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.
Revised: May 31, 2016 |
Published: January 1, 2016
Citation
Baylon R.A., J. Sun, and Y. Wang. 2016.Conversion of ethanol to 1,3-butadiene over Na doped ZnxZryOz mixed metal oxides.Catalysis Today 259, no. Part 2:446-452.PNNL-SA-115389.doi:10.1016/j.cattod.2015.04.010