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Title: Natural gas reforming of carbon dioxide for syngas over Ni–Ce–Al catalysts

Abstract

A series of Ni–Ce–Al composite oxides with various Ni molar contents were synthesized via the refluxed co-precipitation method and used for natural gas reforming of CO 2 (NGRC) for syngas production. The effect of Ni molar content, reaction temperature, feed gas ratio and gas hourly space velocity (GHSV) on the Ni–Ce–Al catalytic performance was investigated. The Ni 10CeAl catalyst was selected to undergo 30 h stability test and the conversion of CH 4 and CO 2 decreased by 2.8% and 2.6%, respectively. The characterization of the reduced and used Ni10CeAl catalyst was performed using BET, H 2-TPR, in-situ XRD, TEM, and TGA-DTG techniques. The in-situ XRD results revealed that Ce 2O 3, CeO 2 and CeAlO 3 coexisted in the Ni10CeAl catalyst after reduction at 850 °C for 2 h. The results of the TEM analysis revealed that the Ni particle size increased after the NGRC reaction, which mainly caused the catalyst deactivation.

Authors:
; ; ; ; ORCiD logo
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
DOE - BASIC ENERGY SCIENCES
OSTI Identifier:
1406620
Resource Type:
Journal Article
Resource Relation:
Journal Name: International Journal of Hydrogen Energy; Journal Volume: 42; Journal Issue: 29
Country of Publication:
United States
Language:
ENGLISH
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Natural gas; Syngas; Dry reforming of methane; Nickel catalyst; Cerium oxide

Citation Formats

Han, Jun, Zhan, Yiqiu, Street, Jason, To, Filip, and Yu, Fei. Natural gas reforming of carbon dioxide for syngas over Ni–Ce–Al catalysts. United States: N. p., 2017. Web. doi:10.1016/j.ijhydene.2017.04.131.
Han, Jun, Zhan, Yiqiu, Street, Jason, To, Filip, & Yu, Fei. Natural gas reforming of carbon dioxide for syngas over Ni–Ce–Al catalysts. United States. doi:10.1016/j.ijhydene.2017.04.131.
Han, Jun, Zhan, Yiqiu, Street, Jason, To, Filip, and Yu, Fei. 2017. "Natural gas reforming of carbon dioxide for syngas over Ni–Ce–Al catalysts". United States. doi:10.1016/j.ijhydene.2017.04.131.
@article{osti_1406620,
title = {Natural gas reforming of carbon dioxide for syngas over Ni–Ce–Al catalysts},
author = {Han, Jun and Zhan, Yiqiu and Street, Jason and To, Filip and Yu, Fei},
abstractNote = {A series of Ni–Ce–Al composite oxides with various Ni molar contents were synthesized via the refluxed co-precipitation method and used for natural gas reforming of CO2 (NGRC) for syngas production. The effect of Ni molar content, reaction temperature, feed gas ratio and gas hourly space velocity (GHSV) on the Ni–Ce–Al catalytic performance was investigated. The Ni10CeAl catalyst was selected to undergo 30 h stability test and the conversion of CH4 and CO2 decreased by 2.8% and 2.6%, respectively. The characterization of the reduced and used Ni10CeAl catalyst was performed using BET, H2-TPR, in-situ XRD, TEM, and TGA-DTG techniques. The in-situ XRD results revealed that Ce2O3, CeO2 and CeAlO3 coexisted in the Ni10CeAl catalyst after reduction at 850 °C for 2 h. The results of the TEM analysis revealed that the Ni particle size increased after the NGRC reaction, which mainly caused the catalyst deactivation.},
doi = {10.1016/j.ijhydene.2017.04.131},
journal = {International Journal of Hydrogen Energy},
number = 29,
volume = 42,
place = {United States},
year = 2017,
month = 7
}
  • Steam reforming, Co{sub 2} reforming, and simultaneous steam and CO{sub 2} reforming of methane to CO and H{sub 2} over NiO-CaO catalyst (without any prereduction treatment) at different temperatures (700--850 C) and space velocities (5000--70,000 cm{sup 3}/g{center_dot}h) are investigated. The catalyst is characterized by XRD, XPS, and temperature-programmed reduction (TPR). The catalyst showed high activity/selectivity in both the steam and CO{sub 2} reforming reactions and the simultaneous steam and CO{sub 2} reforming. In the CO{sup 2} reforming, the coke deposition on the catalyst is found to be very fast. However, when the CO{sub 2} reforming is carried out simultaneously withmore » the steam reforming, the coke deposition on the catalyst is drastically reduced. By the simultaneous CO{sub 2} and steam reforming (at {ge} 800 C and space velocity of about 20,000--30,000 cm{sup 3}/g{center_dot}h)m methane can be converted almost completely to syngas with 100% selectivity for both CO and H{sub 2}. The H{sub 2}/CO ratio in products can be varied between 1.5 and 2.5 quite conveniently by manipulating the relative concentration of steam and CO{sub 2} in the feed.« less
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