This study presents the CO₂ reforming of CH₄ over Ni coated monolith catalyst at 800°C and 101.325 kPa. The high CH₄ to CO₂ ratio employed in this study is similar to the CH₄:CO₂ ratio of >1 found in biogas. Cordierite monolith samples (0.258 channels per m²) washcoated with alumina are used for the experimental purpose. The study considers the combined deactivation effect due to sulphur poisoning and fouling due to carbon deposition. Four different cases with respect to the introduction and removal of H₂S are considered. The rate of deactivation due to simultaneous carbon deposition and sulphur poisoning is much faster than the individual poisoning processes. The catalyst shows almost stable operation for 6 h without the presence of in the feed stream. From the conversion studies, it appears that the pre-treatment of catalyst samples with H₂S leads to negligible sulphur coverage. The sulphur poisoning effect is also found to be reversible.

中文翻译：

---

在 H2S 存在下，在 Ni 涂层整体上 CH4 的 CO2 重整过程中碳和硫导致催化剂失活的实验研究

本研究介绍了在 800°C 和 101.325 kPa 条件下，在 Ni 涂层整体催化剂上CH ₄的 CO ₂重整。本研究中采用的高 CH ₄与 CO ₂比率与沼气中大于 1的 CH ₄ :CO ₂比率相似。实验目的使用涂有氧化铝涂层的堇青石整体样品（每 m ² 0.258 个通道）。该研究考虑了硫中毒和积碳造成的污垢的综合失活效应。_{关于H 2}的引入和去除的四种不同情况考虑 S。由于同时发生碳沉积和硫中毒而导致的失活速度比单独的中毒过程快得多。催化剂在进料流中不存在 6 h 时表现出几乎稳定的操作。_{从转化研究中可以看出，用 H 2} S预处理催化剂样品导致的硫覆盖率可以忽略不计。硫中毒效应也被发现是可逆的。