Fatty acid deoxygenation is an important process if we are to realize the use of biocrudes as replacements for fossil fuels. A ZSM-5 support with 40% higher pore volume and increased surface area is realized by assisted synthesis under CH₄. The catalyst exhibits a very good performance for deoxygenation of oleic acid (92% by mole) and selectivities towards aromatics (50.8 wt%) and syngas (14.8 wt%) when loaded with 5% Ce, 0.5% Ga, and 0.5% Pt metal particles. CH₄ is also employed as the coreactant at mild temperature and pressure (400 °C and 30 bar) in a batch system. CH₄ conversion is greatly enhanced over the CH₄-synthesized support and is shown by ¹³CH₄ experiments and ¹³C NMR to directly incorporate into the benzylic sites of the aromatics in the liquid product as well as CO₂ in the gas phase. XPS is used to show that metal species (particularly Ce) are partially reduced prior to reaction, resulting from the ejection of CH₄ pools trapped in the framework during synthesis, removing the need for a potentially expensive and time-consuming pre-reduction step. DSC and TPD studies also show that this material has a significantly higher capacity for methane adsorption, a potential result of methane imprinting from the synthesis process.

中文翻译：

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甲烷辅助催化剂合成及油酸催化转化

如果我们要实现使用生物原油作为化石燃料的替代品，脂肪酸脱氧是一个重要的过程。_{通过在 CH 4}下的辅助合成，实现了孔体积增加 40% 和表面积增加的 ZSM-5 载体。当负载 5% Ce、0.5% Ga 和 0.5% Pt 金属时，该催化剂表现出非常好的油酸脱氧性能（92% 摩尔）和对芳烃（50.8 重量%）和合成气（14.8 重量%）的选择性粒子。CH ₄还用作间歇系统中温和温度和压力（400 °C 和 30 bar）下的共反应剂。_{与 CH 4}合成的载体相比， CH ₄转化率大大提高，并通过^{13 个}CH ₄实验和¹³ C NMR 直接结合到液体产物中芳烃的苄基位点以及气相中的 CO ₂中。XPS 用于显示金属物质（尤其是 Ce）在反应前被部分还原，这是由于合成过程中被困在框架中的 CH ₄池的排出而导致的，因此无需进行可能昂贵且耗时的预还原步骤。DSC 和 TPD 研究还表明，这种材料具有显着更高的甲烷吸附能力，这是合成过程中甲烷印记的潜在结果。