Az alum\u00ednium-oxid \u00f6sszetett k\u00e9miai \u00f6sszet\u00e9tel\u0171, bele\u00e9rtve k\u00fcl\u00f6nb\u00f6z\u0151 polimorfokat, amelyek termikus \u00e1talakul\u00e1si folyamatok r\u00e9v\u00e9n - p\u00e9ld\u00e1ul a b\u00f6hmit \u00e9s a bayerit eset\u00e9ben - nagy fel\u00fclet\u0171v\u00e9 alak\u00edthat\u00f3k.<\/p>\n
A termikus boml\u00e1s sor\u00e1n lamell\u00e1s vagy sz\u00e1las g-Al2O3 keletkezik, amelyek morfol\u00f3gi\u00e1ja az el\u0151\u00e1ll\u00edt\u00e1sukhoz haszn\u00e1lt kiindul\u00e1si anyagt\u00f3l f\u00fcgg.<\/p>\n
A timf\u00f6ldhidr\u00e1t (Al(OH)3) feh\u00e9r, finoman por\u00edtott anyag, amelynek k\u00e9miai k\u00e9plete Al(OH)3. A bauxit\u00e9rcb\u0151l a Bayer-elj\u00e1r\u00e1s sor\u00e1n el\u0151\u00e1ll\u00edtott, szagtalan \u00e9s \u00edzmentes, alacsony oldhat\u00f3s\u00e1g\u00fa \u00e9s h\u0151stabil, \u00edgy rendk\u00edv\u00fcl sokoldal\u00faan felhaszn\u00e1lhat\u00f3 nyersanyag, amelyet sz\u00e1mos ipar\u00e1gban Al2O3-forr\u00e1sk\u00e9nt alkalmaznak.<\/p>\n
A gibbsite (-Al(OH)3), a bayerite (-Al(OH)3), a doyleite \u00e9s a nordstrandite az alum\u00ednium-trihidroxid Al(OH)3 n\u00e9gy, a term\u00e9szetben jellemz\u0151en el\u0151fordul\u00f3 polimorfja; mind rokonok \u00e9s hasonl\u00f3 szerkezet\u0171ek; morfol\u00f3gi\u00e1juk azonban jelent\u0151sen k\u00fcl\u00f6nb\u00f6zik, \u00e9s befoly\u00e1solja tulajdons\u00e1gaikat, a r\u00e9szecskem\u00e9ret-eloszl\u00e1st\u00f3l f\u00fcgg\u0151en elt\u00e9r\u0151 viszkozit\u00e1ssal; morfol\u00f3gi\u00e1juk azonban h\u0151kezel\u00e9ssel szab\u00e1lyozhat\u00f3, hogy meghat\u00e1rozott alkalmaz\u00e1sokhoz meghat\u00e1rozott viszkozit\u00e1st \u00e9rjenek el.<\/p>\n
Az alum\u00ednium-hidr\u00e1t \u00e9g\u00e9sg\u00e1tl\u00f3 k\u00e9pess\u00e9gei azon a k\u00e9pess\u00e9g\u00e9n alapulnak, hogy magas h\u0151m\u00e9rs\u00e9kleten v\u00edzg\u0151zt bocs\u00e1t ki, ez\u00e1ltal leh\u0171ti az anyagokat, h\u00edg\u00edtja a gy\u00fal\u00e9kony g\u00e1zokat \u00e9s lass\u00edtja a t\u0171z terjed\u00e9s\u00e9t. Ezt \u00fagy \u00e9ri el, hogy oxig\u00e9n- \u00e9s m\u00e1s gy\u00fal\u00e9kony g\u00e1zokat megk\u00f6t\u0151 g\u00e1tat hoz l\u00e9tre, megnehez\u00edtve ezen molekul\u00e1k sz\u00e1m\u00e1ra a fel\u00fclet el\u00e9r\u00e9s\u00e9t \u00e9s el\u00e9get\u00e9s\u00e9t.<\/p>\n
A timf\u00f6ldhidr\u00e1tok nagyon alacsony oxig\u00e9nfelv\u00e9tellel rendelkeznek, \u00e9s nagy reakci\u00f3k\u00e9pess\u00e9ggel rendelkeznek k\u00fcl\u00f6nb\u00f6z\u0151 g\u00e1zokkal, p\u00e9ld\u00e1ul k\u00e9n-dioxiddal, hidrog\u00e9n-szulfiddal, sz\u00e9n-monoxiddal \u00e9s nitrog\u00e9n-oxidokkal. E tulajdons\u00e1gaiknak k\u00f6sz\u00f6nhet\u0151en sz\u00e1mos alkalmaz\u00e1sban, p\u00e9ld\u00e1ul a pirotechnik\u00e1ban \u00e9s a g\u00e1zkis\u00fcl\u00e9ses l\u00e1mp\u00e1kban a k\u00e9n-oxid ide\u00e1lis helyettes\u00edt\u0151jek\u00e9nt szolg\u00e1lhatnak.<\/p>\n
A timf\u00f6ldhidr\u00e1tokat prekurzork\u00e9nt haszn\u00e1lj\u00e1k az aktiv\u00e1lt timf\u00f6ld (AA) el\u0151\u00e1ll\u00edt\u00e1s\u00e1hoz. Az aktiv\u00e1lt alum\u00ednium-oxid a timf\u00f6ld hidroxidjainak \u00e9s oxihidroxidjainak termikus boml\u00e1s\u00e1val el\u0151\u00e1ll\u00edtott ipari term\u00e9k. Sz\u00e1mos ipar\u00e1gban tal\u00e1l alkalmaz\u00e1st, k\u00fcl\u00f6n\u00f6sen a pap\u00edrban t\u00f6lt\u0151anyagk\u00e9nt vagy bevonatpigmentk\u00e9nt, valamint a gy\u00f3gyszeriparban seg\u00e9danyagk\u00e9nt; a k\u00fcl\u00f6nb\u00f6z\u0151 el\u0151\u00e1ll\u00edt\u00e1si technik\u00e1k k\u00fcl\u00f6nb\u00f6z\u0151 t\u00edpus\u00fa, egyedi tulajdons\u00e1gokkal \u00e9s alkalmaz\u00e1si lehet\u0151s\u00e9gekkel rendelkez\u0151 por\u00f3zus timf\u00f6ldet eredm\u00e9nyeznek; p\u00e9ld\u00e1ul a bayerit kalcin\u00e1l\u00e1sa (111) spinell s\u00edkokat eredm\u00e9nyez, m\u00edg az Al(OH)3 kalcin\u00e1l\u00e1sa hexakoordin\u00e1lt Al3+ ionokat.<\/p>\n
Alacsony olvad\u00e1spontja miatt a timf\u00f6ld kiv\u00e1l\u00f3 \u00e9g\u00e9sg\u00e1tl\u00f3 tulajdons\u00e1gokkal rendelkezik. Seg\u00edthet megakad\u00e1lyozni a l\u00e1ngok terjed\u00e9s\u00e9t a m\u0171anyagokban, illetve megv\u00e9dheti a t\u0171zk\u00e1rnak kitett ter\u00fcleteket a tov\u00e1bbterjed\u00e9st\u0151l. Tov\u00e1bb\u00e1, a timf\u00f6ld olajfelsz\u00edv\u00f3 k\u00e9pess\u00e9gei alkalmass\u00e1 teszik a sz\u00e9nhidrog\u00e9nnel teli l\u00e1ngok elleni v\u00e9dekez\u00e9sre; emellett felbecs\u00fclhetetlen \u00e9rt\u00e9k\u0171v\u00e9 v\u00e1lt a ken\u0151anyagok adal\u00e9kanyagak\u00e9nt a g\u00e9pek k\u00e1rosod\u00e1s\u00e1nak elker\u00fcl\u00e9se \u00e9rdek\u00e9ben.<\/p>\n
A timf\u00f6ld egy nagy mennyis\u00e9gben el\u0151fordul\u00f3 term\u00e9szetes \u00e1sv\u00e1ny, amelyet a bauxitb\u00f3l t\u00f6rt\u00e9n\u0151 alum\u00edniumkivon\u00e1s Bayer-elj\u00e1r\u00e1s\u00e1nak v\u00e9gterm\u00e9kek\u00e9nt \u00e1ll\u00edtanak el\u0151, jellemz\u0151en az oldhat\u00f3 alum\u00ednium-hidroxidok v\u00edzb\u0151l t\u00f6rt\u00e9n\u0151 kicsap\u00e1s\u00e1val vagy alum\u00ednium-trihidr\u00e1t \u00e9s alk\u00e1lif\u00e9m-hidroxidok reakci\u00f3j\u00e1val b\u00f6hmit, egy rendk\u00edv\u00fcl metastabil \u00e9s rosszul krist\u00e1lyosod\u00f3 anyag k\u00e9pz\u0151d\u00e9s\u00e9vel, amelyben az Al3+ ionok l\u00fagos k\u00f6zegben mikropor\u00f3zus oxihidroxidokat vesznek k\u00f6r\u00fcl (31). A 27Al MAS NMR t\u00f6bb koordin\u00e1ci\u00f3s szintet mutat az Al3 + \u00e9s az Al3 + k\u00f6z\u00f6tt, t\u00f6bbf\u00e9le koordin\u00e1ci\u00f3s mint\u00e1zattal (31); a g-Al2O3 BET-fel\u00fclete k\u00f6r\u00fclbel\u00fcl 275m2g-1 (41).<\/p>\n
A termikusan bomlott timf\u00f6ld k\u00fcl\u00f6nb\u00f6z\u0151 polimorf form\u00e1kat \u00f6lthet. Gyakori p\u00e9lda a gibbsite (hidrargillit is) \u00e9s a bayerit, mindkett\u0151t a Bayer-elj\u00e1r\u00e1s sor\u00e1n \u00e1ll\u00edtj\u00e1k el\u0151; a nordstrandit az \u00e9szak-amerikai bauxitlel\u0151helyek r\u00e9szek\u00e9nt fordul el\u0151; a gibbsite-ot gyakran haszn\u00e1lj\u00e1k ker\u00e1miam\u00e1zakhoz, m\u00edg a nordstranditot zom\u00e1ncokban \u00e9s k\u0151ed\u00e9nyekben lehet megtal\u00e1lni.<\/p>\n
A kicsap\u00e1s sor\u00e1n a gibbszit \u00e9s az \u00e1lbohmit g\u00e9lek ellen\u0151rz\u00f6tt v\u00edzg\u0151znyom\u00e1ssal bohmitra v\u00e1ltoznak, amikor a h\u0151m\u00e9rs\u00e9klet 80 \u00b0C al\u00e1 cs\u00f6kken; ezut\u00e1n form\u00e1juk visszaalakul eredeti, v\u00edzben k\u00f6nnyebben old\u00f3d\u00f3 alum\u00ednium-hidroxid form\u00e1jukba; \u00edgy olvad\u00e9kk\u00e1 old\u00f3dva k\u00f6nnyen old\u00f3d\u00f3 alum\u00ednium-oxidot kapnak, amely id\u0151vel vagy magasabb h\u0151m\u00e9rs\u00e9kleten k\u00f6nnyebben old\u00f3dik (60). Magasabb h\u0151m\u00e9rs\u00e9kleten vagy szigor\u00fabb \u00f6reged\u00e9si k\u00f6r\u00fclm\u00e9nyek k\u00f6z\u00f6tt ez a timf\u00f6ld-oxid v\u00e9g\u00fcl j\u00f3l krist\u00e1lyosod\u00f3 b\u00f6hmitt\u00e9 alakulhat \u00e1t (60).<\/p>\n
A timf\u00f6ld-trihidr\u00e1t, amelyet \u00e1ltal\u00e1ban kalcin\u00e1lt timf\u00f6ldk\u00e9nt \u00e9s alum\u00ednium-hidroxidk\u00e9nt is emlegetnek, rendk\u00edv\u00fcl sokoldal\u00fa t\u00f6lt\u0151anyag. M\u0171anyag-alkalmaz\u00e1sokban a k\u00fcl\u00f6nb\u00f6z\u0151 polimerek \u00e9g\u00e9sg\u00e1tl\u00e1s\u00e1nak, valamint mechanikai \u00e9s termikus tulajdons\u00e1gainak jav\u00edt\u00e1s\u00e1ra szolg\u00e1l; sokoldal\u00fas\u00e1ga j\u00f3l alkalmazhat\u00f3 \u00fcveg-, ker\u00e1mia- \u00e9s pap\u00edralkalmaz\u00e1sokban is t\u00f6lt\u0151anyagk\u00e9nt. A pap\u00edrgy\u00e1rt\u00f3k emellett bevonatpigmentk\u00e9nt, valamint a k\u00fcl\u00f6nb\u00f6z\u0151 pap\u00edrok fed\u0151k\u00e9pess\u00e9g\u00e9nek \u00e9s f\u00e9nyerej\u00e9nek n\u00f6vel\u00e9s\u00e9re haszn\u00e1lj\u00e1k; l\u00fagos jellege miatt bizonyos v\u00edzkezel\u00e9si alkalmaz\u00e1sokban is seg\u00edts\u00e9g\u00fcnkre lehet.<\/p>\n
A hidrat\u00e1lt timf\u00f6ld magas reakci\u00f3k\u00e9pess\u00e9ge miatt kiv\u00e1l\u00f3 alapanyag ker\u00e1mia alapanyagok \u00e9s m\u00e1zak el\u0151\u00e1ll\u00edt\u00e1s\u00e1hoz, \u00e9s gyakran a term\u00e9szetes nyersanyagok, p\u00e9ld\u00e1ul a f\u00f6ldp\u00e1t \u00e9s a szil\u00edcium-dioxid gazdas\u00e1gos helyettes\u00edt\u0151je. Nedves \u00e9s sz\u00e1raz form\u00e1ban is rendelkez\u00e9sre \u00e1ll, ez ut\u00f3bbi v\u00e1ltoz\u00f3 m\u00e9reteloszl\u00e1s\u00fa r\u00e9szecsk\u00e9k el\u0151\u00e1ll\u00edt\u00e1s\u00e1ra \u0151r\u00f6lhet\u0151 foly\u00e9kony energi\u00e1j\u00fa malmokban vagy ker\u00e1miab\u00e9l\u00e9s\u0171 goly\u00f3smalmokban.<\/p>\n
A m\u00e1zhoz vagy \u00fcvegolvad\u00e9khoz adott \u0151r\u00f6lt timf\u00f6ldhidr\u00e1t egy exoterm endoterm reakci\u00f3folyamat r\u00e9v\u00e9n gyorsan alum\u00ednium-oxidra \u00e9s v\u00edzmolekul\u00e1kra bomlik, ami ennek az anyagnak saj\u00e1tos \u00e9g\u00e9sg\u00e1tl\u00f3 tulajdons\u00e1gokat k\u00f6lcs\u00f6n\u00f6z, \u00e9s a reakci\u00f3 sor\u00e1n nem korrod\u00e1l\u00f3 \u00e9s nem m\u00e9rgez\u0151 f\u00fcst\u00f6t termel.<\/p>\n
Ahhoz, hogy az alum\u00ednium-oxid-trihidr\u00e1t t\u0171zg\u00e1tl\u00f3k\u00e9nt hat\u00e9konyan m\u0171k\u00f6dj\u00f6n, 220 fokot meghalad\u00f3 h\u0151m\u00e9rs\u00e9kletnek kell kitenni. Ilyen m\u00e9rt\u00e9k\u0171 felmeleg\u00edt\u00e9s eset\u00e9n az alum\u00ednium-oxid molekul\u00e1nk\u00e9nt 3 v\u00edzmolekula p\u00e1rolog g\u0151z form\u00e1j\u00e1ban a m\u00e1zolvad\u00e9kba. Az alum\u00ednium-oxid-hidr\u00e1tnak ez a boml\u00e1sa biztos\u00edtja az \u00e9g\u00e9sg\u00e1tl\u00e1s jellegzetes szintj\u00e9t, amely m\u00e1shol nem tal\u00e1lhat\u00f3 meg a t\u00f6lt\u0151anyagokban.<\/p>\n
A timf\u00f6ldhidr\u00e1t hozz\u00e1ad\u00e1sa a m\u00e1zakhoz \u00e9s \u00fcvegekhez n\u00f6velheti az \u00e1tl\u00e1tszatlans\u00e1got az\u00e1ltal, hogy g\u00e1zbubor\u00e9kokat hoz l\u00e9tre a m\u00e1zolvad\u00e9kban, seg\u00edt cs\u00f6kkenteni az \u00e9get\u00e9si zsugorod\u00e1st, mik\u00f6zben f\u00e9nyes fel\u00fcletet eredm\u00e9nyez, \u00e9s alacsony \u00e9get\u00e9si zsugorod\u00e1si ar\u00e1nyt biztos\u00edt. Tov\u00e1bb\u00e1 ide\u00e1lis v\u00e1laszt\u00e1s olyan m\u00e1zak k\u00e9sz\u00edt\u00e9s\u00e9hez, amelyek alacsony sz\u00e1r\u00edt\u00e1si zsugorod\u00e1si ar\u00e1nyt ig\u00e9nyelnek.<\/p>\n
A timf\u00f6ldhidr\u00e1t kiv\u00e1l\u00f3 kataliz\u00e1tor, amely a Bayer-elj\u00e1r\u00e1ssal g\u00e1zbubor\u00e9kokat hoz l\u00e9tre a m\u00e1zakban \u00e9s zom\u00e1ncokban az opacit\u00e1s n\u00f6vel\u00e9se \u00e9rdek\u00e9ben. Nemcsak nem m\u00e9rgez\u0151 \u00e9s alacsony az \u00e9get\u00e9si zsugorod\u00e1sa, hanem k\u00f6lts\u00e9ghat\u00e9kony, k\u00f6nnyen kezelhet\u0151, gazdas\u00e1gos \u00e9s nagy fel\u00fclettel rendelkezik - nem rossz tulajdons\u00e1gok egy olyan ipari anyagt\u00f3l, amelynek \u00e9ves termel\u00e9se el\u00e9ri a 100 milli\u00f3 tonn\u00e1t! Az \u00edgy el\u0151\u00e1ll\u00edtott timf\u00f6ld-trihidr\u00e1tot v\u00edzmentes vagy kalcin\u00e1lt form\u00e1j\u00e1ra \u0151rlik, hogy szerves \u00f6sszetev\u0151k\u00e9nt haszn\u00e1lj\u00e1k fel.<\/p>\n
K\u00fcl\u00f6nb\u00f6z\u0151 alum\u00ednium-oxid-polimorfok l\u00e9teznek, amelyek mindegyike elt\u00e9r\u0151 tulajdons\u00e1gokkal rendelkezik az Al(OH)6 peremoszt\u00e1s\u00fa okta\u00e9dereken l\u00e9v\u0151 hidroxilcsoportok elt\u00e9r\u0151 r\u00e9tegrendje, a r\u00e9tegek k\u00f6z\u00f6tti \u00e9s a r\u00e9tegeken bel\u00fcli hidrog\u00e9nk\u00f6t\u00e9s geometri\u00e1ja \u00e9s szubsztit\u00faci\u00f3s mint\u00e1zata miatt. Termodinamikai stabilit\u00e1suk m\u00e9gis hasonl\u00f3 marad - l\u00e9tez\u00e9s\u00fck ink\u00e1bb az adott anyag kinetik\u00e1j\u00e1t\u00f3l, mint termodinamikai tulajdons\u00e1gait\u00f3l f\u00fcgghet.<\/p>\n
A mikropor\u00f3zus gibbsite alum\u00ednium-oxid g\u00e9lek (pszeudobohmit \u00e9s bohmit) a g\u00e9lk\u00e9pz\u0151d\u00e9si\/flokkul\u00e1ci\u00f3s, \u00f6reged\u00e9si \u00e9s sz\u00e1r\u00edt\u00e1si folyamatok gondos kezel\u00e9s\u00e9vel hozhat\u00f3k l\u00e9tre. A g\u00e9lek v\u00edzben val\u00f3 \u00e1ztat\u00e1sa azonban a BET-fel\u00fclet helyrehozhatatlan elveszt\u00e9s\u00e9hez \u00e9s nem p\u00f3rusos bayeritt\u00e9 val\u00f3 \u00e1talakul\u00e1shoz vezet.<\/p>\n
A timf\u00f6ld-klorid magas h\u0151m\u00e9rs\u00e9kleten t\u00f6rt\u00e9n\u0151 l\u00e1ng-hidrol\u00edzise finom g-Al2O3 port eredm\u00e9nyez, amelynek \u00e1tlagos r\u00e9szecskem\u00e9rete 10 nm, fel\u00fclete pedig 130 m2g-1 . Az alum\u00ednium-oxid r\u00e9szecsk\u00e9k \u00e1ltal\u00e1ban spinellr\u00e1csosak, b\u00e1r lehetnek hexagon\u00e1lis vagy k\u00f6b\u00f6s, szoros elrendez\u00e9s\u0171 krist\u00e1lyok is.<\/p>\n
A timf\u00f6ldhidr\u00e1t az egyik legstabilabb \u00e9s legelterjedtebb timf\u00f6ld anyag, amely nagy fel\u00fclettel \u00e9s alacsony \u00e9get\u00e9si zsugorod\u00e1ssal b\u00fcszk\u00e9lkedhet, ami sz\u00e1mos alkalmaz\u00e1shoz alkalmass\u00e1 teszi. Tov\u00e1bb\u00e1 korr\u00f3zi\u00f3g\u00e1tl\u00f3 tulajdons\u00e1gai \u00e9s l\u00e1ngmentes\u00edt\u0151 tulajdons\u00e1gai alkalmass\u00e1 teszik l\u00e1ngmentes\u00edt\u0151 anyagk\u00e9nt; a korr\u00f3zi\u00f3g\u00e1tl\u00f3 kutat\u00e1sok folyamatban vannak, \u00e9s r\u00e9szecsk\u00e9i sikeresnek bizonyultak aut\u00f3katalitikus konverterek \u00e9s \u00fczemanyagcell\u00e1k \u00f6sszetev\u0151ik\u00e9nt is, k\u00f6sz\u00f6nhet\u0151en azoknak a felfedez\u00e9seknek, amelyek felt\u00e1rj\u00e1k, hogy a timf\u00f6ld r\u00e9szecsk\u00e9k v\u00edzzel reag\u00e1lva hidrog\u00e9nben gazdag g\u00e1z\u00e1ramokat hoznak l\u00e9tre, amelyek azt\u00e1n aut\u00f3k \u00e9s rep\u00fcl\u0151g\u00e9pek \u00fczemanyagak\u00e9nt el\u00e9gethet\u0151k!<\/p>","protected":false},"excerpt":{"rendered":"
Alumina has a complex chemical makeup, including various polymorphs that can be converted to high surface area forms through thermal […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"categories":[6],"tags":[],"class_list":["post-123","post","type-post","status-publish","format-standard","hentry","category-alumina-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/aluminaceramics.net\/hu\/wp-json\/wp\/v2\/posts\/123","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aluminaceramics.net\/hu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aluminaceramics.net\/hu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aluminaceramics.net\/hu\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aluminaceramics.net\/hu\/wp-json\/wp\/v2\/comments?post=123"}],"version-history":[{"count":1,"href":"https:\/\/aluminaceramics.net\/hu\/wp-json\/wp\/v2\/posts\/123\/revisions"}],"predecessor-version":[{"id":124,"href":"https:\/\/aluminaceramics.net\/hu\/wp-json\/wp\/v2\/posts\/123\/revisions\/124"}],"wp:attachment":[{"href":"https:\/\/aluminaceramics.net\/hu\/wp-json\/wp\/v2\/media?parent=123"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aluminaceramics.net\/hu\/wp-json\/wp\/v2\/categories?post=123"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aluminaceramics.net\/hu\/wp-json\/wp\/v2\/tags?post=123"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}