Hydrogenation and Hydrodeoxygenation of 2-methyl-2-pentenal on supported metal catalysts
Hydrogenation and Hydrodeoxygenation of 2-methyl-2-pentenal on supported metal catalysts
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DOI：
10.1016/j.jcat.2009.05.009
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发表时间：
2009-08
影响因子：
7.3
通讯作者：
T. Pham;L. Lobban;D. Resasco;R. Mallinson
中科院分区：
文献类型：
--
作者：
T. Pham;L. Lobban;D. Resasco;R. Mallinson
研究了沉淀二氧化硅负载的铂、钯和铜催化剂在 200–400°C 温度范围内进行 2-甲基-2-戊烯醛的加氢脱氧和氢化反应。活性遵循 Pt>Pd>Cu 的顺序。研究发现，在低温下，Pt 和 Pd 主要对 CC 键氢化生成 2-甲基戊醛具有活性，并进行一些脱羰反应，生成正戊烷和 CO 作为产物。脱羰作用在较高温度下增加。 Cu 催化 CC 和 CO 键的氢化。在这两种情况下，初始产物在更高的时空下进一步氢化形成2-甲基-戊醇。在铜上较高的温度下，2-甲基戊醇发生氢解，产生 2-甲基戊烷（和 H2O）作为主要产物，同时没有观察到脱羰作用。
Platinum, palladium, and copper catalysts supported on precipitated silica have been studied for the hydrodeoxygenation and hydrogenation of 2-methyl-2-pentenal in the 200–400°C temperature range. The activity follows the order Pt>Pd>Cu. It has been found that at low temperatures, Pt and Pd are primarily active for the hydrogenation of the CC bond to make 2-methyl-pentanal, with some decarbonylation, yielding n-pentane and CO as products. Decarbonylation increases at higher temperatures. Cu catalyzes hydrogenation of both CC and CO bonds. In both cases, the initial products are further hydrogenated to form 2-methyl-pentanol at higher space times. At higher temperatures on Cu, the hydrogenolysis of 2-methyl-pentanol takes place, giving 2-methyl-pentane (and H2O) as the dominant product while no decarbonylation is observed.