Isopropanolyog cov kua tsis muaj xim, flammable uas tau siv dav hauv ntau yam lag luam xws li cov kuab tshuaj, roj hmab, cov nplaum, thiab lwm yam. Ib txoj hauv kev los tsim isopropanol yog los ntawm hydrogenation ntawm acetone. Hauv tsab xov xwm no, peb yuav delve tob rau hauv cov txheej txheem no.

Thawj kauj ruam hauv kev hloov pauv ntawm acetone rau isopropanol yog los ntawm hydrogenation. Qhov no yog ua tiav los ntawm reacting acetone nrog hydrogen gas nyob rau hauv lub xub ntiag ntawm ib tug catalyst. Qhov sib npaug ntawm cov tshuaj tiv thaiv rau cov txheej txheem no yog:

2CH3C(O)CH3 + 3H2 -> 2CH3CHOHCH3

Cov catalyst siv nyob rau hauv cov tshuaj tiv thaiv no feem ntau yog cov hlau zoo xws li palladium lossis platinum. Qhov kom zoo dua ntawm kev siv cov catalyst yog tias nws txo qis lub zog ua kom muaj zog rau cov tshuaj tiv thaiv mus ntxiv, ua kom nws ua tau zoo.

Tom qab cov kauj ruam hydrogenation, cov khoom tsim tawm yog sib xyaw ntawm isopropanol thiab dej. Cov kauj ruam tom ntej hauv cov txheej txheem suav nrog kev sib cais ob yam. Qhov no feem ntau yog ua los ntawm txoj kev distillation. Cov ntsiab lus kub ntawm cov dej thiab isopropanol yog nyob ze rau ib leeg, tab sis los ntawm kev sib cais ntawm cov fractional distillation, lawv tuaj yeem sib cais tau zoo.

Thaum cov dej raug tshem tawm, cov khoom tsim tawm yog cov ntshiab isopropanol. Txawm li cas los xij, ua ntej nws tuaj yeem siv rau hauv ntau daim ntawv thov, nws yuav tsum tau ua kom huv ntxiv cov kauj ruam xws li lub cev qhuav dej lossis hydrogenation kom tshem tawm cov impurities seem.

Tag nrho cov txheej txheem los tsim isopropanol los ntawm acetone suav nrog peb kauj ruam tseem ceeb: hydrogenation, sib cais, thiab ua kom huv. Txhua kauj ruam ua lub luag haujlwm tseem ceeb hauv kev ua kom cov khoom kawg ua tau raws li qhov xav tau purity thiab cov qauv zoo.

Tam sim no koj muaj kev nkag siab zoo dua li cas isopropanol yog tsim los ntawm acetone, koj tuaj yeem txaus siab rau qhov sib txawv ntawm cov txheej txheem tshuaj hloov pauv no. Cov txheej txheem yuav tsum muaj kev sib xyaw ua ke ntawm ob qho tib si lub cev thiab tshuaj tiv thaiv kom tshwm sim hauv kev tswj hwm kom tau txais txiaj ntsig zoo isopropanol. Tsis tas li ntawd, kev siv cov catalysts, xws li palladium lossis platinum, plays lub luag haujlwm tseem ceeb hauv kev txhim kho kev ua haujlwm ntawm cov tshuaj tiv thaiv.