Thermodynamic investigation of methanol and dimethyl ether synthesis from CO2 Hydrogenation

Shen, Wenjie; Jun, Ki‐Won; Choi, Ho‐Suk; Lee, Kyu-Wan

doi:10.1007/bf02707145

Cited by 133 publications

(78 citation statements)

References 11 publications

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“…Al-Dwani [61] showed that methanol production rate increases with the increasing of mole percent in the feed up to the optimum value of carbon dioxide mole percent in the feed of 4.7, at which point methanol production rate reaches a maximum value and after which methanol production rate starts to decrease with the H 2 /CO 2 ratio has the highest effect on the methanol production: it has a negative effect, but in interaction with factor A, in second-order interaction AC, the effect is positive. Then, a simultaneous variation of factors A and C determines the increase of methanol production.…”

Section: Results Of Anova Analysismentioning

confidence: 99%

“…Al-Dwani [61] showed that methanol production rate increases with the increasing of mole percent in the feed up to the optimum value of carbon dioxide mole percent in the feed of 4.7, at which point methanol production rate reaches a maximum value and after which methanol production rate starts to decrease with the increasing of carbon dioxide mole percent in the feed. This behavior can be attributed to fact that the hydrogenation of one mole of CO to methanol needs two moles of H 2 , compared to CO 2 which needs three moles of H 2 to form methanol.…”

Section: Results Of Anova Analysismentioning

confidence: 99%

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Optimization through Response Surface Methodology of a Reactor Producing Methanol by the Hydrogenation of Carbon Dioxide

Leonzio

2017

Processes

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Carbon dioxide conversion and utilization is gaining significant attention worldwide, not only because carbon dioxide has an impact on global climate change, but also because it provides a source for potential fuels and chemicals. Methanol is an important fuel that can be obtained by the hydrogenation of carbon dioxide. In this research, the modeling of a reactor to produce methanol using carbon dioxide and hydrogen is carried out by way of an ANOVA and a central composite design. Reaction temperature, reaction pressure, H 2 /CO 2 ratio, and recycling are the chosen factors, while the methanol production and the reactor volume are the studied responses. Results show that the interaction AC is common between the two responses and allows improvement of the productivity in reducing the volume. A mathematical model for methanol production and reactor volume is obtained with significant factors. A central composite design is used to optimize the process. Results show that a higher productivity is obtained with temperature, CO 2 /H 2 ratio, and recycle factors at higher, lower, and higher levels, respectively. The methanol production is equal to 33,540 kg/h, while the reactor volume is 6 m 3 . Future research should investigate the economic analysis of the process in order to improve productivity with lower costs.

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Section: Results Of Anova Analysismentioning

confidence: 99%

“…Al-Dwani [61] showed that methanol production rate increases with the increasing of mole percent in the feed up to the optimum value of carbon dioxide mole percent in the feed of 4.7, at which point methanol production rate reaches a maximum value and after which methanol production rate starts to decrease with the increasing of carbon dioxide mole percent in the feed. This behavior can be attributed to fact that the hydrogenation of one mole of CO to methanol needs two moles of H 2 , compared to CO 2 which needs three moles of H 2 to form methanol.…”

Section: Results Of Anova Analysismentioning

confidence: 99%

Optimization through Response Surface Methodology of a Reactor Producing Methanol by the Hydrogenation of Carbon Dioxide

Leonzio

2017

Processes

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“…However, the International Energy Agency reported that the majority of the world CO2 emissions arise from post-combustion sources related to electricity and heat production (41 % in 2010), particularly, from coal-fired power plants and the combustion of oil or gas, respectively 43 %, 36 % and 20 % of the electricity related CO2 emissions. Previous works addressed, from the thermodynamic standpoint, the CO2 valorisation into CH4 [15] or CH3OH [16]; in particular, Gao et al [15] studied the effect of species present in syngas produced by coal or biomass gasification, where CO is the major species present (rather than CO2). In this work, however, CO2 valorisation was assessed considering its direct conversion from a real coal-fired power plant exhaust stream.…”

Section: Introductionmentioning

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

119

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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 CO 2 conversion of the both catalysts went up as the temperature increased because appropriately raising the reaction temperature could promote the CO 2 reaction. On the other hand, both the methanol selectivity decreased with the temperature increased because the methanol formation from the hydrogenation of CO 2 is thermodynamically restricted within low conversion under the operating conditions [24]. It can be showed that the CO 2 conversion and the methanol selectivity of 10G-CZA catalyst were always higher than that of the CZA catalyst, confirming that graphene is an excellent promoter for CuO-ZnO-Al 2 O 3 catalysts on CO 2 hydrogenation to methanol.…”

Section: The Performance and Stability Of The Catalystsmentioning

confidence: 91%

Synthesis and Catalytic Performance of Graphene Modified CuO-ZnO-Al2O3forCO

Liu

Tang

et al. 2014

Journal of Nanomaterials

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CuO-ZnO-Al 2 O 3 and graphene nanosheet (GNS) were synthesized by coprecipitation route and reduction of exfoliated graphite oxides method, respectively. GNS modified CuO-ZnO-Al 2 O 3 nanocomposites were synthesized by high energy ball milling method. The structure, morphology, and character of the synthesized materials were studied by BET, XRD, TEM, and H 2 -TPR. It was found that by high energy ball milling method the CuO-ZnO-Al 2 O 3 nanoparticles were uniformly dispersed on GNS surfaces. The catalytic performance for the methanol synthesis from CO 2 hydrogenation was also tested. It was shown experimentally that appropriate incorporation of GNS into the CuO-ZnO-Al 2 O 3 could significantly increase the catalyst activity for methanol synthesis. The 10 wt.% GNS modified CuO-ZnO-Al 2 O 3 catalyst gave a methanol space time yield (STY) of 92.5% higher than that on the CuO-ZnO-Al 2 O 3 catalyst without GNS. The improved catalytic performance was attributed to the excellent promotion of GNS to dispersion of CuO and ZnO particles.

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Thermodynamic investigation of methanol and dimethyl ether synthesis from CO2 Hydrogenation

Cited by 133 publications

References 11 publications

Optimization through Response Surface Methodology of a Reactor Producing Methanol by the Hydrogenation of Carbon Dioxide

Optimization through Response Surface Methodology of a Reactor Producing Methanol by the Hydrogenation of Carbon Dioxide

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

Synthesis and Catalytic Performance of Graphene Modified CuO-ZnO-Al2O3forCO

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