Conversion of ethanol to 1,3-butadiene over Na doped ZnxZryOz mixed metal oxides

被引:55
|
作者
Baylon, Rebecca A. L. [1 ]
Sun, Junming [1 ]
Wang, Yong [1 ,2 ]
机构
[1] Washington State Univ, Gene & Linda Voiland Sch Chem Engn & Bioengn, Pullman, WA 99164 USA
[2] Pacific NW Natl Lab, Inst Integrated Catalysis, Richland, WA 99352 USA
关键词
Ethanol; 1,3 Butadiene; Zinc oxide; Zirconia; Mixed oxide; Na doped; CATALYTIC CONVERSION; BUTADIENE; MECHANISM; BIOMASS;
D O I
10.1016/j.cattod.2015.04.010
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
Despite numerous studies on different oxide catalysts for the ethanol to 1,3-butadiene reaction, few have identified active sites (i.e., type of acidity) correlated to the catalytic performances. In this work, the type of acidity needed for ethanol to 1,3-butadiene conversion has been studied over Zn/Zr mixed oxide catalysts. Specifically, synthesis method, Zn/Zr ratio, and Na doping have been used to control the surface acid-base properties, as confirmed by characterizations such as NH3-TPD and IR-Py techniques. The 2000 ppm Na doped Zn1Zr10Oz-H with balanced base and weak Bronsted acid sites was found to give not only high selectivity to 1,3-butadiene (47%) at near complete ethanol conversion (97%), but also exhibited a much higher 1,3-butadiene productivity than other mixed oxides studied. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码:446 / 452
页数:7
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