Cov khoom
Tshwj xeeb hauv kev tsim cov cawv propargyl, 1,4 butynediol thiab 3-chloropropyne
Propargyl yuav polymerize thiab tawg
Cov txheej txheem pib yog ua raws li cov cawv cawv propargyl ua hnyav, KOH ua lub hauv paus, cov tshuaj tiv thaiv cua sov kom tau txais lub hom phiaj.Cov tshuaj tiv thaiv tsis muaj kuab tshuaj dilution tej yam kev mob yuav tsawg impurities, cov tshuaj tiv thaiv yog huv si.
Xav txog qhov muaj peev xwm catalytic polymerization thiab explosive decomposition ntawm lub davhlau ya nyob twg alkynes, Amgen's Hazard Evaluation Lab (HEL) tau nqis los ua kev ntsuam xyuas kev nyab xeeb thiab pab hauv kev ua kom zoo dua ua ntej ntsuas txog li 2 litres ntawm cov tshuaj tiv thaiv.
DSC xeem qhia tau hais tias cov tshuaj tiv thaiv pib decompose ntawm 100 ° C thiab tso tawm 3667 J / g zog, thaum propargyl cawv thiab KOH ua ke, txawm tias lub zog poob mus rau 2433 J / g, tab sis lub decomposition kub kuj poob mus rau 85 ° C, thiab cov txheej txheem kub yog ze rau 60 ° C, kev nyab xeeb kev nyab xeeb yog ntau dua.
Yoshida Kho tau siv los xam DSC cov ntaub ntawv, thiab cov txiaj ntsig tau pom tias ob qho tib si propargyl cawv thiab cov tshuaj potassium hydroxide yog impingement rhiab heev thiab tawg.
Kinetic regression siv AKTS yielded TD24 ntawm 73.5 ° C rau ntshiab propargyl cawv thiab 45.9 ° C rau nws 3 M KOH tov.Yog li ntawd, lub system tsis haum rau magnification.
Ntxiv mus, cov tshuaj tiv thaiv cov tshuaj tiv thaiv nrog ARC, ib tug me me tshav kub tso ntawm 46 ° C, adiabatic kub nce ntawm 6 ° C, yuav tsum yog lub hom phiaj cov tshuaj tiv thaiv tshav kub tso tawm.Ntawm 76 ° C, muaj qhov kub thiab txias tso tawm, uas ncaj qha ua rau lub tank ntsuas tawg.Nws yog qhia ntxiv tias cov tshuaj tiv thaiv tsis haum rau amplification.
HEL thiab pab pawg tau txiav txim siab hloov pauv hauv paus, tab sis kev ntsuam xyuas DSC pom tau tias txawm tias lub hauv paus tau txo qis qhov kub ntawm cov dej cawv propargyl.
Kev soj ntsuam kev sim siv cov alkali pom tau tias KOH cov tshuaj tiv thaiv zoo.Kev tshuaj ntsuam xyuas cov kuab tshuaj rov qab tau pom tias dioxane yog cov tshuaj tiv thaiv zoo dua.Kev ntsuam xyuas ARC tau pom tias tom qab cov tshuaj tiv thaiv exothermic ntawm lub hom phiaj cov tshuaj tiv thaiv, qhov kub thiab txias txuas ntxiv mus rau 200 ° C thiab tseem tsis tau pom muaj kev puas tsuaj loj heev.Cov xwm txheej no tuaj yeem ua kom muaj kev nyab xeeb.
