Investigation on Process Mechanism on Cu-Cr Catalysts for Ethanol Dehydrogenation to Ethyl Acetate

被引：32
|
作者：
Zhang, Minhua [2 ]
Li, Guiming [2 ]
Jiang, Haoxi [1 ,2 ,3 ]
Zhang, Jiyan [2 ]
机构：
[1] Postdoctoral Workstat Sci & Technol Shandong Haih, Weifang 262737, Shandong, Peoples R China
[2] Tianjin Univ, Key Lab Green Chem Technol, Minist Educ, R&D Ctr Petrochem Technol, Tianjin 300072, Peoples R China
[3] Tianjin Univ, Postdoctoral Stn Sci & Technol Chem Engn & Techno, Tianjin 300072, Peoples R China
来源：
CATALYSIS LETTERS | 2011年 / 141卷 / 08期
关键词：
Cu-Cr catalyst; Ethyl acetate; Active site; Acidic site; ZINC OXIDE CATALYSTS; COPPER CHROMITE; METHANOL;
D O I：
10.1007/s10562-011-0635-x
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：
The Cu-Cr catalysts were prepared by co-precipitation method,and the role of active sites on Cu-Cr catalyst for direct synthesis of ethyl acetate from ethanol was investigated. The catalysts were characterized by means of XRD, TEM, XPS, ethanol-TPSR, EA-TPD and FT-IR etc., respectively. The results show that the outermost surface layer of Cu-Cr catalysts after reduction is composed of Cu-0, Cr2O3 and CuCr2O4 phases. The ethanol dehydrogenation step is carried out on Cu-0 active sites, but the selectivity of ethyl acetate is not remarkably influenced by the properties of Cu-0 active sites, the proper performances of Lewis acidic sites on the Cu-Cr catalyst might play a key role to improve the selectivity of ethyl acetate.
引用
收藏
页码：1104 / 1110
页数：7
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