High Pressure Oxidation of Dimethoxymethane
High Pressure Oxidation of Dimethoxymethane
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DOI：
10.1021/acs.energyfuels.5b00459
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发表时间：
2015-05-01
期刊：
影响因子：
5.3
通讯作者：
Alzueta, Maria U.
中科院分区：
文献类型：
--
作者：
Marrodan, Lorena;Royo, Eduardo;Alzueta, Maria U.
从实验和模拟的角度研究了二甲氧基甲烷(DMM)在不同温度(373-1073K)、压力(20-60bar)和空气过剩比(lambda=0.7、1和20)下的氧化反应。用描述DMM氧化的详细气相化学动力学机理对实验结果进行了解释和分析。结果表明，在还原和化学计量条件下，20、40和60bar的DMM氧化过程非常相似。在氧化条件下，可以观察到DMM、CO和CO2浓度随温度变化的平台。这一区域似乎与过氧基中间体CH3OCH2O2有关，它的生成和消耗反应对于描述高压和高氧浓度条件下DMM的转化似乎是重要的。
The oxidation of dimethoxymethane (DMM) has been studied under a wide range of temperatures (373-1073 K), pressures (20-60 bar) and air excess ratios (lambda = 0.7, 1 and 20), from both experimental and modeling points of view. Experimental results have been interpreted and analyzed in terms of a detailed gas-phase chemical kinetic mechanism for describing the DMM oxidation. The results show that the DMM oxidation regime for 20, 40 and 60 bar is very similar for both reducing and stoichiometric conditions. For oxidizing conditions, a plateau in the DMM, CO and CO2 concentration profiles as a function of the temperature can be observed. This zone seems to be associated with the peroxy intermediate, CH3OCH2O2, whose formation and consumption reactions appear to be important for the description of DMM conversion under high pressure and high oxygen concentration conditions.