TY - JOUR
T1 - Highly selective solid acid catalyst H1-xTi2(PO4)3-x(SO4)x for non-oxidative dehydrogenation of methanol and ethanol
AU - Mitran, Gheorghiţa
AU - Mieritz, Daniel G.
AU - Seo, Dong
N1 - Funding Information:
Daniel G. Mieritz was partly funded by the DOD MURI award W911NF-12-1-0420. We gratefully acknowledge the use of facilities within the LeRoy Eyring Center for Solid State Science at Arizona State University and University of Bucharest for facilities.
Publisher Copyright:
© 2017 by the authors. Licensee MDPI, Basel, Switzerland.
PY - 2017/3/22
Y1 - 2017/3/22
N2 - The conversion of alcohols towards aldehydes in the presence of catalysts by non-oxidative dehydrogenation requires special importance from the perspective of green chemistry. Sodium (Na) super ionic conductor (NASICON)-type hydrogen titanium phosphate sulfate (HTPS; H1-xTi2(PO4)3-x(SO4)x, x = 0.5-1) catalysts were synthesized by the sol-gel method, characterized by N2 gas sorption, X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), NH3 temperature-programmed desorption (NH3-TPD), ultraviolet-visible (UV-VIS) spectroscopy, and their catalytic properties were studied for the non-oxidative dehydrogenation of methanol and ethanol. The ethanol is more reactive than methanol, with the conversion for ethanol exceeding 95% as compared to methanol, where the conversion has a maximum value at 55%. The selectivity to formaldehyde is almost 100% in methanol conversion, while the selectivity to acetaldehyde decreases from 56% to 43% in ethanol conversion, when the reaction temperature is increased from 250 to 400 °C.
AB - The conversion of alcohols towards aldehydes in the presence of catalysts by non-oxidative dehydrogenation requires special importance from the perspective of green chemistry. Sodium (Na) super ionic conductor (NASICON)-type hydrogen titanium phosphate sulfate (HTPS; H1-xTi2(PO4)3-x(SO4)x, x = 0.5-1) catalysts were synthesized by the sol-gel method, characterized by N2 gas sorption, X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), NH3 temperature-programmed desorption (NH3-TPD), ultraviolet-visible (UV-VIS) spectroscopy, and their catalytic properties were studied for the non-oxidative dehydrogenation of methanol and ethanol. The ethanol is more reactive than methanol, with the conversion for ethanol exceeding 95% as compared to methanol, where the conversion has a maximum value at 55%. The selectivity to formaldehyde is almost 100% in methanol conversion, while the selectivity to acetaldehyde decreases from 56% to 43% in ethanol conversion, when the reaction temperature is increased from 250 to 400 °C.
KW - Dehydrogenation
KW - Ethanol
KW - Hydrogen titanium phosphate sulfate
KW - Methanol
UR - http://www.scopus.com/inward/record.url?scp=85016108211&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85016108211&partnerID=8YFLogxK
U2 - 10.3390/catal7030095
DO - 10.3390/catal7030095
M3 - Article
AN - SCOPUS:85016108211
SN - 2073-4344
VL - 7
JO - Catalysts
JF - Catalysts
IS - 3
M1 - 95
ER -