Progress in studies of natural gas conversion in China

Chen, Yu; Shen, Shuling

doi:10.1007/s12182-008-0011-7

Cited by 7 publications

(4 citation statements)

References 31 publications

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“…Such phenomenon occurs when the solution gas is released from oil to form small dispersed, trapped gas bubbles inside the oil which flow with the oil because of the high viscosity of heavy oil. As a result, the oil is expanded and its viscosity is reduced due to gas bubbles (Yu and Shen 2008;Peng et al 2009;Wang et al 2009;Torabi et al 2012). However, when the reservoir pressure is below the pseudo-bubble point pressure, the gasoil ratio of the reservoir increases quickly, and the oil production rate decreases sharply because the gas bubbles trapped in the oil begin to coalesce together to form free gas phase (Liu et al 2011;Sun et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Diffusion coefficients of natural gas in foamy oil systems under high pressures

et al. 2015

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The diffusion coefficient of natural gas in foamy oil is one of the key parameters to evaluate the feasibility of gas injection for enhanced oil recovery in foamy oil reservoirs. In this paper, a PVT cell was used to measure diffusion coefficients of natural gas in Venezuela foamy oil at high pressures, and a new method for determining the diffusion coefficient in the foamy oil was developed on the basis of experimental data. The effects of pressure and the types of the liquid phase on the diffusion coefficient of the natural gas were discussed. The results indicate that the diffusion coefficients of natural gas in foamy oil, saturated oil, and dead oil increase linearly with increasing pressure. The diffusion coefficient of natural gas in the foamy oil at 20 MPa was 2.93 times larger than that at 8.65 MPa. The diffusion coefficient of the natural gas in dead oil was 3.02 and 4.02 times than that of the natural gas in saturated oil and foamy oil when the pressure was 20 MPa. However, the gas content of foamy oil was 16.9 times higher than that of dead oil when the dissolution time and pressure were 20 MPa and 35.22 h, respectively.

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Section: Introductionmentioning

confidence: 99%

Diffusion coefficients of natural gas in foamy oil systems under high pressures

et al. 2015

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“…Methanol synthesis from methane is a promising method that efficiently utilizes natural gas and produces valuable chemicals [5]. However, the conventional method of methanol synthesis involves indirect generation through syngas, which is a complex process requiring high temperature and pressure and results in energy waste [6]. Therefore, researchers have been working to develop a direct methane oxidation method that can synthesize methanol through a new reaction process or catalyst at lower temperatures.…”

Section: Introductionmentioning

confidence: 99%

Effect of the Preparation Method on Cu-MOR/g-C3N4 for Direct Methanol Synthesis from Methane Oxidation by Photothermal Catalysis

et al. 2023

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Copper-based zeolite catalysts are widely used in methanol synthesis from methane oxidation, but their photothermal catalytic properties have seldom been explored. This study examines the effect of the preparation method on Cu-based zeolite composite graphite-phase carbon nitride catalysts (Cu-MOR/g-C3N4) for direct methanol synthesis from methane oxidation by photothermal catalysis. Four different preparation methods are employed: liquid phase ion exchange (Cu-MOR/g-C3N4-IE), isovolumetric impregnation (Cu-MOR/g-C3N4-IM), solid-state ion exchange (Cu-MOR/g-C3N4-GR), and hydrothermal synthesis (Cu-MOR/g-C3N4-HT). Cu-MOR/g-C3N4-IE shows the highest methanol yield (3.09 μmol h−1 gcat−1) due to strong interactions between the CuxOy species and g-C3N4, as well as smaller interfacial charge transfer forces. This study provides a new method for the design and synthesis of catalysts for the conversion of methane.

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“…In recent decades, gradual industrial development and accelerating energy consumption have led to a rapidly dwindling supply of petroleum fuels [1,2]. Hence, the exploration of other sustainable energy resources is urgently required to alleviate this crisis [3,4]. Syngas (a mixture gas of CO and H2) derived from coal, biomass, natural gas or organic waste has attracted wide interest from both academic and industrial application perspectives as it is a large reserve of carbon and hydrogen [5,6].…”

Section: Introductionmentioning

confidence: 99%

Direct conversion of syngas to aromatics: A review of recent studies

Yang

Chen

et al. 2020

Chinese Journal of Catalysis

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The direct catalytic conversion of syngas to aromatics offers a promising route to manufacture fine chemicals by employing non-petroleum carbon resources, because aromatic constituents are the key platform for producing polymers. However, this remains a great challenge due to the low yield of aromatics and poor catalyst stability, which restrict further development. In recent years, extensive research has been reported on the design of effective catalysts and the optimization of operating conditions to obtain better catalytic performance. In this review, we focus on these related achievements and present a comprehensive overview of different kinds of catalysts, mainly including modified Fischer-Tropsch (FT) catalysts and composite catalysts, as well as their performance and reaction mechanisms. The thermodynamic analysis of the reactions involved in this innovative conversion process and the comparison of different methods are also described in detail in this updated review. Finally, the challenges and prospects for direct syngas conversion are discussed to provide general guidelines for the construction of a well-designed reaction route.

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Progress in studies of natural gas conversion in China

Cited by 7 publications

References 31 publications

Diffusion coefficients of natural gas in foamy oil systems under high pressures

Diffusion coefficients of natural gas in foamy oil systems under high pressures

Effect of the Preparation Method on Cu-MOR/g-C3N4 for Direct Methanol Synthesis from Methane Oxidation by Photothermal Catalysis

Direct conversion of syngas to aromatics: A review of recent studies

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