Mechanistic investigations on a homogeneous ruthenium Guerbet catalyst in a flow reactor
Mechanistic investigations on a homogeneous ruthenium Guerbet catalyst in a flow reactor
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连续反应器中均相钌格尔伯特催化剂的机理研究
DOI：
10.1039/d1re00551k
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发表时间：
2022
影响因子：
3.9
通讯作者：
Guironnet, Damien
中科院分区：
文献类型：
--
作者：
Wang, Nicholas M.;Dillon, Sam;Guironnet, Damien
使用专门设计的连续搅拌釜反应器（CSTR）对双（吡啶亚氨基）异吲哚钌（II）催化剂催化的乙醇自缩合反应（格尔伯特反应）进行了机理研究。利用气液平衡，通过将均相催化剂溶解在非挥发性溶剂中，同时连续加入挥发性底物，使均相催化剂在反应器中保持恒定浓度。通过使用在线气相色谱仪分析离开反应器的蒸气（试剂和产物）来监测催化剂的活性。 C6 产物的形成证明了催化剂对丁醇的反应活性，并且仅检测到饱和产物意味着在反应条件下氢化是快速的。这些观察结果促使我们对氢化步骤进行了详细研究，为氢转移途径提供了证据。建立了格尔伯特反应相应的反应机理。
A mechanistic investigation on the ethanol self-condensation reaction (Guerbet reaction) catalyzed by a bis(pyridylimino)isoindolate Ru(II) catalyst was performed using a specifically designed continuously-stirred tank reactor (CSTR). Leveraging vapor–liquid equilibrium, the homogeneous catalyst was maintained in the reactor at a constant concentration by dissolving it in a non-volatile solvent while volatile substrates were fed continuously. The activity of the catalyst was monitored by analyzing the vapor exiting the reactor (reagents and products) using an in-line gas chromatograph. The formation of C6 products demonstrates the catalyst's reactivity towards butanol, and the detection of solely saturated products implies that hydrogenation is fast under the reaction conditions. These observations led us to perform a detailed study of the hydrogenation step that provided evidence for a hydrogen-transfer pathway. The corresponding reaction mechanism for the Guerbet reaction was established.
盐在乙二醇及其与水的混合物中的溶解度
DOI：
--
发表时间：
1931
期刊：
影响因子：
--
作者：
H. M. Trimble
通讯作者：
H. M. Trimble
传统烷烃溶剂的替代品。
影响因子：
15
作者：
M. L. Harrell;T. Malinski;Coralys Torres;Kimberly Gonzalez;Jakkrit Suriboot;D. Bergbreiter
通讯作者：
D. Bergbreiter