Activation of a nickel-chromium catalyst for low-temperature steam reforming of C2+-alkanes

• Published in: Catalysis today Vol. 378; pp. 106 - 112
• Main Authors: Uskov, S.I., Potemkin, D.I., Pakharukova, V.P., Belyaev, V.D., Snytnikov, P.V., Kirillov, V.A., Sobyanin, V.A.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15.10.2021
• Subjects: Catalyst activation; Catalyst passivation; Flare gas; Nickel-chromium catalyst; NiO reduction; Steam reforming; Catalyst activation; Steam reforming; Catalyst passivation; Nickel-chromium catalyst; NiO reduction; Flare gas
• ISSN: 0920-5861; 1873-4308
• DOI: 10.1016/j.cattod.2020.11.014

[Display omitted] •XRD study on activation of an industrial Ni-Cr-Al catalyst.•Reduction of NiO by H2, syngas, methanol and reaction mixture.•Nickel catalyst passivation and reactivation.•Steam reforming of C2+-hydrocarbons into CH4, CO2 and H2. Activation of a nickel-chromium catalyst for low temperature steam reforming of C2+-alkanes to methane rich gas has been studied by TPR and XRD in situ techniques. The activation procedure has been studied with the following reducing agents: hydrogen, syngas, methanol and the reaction mixture of low-temperature steam reforming. Attempts were made to activate the catalyst at 300, 340 and 420 °C. Activated samples were tested in low-temperature steam reforming of a methane-propane mixture. A passivation process has been proposed and tested for compatibility with following activation in the LTSR reaction mixture.