Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Dry reforming of methane with isotopic gas mixture over Ni-based pyrochlore catalyst

Journal Article · · International Journal of Hydrogen Energy

Dry reforming of methane was carried out using isotopic 13CO2 and C18O2 gases over a Ni-based pyrochlore catalyst that was synthesized using the modified Pechini method. In this method, 1 wt% Ni was doped into the La2Zr2O7 pyrochlore structure. The catalyst was characterized by H2-TPR, TPO, and XRD and tested for its methane reforming activity under CO2 dry-reforming reaction conditions. Here, the results of repeated TPR/TPO cycles up to 950 °C showed that the consecutive TPR profiles were nearly identical, indicating that the catalyst was stable at high temperatures, and that the nickel oxidation/reduction processes were reversible. The dry-reforming experimental results using labelled 13CO2 gas showed the syngas production for this material proceeded through the activation of CH4 with O that came from breaking one of the CO bonds of CO2 with the latter reaction (CO2 activation) likely occurring at oxygen vacancies at or near the Ni particle-pyrochlore interface. It was also found that only a small portion of the CO originated from CH4. A variation of the same experimental test, but using 12C18O2, revealed only 12C18O was formed and no 12C16O was detected, ruling out the possibility of reaction with the lattice oxygen in the catalyst structure with this material. Over this catalyst, the activated CH4 appeared to dissociate to elemental carbon on the catalyst surface, which was determined to be the source of carbon from a post reaction TPO of the catalyst that was exposed to the 13CO212CH4 mixture. No carbon deposition appeared to originate from 13CO2.

Research Organization:
National Energy Technology Lab. (NETL), Morgantown, WV (United States)
Sponsoring Organization:
FE; USDOE
OSTI ID:
1532669
Report Number(s):
NETL-PUB--22117
Journal Information:
International Journal of Hydrogen Energy, Journal Name: International Journal of Hydrogen Energy Journal Issue: 8 Vol. 44; ISSN 0360-3199
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (48)

Catalytic Technology for Carbon Dioxide Reforming of Methane to Synthesis Gas journal October 2009
Progresses in the Preparation of Coke Resistant Ni-based Catalyst for Steam and CO2 Reforming of Methane journal February 2011
Highly Coke-Resistant Ni Nanoparticle Catalysts with Minimal Sintering in Dry Reforming of Methane journal January 2014
Reforming of Methane with Carbon Dioxide to Synthesis Gas over Supported Rhodium Catalysts journal January 1996
Effect of Promotion with Sn on Supported Pt Catalysts for CO2Reforming of CH4 journal August 1998
Carbon and Oxygen Reaction Pathways of CO2 Reforming of Methane over Ni/La2O3 and Ni/Al2O3 Catalysts Studied by Isotopic Tracing Techniques journal October 1999
Intermediate hydrocarbon species for the CO2-CH4 reaction on supported Ni catalysts journal January 1994
Influence of lanthanum carbonate phases of Ni/La0.98Sr0.02O x catalyst over the oxidative transformation of methane journal December 2006
Mechanism of CH4 Dry Reforming on Nanocrystalline Doped Ceria-Zirconia with Supported Pt, Ru, Ni, and Ni–Ru journal May 2013
Role of metal substitution in lanthanum zirconate pyrochlores (La2Zr2O7) for dry (CO2) reforming of methane (DRM) journal September 2012
The location of nickel oxide and nickel in silica-supported catalysts: Two forms of ?NiO? and the assignment of temperature-programmed reduction profiles journal December 1988
The preparation and characterization of the phases formed by the reactions of nickel and lanthanum nitrates with magnesium aluminate journal October 1992
Hydrogen and synthesis gas by steam- and C02 reforming journal January 2002
Effect of pressure on the carbon deposition route in CO2 reforming of 13CH4 journal August 2003
Coke formation and minimisation during steam reforming reactions journal August 1997
A review of catalytic partial oxidation of methane to synthesis gas with emphasis on reaction mechanisms over transition metal catalysts journal August 2008
On the coke deposition in dry reforming of methane at elevated pressures journal September 2015
Impregnated Ni/ZrO2 and Pt/ZrO2 catalysts in dry reforming of methane: Activity tests in excess methane and mechanistic studies with labeled 13CO2 journal September 2015
Nickel based mesoporous silica-ceria-zirconia composite for carbon dioxide reforming of methane journal June 2016
Transient studies of low-temperature dry reforming of methane over Ni-CaO/ZrO2-La2O3 journal January 2013
CH 4 conversion to value added products: Potential, limitations and extensions of a single step heterogeneous catalysis journal December 2016
Catalytic partial oxidation of n-tetradecane using pyrochlores: Effect of Rh and Sr substitution journal July 2008
Syngas production by bireforming of methane over Co-based alumina-supported catalysts journal June 2014
Manganese promoting effects on the Co–Ce–Zr–Ox nano catalysts for methane dry reforming with carbon dioxide to hydrogen and carbon monoxide journal June 2011
Kinetic and mechanistic aspects for CO2 reforming of methane over Ni based catalysts journal October 2015
Catalytic bi-reforming of methane: from greenhouse gases to syngas journal August 2015
Low-temperature catalytic CO2 dry reforming of methane on Ni-based catalysts: A review journal January 2018
The progress in water gas shift and steam reforming hydrogen production technologies – A review journal October 2014
A review of CH4CO2 reforming to synthesis gas over Ni-based catalysts in recent years (2010–2017) journal August 2018
Preparation of SrFeO∼2.85 perovskite using a citric acid assisted Pechini-type method journal August 2005
Kinetic and mechanistic study of dry (CO2) reforming of methane over Rh-substituted La2Zr2O7 pyrochlores journal July 2014
Synthesis and electrical properties of new rare-earth titanium perovskites for SOFC anode applications journal October 2005
Investigation of the quasi-ternary system LaMnO3–LaCoO3–“LaCuO3”—I: the series La(Mn0.5Co0.5)1−xCuxO3−δ journal March 2004
The U.S. shale gas revolution and its effect on international gas markets journal June 2016
Progress in the direct catalytic conversion of methane to fuels and chemicals journal July 2016
Direct Conversion of Methane to Value-Added Chemicals over Heterogeneous Catalysts: Challenges and Prospects journal March 2017
Homogeneous Functionalization of Methane journal March 2017
Dry Reforming of Methane on Rh-Doped Pyrochlore Catalysts: A Steady-State Isotopic Transient Kinetic Study journal May 2016
Steam/CO 2 Reforming of Methane. Carbon Filament Formation by the Boudouard Reaction and Gasification by CO 2 , by H 2 , and by Steam: Kinetic Study journal August 2002
Brief Overview of the Partial Oxidation of Methane to Synthesis Gas journal January 2003
A review of dry (CO 2 ) reforming of methane over noble metal catalysts journal January 2014
An overview on dry reforming of methane: strategies to reduce carbonaceous deactivation of catalysts journal January 2016
Na-promoted Ni/ZrO 2 dry reforming catalyst with high efficiency: details of Na 2 O–ZrO 2 –Ni interaction controlling activity and coke formation journal January 2017
Kinetics, intermediates and mechanism for the CO2-reforming of methane on supported nickel catalysts journal January 1996
Methane-Steam Reforming journal January 1980
Partial Oxidation of Methane journal February 1986
Synthesis and Characterization of LaNiO3, LaNi(1-x)Fe xO3 andLaNi(1-x)Co xO3 Perovskite Oxides for Catalysis Application journal September 2002
Mass spectra of some simple isotopic molecules journal October 1950

Cited By (1)

Promotional Effect of Cr in Sulfated Zirconia‐Based Mo Catalyst for Methane Dehydroaromatization journal August 2019

Similar Records

Differences in the Nature of Active Sites for Methane Dry Reforming and Methane Steam Reforming over Nickel Aluminate Catalysts
Journal Article · Wed Jul 20 00:00:00 EDT 2016 · ACS Catalysis · OSTI ID:1341645

Kinetics of the steam reforming of methane with iron, nickel, and iron-nickel alloys as catalysts
Journal Article · Mon Nov 30 23:00:00 EST 1981 · J. Catal.; (United States) · OSTI ID:5600311

Biogas reforming over Ni catalysts dispersed in different mixed oxides containing Zn2+, Al3+ and Zr4+cations
Journal Article · Fri Jun 15 00:00:00 EDT 2018 · Materials Research Bulletin · OSTI ID:22804012