Thermodynamic and experimental study of combined dry and steam reforming of methane on Ru/ ZrO2-La2O3 catalyst at low temperature

The conversion/utilization of waste carbon dioxide is seen as a complementary option to the well-known capture, sequestration and storage strategies (CSS) to substantially reduce atmospheric CO2 (environmental concern). This approach is attractive regarding CCS strategies because CO2 can be transformed into a valuable chemical (economic benefit). Among the options available, methane and methanol are important chemicals that could be obtained from CO2 hydrogenation and used for energy production/storage or as intermediaries to other chemicals.A thermodynamic analysis regarding the hydrogenation of CO2 into CH4 or CH3OH was carried out. The analysis was performed to check the limitations and optimal conditions when converting CO2 from flue gas exhaust streams without previous removal of unnecessary species present in significant amounts (e.g. N2, H2O and O2). The present analysis supports that, from the thermodynamic point of view, the conversion of CO2 into 2 CH4 is favoured in comparison to the CH3OH valorisation strategy, for the considered pressure and temperature ranges.

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“…The total Gibbs free energy of a system is given by the sum of the chemical potential of all the N species [15,19,20]:…”

Section: Methodsmentioning

confidence: 99%

Direct CO2 hydrogenation to methane or methanol from post-combustion exhaust streams – A thermodynamic study

Miguel

Soria

Mendes

et al. 2015

Journal of Natural Gas Science and Engineering

127

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“…The results were obtained for the standard pressure P = 10 5 [Pa], temperature range T (800K, 1200K) and for the initial composition represented by the SC (for steam reforming) or CC (for dry reforming). Numerical calculations were performed using numerical computing environment MATLAB based on the thermodynamic data [12].…”

Section: Calculation Proceduresmentioning

confidence: 99%

“…It can be obtained in the methane conversion process [1,4,5]. The most common method of syngas production is the steam reforming of methane (CH 4 -H 2 O) with use the catalyst, usually a nickel [1,4].…”

mentioning

confidence: 99%

“…Yet at present there can be absorbed other methods gaining more and more popularity the so-called dry reforming of methane involving the use of carbon dioxide (CH 4 -CO 2 ) and the process of mixed reforming with a phase (H 2 O/CO 2 ) being introduced apart from methane [1,5,6]. Reforming process can be schematically represented as follows [1,2,[4][5][6][7][8][9]:…”

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confidence: 99%

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Model Approach of Carbon Deposition Phenomenon in Steam and Dry Methane Reforming Process

Kaczmarczyk¹,

Gurgul²

2014

Archives of Metallurgy and Materials

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This paper presents thermodynamic conditions for carbon deposition in steam and dry methane reforming process. Ranges of substrate concentrations and temperatures for creating carbon deposition were specified in an analytical form. In the description of the conversion of methane CH 4 -H 2 O and CH 4 -CO 2 parametric equations were used, which allowed to define equilibrium composition of the process. The article formulates the basic assumptions of parametric equations models and their use to describe the course of the homogeneous reactions. The results may provide a model basis for the description of properties of the mixed reforming process CH 4 -H 2 O-CO 2 .Keywords: steam and dry reforming of methane, carbon deposition, parametric equations, homogeneous reactions described by model of parametric equations W prezentowanej pracy przedstawiono termodynamiczny warunek wytrącania węgla w procesie parowego i suchego reformingu metanu. Określono zakresy stężenia substratów i temperatury tworzenia depozytów węglowych w postaci analitycznej. Opis konwersji metanu CH 4 -H 2 O i CH 4 -CO 2 zrealizowano z wykorzystaniem formalizmu równań parametrycznych, pozwalającego na określenie składu równowagowego zachodzącego procesu. Przedstawiono podstawowe założenia modelu równań parametrycznych oraz ich wykorzystanie do opisu przebiegu reakcji homogenicznych. Uzyskane wyniki mogą stanowić bazę modelową do opisu własności procesu reformingu mieszanego CH 4 -H 2 O-CO 2 .

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“…The most common method of syngas production which is a raw material for chemical syntheses, a source of pure H 2 and CO is the steam reforming of methane (CH 4 -H 2 O) with use the catalyst, usually a nickel one [1][2][3][4][5]. Also so-called dry reforming of methane with carbon dioxide (CH 4 -CO 2 ) is used.…”

Section: Introductionmentioning

confidence: 99%

Model Approach of Carbon Deposition Phenomenon in Mixed H2O/Co2 Methane Reforming Process/ Modelowanie Zjawiska Wytrącania Węgla W Procesie Reformingu Metanu Fazą Gazową H2O/Co2

Kaczmarczyk¹,

Gurgul²

2014

Archives of Metallurgy and Materials

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This paper presents thermodynamic conditions for carbon deposition in methane reforming process by gas phase H 2 O/CO 2 . Ranges of substrate concentrations and temperatures for creating carbon deposition were specified in an analytical form. In the description of the conversion of methane CH 4 -(H 2 O/CO 2 ) parametric equations were used, which allowed to define equilibrium composition of the process. The article formulates the basic assumptions of parametric equations models and their use to describe the course of the homogeneous reactions. The results may provide a model basis for the description of properties of the mixed reforming process CH 4 -(H 2 O/CO 2 ).Keywords: reforming of methane, carbon deposition, parametric equations, homogeneous reactions described by model of parametric equations W prezentowanej pracy przedstawiono termodynamiczny warunek wytrącania węgla w procesie reformingu metanu fazą gazową H 2 O/CO 2 . Określono zakresy stężenia substratów i temperatury tworzenia depozytów węglowych w postaci analitycznej. Opis konwersji metanu CH 4 -(H 2 O/CO 2 ) zrealizowano z wykorzystaniem formalizmu równań parametrycznych, pozwalającego na określenie składu równowagowego zachodzącego procesu. Przedstawiono podstawowe założenia modelu równań parametrycznych oraz ich wykorzystanie do opisu przebiegu reakcji homogenicznych. Uzyskane wyniki mogą stanowić bazę modelową do opisu własności tzw. procesu reformingu mieszanego CH 4 -(H 2 O/CO 2 ).

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Thermodynamic and experimental study of combined dry and steam reforming of methane on Ru/ ZrO2-La2O3 catalyst at low temperature

Cited by 141 publications

References 41 publications

Direct CO2 hydrogenation to methane or methanol from post-combustion exhaust streams – A thermodynamic study

Direct CO2 hydrogenation to methane or methanol from post-combustion exhaust streams – A thermodynamic study

Model Approach of Carbon Deposition Phenomenon in Steam and Dry Methane Reforming Process

Model Approach of Carbon Deposition Phenomenon in Mixed H2O/Co2 Methane Reforming Process/ Modelowanie Zjawiska Wytrącania Węgla W Procesie Reformingu Metanu Fazą Gazową H2O/Co2

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