Environmental regulations motivate the industries to replace conventional fuels and chemicals by those produced from biomass. In this regard, hydrodeoxygenation of lignin compounds is of a great deal of attention. Synthesis gas could be utilized instead of pure hydrogen for the cleavage of oxygen‐containing chemical bonds through hydrodeoxygenation. Following this, the utilization of synthesis gas is investigated in the present contribution. A wide range of commercial alumina‐supported catalysts is investigated. The experimental results of cyclohexanone hydrodeoxygenation in the presence of pure hydrogen and synthesis gas at 573 K and 20 bar of total pressure are presented and discussed. The whole investigated catalysts show good activity toward the hydrodeoxygenation of cyclohexanone. Methylatedbenzene derivatives are produced from cyclohexanone hydrodeoxygenation for the first time. The catalysts composed of platinum showed the best performance. By utilizing a chlorinated platinum catalyst, 89.6% cyclohexanone conversion, 100% total hydrocarbon selectivity, and 44.6% total hydrocarbon yield are obtained. In the case of syngas‐assisted hydrodeoxygenation, 80.1% cyclohexanone conversion, 100% total hydrocarbon selectivity, and 29.6% total hydrocarbon yield are obtained by utilizing the same catalyst. The presence of methylated aromatics proves the accomplishment of methanation or direct aromatization reactions in the presence of carbon oxides and hydrogen.

中文翻译：

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利用合成气在氧化铝负载催化剂上进行环己酮脱氧：筛选催化剂

环境法规促使工业界用生物质生产的燃料和化学物质代替常规燃料和化学物质。在这方面，木质素化合物的加氢脱氧引起了极大的关注。可以使用合成气代替纯氢，通过加氢脱氧裂解含氧化学键。此后，在本贡献中研究合成气的利用。研究了广泛的商用氧化铝负载催化剂。介绍并讨论了在纯氢和合成气存在下于573 K和20 bar总压力下进行环己酮加氢脱氧的实验结果。整个研究的催化剂显示出对环己酮加氢脱氧的良好活性。甲基化苯衍生物首次由环己酮加氢脱氧制得。由铂组成的催化剂表现出最好的性能。通过使用氯化铂催化剂，获得了89.6％的环己酮转化率，100％的总烃选择性和44.6％的总烃产率。在合成气辅助加氢脱氧的情况下，使用相同的催化剂可获得80.1％的环己酮转化率，100％的总烃选择性和29.6％的总烃产率。甲基化芳族化合物的存在证明了在碳氧化物和氢存在下甲烷化或直接芳构化反应的完成。获得6％的环己酮转化率，100％的总烃选择性和44.6％的总烃产率。在合成气辅助加氢脱氧的情况下，使用相同的催化剂可获得80.1％的环己酮转化率，100％的总烃选择性和29.6％的总烃产率。甲基化芳族化合物的存在证明了在碳氧化物和氢的存在下甲烷化或直接芳构化反应的完成。获得6％的环己酮转化率，100％的总烃选择性和44.6％的总烃产率。在合成气辅助加氢脱氧的情况下，使用相同的催化剂可获得80.1％的环己酮转化率，100％的总烃选择性和29.6％的总烃产率。甲基化芳族化合物的存在证明了在碳氧化物和氢的存在下甲烷化或直接芳构化反应的完成。