Methane decomposition for hydrogen production is classified as blue turquoise, an intermediate between green and blue hydrogen. It does not generate greenhouse gas (GHG) emissions and does not require installation of carbon capture, utilization, and storage (CCUS) processes, becoming environmentally competitive among technologies, as the only byproduct is solid carbon. This research contributes to optimize temperature and gas hourly space velocity parameters for methane conversion adopting design of experiment (DoE) concept to collect data and identify significant factors through a 3 factorial design. Highest methane conversion, considering thermodynamic equilibrium limit of reaction, was obtained at 900 K and 6000 mL.h.g. The catalyst used was characterized by SEM, BET, and XRD.

中文翻译：

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美国能源部驱动的甲烷分解无 COX 制氢热力学评估

甲烷分解产生氢气被归类为蓝绿松石，是绿氢和蓝氢之间的中间体。它不产生温室气体（GHG）排放，也不需要安装碳捕获、利用和储存（CCUS）过程，在技术中具有环境竞争力，因为唯一的副产品是固体碳。这项研究有助于优化甲烷转化的温度和气时空速参数，采用实验设计（DoE）概念来收集数据并通过三因子设计识别重要因素。考虑到反应的热力学平衡极限，在 900 K 和 6000 mL.hg 下获得了最高的甲烷转化率。所用催化剂通过 SEM、BET 和 XRD 进行了表征。