Catalytic hydrothermal conversion of dissolved carbon dioxide into methane

Peng Yan, Fangming Jin, Jianglin Cao, Bing Wu, Guangyi Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

This paper aims to convert NaHCO3 (dissolved carbon dioxide in NaOH solution) into methane via hydrothermal catalytic reaction. The effects of various experimental parameters on the conversion efficiency of NaHCO 3, e.g., amount of reactant (Zn) and catalyst (Ni), temperature, reaction time etc, were investigated. The results showed that a maximal 43.6% yield of methane was obtained at the optimal conditions: Zn 0.1mol, Ni 0.06 mol, temperature of 300°C, reaction time of 120min, filling rate of 35% and NaHCO3 0.01mol. In the absence of Ni catalyst, CO2 was mostly converted into formic acid (formic acid yield of 87%) and the corresponding methane yield was zero, while in the presence of Ni, the yield of methane increased to 43.6% and the yield of formic acid was only 3%. Based on these results, it was supposed that Ni played a catalytic role in hydrothermal conversion of CO2 into methane and formic acid was the intermediate product during the formation of methane from CO2 in the hydrothermal processes.

Original languageEnglish
Title of host publication2nd International Symposium on Aqua Science, Water Resource and Low Carbon Energy
Pages242-245
Number of pages4
DOIs
Publication statusPublished - 2010 Dec 1
Event2nd International Symposium on Aqua Science, Water Resource and Low Carbon Energy - Sanya, China
Duration: 2009 Dec 72009 Dec 10

Publication series

NameAIP Conference Proceedings
Volume1251
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other2nd International Symposium on Aqua Science, Water Resource and Low Carbon Energy
CountryChina
CitySanya
Period09/12/709/12/10

Keywords

  • CO2
  • Carbon circulation
  • Hydrothermal conversion
  • Methane
  • Utilization

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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