Higher Acetone Conversion Obtained Over a TiO2-Pd Bifunctional Catalyst for Liquid-Phase Synthesis of Methyl Isobutyl Ketone: The Role of Al2O3 Support

被引：20

作者：

Zhu, Qianling ^{[2
]}

Duan, Hui ^{[1
]}

Lin, Baining ^{[1
]}

Zhu, Yifan ^{[1
]}

Hu, Yingjie ^{[1
]}

Zhou, Yonghua ^{[1
]}

机构：

[1] Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Peoples R China

[2] Cent S Univ, Xiangya Hosp, Ctr Mol Med, Changsha 410005, Hunan, Peoples R China

来源：

CATALYSIS LETTERS | 2019年 / 149卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Acetone; Methyl isobutyl ketone; TiO2; Al2O3; Lewis acid sites; Carbonaceous accumulation; ONE-STEP SYNTHESIS; ONE-POT SYNTHESIS; ALDOL CONDENSATION; ATOMIC LAYER; SBA-15; MIBK; PD; ACETATE; ALUMINA; ACID;

D O I：

10.1007/s10562-019-02861-0

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We reported a bifunctional catalyst TiO2/Al2O3 and Pd/Cor for one-pot liquid-phase synthesis of MIBK from acetone in this paper. The characterizations of FT-IR, Raman spectra, TEM, XPS, CO2-TPD, NH3-TPD, Py-IR and TGA spectra revealed that the TiO2/Al2O3 could possess more acid sites and especially Lewis acid sites due to the coexistence of TiO2 and Al2O3. So a higher acetone conversion 35-45% at 150 degrees C and 2.0MPa pressure was achieved than ever reported for MIBK liquid-phase synthesis. In addition, the catalyst could keep active for at least 90h on stream at 80-90% MIBK selectivity. The phenomenon of carbonaceous accumulation on TiO2/Al2O leaded to the deactivation of catalyst.Graphic AbstractBecause of the coexistence of TiO2 and Al2O3. TiO2/Al2O3 could have more acid sites and especially Lewis acid sites. For liquid-phase synthesis of methyl isobutyl ketone, bifunctional catalyst TiO2/Al2O3&Pd/Cor showed higher acetone conversion. [GRAPHICS]

引用

页码：2636 / 2644

页数：9

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