物理化学学报
物理化學學報
물이화학학보
ACTA PHYSICO-CHIMICA SINICA
2008年
2期
197-200
,共4页
Monte Carlo模拟%振荡行为%甲烷部分氧化
Monte Carlo模擬%振盪行為%甲烷部分氧化
Monte Carlo모의%진탕행위%갑완부분양화
Monte Carlo simulation%Oscillatory behavior%Partial oxidation of methane
采用Monte Carlo方法模拟了甲烷催化部分氧化反应过程中的振荡行为.根据Langmuir-Hinshelwood表面反应机理,建立了相应的Monte Carlo模型.结果表明,产物生成速率和表面物种的覆盖度表现出明显的振荡行为,金属催化剂表面的快速氧化和缓慢还原是导致振荡产生的主要原因.
採用Monte Carlo方法模擬瞭甲烷催化部分氧化反應過程中的振盪行為.根據Langmuir-Hinshelwood錶麵反應機理,建立瞭相應的Monte Carlo模型.結果錶明,產物生成速率和錶麵物種的覆蓋度錶現齣明顯的振盪行為,金屬催化劑錶麵的快速氧化和緩慢還原是導緻振盪產生的主要原因.
채용Monte Carlo방법모의료갑완최화부분양화반응과정중적진탕행위.근거Langmuir-Hinshelwood표면반응궤리,건립료상응적Monte Carlo모형.결과표명,산물생성속솔화표면물충적복개도표현출명현적진탕행위,금속최화제표면적쾌속양화화완만환원시도치진탕산생적주요원인.
A simplified Monte Carlo model was proposed to simulate the oscillatory behavior during catalytic partial oxidation of methane. Using the Langmuir-Hinshelwood mechanism, the oscillatory behavior was observed in both reaction rates and coverages of adsorbed species. The influence of oxidation and reduction of the catalyst surface on the oscillations was investigated, and the analysis showed that the fast oxidation and slow reduction of the catalyst surface resulted in the oscillatory behavior.