluminate</topic><topic>Xylose</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Dash, Barsha</creatorcontrib><creatorcontrib>Tripathy, B. C</creatorcontrib><creatorcontrib>Bhattacharya, I. N</creatorcontrib><creatorcontrib>Mishra, B. K</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>Aluminium Industry Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>MEDLINE - Academic</collection><jtitle>Dalton transactions : an international journal of inorganic chemistry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Dash, Barsha</au><au>Tripathy, B. C</au><au>Bhattacharya, I. N</au><au>Mishra, B. K</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Additive action on boehmite precipitation in sodium aluminate solution</atitle><jtitle>Dalton transactions : an international journal of inorganic chemistry</jtitle><addtitle>Dalton Trans</addtitle><date>2010-01-01</date><risdate>2010</risdate><volume>39</volume><issue>38</issue><spage>918</spage><epage>9111</epage><pages>918-9111</pages><issn>1477-9226</issn><eissn>1477-9234</eissn><abstract>Precipitation of boehmite (Al
2
O
3
·H
2
O) instead of gibbsite (Al
2
O
3
·3H
2
O) from sodium aluminate liquor can be an energy saving option for alumina production. Gibbsite is stable at precipitation temperature lower than 90 °C. Thus when boehmite is precipitated below 90 °C it is always accompanied with a gibbsite phase. However, the addition of certain organic additives favours precipitation of a monophase product
i.e.
boehmite at a temperature lower than 90 °C. At a temperature as low as 60 °C additives like tartaric acid, xylose and glucose could favour the precipitation of single phase boehmite precipitation. The role of the additive is proposed to be complete inhibition of gibbsite formation and facilitation of boehmite nucleation through different extent of complex formation by multidentate ligands.
Precipitation of boehmite (Al
2
O
3
·H
2
O) instead of gibbsite (Al
2
O
3
·3H
2
O) from sodium aluminate liquor can be an energy saving option for alumina production.</abstract><cop>England</cop><pmid>20733994</pmid><doi>10.1039/c0dt00341g</doi><tpages>4</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1477-9226 |
| ispartof | Dalton transactions : an international journal of inorganic chemistry, 2010-01, Vol.39 (38), p.918-9111 |
| issn | 1477-9226 1477-9234 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_755196614 |
| source | Royal Society Of Chemistry Journals 2008-; Alma/SFX Local Collection |
| subjects | Additives Aluminum base alloys Bayer process Boehmite Nucleation Precipitation Sodium aluminate Xylose |
| title | Additive action on boehmite precipitation in sodium aluminate solution |
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