Production of Titanate Microspheres by Sol-Gel and Spray-Drying
Porous titanate precursor microspheres (20–60 μm in diameter), with a high sorption capacity for radioactive wastes from nuclear reprocessing plants, have been produced on a 50 kg scale by spray-drying precursor sols. Well-dispersed, stable sols were produced by hydrolyzing acetic acid modified tetr...
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| Veröffentlicht in: | Journal of sol-gel science and technology 1998-01, Vol.13 (1-3), p.1011-1016 |
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| creator | Sizgek, E Bartlett, J R Brungs, M P |
| description | Porous titanate precursor microspheres (20–60 μm in diameter), with a high sorption capacity for radioactive wastes from nuclear reprocessing plants, have been produced on a 50 kg scale by spray-drying precursor sols. Well-dispersed, stable sols were produced by hydrolyzing acetic acid modified tetraisopropyltitanate and peptizing the titania hydrolysate with acidic zirconia sol. The resulting TiO2 /ZrO2 sols were routinely concentrated to 900 g dm−3 (oxide basis) and exhibited excellent stability. These sols were subsequently mixed with dispersible alumina powder and partially aggregated by adding calcium and barium nitrate salts. The resulting sols were spray-dried to produce microspheres with controlled porosity and morphology. The properties of the spray-dried powder were very dependent upon the chemical properties of the precursor sol. In particular, hollow spheres were produced from well-dispersed sols, whereas solid spheres could be produced from partially-aggregated sols. |
| doi_str_mv | 10.1023/A:1008612415777 |
| format | Article |
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Well-dispersed, stable sols were produced by hydrolyzing acetic acid modified tetraisopropyltitanate and peptizing the titania hydrolysate with acidic zirconia sol. The resulting TiO2 /ZrO2 sols were routinely concentrated to 900 g dm−3 (oxide basis) and exhibited excellent stability. These sols were subsequently mixed with dispersible alumina powder and partially aggregated by adding calcium and barium nitrate salts. The resulting sols were spray-dried to produce microspheres with controlled porosity and morphology. The properties of the spray-dried powder were very dependent upon the chemical properties of the precursor sol. In particular, hollow spheres were produced from well-dispersed sols, whereas solid spheres could be produced from partially-aggregated sols.</description><identifier>ISSN: 0928-0707</identifier><identifier>EISSN: 1573-4846</identifier><identifier>DOI: 10.1023/A:1008612415777</identifier><language>eng</language><publisher>New York: Springer Nature B.V</publisher><subject>Acetic acid ; Aluminum oxide ; Barium ; Chemical properties ; Dispersion ; Drying ; Microspheres ; Morphology ; Organic chemistry ; Porosity ; Precursors ; Radioactive wastes ; Reprocessing ; Sol-gel processes ; Sols ; Titanium dioxide ; Zirconium dioxide</subject><ispartof>Journal of sol-gel science and technology, 1998-01, Vol.13 (1-3), p.1011-1016</ispartof><rights>Journal of Sol-Gel Science and Technology is a copyright of Springer, (1998). 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In particular, hollow spheres were produced from well-dispersed sols, whereas solid spheres could be produced from partially-aggregated sols.</description><subject>Acetic acid</subject><subject>Aluminum oxide</subject><subject>Barium</subject><subject>Chemical properties</subject><subject>Dispersion</subject><subject>Drying</subject><subject>Microspheres</subject><subject>Morphology</subject><subject>Organic chemistry</subject><subject>Porosity</subject><subject>Precursors</subject><subject>Radioactive wastes</subject><subject>Reprocessing</subject><subject>Sol-gel processes</subject><subject>Sols</subject><subject>Titanium dioxide</subject><subject>Zirconium dioxide</subject><issn>0928-0707</issn><issn>1573-4846</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1998</creationdate><recordtype>article</recordtype><sourceid>AFKRA</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNotzc1LwzAYgPEgCtbp2WvAc_TNR_OmXmRMncJEYfM8kjTRjtLUtD30v3egp9_teQi55nDLQci75T0HMJoLxUtEPCHFUcmUUfqUFFAJwwABz8nFMBwAoFQcC_LwkVM9-bFJHU2R7prRdnYM9K3xOQ39d8hhoG6m29SydWip7Wq67bOd2WOem-7rkpxF2w7h6t8F-Xx-2q1e2OZ9_bpabpgXAkeGkYM3WqL1Gh3UKLnS0nvnRFDBBiWUdVEJz8HJiKaWPppYcRROo9FGLsjNX7fP6WcKw7g_pCl3x-VeiLIqS6NQyl8ejEpI</recordid><startdate>19980101</startdate><enddate>19980101</enddate><creator>Sizgek, E</creator><creator>Bartlett, J R</creator><creator>Brungs, M P</creator><general>Springer Nature B.V</general><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>L6V</scope><scope>M7S</scope><scope>PDBOC</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope></search><sort><creationdate>19980101</creationdate><title>Production of Titanate Microspheres by Sol-Gel and Spray-Drying</title><author>Sizgek, E ; Bartlett, J R ; Brungs, M P</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c227t-7f10c8637ac67b0d731463ccbb2e4eae424abf42c10b3f78d3cf8f9172b678683</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1998</creationdate><topic>Acetic acid</topic><topic>Aluminum oxide</topic><topic>Barium</topic><topic>Chemical properties</topic><topic>Dispersion</topic><topic>Drying</topic><topic>Microspheres</topic><topic>Morphology</topic><topic>Organic chemistry</topic><topic>Porosity</topic><topic>Precursors</topic><topic>Radioactive wastes</topic><topic>Reprocessing</topic><topic>Sol-gel processes</topic><topic>Sols</topic><topic>Titanium dioxide</topic><topic>Zirconium dioxide</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sizgek, E</creatorcontrib><creatorcontrib>Bartlett, J R</creatorcontrib><creatorcontrib>Brungs, M P</creatorcontrib><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</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>ProQuest Engineering Collection</collection><collection>Engineering 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><collection>Engineering Collection</collection><jtitle>Journal of sol-gel science and technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Sizgek, E</au><au>Bartlett, J R</au><au>Brungs, M P</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Production of Titanate Microspheres by Sol-Gel and Spray-Drying</atitle><jtitle>Journal of sol-gel science and technology</jtitle><date>1998-01-01</date><risdate>1998</risdate><volume>13</volume><issue>1-3</issue><spage>1011</spage><epage>1016</epage><pages>1011-1016</pages><issn>0928-0707</issn><eissn>1573-4846</eissn><abstract>Porous titanate precursor microspheres (20–60 μm in diameter), with a high sorption capacity for radioactive wastes from nuclear reprocessing plants, have been produced on a 50 kg scale by spray-drying precursor sols. 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| fulltext | fulltext |
| identifier | ISSN: 0928-0707 |
| ispartof | Journal of sol-gel science and technology, 1998-01, Vol.13 (1-3), p.1011-1016 |
| issn | 0928-0707 1573-4846 |
| language | eng |
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| source | SpringerNature Complete Journals |
| subjects | Acetic acid Aluminum oxide Barium Chemical properties Dispersion Drying Microspheres Morphology Organic chemistry Porosity Precursors Radioactive wastes Reprocessing Sol-gel processes Sols Titanium dioxide Zirconium dioxide |
| title | Production of Titanate Microspheres by Sol-Gel and Spray-Drying |
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