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[{"key": "dc.contributor.advisor", "value": "Lahtinen, Manu", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Forsblom, Samu", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Salonen, Kasperi", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2022-08-09T05:49:46Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2022-08-09T05:49:46Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2022", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/82442", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Ilmakeh\u00e4n kasvavan hiilidioksidipitoisuuden aiheuttama ilmastonmuutos on yksi nykyajan suurimmista globaaleista uhista, ja sen hillitsemiseksi on teht\u00e4v\u00e4 huomattavia ja v\u00e4litt\u00f6mi\u00e4 muutoksia, joilla pystyt\u00e4\u00e4n v\u00e4hent\u00e4m\u00e4\u00e4n ihmisen aiheuttamia kasvihuonekaasup\u00e4\u00e4st\u00f6j\u00e4. Hiilidioksidia (CO2) otetaan nykyp\u00e4iv\u00e4n\u00e4 runsaasti talteen erilaisista pistel\u00e4hteist\u00e4, kuten esimerkiksi suurista tehtaista ja energiantuotantolaitoksista, mutta t\u00e4m\u00e4 ei yksin\u00e4\u00e4n riit\u00e4 laskemaan jo kohonnutta ilmakeh\u00e4n CO2-pitoisuutta riitt\u00e4v\u00e4sti, vaan sen lis\u00e4ksi tarvitaan my\u00f6s hiilidioksidin suoraa talteenottoa ilmasta (Direct air capture, DAC). Talteen otetusta CO2:sta on mahdollista valmistaa polttoaineita, kuten esimerkiksi metanolia, tai se voidaan s\u00e4il\u00f6\u00e4 syv\u00e4lle maanalaisiin varastoihin tai meren pohjaan. Yksi potentiaalisista DAC-olosuhteissa teht\u00e4v\u00e4\u00e4n talteenottoon k\u00e4ytett\u00e4vist\u00e4 sorbenttivaihtoehdoista ovat metalliorgaaniset verkkorakenteet (Metal-organic framework, MOF).\n\nMOF:it ovat nimens\u00e4 mukaisesti metalli-ioneista tai klustereista sek\u00e4 niit\u00e4 yhdist\u00e4vist\u00e4 orgaanisista ligandeista koostuvia verkkorakenteita, joilla on usein mielenkiintoisia ominaisuuksia kuten suuri huokoisuus ja ominaispinta-ala. Lis\u00e4ksi niiden sis\u00e4lt\u00e4m\u00e4t ligandit ovat usein muokattavissa postsynteettisesti orgaanisen kemian keinoin. MOF:ien valmistukseen k\u00e4ytet\u00e4\u00e4n tyypillisesti paljon energiaa vaativia solvotermisi\u00e4 reaktioita, mutta nyky\u00e4\u00e4n on kehitetty my\u00f6s vaihtoehtoisia synteesimenetelmi\u00e4, joilla synteesin energiatehokkuutta voidaan parantaa. Lis\u00e4ksi uusilla menetelmill\u00e4 on mahdollista valmistaa MOF:eja ilman ymp\u00e4rist\u00f6lle haitallisia orgaanisia liuottimia. MOF:it ovat usein jauhemaisia, joten teollisen mittakaavan k\u00e4ytt\u00f6\u00e4 varten niist\u00e4 tulee valmistaa suurempia kappaleita, kuten esimerkiksi kalvoja tai pellettej\u00e4.\n\nTutkielman kokeellisessa osassa valmistettiin uusia kirjallisuudesta l\u00f6ytyneeseen 4,4'-(4-amino-4H-1,2,4-triatsoli-3,5-diyyli)dibentsoehappoon (dbatH2) pohjautuvia MOF-rakenteita, joiden rakennetta ja CO2-adsorptio-ominaisuuksia karakterisoitiin. Ligandin huonon liukoisuuden vuoksi siit\u00e4 valmistettiin natriumsuola (dbatNa2), jonka avulla ligandista saatiin vesiliukoinen. Natriumsuolan avulla onnistuttiin tuottamaan kolmea erilaista karakterisointikelpoista sinkki\u00e4 sis\u00e4lt\u00e4v\u00e4\u00e4 MOF-rakennetta, joista yksi sis\u00e4lsi kahta eri ligandia. Termogravimetristen sorptiomittausten perusteella kokeellisessa osuudessa tutkittujen MOF-rakenteiden CO2-talteenottokapasiteetit j\u00e4iv\u00e4t melko marginaalisiksi (< 1 mmol/g), mutta toisaalta tutkimusten aikana havaittu ligandin ja MOF:ien fluoresenssi voi mahdollistaa niille muita k\u00e4ytt\u00f6kohteita.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Paivi Vuorio (paelvuor@jyu.fi) on 2022-08-09T05:49:46Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2022-08-09T05:49:46Z (GMT). No. of bitstreams: 0\n Previous issue date: 2022", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "106", "language": "", "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.format.mimetype", "value": "application/pdf", "language": null, "element": "format", "qualifier": "mimetype", "schema": "dc"}, {"key": "dc.language.iso", "value": "fin", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.rights", "value": "In Copyright", "language": "en", "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.subject.other", "value": "metalliorgaaniset verkkorakenteet", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "MOF", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "DAC", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "4,4'-(4-amino-4H-1,2,4-triatsoli-3,5-diyyli)dibentsoehappopohjaiset metalliorgaaniset verkkorakenteet ja hiilidioksidin suora talteenotto ilmasta", "language": "", "element": "title", "qualifier": null, "schema": "dc"}, {"key": "dc.type", "value": "master thesis", "language": null, "element": "type", "qualifier": null, "schema": "dc"}, {"key": "dc.identifier.urn", "value": "URN:NBN:fi:jyu-202208093993", "language": "", "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Pro gradu -tutkielma", "language": "fi", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Master\u2019s thesis", "language": "en", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Matemaattis-luonnontieteellinen tiedekunta", "language": "fi", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Faculty of Sciences", "language": "en", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Kemian laitos", "language": "fi", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Department of Chemistry", "language": "en", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": "fi", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": "en", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Ep\u00e4orgaaninen kemia", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Inorganic Chemistry", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "yvv.contractresearch.funding", "value": "0", "language": "", "element": "contractresearch", "qualifier": "funding", "schema": "yvv"}, {"key": "dc.type.coar", "value": "http://purl.org/coar/resource_type/c_bdcc", "language": null, "element": "type", "qualifier": "coar", "schema": "dc"}, {"key": "dc.rights.accesslevel", "value": "openAccess", "language": null, "element": "rights", "qualifier": "accesslevel", "schema": "dc"}, {"key": "dc.type.publication", "value": "masterThesis", "language": null, "element": "type", "qualifier": "publication", "schema": "dc"}, {"key": "dc.subject.oppiainekoodi", "value": "40312", "language": "", "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "talteenotto", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "hiilidioksidi", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "kemia", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.format.content", "value": "fulltext", "language": null, "element": "format", "qualifier": "content", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://rightsstatements.org/page/InC/1.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}, {"key": "dc.type.okm", "value": "G2", "language": null, "element": "type", "qualifier": "okm", "schema": "dc"}]
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