scispace - formally typeset
Search or ask a question
Topic

Substitute natural gas

About: Substitute natural gas is a research topic. Over the lifetime, 1216 publications have been published within this topic receiving 23604 citations. The topic is also known as: synthetic natural gas.


Papers
More filters
Journal ArticleDOI
Jin Hui1, Zhao Xiao1, Guo Liejin1, Zhu Chao1, Cao Changqing1, Wu Zhenqun1 
TL;DR: In order to obtain the optimal operating parameter for methane production, experimental investigations were conducted in the typical operating parameters: reaction temperature 380-520°C, reaction residence time 6-10min with different type of Raney-Ni as discussed by the authors.

52 citations

Book ChapterDOI
TL;DR: Biomass gasification-biosynthesis processing systems have shown promise and the discovery of novel organisms capable of higher product yield, as well as metabolic engineering of existing microbial catalysts, makes this technology a viable option for reducing the authors' dependency on fossil fuels.
Abstract: World energy consumption is expected to increase 44% in the next 20 years. Today, the main sources of energy are oil, coal, and natural gas, all fossil fuels. These fuels are unsustainable and contribute to environmental pollution. Biofuels are a promising source of sustainable energy. Feedstocks for biofuels used today such as grain starch are expensive and compete with food markets. Lignocellulosic biomass is abundant and readily available from a variety of sources, for example, energy crops and agricultural/industrial waste. Conversion of these materials to biofuels by microorganisms through direct hydrolysis and fermentation can be challenging. Alternatively, biomass can be converted to synthesis gas through gasification and transformed to fuels using chemical catalysts. Chemical conversion of synthesis gas components can be expensive and highly susceptible to catalyst poisoning, limiting biofuel yields. However, there are microorganisms that can convert the CO, H(2), and CO(2) in synthesis gas to fuels such as ethanol, butanol, and hydrogen. Biomass gasification-biosynthesis processing systems have shown promise as some companies have already been exploiting capable organisms for commercial purposes. The discovery of novel organisms capable of higher product yield, as well as metabolic engineering of existing microbial catalysts, makes this technology a viable option for reducing our dependency on fossil fuels.

52 citations

Journal ArticleDOI
TL;DR: In this paper, wind and solar energy can be used to produce hydrogen by water electrolysis and subsequently for the synthetic natural gas production via methanation in the power-to-gas process.
Abstract: Fluctuating wind and solar energy can be used to produce hydrogen by water electrolysis and subsequently for the synthetic natural gas production via methanation in the power-to-gas process. This p...

52 citations

Journal ArticleDOI
TL;DR: In this article, the rate and selectivity of CO2 methanation were investigated over a wide range of partial pressures of products and reactants using a gradientless, spinning-basket reactor operated in batch mode and a laboratory-scale packed bed reactor operated continuously.
Abstract: The production of methane by reacting CO2 with H2 (CO2 methanation) has the potential for producing synthetic natural gas, which could be exported using the existing infrastructure for the distribution of natural gas. The methanation of CO2 was investigated over a wide range of partial pressures of products and reactants using (i) a gradientless, spinning-basket reactor operated in batch mode and (ii) a laboratory-scale packed bed reactor operated continuously. The rate and selectivity of CO2 methanation, using a 12 wt% Ni/γ-Al2O3 catalyst, were explored at temperatures 445–497 K and pressures up to 20 bar. Research with the batch reactor showed that the rate increased with increasing partial pressures of H2 and CO2 when the partial pressures of these reactants were low; however, the rate of reaction was found to be insensitive to changes in the partial pressures of H2 and CO2 when their partial pressures were high. A convenient method of determining the effect of H2O on the rate of reaction was also developed using the batch reactor and the inhibitory effect of H2O on CO2 methanation was quantified. The kinetic measurements were compared with a mathematical model of the reactor, in which different kinetic expressions were explored. The kinetics of the reaction were found to be consistent with a mechanism in which adsorbed CO2 dissociated to adsorbed CO and O on the surface of the catalyst with the rate-limiting step being the subsequent dissociation of adsorbed CO. The ability of the kinetic expressions to predict the results from the continuous, packed-bed reactor was explored, with some discrepancies discussed.

52 citations


Network Information
Related Topics (5)
Combustion
172.3K papers, 1.9M citations
77% related
Renewable energy
87.6K papers, 1.6M citations
75% related
Energy storage
65.6K papers, 1.1M citations
71% related
Mesoporous material
43.7K papers, 1.3M citations
71% related
Catalysis
400.9K papers, 8.7M citations
70% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202333
202270
202151
202054
201973
201852