Cov txheej txheem ntau lawm: 1, neutralization ntawm formic acid thiab hydrated txiv qaub los tsim calcium formate, refined kom tau txais kev lag luam calcium formate.2, compound decomposition ntawm sodium formate thiab calcium nitrate nyob rau hauv lub xub ntiag ntawm catalyst kom tau calcium formate, co-sodium nitrate.
Txoj kev tsim khoom:
1. Neutralization txoj kev
Formic acid yog neutralized nrog hydrated txiv qaub los tsim calcium formate, thiab ua lag luam calcium formate yog tau los ntawm refining.
2. Compound decomposition txoj kev
Nyob rau hauv lub xub ntiag ntawm catalyst, sodium formate thiab calcium nitrate tau ua ob zaug decomposition cov tshuaj tiv thaiv kom tau calcium formate thiab co-ua sodium nitrate. Kev lag luam calcium formate tau los ntawm kev ua kom zoo.
3. Los ntawm txoj kev ntawm epoxy fatty acid methyl ester
Kev tsim cov epoxy fatty acid methyl ester txhim kho sai, thiab ntau ntawm cov khoom los ntawm formic acid yog tsim nyob rau hauv cov txheej txheem ntau lawm. Ib qho ntawm kev siv cov txheej txheem ntawm cov khoom los ntawm formic acid yog tsim cov calcium formate.
4. Kev yug me nyuam
Hauv cov txheej txheem tsim khoom, calcium hydroxide yog siv los muab cov tshuaj tiv thaiv yooj yim, thiab formic acid ntxiv rau cov tshuaj tiv thaiv tom qab thiab calcium hydroxide neutralization txheej txheem tib lub sijhawm los tsim calcium formate.
Formic acid yog carboxylic acid uas tuaj yeem ntxiv rau olefins.Formic acid nyob rau hauv qhov kev txiav txim ntawm cov kua qaub (xws li sulfuric acid, hydrofluoric acid), thiab olefins sai sai reacts rau daim ntawv. Txawm li cas los xij, ib sab cov tshuaj tiv thaiv zoo ib yam li Koch cov tshuaj tiv thaiv kuj tuaj yeem tshwm sim, nrog rau cov khoom lag luam yog ntau dua carboxylic acid.
Pair tus nqi ntawm octanol / dej muab faib coefficient: -, sab sauv tawg txwv % (V / V):, qis tawg txwv % (V / V):.
Formic acid yog ib qho muaj zog txo tus neeg sawv cev thiab cov iav nyiaj iav tuaj yeem tshwm sim. Acid nyob rau hauv saturated fatty acids, dissociation tas li yog×10-4. Nws maj mam tawg mus rau hauv cov pa roj carbon monoxide thiab dej ntawm chav tsev kub. Nws yog rhuab mus rau 60 ~ 80℃nrog concentrated sulfuric acid kom decompose thiab tso carbon monoxide. Thaum formic acid yog rhuab tshaj 160° C, nws decomposes tso carbon dioxide thiab hydrogen. Cov alkali hlau ntsev ntawm formic acid yog rhuab mus rau 400° C los tsim oxalates.
Nws yog siv nyob rau hauv architecture. Tus neeg saib xyuas ceev ceev, lubricant thiab tus neeg saib xyuas lub zog thaum ntxov rau cov cement. Siv nyob rau hauv lub tsev mortar thiab ntau yam pob zeb, ua kom lub hardening ceev ntawm cov cement, txo lub sij hawm teem, tshwj xeeb tshaj yog nyob rau hauv lub caij ntuj no kev tsim kho, kom tsis txhob kub kub qhov chaw ceev yog qeeb heev. Fast demoulding, kom cov cement sai li sai tau los txhim kho lub zog muab tso rau hauv kev siv. Calcium formate siv: txhua yam qhuav mix mortar, txhua yam ntawm cov pob zeb, hnav-resistant cov ntaub ntawv, pem teb kev lag luam, pub kev lag luam, tanning.Calcium formate kev koom tes thiab ceev faj Tus nqi ntawm cov mortar qhuav thiab qhob ib tuj yog li ~%, thiab cov nyiaj ntxiv yog %. Tus nqi ntawm calcium formate maj mam nce nrog qhov txo qis ntawm qhov kub thiab txias, txawm tias qhov nyiaj ntawm 0.3-% yog siv rau lub caij ntuj sov, nws yuav ua rau muaj zog thaum ntxov.
Thaum tshav kub kub, sodium formate tawg rau hauv hydrogen thiab sodium oxalate, uas tom qab ntawd tsim sodium carbonate. Sodium formate tsuas yog siv rau hauv kev tsim cov hmoov pov hwm, oxalic acid thiab formic acid. Hauv kev lag luam tawv, nws yog siv los ua cov kua qaub nyob rau hauv cov txheej txheem chromium tanning, raws li ib tug catalyst thiab stabilizing neeg sawv cev, thiab raws li ib tug txo tus neeg saib xyuas nyob rau hauv lub printing thiab dyeing kev lag luam. Sodium formate tsis muaj teeb meem rau tib neeg lub cev thiab tuaj yeem ua rau lub qhov muag, ua pa thiab tawv nqaij.
Post lub sij hawm: Lub Xya hli ntuj-15-2024