Effect of pressure on the efficiency of nickel and nickel-copper catalysts in decomposition of methane

Kuvshinov, G. G.; Popov, M. V.; Tonkodubov, S. E.; Kuvshinov, D. G.

Abstract

Methane decomposition into hydrogen and nanofibrous carbon in the presence of high-percentage catalysts (70–90)% Ni–(0–20)% Cu–10% Al at a temperature of 948 K and pressures of 1 to 5 atm was studied in order to develop a technology for enrichment of natural gas with hydrogen. It was found that, With an increasing copper content in the catalyst and and with increasing pressure, the average, methane decomposition rate decreases by 10–20% and the catalyst lifetime and the specific yield of hydrogen (mol/molNi+Cu) become (3.8–12) times higher over the catalyst deactivation period. The mechanisms by which the pressure and the copper content of the catalyst affect these process characteristics are discussed.

Citation

Kuvshinov, G. G., Popov, M. V., Tonkodubov, S. E., & Kuvshinov, D. G. (2016). Effect of pressure on the efficiency of nickel and nickel-copper catalysts in decomposition of methane. Russian Journal of Applied Chemistry / Zhurnal Prikladnoi Khimii, 89(11), 1777-1785. https://doi.org/10.1134/S1070427216110070

• Journal Article Type: Article
• Acceptance Date: Sep 9, 2016
• Online Publication Date: Feb 24, 2017
• Publication Date: 2016-11
• Deposit Date: May 7, 2019
• Journal: Russian Journal of Applied Chemistry
• Print ISSN: 1070-4272
• Electronic ISSN: 1608-3296
• Publisher: MAIK Nauka/Interperiodica
• Peer Reviewed: Peer Reviewed
• Volume: 89
• Issue: 11
• Pages: 1777-1785
• DOI: https://doi.org/10.1134/S1070427216110070
• Public URL: https://hull-repository.worktribe.com/output/1738694
• Publisher URL: https://link.springer.com/article/10.1134%2FS1070427216110070