CAJ | 학술논문

利用光学多道分析系统(Optical Multiple Analysis-OMA),采用发射光谱方法,对甲醇气体介质阻挡放电 (dielectric barrier discharge-DBD)分解制氢过程进行了实验研究.通过对甲醇气体DBD放电等离子体荧光光谱的归属,确定了甲醇放电的主要荧光产物为CO、OH、H和CH;另外,还对CO和H_α的荧光辐射强度随放电时间的演变过程进行了实验研究,发现在放电初始阶段,CO和H_α的荧光辐射强度随放电时间急剧增强,表明了DBD放电能有效地分解甲醇气体,并由此对甲醇分解过程进行了分析讨论.在放电等离子体甲醇制氢过程中,最终产物是H_2和CO;H_2主要来自于CH_2O分解以及甲醇分解产生的H原子直接生成;CO主要来源于CH_2O分子分解产生.CH_2O是甲醇分解制氢过程中一个关键的中间产物.
이용광학다도분석계통(Optical Multiple Analysis-OMA),채용발사광보방법,대갑순기체개질조당방전 (dielectric barrier discharge-DBD)분해제경과정진행료실험연구.통과대갑순기체DBD방전등리자체형광광보적귀속,학정료갑순방전적주요형광산물위CO、OH、H화CH;령외,환대CO화H_α적형광복사강도수방전시간적연변과정진행료실험연구,발현재방전초시계단,CO화H_α적형광복사강도수방전시간급극증강,표명료DBD방전능유효지분해갑순기체,병유차대갑순분해과정진행료분석토론.재방전등리자체갑순제경과정중,최종산물시H_2화CO;H_2주요래자우CH_2O분해이급갑순분해산생적H원자직접생성;CO주요래원우CH_2O분자분해산생.CH_2O시갑순분해제경과정중일개관건적중간산물.
The process of methanol decomposition to hydrogen by dielectric barrier discharge (DBD) is experimentally studied using emission spectrum method via Optical Multiple Analysis (OMA) system.CO,OH,H and CH are confirmed as the main fluorescence products according to the assignment of emission spectrum of methanol plasma by DBD discharge.The time evolutions of fluorescence intensity of CO and H_α are also studied.And fluorescence intensities of both particles increase rapidly at the initial stage of discharge,which indicates that DBD discharge can decompose methanol effectively.The paper also analyzes the process of methanol decomposition to hydrogen.H_2 and CO are the final products,and H_2 is mainly produced in CH_2O molecule decomposition and in the reaction between two H atoms from methanol decomposition,while CO is mainly produced in CH_2O molecule decomposition.CH_2O molecule is one key intermediate product in the process of methanol decomposition to hydrogen.