CAJ | 학술논문

用3一硝基邻苯二甲酸、氢氧化钠和硝酸氧锆为原料,制备了3.硝基邻苯二甲酸锫,采用元素分析、X射线荧光衍射和FT-IR对其结构进行了表征.用TG-DTG以及变温固相原位反应池/傅里叶变换红外光谱(RSFT-m)联用技术研究了3-硝基邻苯二甲酸锆的热分解机理,对主分解反应的DTG峰进行了数学处理,计算得到了动力学参数和动力学方程.结果表明,3.硝基邻苯二甲酸锆的分解反应总共有4个阶段,其中主分解反应发生在第2阶段,主分解反应的表观活化能Ea与指前因子A分别为158.84 kJ·mol-1和109.85S-1,主分解阶段的反应机理服从一级Mample法则,主分解反应的动力学方程为doddt=109.85(1-α)e-1.91×104/T.
용3일초기린분이갑산、경양화납화초산양고위원료,제비료3.초기린분이갑산부,채용원소분석、X사선형광연사화FT-IR대기결구진행료표정.용TG-DTG이급변온고상원위반응지/부리협변환홍외광보(RSFT-m)련용기술연구료3-초기린분이갑산고적열분해궤리,대주분해반응적DTG봉진행료수학처리,계산득도료동역학삼수화동역학방정.결과표명,3.초기린분이갑산고적분해반응총공유4개계단,기중주분해반응발생재제2계단,주분해반응적표관활화능Ea여지전인자A분별위158.84 kJ·mol-1화109.85S-1,주분해계단적반응궤리복종일급Mample법칙,주분해반응적동역학방정위doddt=109.85(1-α)e-1.91×104/T.
Zirconium 3-nitrophthalate (Zr(3-NO2-PHT)2·2H20) was synthesized using 3-nitrophthalic acid, sodium hydroxide, and zirconyl nitrate as raw materials. Its structure was determined by elemental analysis, X-ray fluorescence and FF-IR spectra. The thermal decomposition mechanism and kinetic parameters of the decomposition reaction for Zr(3-NO2-PHT)2·2H2O were investigated by temperature-programmed TG-DTG and condensed-phase thermolysis/Fr-IR techniques. A kinetic equation for the decomposition reaction was obtained. The results showed that Zr(3-NO2-PHT)2·2H2O underwent a four-stage decomposition process and that the main decomposition reaction occurred during the second process. The apparent activation energy (Ea) and pre-exponential factor (A) of the main decomposition reaction are 158.84 kJ·mol-1 and 109.85 S-1, respectively. The kinetic equation can thus be expressed as: doddt=109.85(1-α)e-1.91×104.