[논문]PdO 나노입자를 이용한 니트라민 폭발물 분해반응에 대한 1H NMR 반응속도연구

Kye, Young-Sik; Kumbier, Mathew; Kim, Dongwook; Harbison, Gerard S.; Langell, Marjorie A.

doi:10.14478/ace.2022.1032

[국내논문] PdO 나노입자를 이용한 니트라민 폭발물 분해반응에 대한 1H NMR 반응속도연구
1H NMR Kinetic Studies for Degradation of Nitramine Explosives Using PdO Nanoparticle 원문보기

공업화학 = Applied chemistry for engineering, v.33 no.3, 2022년, pp.302 - 308

Kye, Young-Sik (육군사관학교 물리화학과) , Kumbier, Mathew (네브래스카대학교 링컨캠퍼스 화학과) , Kim, Dongwook (육군사관학교 물리화학과) , Harbison, Gerard S. (네브래스카대학교 링컨캠퍼스 화학과) , Langell, Marjorie A. (네브래스카대학교 링컨캠퍼스 화학과)

초록
AI-Helper

사격장 피탄지에 잔류되는 고폭화약으로 인한 환경오염 문제를 해결하기 위해 표면적이 큰 나노입자를 사용한 분해반응을 연구하였다. 수질오염을 가상하여 물에 용해시킨 research department explosive (RDX)와 high melting explosive(HMX) 니트라민 폭발물에 PdO를 첨가하여 313 K에서 분해반응시켰다. 폭발물의 분해반응속도를 측정하기 위해 반응 초기부터 종료시까지 시료 손실없이 반응속도를 측정할 수 있고 스펙트럼을 통하여 반응의 진행 정도를 관찰 가능한 ¹H NMR을 사용하였다. NMR 피크의 chemical shift 및 peak intensity 분석으로 유사 1차 분해반응이 일어남을 확인하였으며, 측정된 RDX와 HMX의 분해반응 속도상수는 각각 2.10 × 10^-2과 6.35 × 10^-4 h^-1이었다. 본 연구로부터 산화금속 PdO 나노입자는 니트라민 폭발물 분해반응연구에 적용 가능함을 확인하였다.

Abstract ▼ AI-Helper

The PdO nanoparticle with large surface area was selected to solve the environmental pollution problem at fire range caused by high energy explosives research department explosive (RDX) and high melting explosive (HMX). By simulating water pollution, RDX and HMX nitramine explosives were dissolved in water, followed by the degradation reaction at 313 K by adding PdO. In order to measure the degradation reaction rate of explosives, 1H NMR was used, which can monitor the reaction rate without losing sample during reaction, and observe the progress of the reaction through the spectrum. The results showed that the degradation of RDX and HMX by PdO nanoparticles are pseudo-first order reaction. The degradation of explosives compounds were observed via the chemical shift and peak intensity analysis of NMR peaks. The measured rate constants for these reactions of RDX and HMX were 2.10 × 10-2 and 6.35 × 10-4 h-1, respectively. This study showed that the application of PdO nanoparticles for explosives degradation is a feasible option.

주제어

표/그림 (7)

그림 Figure 1. Sample preparation in NMR tube.
그림 Figure 2. ¹H NMR spectra of TNT using (a) without water suppression and (b) with water suppression pulse sequence.
그림 Figure 3. ¹H NMR spectra of RDX degradation reacted with PdO at 40 °C.
그림 Figure 4. RDX degradation graph of (a) relative NMR peak intensities vs. Time (Day), and (b) regression analysis.
그림 Figure 5. Number of hydrogens on ¹H NMR spectra according to RDX degradation using PdO at 40 °C(Initial 1 hydrogen intensity on y axis comes from 6 hydrogen of 1 RDX molecule).
그림 Figure 6. ¹H NMR spectra of HMX degradation reacted with PdO at 40 °C.
표 Table 1. Degradation Rate Constants of RDX and HMX

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