Preparation of Highly Dispersed Co/SiO2 Catalyst Using Ethylene Glycol and Its Application in Vapor-Phase Hydrogenolysis of Ethyl Lactate to 1,2-Propanediol

doi:10.3866/PKU.WHXB201603094

GIEC OpenIR > 中国科学院广州能源研究所

	Preparation of Highly Dispersed Co/SiO2 Catalyst Using Ethylene Glycol and Its Application in Vapor-Phase Hydrogenolysis of Ethyl Lactate to 1,2-Propanediol
	Qiu Song-Bai; Weng Yu-Jing; Liu Qi-Ying; Ma Long-Long; Zhang Qi; Wang Tie-Jun
	2016-06-15
发表期刊	ACTA PHYSICO-CHIMICA SINICA
卷号	32 期号:6 页码:1511-1518
摘要	Highly dispersed Co catalysts supported on SiO2 were prepared in the presence of ethylene glycol (EG) by co-impregnation and tested in the vapor-phase hydrogenolysis of ethyl lactate to 1,2-propanediol. The synthesis parameters of Co metal loading, ratio of EG to cobalt nitrate, type of alcohol and calcination temperature, which influenced the physical properties of the Co3O4 nanoparticles, were investigated through the use of X-ray diffraction (XRD). It revealed that the ratio of EG to cobalt nitrate and the type of alcohol significantly affected the particle size of Co3O4 supported on SiO2. During co-impregnation with EG, the interaction between Co2+ and the SiO2 support was strongly enhanced, resulting in the high dispersion of cobalt species and the decrease of Co3O4 particle size from 16 nm to below 5 nm; the significantly enhanced cobalt dispersion was associated with the formation of amorphous cobalt silicate. Meanwhile the conversion of ethyl lactate was greatly improved to 98.6% from 69.5%, with 98.0% selectivity of 1,2-propanediol over 10% (w, mass fraction) Co/SiO2 catalysts under the given reaction conditions (2.5 MPa and 160 degrees C). The obtained catalysts were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), N-2 adsorption-desorption measurements, and H-2 temperature-programmed reduction (H-2-TPR) methods.
文章类型	Article
关键词	Co/sio2 Co-impregnation Ethyl Lactate Hydrogenation Ethylene Glycol 1 2-propanediol
WOS标题词	Science & Technology ; Physical Sciences
DOI	10.3866/PKU.WHXB201603094
研究领域[WOS]	Chemistry
关键词[WOS]	FISCHER-TROPSCH SYNTHESIS ; SUPPORTED-METAL-CATALYSTS ; CO-IMPREGNATION ; BIO-OIL ; HYDROGENATION ; PRETREATMENT ; DEPOSITION
收录类别	SCI
语种	英语
WOS类目	Chemistry, Physical
WOS记录号	WOS:000378824300023
引用统计
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/11775
专题	中国科学院广州能源研究所
作者单位	Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Qiu Song-Bai,Weng Yu-Jing,Liu Qi-Ying,et al. Preparation of Highly Dispersed Co/SiO2 Catalyst Using Ethylene Glycol and Its Application in Vapor-Phase Hydrogenolysis of Ethyl Lactate to 1,2-Propanediol[J]. ACTA PHYSICO-CHIMICA SINICA,2016,32(6):1511-1518.
APA	Qiu Song-Bai,Weng Yu-Jing,Liu Qi-Ying,Ma Long-Long,Zhang Qi,&Wang Tie-Jun.(2016).Preparation of Highly Dispersed Co/SiO2 Catalyst Using Ethylene Glycol and Its Application in Vapor-Phase Hydrogenolysis of Ethyl Lactate to 1,2-Propanediol.ACTA PHYSICO-CHIMICA SINICA,32(6),1511-1518.
MLA	Qiu Song-Bai,et al."Preparation of Highly Dispersed Co/SiO2 Catalyst Using Ethylene Glycol and Its Application in Vapor-Phase Hydrogenolysis of Ethyl Lactate to 1,2-Propanediol".ACTA PHYSICO-CHIMICA SINICA 32.6(2016):1511-1518.