Ag addition to CuO-ZrO 2 catalysts promotes methanol synthesis via CO 2 hydrogenation

Tada, Shohei; Watanabe, Fumio; Kiyota, Keiko; Shimoda, Naohiro; Hayashi, Reina; Takahashi, Makoto; Nariyuki, Akane; Igarashi, Akira; Satokawa, Shigeo

doi:10.1016/j.jcat.2017.04.021

Cited by 109 publications

(85 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It is clear that all the catalysts show broad reduction peaks with a shoulder peak. The shoulder peak at low temperature is assignable to the reduction of highly dispersed CuO, and the reduction peak at high temperature can be attributed to the reduction of bulk CuO . For the CZA catalyst, the reduction peak appears at 265 °C.…”

Section: Resultsmentioning

confidence: 99%

Enhanced Catalytic Performance for CO₂ Hydrogenation to Methanol over N‐doped Graphene Incorporated Cu‐ZnO‐Al₂O₃ Catalysts

Geng

Zhang

et al. 2019

ChemistrySelect

View full text Add to dashboard Cite

N-doped graphene (NG) incorporated Cu-ZnO-Al 2 O 3 (CZA) catalysts were prepared by co-precipitation method and their catalytic performances for CO 2 hydrogenation to methanol were evaluated under the reaction conditions of 200 ○C and 3.0 MPa. The results indicate that NG promotes effectively the dispersion of CZA and changes the electron structure of CZA, which could provide synergistic effect for methanol synthesis. When NG content is 10 wt.%, the CO 2 conversion and methanol selectivity can achieve the highest values of 8.2% and 84%, respectively, which are much higher than those of traditional CZA catalyst.[a] Dr.

show abstract

Section: Resultsmentioning

confidence: 99%

Enhanced Catalytic Performance for CO₂ Hydrogenation to Methanol over N‐doped Graphene Incorporated Cu‐ZnO‐Al₂O₃ Catalysts

Geng

Zhang

et al. 2019

ChemistrySelect

View full text Add to dashboard Cite

show abstract

“…Therefore, the catalyst performance depends on the right "deal" between the two catalytic functionalities [3,38,45,46,[49][50][51].…”

Section: Discussionmentioning

confidence: 99%

“…normalized yield at the varying of MSA/SAR discloses the structure-activity relationship of these catalytic materials, and at the same time, reflects the effect of chemical composition. In addition, the existence of a maximum value of methanol yield, which should be achieved at 5.0 MPa at an "ideal" ratio of MSA/SAR near to 0.3, clearly signs the need of a perfect synergism between the two catalytic functionalities, available through a proper design of the catalyst [51][52][53][54].…”

Section: Discussionmentioning

confidence: 99%

Hydrogen Utilization in Green Fuel Synthesis via CO2 Conversion to Methanol over New Cu-Based Catalysts

Spadaro

Santoro

Palella³

et al. 2017

ChemEngineering

View full text Add to dashboard Cite

Abstract:The use of hydrogen as an energy vector and raw material for "very clean liquid fuels" manufacturing has been assessed by the catalytic conversion of CO 2 to methanol over copper based catalysts. A systematic evaluation of copper based catalysts, prepared varying the chemical composition, has been carried out at 0.1-5.0 MPa of total pressure and in the range of 453-513 K by using a semi-automated LAB-microplant, under CO 2 /H 2 reactant mixture (1/3), fed at GHSV of 8.8 NL·kg cat −1 ·h −1 . Material's properties have been investigated by the means of chemical-physical studies. The findings disclose that the addition of structure promoters (i.e., ZrO 2 /CeO 2 ) strongly improves the textural properties of catalysts, in term of total surface area and exposure of metal surface area (MSA), also reducing the sintering phenomena. The results of the catalytic study clearly prove a structure-activity relationship at low reaction pressure (0.1 MPa), while at higher pressure (3.0-5.0 MPa) the reaction path is insensitive to structure and chemical composition.

show abstract

“…So far, various catalysts for this reaction, such as Cu/ZrO 2 , Cu‐Ag/ZrO 2 , Cu/ZrO 2 /SiO 2 , Cu/ZnO/ZrO 2 , Cu/CeO 2 /TiO 2 , MnO x /m‐CoO x , InO 2 /ZrO 2 , Cu‐In/SiO 2 , Ni‐Ga/SiO 2 , ZnO/ZrO 2 , Pd/ZnO, Pd‐Cu/SiO 2 , and Cu/ZnO/Al 2 O 3 , have been proposed. Among them, the Cu/ZrO 2 catalyst would be a promising candidate because of its activity and selectivity for CO 2 hydrogenation to methanol (S. Tada et al, unpublished data) …”

Section: Introductionmentioning

confidence: 99%

“…In CO 2 hydrogenation to methanol (CO 2 + 3H 2 → CH 3 OH + H 2 O) by Cu/ZrO 2 catalyst, the interface of Cu‐ZrO 2 is considered the active site . In contrast, the metallic Cu surface is known as an active center for direct reduction of CO 2 to undesirable CO via reverse water gas shift reaction (CO 2 + H 2 → CO + H 2 O) . Thus, smaller Cu particles on ZrO 2 are more favorable for selective methanol generation via CO 2 hydrogenation because of the higher ratio of the interface of Cu‐ZrO 2 sites to the metallic Cu sites .…”

Section: Introductionmentioning

confidence: 99%

Influences of particle size and crystallinity of highly loaded CuO/ZrO₂ on CO₂ hydrogenation to methanol

et al. 2019

Self Cite

View full text Add to dashboard Cite

In this study, highly loaded CuO (65.2 wt%) on ZrO2 support was prepared by flame spray pyrolysis, and the effects of their particle sizes and ZrO2 crystallinity on CO2 hydrogenation to methanol were investigated. By varying the precursor feed rate (1–10 mL min−1), the crystallite size (3–7 nm) and the crystallinity of tetragonal ZrO2 were controlled. After H2 reduction at 300°C, the Cu species in the catalysts, prepared at the feed rate = 2–10 mL min−1, were converted to Cu particles (approximately 10–20 nm); however, the size and crystallinity of ZrO2 remained the same. The activity and selectivity of the catalysts prepared at the feed rate = 2–3 mL min−1 were higher than those of the catalysts prepared at the feed rates = 5–10 mL min−1, because the smaller ZrO2 particles in the former provided more surface to stabilize small Cu particles and from interfacial Cu‐ZrO2 sites (active sites).

show abstract

Ag addition to CuO-ZrO 2 catalysts promotes methanol synthesis via CO 2 hydrogenation

Cited by 109 publications

References 40 publications

Enhanced Catalytic Performance for CO₂ Hydrogenation to Methanol over N‐doped Graphene Incorporated Cu‐ZnO‐Al₂O₃ Catalysts

Enhanced Catalytic Performance for CO₂ Hydrogenation to Methanol over N‐doped Graphene Incorporated Cu‐ZnO‐Al₂O₃ Catalysts

Hydrogen Utilization in Green Fuel Synthesis via CO2 Conversion to Methanol over New Cu-Based Catalysts

Influences of particle size and crystallinity of highly loaded CuO/ZrO₂ on CO₂ hydrogenation to methanol

Contact Info

Product

Resources

About

Ag addition to CuO-ZrO 2 catalysts promotes methanol synthesis via CO 2 hydrogenation

Cited by 109 publications

References 40 publications

Enhanced Catalytic Performance for CO2 Hydrogenation to Methanol over N‐doped Graphene Incorporated Cu‐ZnO‐Al2O3 Catalysts

Enhanced Catalytic Performance for CO2 Hydrogenation to Methanol over N‐doped Graphene Incorporated Cu‐ZnO‐Al2O3 Catalysts

Hydrogen Utilization in Green Fuel Synthesis via CO2 Conversion to Methanol over New Cu-Based Catalysts

Influences of particle size and crystallinity of highly loaded CuO/ZrO2 on CO2 hydrogenation to methanol

Contact Info

Product

Resources

About

Enhanced Catalytic Performance for CO₂ Hydrogenation to Methanol over N‐doped Graphene Incorporated Cu‐ZnO‐Al₂O₃ Catalysts

Enhanced Catalytic Performance for CO₂ Hydrogenation to Methanol over N‐doped Graphene Incorporated Cu‐ZnO‐Al₂O₃ Catalysts

Influences of particle size and crystallinity of highly loaded CuO/ZrO₂ on CO₂ hydrogenation to methanol