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http://dbpedia.org/ontology/abstract 젤도비치 메커니즘(영어: Zel'dovich mechanism)은 질소의 산젤도비치 메커니즘(영어: Zel'dovich mechanism)은 질소의 산화와 의 형성을 설명하는 화학 반응으로, 러시아 과학자 야코프 보리소비치 젤도비치와 , 그리고 P. Ya. Sadovnikov가 1947년에 제안했다. 반응 메커니즘은 다음과 같다: 이 때, 과 는 아레니우스 방정식의 반응 속도 상수이다. 전체 반응은 다음과 같다: 전체 반응 상수는 첫 번째 반응에 의해 결정된다(즉, 속도 결정 반응이다), 두 번째 반응이 첫 번째 반응보다 훨씬 빠르기 때문에 첫 번째 반응이 일어나자마자 두 번째 반응이 일어난다. 연료가 충분한 상황에서는 산소의 부족으로 인해, 두 번째 반응이 약해져 세 번째 반응이 메커니즘에 추가되며, 이는 확장된 젤도비치 메커니즘(영어: extended Zel'dovich mechanism)이라고도 알려져 있다: 반응의 정반응 속도 상수는 다음과 같이 주어진다: 이 때 의 단위는 cm, mol, s 그리고 K로 측정되며, 온도(켈빈)와 활성화 에너지(cal/mol)로 이루어져 있고, R은 기체 상수이다.빈)와 활성화 에너지(cal/mol)로 이루어져 있고, R은 기체 상수이다. , Zel'dovich mechanism is a chemical mechaniZel'dovich mechanism is a chemical mechanism that describes the oxidation of nitrogen and NOx formation, first proposed by the Russian physicist Yakov Borisovich Zel'dovich in 1946. The reaction mechanisms read as where and are the reaction rate constants in Arrhenius law. The overall global reaction is given by The overall reaction rate is mostly governed by the first reaction (i.e., rate-determining reaction), since the second reaction is much faster than the first reaction and occurs immediately following the first reaction. At fuel-rich conditions, due to lack of oxygen, reaction 2 becomes weak, hence, a third reaction is included in the mechanism, also known as extended Zel'dovich mechanism (with all three reactions), The forward rate constants of the reactions are given by where the pre-exponential factor is measured in units of cm, mol, s and K, temperature in kelvins, and the activation energy in cal/mol; R is the universal gas constant. cal/mol; R is the universal gas constant. , Als Zeldovich-Mechanismus (nach dem sowjetAls Zeldovich-Mechanismus (nach dem sowjetischen Physiker Jakow Borissowitsch Seldowitsch, auch thermischer NO-Mechanismus) bezeichnet man die Oxidation atmosphärischen Stickstoffs. Der erste Schritt der Reaktion benötigt eine Aktivierungsenergie von 315 kJ/mol, die Reaktion findet deshalb nur unter hohen Temperaturen, zum Beispiel in den heißen Bereichen einer Flamme, oder beim Wiedereintritt eines Flugkörpers in die Erdatmosphäre statt. Sie wird deshalb auch zur Analyse von Verbrennungsprozessen verwendet. Die Bildungsrate von NO nimmt bei Temperaturen oberhalb des Bereichs von 1200 °C bis 1400 °C (umgerechnet etwa 1500 bis 1700 Kelvin) exponentiell zu.Dieser Mechanismus wurde später von Lavoie, Heywood und Keck (1970) erweitert: Die Reaktionsgeschwindigkeiten ergeben sich zu wobei T die Temperatur in Kelvin ist.h zu wobei T die Temperatur in Kelvin ist.
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rdfs:comment Zel'dovich mechanism is a chemical mechaniZel'dovich mechanism is a chemical mechanism that describes the oxidation of nitrogen and NOx formation, first proposed by the Russian physicist Yakov Borisovich Zel'dovich in 1946. The reaction mechanisms read as where and are the reaction rate constants in Arrhenius law. The overall global reaction is given by The forward rate constants of the reactions are given by where the pre-exponential factor is measured in units of cm, mol, s and K, temperature in kelvins, and the activation energy in cal/mol; R is the universal gas constant. cal/mol; R is the universal gas constant. , Als Zeldovich-Mechanismus (nach dem sowjetAls Zeldovich-Mechanismus (nach dem sowjetischen Physiker Jakow Borissowitsch Seldowitsch, auch thermischer NO-Mechanismus) bezeichnet man die Oxidation atmosphärischen Stickstoffs. Der erste Schritt der Reaktion benötigt eine Aktivierungsenergie von 315 kJ/mol, die Reaktion findet deshalb nur unter hohen Temperaturen, zum Beispiel in den heißen Bereichen einer Flamme, oder beim Wiedereintritt eines Flugkörpers in die Erdatmosphäre statt. Sie wird deshalb auch zur Analyse von Verbrennungsprozessen verwendet. Die Bildungsrate von NO nimmt bei Temperaturen oberhalb des Bereichs von 1200 °C bis 1400 °C (umgerechnet etwa 1500 bis 1700 Kelvin) exponentiell zu.Dieser Mechanismus wurde später von Lavoie, Heywood und Keck (1970) erweitert:Lavoie, Heywood und Keck (1970) erweitert: , 젤도비치 메커니즘(영어: Zel'dovich mechanism)은 질소의 산젤도비치 메커니즘(영어: Zel'dovich mechanism)은 질소의 산화와 의 형성을 설명하는 화학 반응으로, 러시아 과학자 야코프 보리소비치 젤도비치와 , 그리고 P. Ya. Sadovnikov가 1947년에 제안했다. 반응 메커니즘은 다음과 같다: 이 때, 과 는 아레니우스 방정식의 반응 속도 상수이다. 전체 반응은 다음과 같다: 전체 반응 상수는 첫 번째 반응에 의해 결정된다(즉, 속도 결정 반응이다), 두 번째 반응이 첫 번째 반응보다 훨씬 빠르기 때문에 첫 번째 반응이 일어나자마자 두 번째 반응이 일어난다. 연료가 충분한 상황에서는 산소의 부족으로 인해, 두 번째 반응이 약해져 세 번째 반응이 메커니즘에 추가되며, 이는 확장된 젤도비치 메커니즘(영어: extended Zel'dovich mechanism)이라고도 알려져 있다: 반응의 정반응 속도 상수는 다음과 같이 주어진다: 이 때 의 단위는 cm, mol, s 그리고 K로 측정되며, 온도(켈빈)와 활성화 에너지(cal/mol)로 이루어져 있고, R은 기체 상수이다.빈)와 활성화 에너지(cal/mol)로 이루어져 있고, R은 기체 상수이다.
rdfs:label Zeldovich-Mechanismus , Zeldovich mechanism , 젤도비치 메커니즘
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