Cov kws tshawb fawb German tau tshaj tawm nyob rau hauv qhov tseeb qhov teeb meem ntawm UK phau ntawv journal Nature tias lawv tau tsim cov txheej txheem tshiab alloy smelting uas tuaj yeem tig cov hlau oxides rau hauv cov hlau nplaum zoo li hauv ib kauj ruam. Cov thev naus laus zis tsis tas yuav melting thiab sib tov cov hlau tom qab nws tau muab rho tawm, uas yuav pab txo qis cov pa hluav taws xob hauv tsev thiab txuag hluav taws xob.

Cov kws tshawb fawb ntawm Max Planck lub koom haum rau Sustainable Materials nyob rau hauv lub teb chaws Yelemees siv hydrogen es tsis txhob ntawm carbon raws li ib tug txo tus neeg sawv cev rau rho tawm cov hlau thiab tsim cov hlau nyob rau hauv qhov kub thiab txias nyob rau hauv lub melting point ntawm cov hlau, thiab tau ua tiav ua tau zoo ntawm tsawg-expansion alloys nyob rau hauv kev sim. Qhov qis-expansion alloys yog tsim los ntawm 64% hlau thiab 36% npib tsib xee, thiab tuaj yeem tswj lawv cov ntim hauv qhov kub thiab txias, ua rau lawv siv dav hauv kev lag luam.

Cov kws tshawb fawb tau sib xyaw cov oxides ntawm cov hlau thiab npib tsib xee nyob rau hauv qhov kev faib ua feem rau qhov qis-expansion alloys, av lawv sib npaug nrog lub pob zeb thiab nias rau hauv cov ncuav me me. Tom qab ntawd lawv muab cov ncuav qab zib tso rau hauv qhov cub kom txog 700 degrees Celsius thiab qhia txog hydrogen. Qhov kub tsis siab txaus los yaj cov hlau lossis npib tsib xee, tab sis siab txaus kom txo cov hlau. Kev ntsuam xyuas pom tau tias cov txheej txheem block-shaped hlau muaj cov yam ntxwv ntawm cov hlau tsis tshua muaj kev nthuav dav thiab muaj cov khoom siv zoo dua qub vim nws cov nplej me me. Vim tias cov khoom tiav yog nyob rau hauv daim ntawv ntawm ib qho thaiv es tsis yog hmoov los yog nanoparticles, nws yog ib qho yooj yim rau cam khwb cia thiab txheej txheem.

Kev sib xyaw ua ke ntawm cov hlau sib xyaw suav nrog peb kauj ruam: ua ntej, cov hlau oxides hauv cov ore raug txo kom hlau los ntawm carbon, tom qab ntawd cov hlau yog decarbonized thiab cov hlau sib txawv yog yaj thiab sib tov, thiab thaum kawg, thermal-mechanical processing yog nqa tawm los kho cov microstructure ntawm alloy muab nws cov khoom tshwj xeeb. Cov kauj ruam no siv ntau lub zog, thiab cov txheej txheem ntawm kev siv cov pa roj carbon monoxide los txo cov hlau ua kom muaj cov pa roj carbon dioxide ntau. Cov pa roj carbon emissions los ntawm kev lag luam hlau suav txog li 10% ntawm lub ntiaj teb tag nrho.

Cov kws tshawb fawb tau hais tias cov khoom siv los ntawm kev siv hydrogen los txo cov hlau yog dej, nrog xoom carbon emissions, thiab cov txheej txheem yooj yim muaj peev xwm loj rau kev txuag hluav taws xob. Txawm li cas los xij, cov kev sim siv oxides ntawm hlau thiab npib tsib xee ntawm purity siab, thiab kev ua haujlwm zoo