CO2 Hydrogenation to Methanol at Atmospheric Pressure: Influence of the Preparation Method of Pd/ZnO Catalysts

Díez-Ramírez, J.; Valverde, J.L.; Sánchez, Paula; Dorado, Fernando

doi:10.1007/s10562-015-1627-z

Cited by 57 publications

(54 citation statements)

References 20 publications

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“…Finally, the performance of the Pd 2 Ga/SiO 2 catalyst was compared with the reported literature (Table ) on low‐pressure methanol synthesis from CO 2 hydrogenation. The rate of methanol formation over Pd 2 Ga/SiO 2 catalyst is higher than that reported for most of the catalysts at atmospheric pressure . Table shows that the intermetallic Pd–Ga is more active and selective than Pd/ZnO, 37.5 PdCuZn/SiC, and Cu/ZnO catalyst.…”

Section: Catalyst Activity Testingmentioning

confidence: 73%

“…The rate of methanol formation over Pd 2 Ga/SiO 2 catalyst is higher than that reported for most of the catalysts at atmospheric pressure. 12,[35][36][37][38] Table 2 shows that the intermetallic Pd-Ga is more active and selective than Pd/ZnO, 37.5 PdCuZn/SiC, and Cu/ZnO catalyst. The Pd 2 Ga catalyst possesses a higher density of active sites than many bimetallic-and trimetallic-promoted Cu catalysts.…”

Section: Effect Of Pressurementioning

confidence: 99%

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Influence of reduction temperature on the formation of intermetallic Pd₂Ga phase and its catalytic activity in CO₂ hydrogenation to methanol

Ahmad

Upadhyayula

2019

Greenhouse Gases

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The global warming and change in climatic conditions due to rising concentration of CO2 in atmosphere are the most important challenges of 21st century. Catalytic conversion of CO2 to methanol will not only check global warming but also provide an alternative source of fuel. The phase purity of solid catalysts has a considerable influence on the desired product selectivity. Reduction temperature is one of the most important parameters responsible for catalyst phase formation. Herein, the effect of a range of reduction temperatures between 100 and 600°C on the phase composition of Pd–Ga bimetallic catalyst and CO2 hydrogenation to methanol activity was investigated. X‐ray diffraction (XRD) analysis revealed the formation of different phases at different reduction temperatures. The variation in catalyst structure was also analyzed using field emission scanning electron microscope‐energy dispersive X‐ray spectroscopy (FESEM‐EDS), Brunaue–Emmett–Teller, H2 chemisorption, and transmission electron microscopy techniques. The influence of reduction temperature, pressure (1–25 bar), H2/CO2 ratio (3–9), and reaction temperature (150–250°C) on methanol and CO selectivity from CO2 hydrogenation at atmospheric pressure was also studied. © 2019 Society of Chemical Industry and John Wiley & Sons, Ltd.

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Section: Catalyst Activity Testingmentioning

confidence: 73%

Section: Effect Of Pressurementioning

confidence: 99%

Influence of reduction temperature on the formation of intermetallic Pd₂Ga phase and its catalytic activity in CO₂ hydrogenation to methanol

Ahmad

Upadhyayula

2019

Greenhouse Gases

View full text Add to dashboard Cite

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“…However, the high‐pressure condition is a significant barrier for industry to overcome because first, elevating pressure increases operational cost and second, the catalytic procedure at high pressure cannot be coupled with the upstreaming low‐pressure CO 2 /H 2 mixture (at or below 20 bar) produced from low‐temperature aqueous phase reforming of biomass derivatives . To explore low‐pressure or even atmospheric‐pressure methanol synthesis, which has become an attractive topic in recent years, Pd based catalysts have been developed by a few groups, due to the high capability of H 2 dissociation over Pd . However, these systems still suffer from low methanol yield at low pressure.…”

Section: Figurementioning

confidence: 99%

Plasmon‐Assisted Photothermal Catalysis of Low‐Pressure CO₂ Hydrogenation to Methanol over Pd/ZnO Catalyst

Deng

et al. 2019

ChemCatChem

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In this work, we report a novel strategy to promote the industrial methanol production from CO2 hydrogenation at low pressure (12 bar) over a Pd/ZnO catalyst via introducing light irradiation into a modified continuous‐flow fixed‐bed reactor. The methanol yield was significantly enhanced by a photothermal synergistic effect and visible light was confirmed as the major contributor (>90 %) due to the localized surface plasmon resonance of Pd.

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“…This configuration allows lower temperatures (around 90 • C) as compared to catalytic CO 2 hydrogenation processes (above 250 • C) [21,[29][30][31].…”

Section: Co 2 Conversion Electrocatalytic Experimentsmentioning

confidence: 99%

Low-Temperature Electrocatalytic Conversion of CO2 to Liquid Fuels: Effect of the Cu Particle Size

et al. 2018

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A novel gas-phase electrocatalytic system based on a low-temperature proton exchange membrane (Sterion) was developed for the gas-phase electrocatalytic conversion of CO 2 to liquid fuels. This system achieved gas-phase electrocatalytic reduction of CO 2 at low temperatures (below 90 • C) over a Cu cathode by using water electrolysis-derived protons generated in-situ on an IrO 2 anode. Three Cu-based cathodes with varying metal particle sizes were prepared by supporting this metal on an activated carbon at three loadings (50, 20, and 10 wt %; 50% Cu-AC, 20% Cu-AC, and 10% Cu-AC, respectively). The cathodes were characterized by N 2 adsorption-desorption, temperature-programmed reduction (TPR), and X-ray diffraction (XRD) and their performance towards the electrocatalytic conversion of CO 2 was subsequently studied. The membrane electrode assembly (MEA) containing the cathode with the largest Cu particle size (50% Cu-AC, 40 nm) showed the highest CO 2 electrocatalytic activity per mole of Cu, with methyl formate being the main product. This higher electrocatalytic activity was attributed to the lower Cu-CO bonding strength over large Cu particles. Different product distributions were obtained over 20% Cu-AC and 10% Cu-AC, with acetaldehyde and methanol being the main reaction products, respectively. The CO 2 consumption rate increased with the applied current and reaction temperature.

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CO2 Hydrogenation to Methanol at Atmospheric Pressure: Influence of the Preparation Method of Pd/ZnO Catalysts

Cited by 57 publications

References 20 publications

Influence of reduction temperature on the formation of intermetallic Pd₂Ga phase and its catalytic activity in CO₂ hydrogenation to methanol

Influence of reduction temperature on the formation of intermetallic Pd₂Ga phase and its catalytic activity in CO₂ hydrogenation to methanol

Plasmon‐Assisted Photothermal Catalysis of Low‐Pressure CO₂ Hydrogenation to Methanol over Pd/ZnO Catalyst

Low-Temperature Electrocatalytic Conversion of CO2 to Liquid Fuels: Effect of the Cu Particle Size

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CO2 Hydrogenation to Methanol at Atmospheric Pressure: Influence of the Preparation Method of Pd/ZnO Catalysts

Cited by 57 publications

References 20 publications

Influence of reduction temperature on the formation of intermetallic Pd2Ga phase and its catalytic activity in CO2 hydrogenation to methanol

Influence of reduction temperature on the formation of intermetallic Pd2Ga phase and its catalytic activity in CO2 hydrogenation to methanol

Plasmon‐Assisted Photothermal Catalysis of Low‐Pressure CO2 Hydrogenation to Methanol over Pd/ZnO Catalyst

Low-Temperature Electrocatalytic Conversion of CO2 to Liquid Fuels: Effect of the Cu Particle Size

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Influence of reduction temperature on the formation of intermetallic Pd₂Ga phase and its catalytic activity in CO₂ hydrogenation to methanol

Influence of reduction temperature on the formation of intermetallic Pd₂Ga phase and its catalytic activity in CO₂ hydrogenation to methanol

Plasmon‐Assisted Photothermal Catalysis of Low‐Pressure CO₂ Hydrogenation to Methanol over Pd/ZnO Catalyst