Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 200, Issue -, Pages 458-468Publisher
ELSEVIER
DOI: 10.1016/j.apcatb.2016.07.010
Keywords
Lanthana; Alumina; Ethanol dehydration; Acidity; Basicity
Funding
- University of Genova
- DOE/BES [DE-FG02-05ER15730]
Ask authors/readers for more resources
Lanthana on alumina samples (0.2, 0.8 and 4.7 theoretical monolayers) were prepared by incipient wetness impregnation using gamma-Al2O3 as support. Characterization has been performed by BET, XRD, skeletal FT-IR, DR-UVvis, XPS, HR-TEM, IR spectra of the surface OH, adsorbed pyridine and CO2, and isopropanol TPD. Ethanol conversion was investigated both in temperature-programmed surface reaction (TPSR) dynamic conditions as well as in steady-state flow reactor tests. Lanthanum addition stabilizes alumina with respect to sintering and loss of surface area and La containing phases are observed only for the high-La loaded catalyst. La- alumina catalysts are less active in ethanol dehydration than alumina but more selective to diethyl ether at partial conversion. 5%La2O3/Al2O3 is also equally or more selective than alumina to ethylene at high conversion, producing less carbonaceous material during reaction. Thus, this catalytic system might be a good candidate for (bio)ethylene production through (bio)ethanol dehydration. (C) 2016 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available