I-crystalline calcium formate yokushukwa kwesikhumba

Indlela yokukhiqiza:

1. Indlela yokungathathi hlangothi

I-Formic acid iyasuswa nge-hydrated lime ukuze kukhiqizwe i-calcium formate, futhi i-calcium formate yokuhweba itholakala ngokucwengisiswa.

2. Indlela yokubola eyinhlanganisela

Lapho kukhona i-catalyst, i-sodium formate ne-calcium nitrate zithola ukubola okuphindwe kabili ukuze kutholwe i-calcium formate futhi kuhlanganiswe i-sodium nitrate. I-calcium formate yezentengiselwano itholwe ngokucwengisiswa.

3. Indlela yomkhiqizo we-epoxy fatty acid methyl ester

Ukukhiqizwa kwe-epoxy fatty acid methyl ester kukhula ngokushesha, futhi inani elikhulu le-by-product formic acid likhiqizwa ekukhiqizeni. Enye yezinhlelo zokusebenzisa le-formic acid yomkhiqizo ukukhiqiza i-calcium formate.

4. Indlela yokuzalwa

Enqubweni yokukhiqiza, i-calcium hydroxide isetshenziselwa ukunikeza izimo zokusabela eziyisisekelo, futhi i-formic acid yengezwa ekuphenduleni okulandelayo kanye nenqubo ye-calcium hydroxide neutralization ngesikhathi esifanayo ukukhiqiza i-calcium formate.

I-Formic acid i-carboxylic acid engafakwa kuma-olefin.I-Formic acid esenzweni sama-asidi (njenge-sulfuric acid, i-hydrofluoric acid), nama-olefin asabela ngokushesha ukuze akhe amafomu. Kodwa-ke, ukusabela okuseceleni okufana nokusabela kwe-Koch nakho kungenzeka, ngomkhiqizo ongaphezulu kwe-carboxylic acid.

Ukubhanqa inani le-octanol/i-partition coefficient yamanzi: -, umkhawulo wokuqhuma okuphezulu % (V/V) :, umkhawulo wokuqhuma ophansi % (V/V) :.

I-Formic acid iyi-ejenti yokunciphisa enamandla futhi ukusabela kwesibuko esisiliva kungenzeka. I-Acidic in saturated fatty acids, i-dissociation constant is×10-4. Iqhekeka kancane ibe yi-carbon monoxide namanzi asezingeni lokushisa elijwayelekile. Ishisisiwe ibe ngu-60~80℃nge-concentrated sulfuric acid ukubola nokukhulula i-carbon monoxide. Lapho i-formic acid ishisa ngaphezu kuka-160° C, iyabola ukuze ikhiphe isikhutha ne-hydrogen. Usawoti wensimbi we-alkali we-formic acid ushisiswe ube ngu-400° C ukwakha ama-oxalates.

Isetshenziswa ku-architecture. I-ejenti yokusetha ngokushesha, okokugcoba kanye ne-ejenti yamandla yangaphambi kwesikhathi kasimende. Isetshenziselwa ukwakha udaka kanye nokhonkolo ohlukahlukene, sheshisa ijubane lokuqina likasimende, unciphise isikhathi sokumisa, ikakhulukazi ekwakhiweni kwasebusika, ukugwema izinga lokushisa eliphansi lokusetha ijubane lihamba kancane kakhulu. Fast demoulding, ukuze usimende ngokushesha ngangokunokwenzeka ukuthuthukisa amandla asetshenziswa. Ukusetshenziswa kwe-calcium formate: zonke izinhlobo zodaka lwengxube eyomile, zonke izinhlobo zikakhonkolo, izinto ezingagugi, imboni yaphansi, imboni yokuphakelayo, ukushuka.I-calcium Formate Inani lokubamba iqhaza kanye nezinyathelo zokuphepha Inani lodaka olomile nokhonkolo ngethani licishe libe ngu- ~%, kanti inani elingeziwe ngu-%. Inani le-calcium formate liyakhula kancane kancane ngokuncipha kwezinga lokushisa, ngisho noma inani elingu-0.3-% lisetshenziswa ehlobo, lizodlala umphumela omkhulu wamandla wangaphambi kwesikhathi.

Lapho kushisa, i-sodium formate ihlukana ibe i-hydrogen ne-sodium oxalate, bese yenza i-sodium carbonate. I-sodium formate isetshenziswa kakhulu ekukhiqizeni impushana yomshuwalense, i-oxalic acid ne-fomic acid. Embonini yesikhumba, isetshenziswa njenge-asidi enqubweni yokushuka kwe-chromium, njenge-catalyst kanye ne-ejenti yokwenziwa yokuqina, futhi njenge-ejenti yokunciphisa embonini yokunyathelisa nokudaya. I-sodium formate ayinabungozi emzimbeni womuntu futhi ingacasula amehlo, uhlelo lokuphefumula kanye nesikhumba.