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Updated: May 27, 2025

On-line Analysis of Nitrogen Containing Compounds in Complex Hydrocarbon Matrixes

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Published on: August 5, 2016

在煤炭热解过程中,N₂从具有不同二活性位点的齐克扎格配置中形成的机制

Tingting Jiao^1,2, Pengzheng Shi³, Jieyao Song¹

¹Shanxi Engineering Vocational College, Taiyuan, People's Republic of China.

Environmental technology

|February 16, 2025

概括

密度函数理论研究了煤炭热解过程中的 (N2) 形成. 不同的活性点影响C-N键裂变的能量障碍,影响N2释放机制,并与实验结果保持一致.

科学领域:

化学工程是化学工程的重要组成部分.
材料科学材料科学材料科学
计算化学计算化学

背景情况:

了解煤炭热解过程中的 (N2) 形成对于预测排放和优化燃烧过程至关重要.
控制碳状物质释放N2的微观机制尚不完全理解.
煤炭结构中的化是热分解过程中N2的主要来源.

研究的目的:

为了阐明煤炭热解过程中N2形成的详细微观途径.
为了研究二活性点配置对C-N键裂解的能量障碍的影响.
为了将计算预测与实验结果进行比较,从燃烧模型中对N2脱进行测试.

主要方法:

运用密度函数理论 (DFT) 来建模和计算N2形成机制.
作为代表性碳化物模型,利用了含有酸的七个成员环结构.
计算了C-N键裂变的能量障碍,并分析了反应途径.

主要成果:

不同的二活性位点安排导致不同的电子分布和C-N键裂变的独特能量障碍.
对于不同的模型配置 (例如,R1和R2) 量化了两个原子的顺序裂变的特定能量障碍.
尽管能量障碍存在差异,但整体热解过程 (N原子剥离,环形成,N2脱落) 遵循了一个一致的序列.

结论:

该研究提供了在煤炭热解过程中N2形成途径的详细显微镜理解.
二活性位点的配置显著影响N2释放的动力学,由不同的能量屏障表明.
计算结果,特别是对于二曲折模型的计算结果,与实验观察结果有很好的一致性.

关键词:

煤炭是一种煤炭.N2 N2 N2 N2 N2 N2 N2 N2 N2 N2 N2 活跃的网站活跃的网站密度函数理论密度函数理论热解是一种热解过程.

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