Pfungwa
Kana iwe ukashandura CO2 kuita gasi rekugadzira, unowana yakakosha mbishi zvinhu zveindasitiri yemakemikari. Vatsvagiri veTU Wien vanoratidza kuti izvi zvinoshanda sei kunyangwe pakamuri tembiricha uye nekumanikidza kwemukati.
Chero ani anofunga nezve CO2 anogona kukurumidza kufunga mazwi akadai sekukuvadza kune mamiriro ekunze kana tsvina. Nepo CO2 yaivepo kwenguva yakareba - tsvina yakachena - maitiro akawanda uye akawanda ari kugadzirwa ayo gasi regreenhouse rinogona kushandurwa kuita zvinhu zvakakosha. Iyo chemistry inobva yataura nezve "value-added chemicals". Chinhu chitsva chinoita kuti izvi zviitike chakagadzirwa paVienna University of Technology uye ichangobva kuburitswa mujenari Communications Chemistry.
Boka rekutsvagisa raDominik Eder rakagadzira chinhu chitsva chinofambisa shanduko ye CO2. Aya maMOCHA - aya ndiwo organometallic chalcogenolate makomisheni anoshanda seanokonzeresa. Mhedzisiro yekushandurwa kweelectrochemical is synthesis gasi, kana syngas kwenguva pfupi, inova chinhu chakakosha mbishi kuindasitiri yemakemikari.
CO2 inova gasi rekugadzira
Syngas musanganiswa wecarbon monoxide (CO), hydrogen (H2) uye mamwe magasi uye inoshandiswa seyakabikwa kune zvimwe zvinhu. Imwe yeminda inonyanya kukosha yekushandiswa ndeyekugadzirwa kwefetereza, umo ammonia inogadzirwa kubva kune synthesis gasi. Nekudaro, inogona zvakare kushandiswa kugadzira mafuta akadai sedhiziri kana kugadzira methanol, iyo inoshandiswa mumafuta emafuta. Sezvo kubviswa kwe CO2 kubva mumhepo kunonyanya kushandisa simba, zvine musoro kuburitsa CO2 kubva mumaindasitiri zvirimwa. Kubva ipapo inogona kushanda sechinhu chekutanga chemakemikari akasiyana.
Nekudaro, nzira dzakapfuura dzinoda tembiricha yepamusoro uye kumanikidza pamwe nezvinodhura zvinokonzeresa. Vatsvagiri veViennese saka vakatsvaga zvinokonzeresa izvo syngas inogona zvakare kugadzirwa pane yakaderera tembiricha uye ambient pressure. "MOCHAs inoshanda zvakasiyana nezvinokonzeresa zvakashandiswa kusvika parizvino: Panzvimbo pekupisa, magetsi anopiwa kuti avhure iyo catalyst uye atange shanduko ye CO2 kuita gasi rekugadzira," anotsanangura kudaro Junior Group Mutungamiriri Dogukan Apaydin, uyo ari kutungamira nzira dzekushandura CO2 munharaunda. tsvakurudzo dzeboka rekutsvakurudza.
MOCHAs sevanogadzirisa matambudziko
MOCHAs inoumba kirasi yezvinhu zvakagadziridzwa makore angangoita makumi maviri apfuura, asi haasati awana chero application. Iyo organic-inorganic hybrid zvinhu saka zvakangowana mukurumbira mumakore achangopfuura. Vatsvagiri veTU vakaziva kugona kweMOCHAs sezvinokonzeresa uye vakaita ongororo navo kekutanga. Zvakadaro, vakatarisana nematambudziko akati wandei: Nzira dzekare dzekugadzira dzaingoburitsa zvidiki zvechigadzirwa uye dzaida nguva yakawanda. "Tichishandisa nzira yedu yekubatanidza, takakwanisa kuwedzera zvakanyanya kuwanda kwechigadzirwa uye kupfupisa nguva kubva pa20 kusvika kumaawa mashanu," anotsanangura Apaydin nzira yekugadzira nyowani yeMOCHAs.
Miedzo yekutanga yakaratidza kuti iyo catalytic performance yeMOCHAs mukugadzirwa kwegasi rekugadzira kubva kuCO2 inofananidzwa neiyo catalysts yakagadzwa kusvika zvino. Uye zvakare, ivo vanoda simba shoma shoma sezvo maitiro ese anogona kuitwa pakamuri tembiricha. Pamusoro pezvo, maMOCHA aratidza kuve akagadzikana zvakanyanya. Inogona kushandiswa muzvinonyungudutsa zvakasiyana, patembiricha dzakasiyana, kana pasi pemamiriro akasiyana epH, uye chengetedza chimiro chayo kunyangwe mushure mecatalysis.
Zvakangodaro, kune mamwe ma paramita ayo timu yakatenderedza Dogukan Apaydin uye mudzidzi wechiremba Hannah Rabl vachiri kutsvagisa. Kushandisa maelectrode akafanana kakawanda kuendesa simba muchimiro chezvino kunoratidza kudonha kushoma mukuita. Kubatana pakati peMOCHA uye electrode kunogona kuvandudzwa sei kudzivirira kudonha uku mukuita iko zvino kuri kuongororwa mukuedza kwenguva refu. "Isu tichiri padanho rekutanga rekunyorera," akadaro Dogukan Apaydin. “Ndinoda kuenzanisa izvi nemagetsi ezuva, ayo makore 30 apfuura akanga akaoma zvikuru uye achidhura kugadzira kupfuura zvaari nhasi. Nezvivakwa zvakanaka uye kuda kwezvematongerwo enyika, zvisinei, maMOCHA anogona zvakare kushandiswa zvakanyanya mune ramangwana mukushandurwa kwe CO2 kuita gasi rekugadzira uye nekudaro kuita mupiro wavo mukudzivirira kwemamiriro ekunze, "Apaydin ane chokwadi.
