| dbo:abstract |
Hantz reactions are a class of pattern-forming precipitation reactions in gels implementing a reaction–diffusion system. The precipitation patterns are forming as a reaction of two electrolytes: a highly concentrated "outer" one diffuses into a hydrogel, while the "inner" one is dissolved in the gel itself. The colloidal precipitate which builds up the patterns is trapped by the gel and kept at the location where it is formed., similar to the Liesegang rings. The first representative of this class of reactions was the NaOH (outer electrolyte)+CuCl2 (inner electrolyte). Later the NaOH+AgNO3, the CuCl2+K3[Fe(CN)6], the NaOH+AlCl3, and the NH3+AgNO3 reactions in several hydrogels have also proved to show similar behavior. Precipitate patterns forming in these reactions are exceptionally rich. Besides the macroscopic shapes like layered structures, helices and cardioids, regular sheets of colloidal precipitate may also emerge with a periodicity even less than 20 micrometers (microscopic patterns). (en) |
| dbo:thumbnail |
wiki-commons:Special:FilePath/Sketch_of_formation_o...erns_in_Hantz_reactions.jpg?width=300 |
| dbo:wikiPageExternalLink |
http://hantz.web.elte.hu/cikk1/data.html http://www.insilico.hu/liesegang/helix/helix.html https://malagabay.wordpress.com/2013/10/29/liesegang-rings-2-spirals-helices-and-polygons/ http://hantz.web.elte.hu/cikk2/data2.html |
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1094233827 (xsd:integer) |
| dbo:wikiPageWikiLink |
dbr:Belousov–Zhabotinsky_reaction dbr:Precipitation_(chemistry) dbr:Electrolyte dbr:Liesegang_rings dbr:Reaction_intermediate dbr:Nucleation dbr:Copper(II)_chloride dbr:Gel dbr:Crystallographic_defect dbr:Cahn–Hilliard_equation dbr:Silver_nitrate dbr:Colloid dbr:Pattern_formation dbr:Phase_separation dbr:Helix dbr:Aluminium_chloride dbr:Ammonia dbr:Cardioid dbr:Diffusion dbr:Diffusion-controlled_reaction dbr:Hydrogel dbc:Chemical_reactions dbc:Gels dbr:Polyvinyl_alcohol dbr:Sodium_hydroxide dbr:Reaction–diffusion_system dbr:Voronoi_diagram dbr:Turing_pattern |
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dbt:Improve_categories dbt:Orphan dbt:Reflist dbt:Plain_image_with_caption |
| dcterms:subject |
dbc:Chemical_reactions dbc:Gels |
| rdfs:comment |
Hantz reactions are a class of pattern-forming precipitation reactions in gels implementing a reaction–diffusion system. The precipitation patterns are forming as a reaction of two electrolytes: a highly concentrated "outer" one diffuses into a hydrogel, while the "inner" one is dissolved in the gel itself. The colloidal precipitate which builds up the patterns is trapped by the gel and kept at the location where it is formed., similar to the Liesegang rings. (en) |
| rdfs:label |
Hantz reactions (en) |
| owl:sameAs |
wikidata:Hantz reactions https://global.dbpedia.org/id/DNGyv |
| prov:wasDerivedFrom |
wikipedia-en:Hantz_reactions?oldid=1094233827&ns=0 |
| foaf:depiction |
wiki-commons:Special:FilePath/Sketch_of_formation_o...copic_patterns_in_Hantz_reactions.jpg |
| foaf:isPrimaryTopicOf |
wikipedia-en:Hantz_reactions |
| is foaf:primaryTopic of |
wikipedia-en:Hantz_reactions |
