Multifunctional WO3-ZrO2-Supported Platinum Catalyst for Remarkably Efficient Hydrogenolysis of Esters to Alkanes
Multifunctional WO3-ZrO2-Supported Platinum Catalyst for Remarkably Efficient Hydrogenolysis of Esters to Alkanes
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DOI：
10.1021/jacs.2c11145
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发表时间：
2023-01-19
影响因子：
15
通讯作者：
Nozaki, Kyoko
中科院分区：
文献类型：
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作者：
Yuan, Kang;Yamazaki, Yukari;Nozaki, Kyoko
酯氢解为烷烃是从可再生植物油或脂肪合成高质量碳氢化合物燃料的关键方案。然而，在温和的节能条件下执行此过程具有挑战性。在此，我们报告了一种强大的钨和氧化锆负载的铂催化剂（Pt/WO3-ZrO2），用于在低温（低至 70 摄氏度）和环境压力（1 atm）氢气下将酯氢解为烷烃。例如，三硬脂精在 130 摄氏度下完全转化，对相应烷烃的选择性超过 95%，且没有碳损失。此外，本文报道的催化剂体系的非均相性质允许催化剂多次重复使用，而不会显着损失其高活性和选择性。机理研究表明，WO3-ZrO2 载体的多功能性质（酸性和氧化还原性质）对于催化剂的高活性起着重要作用。
The hydrogenolysis of esters to alkanes is a key protocol for the synthesis of high-quality hydrocarbon fuels from renewable plant oils or fats. However, performing this process under mild energy-efficient conditions is challenging. Herein, we report a robust tungsten-and zirconium-oxide-supported platinum catalyst (Pt/WO3-ZrO2) for the hydro-genolysis of esters to alkanes at low temperatures (as low as 70 degrees C) and under ambient pressure (1 atm) of H2. For example, tristearin undergoes a complete conversion at 130 degrees C with more than 95% selectivity for the corresponding alkanes without carbon loss. In addition, the heterogeneous nature of the catalyst system reported herein permits multiple reuse of the catalyst without any significant loss of its high activity and selectivity. Mechanistic studies suggest that the multifunctional nature (acid and redox properties) of the WO3-ZrO2 support plays an important role in the high activity of the catalyst.