CO2 hydrogenation to methanol over Cu-ZnO-CeO2 catalyst: Reaction structure–activity relationship, optimizing Ce and Zn ratio, and kinetic study

Singh, Rajan; Kundu, Kaushik; Pant, Kamal K.

doi:10.1016/j.cej.2023.147783

Cited by 9 publications

(2 citation statements)

References 55 publications

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“…Here, representative peaks of Cu 2p3/2 (933.8 eV) and Cu 2p1/2 (953.8 eV) represent the CuO of Cu 2p. The characteristic Cu 2+ satellite peaks can be observed at 941.3 eV, 943.5 eV, and 962.2 eV, which are a result of hybridization between the 3d Cu orbital and the oxygen 2p orbital[38]. According to our previous study, the as-…”

mentioning

confidence: 83%

Forming a Cu-Based Catalyst for Efficient Hydrogenation Conversion of Starch into Glucose

Zhu,

Li,

Cheng

et al. 2024

Catalysts

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A pellet-forming as-catalyst, CuO/Al2O3, was prepared by the precipitation–tablet molding method and characterized by the Brunner–Emmet–Teller (BET), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM) techniques and TEM. The characterization results showed that the formed CuO/Al2O3 was in situ reduced to Cu/Al2O3 and Cu2O/ Al2O3 catalysts in the reaction system. The catalytic performance of catalyzing hydrogenation starch into glucose was investigated in an autoclave over CuO/Al2O3. The yield of glucose reached 83.16% at a temperature of 160 °C, a pressure of 1.8 MPa, a 100 g starch solution of 15 wt%, a catalyst dosage of 2.25%, a reaction time of 4 h, and a rotational speed of 630 r/min. The reusability of the catalyst was evaluated, and the glucose yield did not decrease obviously even after being reused for five consecutive cycles. Starch was converted into glucose through the synergistic action of Cu+ and Cu0 catalysis. This work is expected to provide valuable insights into the design of catalysts and the hydrogenation process for efficient starch hydrogenation.

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mentioning

confidence: 83%

Forming a Cu-Based Catalyst for Efficient Hydrogenation Conversion of Starch into Glucose

Zhu,

Li,

Cheng

et al. 2024

Catalysts

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“…The desorption peaks on the catalysts represent the H species adsorbed on the surface of the active component Cu [15,27]. It is generally observed that the low-temperature α peak represents the desorption of undissociated molecular hydrogen (H 2 ) weakly adsorbed on the catalyst surface, while the high-temperature β peak represents the desorption of dissociated atomic hydrogen (H) [41]. The quantitative data for the temperature and peak area of the H 2 desorption peaks are listed in Table 4.…”

Section: Co 2 -Tpdmentioning

confidence: 99%

Exploring the Effect of the Solvothermal Time on the Structural Properties and Catalytic Activity of Cu-ZnO-ZrO2 Catalysts Synthesized by the Solvothermal Method for CO2 Hydrogenation to Methanol

Han,

Liang,

et al. 2024

Catalysts

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A series of Cu-ZnO-ZrO2 (CCZ) catalysts were prepared by the solvothermal method with different solvothermal times (1 h, 3 h, 6 h, and 12 h). The physicochemical properties of these catalysts and the catalytic performance for CO2 hydrogenation to methanol were studied. The highest methanol yield was achieved when the solvothermal time was 6 h (CCZ-6). Furthermore, we found that the copper surface area (SCu) increases and then decreases with an increase in the solvothermal time and that there is a strong correlation between the methanol yield and the SCu. This research highlights the crucial influence of the solvothermal time on the structure and catalytic behavior of Cu-ZnO-ZrO2 catalysts, providing a valuable reference for the development of efficient catalysts.

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CO₂‐Hydrogenation to Methanol over CuO/ZnO Based Infiltration Composite Catalyst Spheres

Fritsch,

Dornseiffer,

Blankenstein

et al. 2024

ChemCatChem

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Multiple active component catalysts for efficient conversion of CO2 to Methanol (MeOH) are synthesized through coating γ‐Al2O3 carrier spheres by incipient wetness impregnation method (IWI). The well‐known bimetallic Copper Oxide/Zinc Oxide (CuO/ZnO) are promoted in three steps, first by Cerium Oxide (CeO2), then additionally with Zirconium Oxide (ZrO2) and finally with Calcium Oxide (CaO) resulting in four carrier catalysts with high surface area and catalyst pore. Quaternary and quinary carrier catalysts promoted with moderate CeO2, ZrO2 in the quaternary (20% CZCZ) and additionally with CaO (20% CZCZC) in the quinary catalysts demonstrate high CO2‐conversion ratios (16.2% and 18.7%) and space time yields (0.51 and 0.47 gMeOH h‐1 gCatalyst‐1) at 5 MPa and 250 °C reactor temperature. The high conversion ratios (XCO2) and good methanol space‐time‐yields (STYMeOH) are attributed to enhanced copper dispersion and several multi metal oxide component interactions essential to enhance CO2‐activation and ‐conversion through the catalytic systems as well as very high overall surface area. Compared to related studies, the carrier catalysts show superior conversion rates, proving the effectiveness of the introduced multi‐component carrier catalyst and extending the understanding of infiltrate composites as possible large‐scale application alternatives to precipitated MeOH catalyst systems.

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CO2 hydrogenation to methanol over Cu-ZnO-CeO2 catalyst: Reaction structure–activity relationship, optimizing Ce and Zn ratio, and kinetic study

Cited by 9 publications

References 55 publications

Forming a Cu-Based Catalyst for Efficient Hydrogenation Conversion of Starch into Glucose

Forming a Cu-Based Catalyst for Efficient Hydrogenation Conversion of Starch into Glucose

Exploring the Effect of the Solvothermal Time on the Structural Properties and Catalytic Activity of Cu-ZnO-ZrO2 Catalysts Synthesized by the Solvothermal Method for CO2 Hydrogenation to Methanol

CO₂‐Hydrogenation to Methanol over CuO/ZnO Based Infiltration Composite Catalyst Spheres

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CO2 hydrogenation to methanol over Cu-ZnO-CeO2 catalyst: Reaction structure–activity relationship, optimizing Ce and Zn ratio, and kinetic study

Cited by 9 publications

References 55 publications

Forming a Cu-Based Catalyst for Efficient Hydrogenation Conversion of Starch into Glucose

Forming a Cu-Based Catalyst for Efficient Hydrogenation Conversion of Starch into Glucose

Exploring the Effect of the Solvothermal Time on the Structural Properties and Catalytic Activity of Cu-ZnO-ZrO2 Catalysts Synthesized by the Solvothermal Method for CO2 Hydrogenation to Methanol

CO2‐Hydrogenation to Methanol over CuO/ZnO Based Infiltration Composite Catalyst Spheres

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About

CO₂‐Hydrogenation to Methanol over CuO/ZnO Based Infiltration Composite Catalyst Spheres