Solvothermal preparation of CuO-ZnO-ZrO2 catalysts for methanol synthesis via CO2 hydrogenation

Liang, Yannan; Mao, Dongsen; Guo, Xiaoming; Yu, Jun; Wu, Guisheng; Ma, Zhen

doi:10.1016/j.jtice.2021.03.049

Cited by 31 publications

(13 citation statements)

References 79 publications

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“…The CH 3 OH selectivity was ranked as: CMLZ‐H>CMLZ‐S>CMLZ‐CP>CMZ‐CP. It has been shown that the selectivity of methanol was related with the strength of weak base sites, the proportion and number of medium to strong basic sites and the ratio of strong base sites of catalyst [8,14,24,26b,29a] . In this study, the methanol selectivity was positively correlated with the proportion of medium to strong basic sites (Figure 7d).…”

Section: Resultssupporting

confidence: 57%

Effect of Preparation Method on the Performance of Cu−Mn−(La)−Zr Catalysts for CO₂ Hydrogenation to Methanol

et al. 2022

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A series of CuÀ MnÀ (La)À Zr catalysts with molecular ratios of 6 : 3 : (0.35) : 1 was synthesized by sol-gel (CMLZÀ S), co-precipitation (CMLÀ CP, CMLZÀ CP) and hydrothermal (CMLZÀ H) methods, respectively. The effects of the Mn and La on the activity of catalysts were investigated. It was found that the addition of La promoted the formation of the medium basic sites. Mn acted as an electronic promotor that transfer electrons through redox reactions, causing other metals to exhibit different valence states, thus promoting the adsorption and activation of H 2 and CO 2 . At a certain temperature, methanol selectivity decreased in the order of CMLZÀ H > CMLZÀ S > CMLZÀ CP > CMZÀ CP. The selectivity of methanol is correlated with the distribution of basic sites. For the CMLZÀ H catalyst, the highest percentage of moderate basic sites facilitated the activation of CO 2 , resulting in the highest selectivity of methanol. The CO 2 conversion was correlated with the Cu specific surface area.

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Section: Resultssupporting

confidence: 57%

Effect of Preparation Method on the Performance of Cu−Mn−(La)−Zr Catalysts for CO₂ Hydrogenation to Methanol

et al. 2022

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“…[54] As shown in Figure 3e, two peaks are located at 464.03 and 458.58 eV corresponding to the Ti 2p 1/2 and the Ti 2p 3/2 , which are in good agreement with rutile TiO 2 . [55] The gap between the two peaks is about 5.45 eV, corroborating that the main oxidation state of Ti at the ZnO-TiO 2 heterojunction is Ti 4+ . It can be seen that the binding energies of ZnO-TiO 2 for Ti 2p 1/2 and Ti 2p 3/2 are negatively shifted (−0.14 and −0.04 eV) compared with pure TiO 2 .…”

Section: Resultsmentioning

confidence: 59%

“…[54] As shown in Figure 3h, two peaks are located at 933.3 and 953.3 eV corresponding to the Cu 2p 3/2 and Cu 2p 1/2 peaks. [55] It can be seen that the binding energies of pTTh-CuO for Cu 2p 1/2 are positively shifted compared with pure CuO. The increased binding energy of CuO enforces electron transfers through the interface from CuO to pTTh.…”

Section: Resultsmentioning

confidence: 90%

A Dual Photoelectrode Photoassisted Fe–Air Battery: The Photo‐Electrocatalysis Mechanism Accounting for the Improved Oxygen Evolution Reaction and Oxygen Reduction Reaction of Air Electrodes

Qian

Hou

et al. 2021

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Seeking advanced energy conversion devices, which are sustainable as well as environment friendly, is extremely challenging in our modern society. [3,4] In this regard, the metal-air battery is among the alternative costeffective battery technologies with high energy density, environmentally friendly, and which is composed of an air electrode and a metal electrode, generating electricity through the redox reaction. [5] Among the various metal-air batteries, Li-air and Zn-air batteries have received the most extensive attention. [6] Although Li-air battery exhibits extremely high theoretical energy density (3500 Wh kg −1 ), Li is so reactive that the Li-air battery inevitably faces security risks. [7,8] Iron (Fe) is the fourth most abundant element in the world. In addition, Fe is also a cheap, safe, and environmentally friendly anode material for metal-air batteries. [9] Therefore, compared with the Zn anode, Fe as the anode can reduce battery cost for its abundant reserves. [10] The Fe-air battery has been considered as a low-cost, environmentally benign electrochemical energy-storage system. [11][12][13] Fe-air battery can sustain more charge-discharge cycles than Zn-air battery due to its lower susceptibility to dendrite formation. [8] Intrinsically, the Fe-air battery can store/ release energy repeatedly as needed via oxygen evolution reaction (OER)/oxygen reduction reaction (ORR) but this process is always plagued by slow kinetics of OER/ORR. [14] Therefore, the study on improving reaction kinetics or lowering overpotential of OER/ORR has garnered considerable research interest in recent years. [5,15] Yu et al. used IrO 2 /Ti as the electrode of Fe-air battery to reduce the overpotential of OER and it can achieve a charge voltage of 1.65 V at 1 mA cm −2 . [12] To further reduce the OER/ORR overpotential of metal-air battery, the combination of solar energy and battery is a new research field with fascinating prospects. [16] Solar energy has been utilized in various electrochemical devices for improved reaction kinetics and lowered overpotential, such as hydrogen evolution reaction, water spilling, and pollutant degradation. [17][18][19][20][21] For the aqueous metal-air battery, it usually involves a semiconductor that, upon illumination, could generate Effective utilization of solar energy in battery systems is a promising solution to achieve sustainable and green development. In this work, a photoassisted Fe-air battery (PFAB) with two photoelectrodes of ZnO-TiO 2 heterostructure and polyterthiophene (pTTh)-coated CuO (pTTh-CuO) grown on fluorinedoped tin oxide (FTO) is proposed. The band structure of semiconductors and the charge-transfer mechanism of heterostructure are studied. The electrochemical results show that the photogenerated electrons and holes play key roles in reducing the oxygen evolution reaction (OER)/oxygen reduction reaction (ORR) overpotential in the discharging and charging processes, respectively. The short-circuit current density, the open-circuit voltage, and the maximum power outpu...

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“…Hence, CZA-2-R catalyst for CO 2 hydrogenation to methanol transformed from kinetics to thermodynamics with 230 °C as the critical point. 64,69 CO 2 + 3H 2 ⇋ CH 3 OH + H 2 O Δ H 298 = −49.47 kJ mol −1 CO 2 + H 2 ⇋ CO + H 2 O Δ H 298 = 41.17 kJ mol −1 …”

Section: Resultsmentioning

confidence: 99%

Design of Cu/ZnO/Al₂O₃catalysts with a rich Cu–ZnO interface for enhanced CO₂hydrogenation to methanol using zinc-malachite as the precursor

Zhang

Han

et al. 2023

New J. Chem.

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Solvothermal preparation of CuO-ZnO-ZrO2 catalysts for methanol synthesis via CO2 hydrogenation

Cited by 31 publications

References 79 publications

Effect of Preparation Method on the Performance of Cu−Mn−(La)−Zr Catalysts for CO₂ Hydrogenation to Methanol

Effect of Preparation Method on the Performance of Cu−Mn−(La)−Zr Catalysts for CO₂ Hydrogenation to Methanol

A Dual Photoelectrode Photoassisted Fe–Air Battery: The Photo‐Electrocatalysis Mechanism Accounting for the Improved Oxygen Evolution Reaction and Oxygen Reduction Reaction of Air Electrodes

Design of Cu/ZnO/Al₂O₃catalysts with a rich Cu–ZnO interface for enhanced CO₂hydrogenation to methanol using zinc-malachite as the precursor

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Solvothermal preparation of CuO-ZnO-ZrO2 catalysts for methanol synthesis via CO2 hydrogenation

Cited by 31 publications

References 79 publications

Effect of Preparation Method on the Performance of Cu−Mn−(La)−Zr Catalysts for CO2 Hydrogenation to Methanol

Effect of Preparation Method on the Performance of Cu−Mn−(La)−Zr Catalysts for CO2 Hydrogenation to Methanol

A Dual Photoelectrode Photoassisted Fe–Air Battery: The Photo‐Electrocatalysis Mechanism Accounting for the Improved Oxygen Evolution Reaction and Oxygen Reduction Reaction of Air Electrodes

Design of Cu/ZnO/Al2O3catalysts with a rich Cu–ZnO interface for enhanced CO2hydrogenation to methanol using zinc-malachite as the precursor

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Effect of Preparation Method on the Performance of Cu−Mn−(La)−Zr Catalysts for CO₂ Hydrogenation to Methanol

Effect of Preparation Method on the Performance of Cu−Mn−(La)−Zr Catalysts for CO₂ Hydrogenation to Methanol

Design of Cu/ZnO/Al₂O₃catalysts with a rich Cu–ZnO interface for enhanced CO₂hydrogenation to methanol using zinc-malachite as the precursor