CAJ | 학술논문

以环氧氯丙烷和浓盐酸为原料通过开环反应制备中间产物 1,3-二氯-2-丙醇,将该产物与叔丁胺通过亲核取代反应合成可用于气体脱硫的位阻胺 1,3-二叔丁胺基-2-丙醇(DTBP),并用红外谱图(IR)及核磁共振氢谱(1H NMR)对其进行了结构表征.采用单因素变量法对反应条件进行优化,研究表明,以100%无水乙醇为反应介质,当1,3-二氯-2-丙醇与叔丁胺的摩尔比为1:3,反应温度为140℃,反应时间为3h时,所制得的DTBP产率最高,为92.3%.脱硫性能测试结果表明:在相同的实验条件下,DTBP溶液的H2S脱除率及吸收选择性均优于N-甲基二乙醇胺(MDEA)溶液.
이배양록병완화농염산위원료통과개배반응제비중간산물 1,3-이록-2-병순,장해산물여숙정알통과친핵취대반응합성가용우기체탈류적위조알 1,3-이숙정알기-2-병순(DTBP),병용홍외보도(IR)급핵자공진경보(1H NMR)대기진행료결구표정.채용단인소변량법대반응조건진행우화,연구표명,이100%무수을순위반응개질,당1,3-이록-2-병순여숙정알적마이비위1:3,반응온도위140℃,반응시간위3h시,소제득적DTBP산솔최고,위92.3%.탈류성능측시결과표명:재상동적실험조건하,DTBP용액적H2S탈제솔급흡수선택성균우우N-갑기이을순알(MDEA)용액.
With epoxy chloropropane and concentrated hydrochloric acid as raw material,the intermediate product 1,3-dichloro-2-propanol was prepared by ring opening action. A novel sterically hindered amine 1,3-di-tert-butylamine-2-propanol (DTBP),which can be used for gas desulfurization, has been synthesized by nudeophilic substitution between 1,3-dichloro-2-propanol and tert-butylamine,and then the chemical structure of this desulfurizer was demonstrated by IR and1H NMR. The reaction conditions were optimized by the method of single factor variable,and the study showed that with the 100% anhydrous ethanol as reaction medium,when the molar ratio between 1,3-dichloro-2-propanol andtert-butylamine was 1:3,the reaction temperature was 140℃,and the reacting time was 3 hours,the yield of DBTP was 92.3%,which was the maximum. The laboratory desulfurization performance test indicated that the capacity of H2S absorption and the absorption selectivity of DTBP solution were higher than those of MDEA under the same reaction conditions.