Kusiyana Pakati pa Potaziyamu Hydrooxide ndi Sodium Hydrooxide

Mu gawo la chemistry, onse awiri Potaziyamu hydroxide (KOH) ndi sodium hydroxide (NaOH), yomwe imadziwika kuti caustic potash ndi caustic soda motsatana, imakhala ndi maudindo akuluakulu. Ngakhale amagawana zofanana ngati maziko amphamvu, ali ndi mawonekedwe omwe amawasiyanitsa m'njira zosiyanasiyana. Nkhaniyi ikufuna kupereka chithunzithunzi chokwanira cha kusiyana kwa potaziyamu hydroxide ndi sodium hydroxide.

Zida zamakono ndi zakuthupi

Mapangidwe a Mamolekyu ndi Mapangidwe

Potaziyamu hydroxide imakhala ndi atomu imodzi ya potaziyamu (K), atomu imodzi ya okosijeni (O), ndi atomu imodzi ya haidrojeni (H), yokhala ndi formula yamankhwala KOH. Komano, sodium hydroxide imapangidwa ndi atomu imodzi ya sodium (Na), atomu imodzi ya okosijeni, ndi atomu imodzi ya haidrojeni, yofotokozedwa ngati NaOH. Kusiyana kwa zitsulo zachitsulo (potaziyamu vs. sodium) ndizofunikira ndipo kumathandizira kusiyanasiyana kwawo.

Maonekedwe Athupi ndi Kusungunuka

Mitundu yonse iwiriyi ndi yoyera, yolimba ya hygroscopic kutentha kwa chipinda, yomwe imayamwa mosavuta chinyezi kuchokera mumlengalenga. Komabe, amawonetsa kusiyana kwa kusungunuka. Potaziyamu hydroxide imasungunuka kwambiri m'madzi, kutulutsa kutentha kwakukulu panthawi ya kusungunuka, zomwe zingapangitse kuti yankho likhale lotentha kwambiri. Amasungunukanso mu ethanol ndi methanol. Sodium hydroxide imasungunukanso m'madzi, limodzi ndi zochitika zodziwika bwino za exothermic. Koma poyerekeza, potaziyamu hydroxide nthawi zambiri imakhala ndi kusungunuka kwapamwamba mu zosungunulira zina za organic, zomwe zimapangitsa kukhala chisankho chokondedwa pamakina apadera amankhwala.

Kusungunuka ndi Kuwira

Potaziyamu hydroxide imakhala ndi malo osungunuka pafupifupi 360 °C (680 °F) ndipo amawira pafupifupi 1.324 °C (2.415 °F). Sodium hydroxide, mosiyana, imakhala ndi malo osungunuka okwera pang'ono pafupifupi 318 °C (604 °F) ndipo amawira pa 1.388 °C (2.530 °F). Kusiyana kumeneku kwa malo osungunuka ndi otentha kungakhudze ntchito yawo muzogwiritsira ntchito kutentha kwakukulu, ndipo aliyense amasankhidwa malinga ndi zofunikira za kutentha kwa ndondomeko.

Njira Zokonzekera

Kupanga Kwa mafakitale kwa Potaziyamu Hydrooxide

Mu mafakitale, potaziyamu hydroxide amapangidwa makamaka kudzera mu njira ya electrolysis ya potassium chloride (KCl), njira yotchedwa chloralkali process. Mwanjira iyi, mphamvu yamagetsi imadutsa mu njira ya potaziyamu chloride mu cell electrolytic. Pa anode, ayoni a kloridi amapangidwa ndi okosijeni kuti apange mpweya wa chlorine, pomwe pa cathode, madzi amachepetsedwa, kupanga mpweya wa haidrojeni ndi ayoni a hydroxide. Ma ayoni a potaziyamu amaphatikizana ndi ayoni a hydroxide kupanga potaziyamu hydroxide.

Industrial Kupanga kwa Sodium Hydrooxide

Sodium hydroxide imapangidwanso kudzera mu njira ya chloralkali, koma kugwiritsa ntchito sodium kolorayidi (NaCl) ngati poyambira. Mofanana ndi kupanga potaziyamu hydroxide, electrolysis ya sodium kolorayidi njira kumabweretsa mapangidwe sodium hydroxide pa cathode, pamodzi ndi m'badwo wa chlorine mpweya pa anode ndi mpweya wa haidrojeni pa cathode. Kusiyana kwakukulu pakukonzekera kumakhala muzopangira zomwe zimagwiritsidwa ntchito, ndikupanga potaziyamu hydroxide kudalira potaziyamu - yokhala ndi mchere ndi sodium hydroxide kupanga pa sodium - yomwe ili ndi mchere.

Mapulogalamu

Mu Chemical Manufacturing

Popanga mankhwala, potaziyamu hydroxide imagwiritsidwa ntchito kwambiri popanga mankhwala opangidwa ndi potaziyamu monga phosphate potassium, feteleza wofunikira. Amagwiritsidwanso ntchito popanga ma polima ena komanso ngati chothandizira pazinthu zina za organic. Komano sodium hydroxide ndi chinthu chofunikira kwambiri popanga sopo ndi zotsukira. Kupyolera mu njira yotchedwa saponification, imakhudzidwa ndi mafuta ndi mafuta kuti apange mamolekyu a sopo ndi glycerol. Kuonjezera apo, amagwiritsidwa ntchito popanga mapepala, komwe amathandizira kuphwanya lignin, kulekanitsa ulusi wa cellulose kuti apange mapepala.

Mu Electroplating ndi Metal Processing

Potaziyamu hydroxide imapezeka m'malo osambira a electroplating, makamaka pakuyika zitsulo zina ngati zinki. Kutha kwake kusungunula ma oxides achitsulo ndikusunga malo amchere ndi kopindulitsa pakukwaniritsa zokutira zachitsulo zosalala komanso zofananira. Sodium hydroxide imagwiritsidwa ntchito poyeretsa zitsulo komanso njira zochizira pamwamba. Imatha kuchotsa mafuta, mafuta, ndi dzimbiri pamalo achitsulo, kuwakonzekeretsa kuti apitirize kukonza monga kujambula kapena plating.

Mu Zakudya ndi Zogulitsa Ogula

Potaziyamu hydroxide ili ndi ntchito zochepa koma zenizeni m'makampani azakudya. Mwachitsanzo, angagwiritsidwe ntchito popanga koko kuti asinthe pH, zomwe zimakhudza kukoma ndi mtundu wa chinthu chomaliza. Amagwiritsidwanso ntchito popanga ma pretzels ofewa kuti apange mawonekedwe a chewy. Komano sodium hydroxide imagwiritsidwa ntchito pokonza azitona kuchotsa kuwawa kwawo. Amagwiritsidwanso ntchito popanga zakudya zina - zowonjezera kalasi ndi zolimbitsa thupi.

Chitetezo ndi Kusamalira

Potaziyamu hydroxide ndi sodium hydroxide ndi zinthu zowononga kwambiri. Zitha kuyambitsa mawotchi owopsa pakhungu, maso, ndi njira yopumira akakhudza. Pogwira mankhwalawa, muyenera kuvala zida zoyenera zodzitetezera (PPE) monga magolovesi, magalasi, malaya a labotale. Pankhani yokhudzana ndi khungu kapena maso, kuthamanga msanga komanso nthawi yayitali ndi madzi ambiri ndikofunikira. Komabe, chifukwa cha kusiyana kwa reactivity ndi kusungunuka kwawo, chikhalidwe cha zoopsa zomwe zingatheke zikhoza kusiyana pang'ono. Mwachitsanzo, kusungunuka kwa potaziyamu hydroxide m'zosungunulira zina kumatanthauza kuti imatha kufalikira mwachangu m'malo ena, ndikuwonjezera chiopsezo chamwadzidzi nthawi zina.

Pomaliza, pamene potaziyamu hydroxide ndi sodium hydroxide amagawana chikhalidwe chofanana chokhala maziko amphamvu, kusiyana kwawo kwa mankhwala ndi thupi, njira zokonzekera, kugwiritsa ntchito, ndi kulingalira za chitetezo zimawapangitsa kukhala oyenera pazifukwa zosiyana. Kumvetsetsa kusiyana kumeneku ndikofunikira kwa akatswiri azamankhwala, mainjiniya, ndi ogwira ntchito m'mafakitale kuti agwiritse ntchito mankhwalawa moyenera komanso motetezeka pamagwiritsidwe osiyanasiyana.