TY - JOUR
T1 - MOF-Derived Iron Catalysts for Nonoxidative Propane Dehydrogenation
AU - Sarazen, Michele L.
AU - Jones, Christopher W.
N1 - Funding Information:
We thank Dr. Taylor P. Sulmonetti for many useful discussions and aid in collection XAS data and Dr. Kristina Golub for aid in collection of XRD data. This work was financially supported by the Love Family Professorship at Georgia Institute of Technology. XAS studies were conducted using resources of the Advanced Photon Source, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract no. DE-AC02-06CH11357 with help from Dr. Sungsik Lee (Argonne National Laboratory).
Funding Information:
This work was financially supported by the Love Family Professorship at Georgia Institute of Technology. XAS studies were conducted using resources of the Advanced Photon Source, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract no. DE-AC02-06CH11357 with help from Dr. Sungsik Lee (Argonne National Laboratory).
Publisher Copyright:
© 2018 American Chemical Society.
PY - 2018/12/20
Y1 - 2018/12/20
N2 - The dehydrogenation of light alkanes, sourced from cracking of traditional petrochemical feedstocks and from emerging shale gas, represents an attractive route to alkenes (ethene, propene, and butenes), which are the building blocks for valuable polymers and chemicals. Carbon-supported iron catalysts formed from pyrolysis of Fe-containing metal-organic frameworks (MOFs; Fe-BTC) are investigated here for propane dehydrogenation. The temperature of pyrolysis is found to influence the iron phase (oxide, metal, and carbide) and surface area of the material, but the high-temperature reduction and reaction conditions needed for propane dehydrogenation (500-600 °C) result in a metallic iron phase that is shown to be active and selective for propene formation, though differential isoconversion data indicate that the pyrolysis temperature affects the selectivity to propene. X-ray absorption spectroscopy and X-ray diffraction are utilized to investigate the catalyst state both pre- and post-reduction and reaction. This work demonstrates how using MOFs as precursors may allow the synthesis of useful and perhaps unique catalyst structures that can be designed to obtain desired rates and product selectivities of hydrocarbon processes.
AB - The dehydrogenation of light alkanes, sourced from cracking of traditional petrochemical feedstocks and from emerging shale gas, represents an attractive route to alkenes (ethene, propene, and butenes), which are the building blocks for valuable polymers and chemicals. Carbon-supported iron catalysts formed from pyrolysis of Fe-containing metal-organic frameworks (MOFs; Fe-BTC) are investigated here for propane dehydrogenation. The temperature of pyrolysis is found to influence the iron phase (oxide, metal, and carbide) and surface area of the material, but the high-temperature reduction and reaction conditions needed for propane dehydrogenation (500-600 °C) result in a metallic iron phase that is shown to be active and selective for propene formation, though differential isoconversion data indicate that the pyrolysis temperature affects the selectivity to propene. X-ray absorption spectroscopy and X-ray diffraction are utilized to investigate the catalyst state both pre- and post-reduction and reaction. This work demonstrates how using MOFs as precursors may allow the synthesis of useful and perhaps unique catalyst structures that can be designed to obtain desired rates and product selectivities of hydrocarbon processes.
UR - http://www.scopus.com/inward/record.url?scp=85058507702&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85058507702&partnerID=8YFLogxK
U2 - 10.1021/acs.jpcc.8b08066
DO - 10.1021/acs.jpcc.8b08066
M3 - Article
AN - SCOPUS:85058507702
SN - 1932-7447
VL - 122
SP - 28637
EP - 28644
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
IS - 50
ER -