Abstract Sulfides existing in many gas mixtures of high temperature cases have a negative effect on various industrial applications. In this study, we present samarium-doped cerium (SDC) sorbent to remove H2S at high temperature. Compared with pure CeO2, the SDC sorbent shows excellent ability in sulfur removal because of the positive effect of the doping of Sm. The H2 has a negative influence on sulfidation of the SDC sorbent and significantly shortens the breakthrough time, hence breakthrough sulfur capacity (BSC). The carbon monoxide present in the feed gas has no obvious effect on the sulfur-removal performance. A suitable samarium loading in SDC leads to an optimum interaction between metal oxide species and the surface oxygen vacancies, which results in an optimal adsorbed activity of reduced gas (H2, H2S) and hence desulphurization performance. In addition, the SDC sorbents have a good regenerated ability by a simple calcination process.

中文翻译：

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钐掺杂铈吸附剂高温吸硫的新研究

摘要 在高温情况下，许多气体混合物中存在的硫化物对各种工业应用产生负面影响。在这项研究中，我们提出了一种在高温下去除 H2S 的钐掺杂铈 (SDC) 吸附剂。与纯 CeO2 相比，由于 Sm 掺杂的积极作用，SDC 吸附剂显示出优异的脱硫能力。H2 对 SDC 吸附剂的硫化有负面影响，并显着缩短了穿透时间，从而显着缩短了穿透硫容 (BSC)。原料气中存在的一氧化碳对脱硫性能无明显影响。SDC 中合适的钐负载导致金属氧化物物种与表面氧空位之间的最佳相互作用，从而导致还原气体（H2，H2S) 和脱硫性能。此外，SDC 吸附剂通过简单的煅烧过程具有良好的再生能力。