Aluminium silicate
Script error: No such module "about". <templatestyles src="Chembox/styles.css"/>
Template:Chembox image cellTemplate:Chembox headerbarTemplate:Chembox IndexlistTemplate:Chembox JmolTemplate:Chembox ChEMBLTemplate:Chembox ECHATemplate:Chembox E numberTemplate:Chembox IUPHAR ligandTemplate:Chembox UNIITemplate:Chembox CompToxTemplate:Chembox headerbarTemplate:Chembox Datapage checkTemplate:Chembox Footer| Template:Longitem | Template:Unbulleted list |
| ChEBI | Template:Unbulleted list |
| ChemSpider | Template:Unbulleted list |
| DrugBank | Template:Unbulleted list |
| EC Number | Template:Unbulleted list |
| KEGG | Template:Unbulleted list |
| Template:Longitem | Template:Unbulleted list |
| RTECS number | Template:Unbulleted list |
| Script error: No such module "collapsible list". | |
| Script error: No such module "collapsible list". | |
| Template:Longitem | Template:Chem/link |
| Molar mass | 162.0456 g mol−1 |
Template:Chembox Footer/trackingScript error: No such module "TemplatePar".Template:Short description
Aluminum silicate (or aluminium silicate) is a name commonly applied to chemical compounds which are derived from aluminium oxide, Al2O3 and silicon dioxide, SiO2 which may be anhydrous or hydrated, naturally occurring as minerals or synthetic. Their chemical formulae are often expressed as xAl2O3·ySiO2·zH2O. It is known as E number E559.
Main representatives
Andalusite, kyanite, and sillimanite are the principal aluminium silicate minerals.[2][3][4] The triple point of the three polymorphs is located at a temperature of Script error: No such module "convert". and a pressure of Script error: No such module "convert".. These three minerals are commonly used as index minerals in metamorphic rocks.
- Al2SiO5, (Al2O3·SiO2), which occurs naturally as the minerals andalusite, kyanite and sillimanite which have distinct crystal structures.
- Al2Si2O7, (Al2O3·2SiO2), called metakaolinite, formed from kaolin by heating at Script error: No such module "convert"..[5]
- Al6Si2O13, (3Al2O3·2SiO2), the mineral mullite, the only thermodynamically stable intermediate phase in the Al2O3-SiO2 system at atmospheric pressure.[6] This also called '3:2 mullite' to distinguish it from 2Al2O3·SiO2, Al4SiO8 '2:1 mullite'.
- 2Al2O3·SiO2, Al4SiO8 '2:1 mullite'.[6]
The above list mentions ternary materials (Si-Al-O). Kaolinite is a quaternary material (Si-Al-O-H). Also called aluminium silicate dihydrate, kaolinite occurs naturally as a mineral. Its formula is Al2Si2O5(OH)4, (Al2O3·2SiO2·2H2O).[5]
Aluminium silicate composite materials, fibres
Aluminium silicate is a type of fibrous material made of aluminium oxide and silicon dioxide, (such materials are also called aluminosilicate fibres). These are glassy solid solutions rather than chemical compounds. The compositions are often described in terms of % weight of alumina, Al2O3 and silica, SiO2. Temperature resistance increases as the % alumina increases. These fibrous materials can be encountered as loose wool, blanket, felt, paper or boards.[7]
References
<templatestyles src="Reflist/styles.css" />
- ↑ Script error: No such module "Citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ a b Handbook of Inorganic Compounds, Dale L. Perry, Taylor & Francis, 2011, Template:ISBN
- ↑ a b Ceramic and Glass Materials: Structure, Properties and Processing, James F. Shackelford, R. H. Doremus, Springer, 2008, Template:ISBN
- ↑ Concise Encyclopedia of Composite Materials, ed. Anthony Kelly, MIT Press, 1989, Template:ISBN
Script error: No such module "Check for unknown parameters".
External links
- Aluminum silicates at the University of Waterloo, Canada
Script error: No such module "Navbox". Script error: No such module "Authority control".