CAJ | 학술논문

以四氢硼酸四乙基铵为原料,通过热解反应合成了十氢十硼酸双四乙基铵,并采用红外光谱(IR),核磁共振波谱(1H NMR,11B NMR)及元素分析对其结构进行了表征.采用差热-热重(DSC-TG)分析研究了其在氩气及氧气气氛下的热稳定性,发现其在氩气中仅发生热分解反应,放热量较小,而在氧气中则先分解,再发生氧化反应并放出大量的热.采用Kissinger方法及Coat-redfern方程得到其热分解主反应的动力学方程,并进一步通过热裂解原位池-傅里叶变换红外光谱( FTIR)联用技术和同步热分析-红外-质谱( DSC-TG-FTIR-MS)联用技术研究了其热分解机理,推测在加热升温过程中,化合物在303.2℃下快速分解,气相产物主要为乙烷与少量氨气及氢气,固相产物为单质硼.
이사경붕산사을기안위원료,통과열해반응합성료십경십붕산쌍사을기안,병채용홍외광보(IR),핵자공진파보(1H NMR,11B NMR)급원소분석대기결구진행료표정.채용차열-열중(DSC-TG)분석연구료기재아기급양기기분하적열은정성,발현기재아기중부발생열분해반응,방열량교소,이재양기중칙선분해,재발생양화반응병방출대량적열.채용Kissinger방법급Coat-redfern방정득도기열분해주반응적동역학방정,병진일보통과열렬해원위지-부리협변환홍외광보( FTIR)련용기술화동보열분석-홍외-질보( DSC-TG-FTIR-MS)련용기술연구료기열분해궤리,추측재가열승온과정중,화합물재303.2℃하쾌속분해,기상산물주요위을완여소량안기급경기,고상산물위단질붕.
As a promising burning rate modifier of propellents, the boron hydride salt [(C2H5)4N]2B10H10 was synthesized by the pyrolysis of tetraethylammonium borohydride and characterized by IR, 1 H NMR, 11 B NMR and elementary analysis. The thermal stabilities in Ar or in O2 were investigated by DSC and TG. The results showed that it decomposed with less heat release in Ar. But in O2 , it decomposed at first then was oxided with more heat release. The kinetic equation of thermal decomposition reaction was obtained by Kissin-ger method and Coat-Redfern program. Using combined solid reaction cell in-situ and FTIR, DSC-TG-FTRI-MS simultaneous techniques, thermal decomposition mechanism was supposed, the compound decomposes at 303.2 ℃, and produces C2 H6 , NH3 , H2 and B.