Txoj Kev Txo Tungstate

Kev npaj ntawm tungsten hmoov siv ammonium paratungstate (APT) yog txoj kev siv ntau tshaj plaws hauv kev lag luam. APT yog thawj zaug calcined rau hauv tungsten oxide (daj tungsten lossis xiav tungsten) nyob rau hauv qhov chaw tsis muaj zog, thiab tom qab ntawd txo qis rau tungsten hmoov siv hydrogen. Wang Yaxiong et al. kawm ib qho tshiab - cov txheej txheem rau kev npaj tungsten hmoov siv ammonium paratungstate ua raw khoom. Thawj theem ntawm cov txheej txheem no suav nrog kev txo qis ntawm APT los npaj ib qho xiav tungsten nruab nrab. Ib qho nyiaj ntawm APT yog hnyav thiab purged nrog nitrogen rau 20 feeb nyob rau hauv lub qhov cub txo hydrogen, thaum ib qho kev faib ua feem ntawm hydrogen thiab nitrogen sib tov yog ib txhij qhia kom muaj ib tug tsis muaj zog txo cua nyob rau hauv lub cub tawg. Thaum qhov kub nce mus txog tus nqi teev, nws tau tuav ntawm qhov ntsuas kub no kom tshem tawm cov dej noo thiab ammonia. Tom qab ntawd qhov kub thiab txias yog nce ntawm tus nqi tswj mus rau qhov predetermined hydrogen txo kub.

Qhov thib ob theem ntawm hydrogen txo, siv hydrogen, yields tungsten hmoov. Piv nrog rau ob qho tib si -txoj kev txo cov kauj ruam, tungsten hmoov npaj los ntawm ib qho -txoj kev txo cov kauj ruam siv APT muaj qhov tseem ceeb ntawm cov nplej loj, uas tswj tau, thiab cov khoom ua tau raws li qhov yuav tsum tau ua ntawm cov khoom lag luam uas twb muaj lawm. Nws cov cuab yeej thev naus laus zis yog tias nws muab cov calcination ntawm cov khoom siv raw hmoov thiab txo cov hydrogen ntawm tungsten oxide rau hauv ib txheej txheem, txo cov theem nrab thiab txhim kho kev tsim khoom.