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Enhancement of the 1-butanol productivity in the ethanol condensation catalyzed by noble metal nanoparticles supported on Mg-Al mixed oxide
Applied Catalysis A: General ( IF 5.5 ) Pub Date : 2018-06-28 , DOI: 10.1016/j.apcata.2018.06.037
Jorge Quesada , Laura Faba , Eva Díaz , Salvador Ordóñez

The role of the addition of a noble metal (Ru and Pd) on the surface of a basic mixed oxide (MgAl) used as ethanol condensation catalyst is studied in this work. The activity trends for all the reaction steps (dehydrogenation, condensation, dehydration, and hydrogenation) were analyzed, concluding that dehydrogenation step is the rate-determining one under inert conditions whereas hydrogenations also take a relevant role under reducing conditions. Ruthenium has shown very promising 1-butanol productivities at soft conditions (15 times higher than the parent material) whereas palladium performance is limited by the lateral decarbonylation reaction, and its high hydrogenation activity is only determining at temperatures higher than 650 K.



中文翻译:

负载在Mg-Al混合氧化物上的贵金属纳米粒子催化的乙醇缩合反应中1-丁醇生产率的提高

在这项工作中,研究了在用作乙醇缩合催化剂的碱性混合氧化物(MgAl)的表面添加贵金属(Ru和Pd)的作用。分析了所有反应步骤(脱氢,缩合,脱水和氢化)的活性趋势,认为脱氢步骤是在惰性条件下决定反应速率的速率,而氢化在还原条件下也起着重要的作用。钌在柔软的条件下显示出非常有希望的1-丁醇生产率(比母体材料高15倍),而钯的性能则受到侧向脱羰反应的限制,其高氢化活性仅在高于650 K的温度下才能确定。

更新日期:2018-06-28
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