Conversion of nitrogen dioxide, nitric acid, and n-propyl nitrate to nitric oxide by gold-catalyzed reduction with carbon monoxide
Conversion of nitrogen dioxide, nitric acid, and n-propyl nitrate to nitric oxide by gold-catalyzed reduction with carbon monoxide
复制标题
通过金催化一氧化碳还原将二氧化氮、硝酸和硝酸正丙酯转化为一氧化氮
DOI：
10.1021/ac00262a034
复制
发表时间：
1983
影响因子：
7.4
通讯作者：
F. Fehsenfeld
中科院分区：
文献类型：
--
作者：
M. J. Bollinger;R. Sievers;D. Fahey;F. Fehsenfeld
描述了一种新的技术，用于实时，定量转换的几个XNO/子2/化合物NO，其中X表示一个自由基。该技术利用这些化合物的还原CO在加热的金催化剂产生NO。NO产物检测灵敏的化学发光检测器。该技术被证明在大气压下在合成空气中将NO/sub 2/、HNO/sub 3/和硝酸正丙酯定量转化为NO，混合比在1-120 ppbv范围内。在CO混合比为0.2-1000 ppmv和温度为20-600 ℃的条件下获得了转化结果。Gormley-Kennedy方程用于分析结果与已知扩散系数的一致性。CO还原过程中讨论的净转化反应的热化学和金表面的催化性能。此外，注意到这种技术用于大气测量的潜力。8张图，3张表。
A new technique is described for the real-time, quantitative conversion of several XNO/sub 2/ compounds to NO, where X denotes a radical group. The technique utilizes the reduction of these compounds by CO at heated gold catalyst to yield NO. The NO product was detected by a sensitive chemiluminescence detector. The technique was demonstrated to convert NO/sub 2/, HNO/sub 3/, and n-propyl nitrate quantitatively to NO for mixing ratios in the range of 1-120 ppbv in synthetic air at atmospheric pressure. Conversion results were obtained for CO mixing ratios in the range of 0.2-1000 ppmv and for temperatures in the range of 20-600 /sup 0/C. The Gormley-Kennedy equation was used to analyze the results for consistency with known diffusion coefficients. The CO reduction process is discussed in terms of the thermochemistry of the net conversion reactions and catalytic properties of the gold surface. In addition, the potential of this technique for atmospheric measurements is noted. 8 figures, 3 tables.