叔丁胺基乙氧基乙醇（TBEE）是一种选择性吸收H2S的新型空间位阻胺类脱硫剂，研究二甘醇（DEG）和叔丁胺（TBA）的直接还原胺化工艺路线制备TBEE具有重要的学术意义和经济价值。本工作制备了一种NixCuy/Al2O3非均相催化剂，对其活性组分与负载比例进行筛选，得到最优的Ni、Cu元素质量比为3∶2。将Ni3Cu2/Al2O3用于催化DEG还原胺化反应，并对该反应的工艺条件进行了优化。结果表明，在200 ℃、催化剂质量为1.0 g、原料胺醇物质的量之比为2∶1、H2压力为1.0 MPa的条件下，DEG在3 h内可以达到77.2%的转化率，TBEE收率可以达到67.2%。最后，对DEG还原胺化反应机理与动力学进行研究，该研究结果为TBEE的工业化生产提供了理论依据。"/>
2-(2-Tert-butylaminoethoxy)ethanol (TBEE) is a new sterically hindered amine desulfurizer that selectively absorbs H2S. Studying on the direct reductive amination process of diethylene glycol (DEG) and tert-butylamine (TBA) to prepare TBEE has important academic significance and economic value. In this work, NixCuy/Al2O3 heterogeneous catalyst was prepared, the active components and loading ratio were screened, resulting in the optimal Ni and Cu element mass ratio was obtained as 3∶2. The Ni3Cu2/Al2O3 was used for the catalytic reduction amination of DEG, and the process conditions for this reaction were optimized. Experimental results showed that under the conditions of 200 ℃, catalyst mass of 1.0g, raw material amine to alcohol molar ratio of 2∶1, and H2 pressure of 1.0 MPa, the DEG conversion reached 77.2% within 3 h, with a TBEE yield of 67.2%. Finally, the study on the mechanisms and kinetics of the reductive amination reaction of DEG was carried out, which provided certain reference significance for the industrialization of TBEE."/>
Study on the Processes and Kinetics of Preparing TBEE Through the Reductive Amination of Diethylene Glycol and Tert-Butylamine
Study on the Processes and Kinetics of Preparing TBEE Through the Reductive Amination of Diethylene Glycol and Tert-Butylamine
LI Danyang1,2, XUE Chen1,2, LIN Hairui1,2, ZHANG Jiahui1,2, CHENG Youwei1,2, REN Lanhui2, WANG Lijun1,2
1. College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310058, China;
2. Institute of Zhejiang University-Quzhou, Quzhou 324000, China
Abstract 2-(2-Tert-butylaminoethoxy)ethanol (TBEE) is a new sterically hindered amine desulfurizer that selectively absorbs H2S. Studying on the direct reductive amination process of diethylene glycol (DEG) and tert-butylamine (TBA) to prepare TBEE has important academic significance and economic value. In this work, NixCuy/Al2O3 heterogeneous catalyst was prepared, the active components and loading ratio were screened, resulting in the optimal Ni and Cu element mass ratio was obtained as 3∶2. The Ni3Cu2/Al2O3 was used for the catalytic reduction amination of DEG, and the process conditions for this reaction were optimized. Experimental results showed that under the conditions of 200 ℃, catalyst mass of 1.0g, raw material amine to alcohol molar ratio of 2∶1, and H2 pressure of 1.0 MPa, the DEG conversion reached 77.2% within 3 h, with a TBEE yield of 67.2%. Finally, the study on the mechanisms and kinetics of the reductive amination reaction of DEG was carried out, which provided certain reference significance for the industrialization of TBEE.
LI Danyang,XUE Chen,LIN Hairui et al. Study on the Processes and Kinetics of Preparing TBEE Through the Reductive Amination of Diethylene Glycol and Tert-Butylamine[J]. Chemical Reaction Engineering and Technology, 2025, 41(6): 656-663.
LI Danyang,XUE Chen,LIN Hairui et al. Study on the Processes and Kinetics of Preparing TBEE Through the Reductive Amination of Diethylene Glycol and Tert-Butylamine[J]. Chemical Reaction Engineering and Technology, 2025, 41(6): 656-663.
