Dataset of methane pyrolysis products in a batch reactor as a function of time at high temperatures and pressures.

Methane pyrolysis is a process used to generate hydrogen gas and carbon black without the creation of carbon dioxide. Methane pyrolysis in a constant volume batch reactor was investigated at temperatures of 892, 1093, and 1292 K with reaction times of 15, 30, 60, 180, and 300 s at an initial pressure of 399 kPa. A quartz vessel (32 mL) was placed inside an oven where it was heated to high temperatures. At the beginning of the process, the quartz vessel was vacuumed, then flushed with nitrogen before being vacuumed again prior to every experiment. Pressurized methane was then injected into the vessel for an allocated reaction time and collected in a sample bag post reaction for analysis. The molar concentration of the product gas was analyzed using gas chromatography. Hydrogen molar concentration increased as temperature and reaction time increased. For experiments completed at 892 K the hydrogen molar concentration varied from 10.0 ± 5.9% with a 15 s reaction time to 26.5 ± 0.8% for a 300 s reaction time. For experiments completed at 1093 K the hydrogen molar concentration varied from 21.8 ± 3.7% for a 15 s reaction time to 53.0 ± 2.9% for a 300 s reaction time. For experiments completed at 1292 K the hydrogen molar concentration varied from 31.5 ± 1.7% for a 15 s reaction time to 53.0 ± 2.4% for a 300 s reaction time.

甲烷热解是一种在不产生二氧化碳的情况下用于产生氢气和炭黑的过程。在初始压力为399 kPa的条件下，在892 K、1093 K和1292 K的温度下，以及15秒、30秒、60秒、180秒和300秒的反应时间下，对定容间歇式反应器中的甲烷热解进行了研究。将一个32 mL的石英容器放置在烘箱内并加热到高温。在该过程开始时，将石英容器抽真空，然后用氮气冲洗，之后在每次实验前再次抽真空。然后将加压的甲烷注入容器中，持续指定的反应时间，并在反应后收集到样品袋中进行分析。使用气相色谱法分析产物气体的摩尔浓度。氢气摩尔浓度随着温度和反应时间的增加而增加。在892 K下完成的实验中，氢气摩尔浓度在反应时间为15秒时为10.0±5.9%，在反应时间为300秒时为26.5±0.8%。在1093 K下完成的实验中，氢气摩尔浓度在反应时间为15秒时为21.8±3.7%，在反应时间为300秒时为53.0±2.9%。在1292 K下完成的实验中，氢气摩尔浓度在反应时间为15秒时为31.5±1.7%，在反应时间为300秒时为53.0±2.4%。