Abstract Hydrodeoxygenation and hydroisomerization of palmitic acid were achieved over bi-functional Co/H-ZSM-22 catalysts (about 4 wt% Co loading), and the maximum of isoproducts reached up to 73.4% selectivity at 260 °C for 4 h in presence of 2 MPa H2. Compared to parent H-ZSM-22, the impregnation of Co species for bi-functional catalysts could catalyze completely palmitic acid conversion into 100% selectivity of alkanes in spite of low pressure (1 MPa H2). Furthermore, bi-functional Co/H-ZSM-22 catalysts tailored the deoxygenation route via hydrodeoxygenation leading to more C16 formation. With decreasing of reaction pressure, mole ratio of C16/C15 decreased during complete conversion of palmitic acid, indicating that low reaction pressure favored hydrodecarbonylation to produce more C15. Bi-functional Co/H-ZSM-22 catalysts also exhibited great stability after five runs without any deactivation.

中文翻译：

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双功能Co/H-ZSM-22催化剂上棕榈酸的加氢脱氧和加氢异构化

摘要 在双功能 Co/H-ZSM-22 催化剂（约 4 wt% Co 负载）上实现了棕榈酸的加氢脱氧和加氢异构化，在 260 °C 下 4 h 的异构产物的最大选择性达到了 73.4% 2 兆帕 H2。与母体 H-ZSM-22 相比，双功能催化剂的 Co 物种浸渍可以催化棕榈酸完全转化为 100% 选择性的烷烃，尽管压力较低（1 MPa H2）。此外，双功能 Co/H-ZSM-22 催化剂通过加氢脱氧调整脱氧路线，导致更多的 C16 形成。随着反应压力的降低，棕榈酸完全转化过程中C16/C15的摩尔比降低，表明低反应压力有利于加氢脱羰产生更多的C15。