| h-MoO3/SiO2催化合成季戊四醇异辛酸酯 |
| Synthesis of pentaerythritol tetra(2-ethylthylhexoate) catalyzed by h-MoO3/SiO2 |
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| 摘要: 采用固相研磨法，制备了一系列h-MoO3/SiO2催化剂，这些催化剂用于季戊四醇(PER)和异辛酸(i-EHA)反应，合成季戊四醇异辛酸酯(POE)，并采用X射线衍射(XRD)、傅里叶红外光谱(FTIR)、X射线光电子能谱(XPS)、N2吸附-脱附、扫描电镜(SEM)、透射电镜(TEM)对催化剂进行表征测试。结果表明，h-MoO3负载量为15%的(200)晶面择优取向的h-MoO3/SiO2是合成POE的优良催化剂。适宜的反应工艺条件(ni-EHA/nPER=4.3，mh-MoO3/SiO2/mPER=0.003，T=220℃，t=4 h)下，酯化率可达90.83%，POE的选择性可达100%。 |
| 关键词: h-MoO3/SiO2 晶面择优取向 季戊四醇 异辛酸 季戊四醇异辛酸酯 |
| 基金项目: 重庆市教育委员会基于新工科背景的绿色化学教育教学研究项目(No.203335)资助。 |
| Abstract: A series of h-MoO3/SiO2 catalysts for the synthesis of pentaerythritol tetra(2-ethylthylhexoate)(POE) from pentaerythritol (PER) and 2-ethylhexanoic acid (i-EHA) were prepared by solid-phase milling and characterized and tested by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), N2 adsorption-desorption, scanning electron microscope (SEM) and transmission electron microscope (TEM). The results showed that (200) crystalline facet-selectively oriented h-MoO3/SiO2 with h-MoO3 loading of 15% is an excellent catalyst for the synthesis of POE. Under the suitable reaction process conditions (ni-EHA/nPER=4.3, mh-MoO3/SiO2/mPER=0.003，T=220 ℃，t=4 h), the esterification rate was up to 90.83% and the selectivity of POE was up to 100%. |
| Keywords: h-MoO3/SiO2 preferred orientation of crystal plane pentaerythritol 2-ethylhexanoic acid pentaerythritol tetra(2-ethylthylhexoate) |
| 投稿时间：2024-05-17 修订日期：2024-10-01 |
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| 谭益凤,曹平,马楷,李金桐,王雨恒.h-MoO3/SiO2催化合成季戊四醇异辛酸酯[J].无机化学学报,2024,40(11):2155-2162. |
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