The role of ZnO in Cu/ZnO methanol synthesis catalysts

Nakamura, Junji; Uchijima, Toshio; Kanai, Yuki; Fujitani, Tadahiro

doi:10.1016/0920-5861(95)00240-5

Cited by 142 publications

(109 citation statements)

References 15 publications

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“…In spite of the extensive literature of oxide-promoted Cu catalyst, the role of different components is still matter of debate [4,13,14,20]. In this context, trying to reveal whether there is a synergetic effect via the interaction between different components and how that influences the catalytic reaction, systematic TPD studies of single, di-, and multi-component systems involved in MeOH synthesis reaction were conducted.…”

Section: Discussion On the Synergetic Effect Of Czz Catalystmentioning

confidence: 99%

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Catalytic Hydrogenation of CO2 to Methanol: Study of Synergistic Effect on Adsorption Properties of CO2 and H2 in CuO/ZnO/ZrO2 System

et al. 2015

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A series of CuO/ZnO/ZrO2 (CZZ) catalysts with different CuO/ZnO weight ratios have been synthesized by citrate method and tested in the catalytic hydrogenation of CO2 to methanol. Experimental results showed that the catalyst with the lowest CuO/ZnO weight ratio of 2/7 exhibited the best catalytic performance with a CO2 conversion of 32.9%, 45.8% methanol selectivity, and a process delivery of 193.9 gMeOH·kgcat. A synergetic effect is found by systematic temperature-programmed-desorption (TPD) studies. Comparing with single and di-component systems, the interaction via different components in a CZZ system provides additional active sites to adsorb more H2 and CO2 in the low temperature range, resulting in higher weight time yield (WTY) of methanol.

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Section: Discussion On the Synergetic Effect Of Czz Catalystmentioning

confidence: 99%

“…In addition to permanent storage and direct utilization as a solvent or working fluid, chemical conversion of CO2 to useful chemicals, such as methanol (MeOH), is recently under increased scrutiny as an opportunity to be used as a low-cost carbon source [4].…”

Section: Open Accessmentioning

confidence: 99%

Catalytic Hydrogenation of CO2 to Methanol: Study of Synergistic Effect on Adsorption Properties of CO2 and H2 in CuO/ZnO/ZrO2 System

et al. 2015

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“…These methoxy intermediates formed by continuous addition of proton and electron to CO .-species [85].There is no general understanding on mechanism of methanol formation [27], [33], [35], [113], [114].…”

Section: Detailed Analysis Of Faradic Efficiency Resultsmentioning

confidence: 99%

“…ZnO actually distributes Cu over the surface which turns to increase active sites for hydrogenation reaction, are main reasons behind the increased in current efficiency for methanol. [35], [80] Pi bonding increased the strength of CO and provided activation energy to the carbon of CO, this increase in activation energy increases the methanol production [81], [82].…”

Section: Mechanism Of Electrochemical Co 2 Reduction To Hydrocarbon Amentioning

confidence: 99%

Electrochemical Reduction of CO₂ at Temperatures Below 300 ^oC

Hallinder¹,

Holtappels²,

Mogensen³

2012

ECS Trans.

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Reduction of CO2 at intermediate temperatures (T< 300 oC) is a tempting way to produce hydrocarbons. One benefit of performing CO2 reduction below 300 oC is that it would possibly allow a single process for production of hydrocarbons. CsH2PO4, BaHPO4 and a composite thereof have been investigated as electrolyte materials both with respect to thermal stability and to conductivity. BaHPO4 showed an improved thermal stability compared to CsH2PO4, but it did at the same time exhibit a low conductivity (1⋅10-6 S cm-1 at 304 oC). CsH2PO4 started to dehydrate at 249 oC, but this dehydration was shown to be reversible. Its conductivity was measured to be 2⋅10-2 S cm-1 at 240 oC. Full cells with copper as the CO2 reduction catalyst have been manufactured and tested in CO2 containing atmospheres. Initial performance of 34 mA cm-2 at 245 oC has been achieved.

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“…The role of Cu defects and disorder [19][20] and of the "synergetic" role of ZnO [21][22], which exceeds the function of a mere physical stabilizer are vividly debated since many years, but beyond the scope of the present paper. The synthesis of (Al 2 O 3 -promoted) Cu/ZnO catalyst is analyzed here assuming that the copper nanoparticles must fulfill three requirements for high catalytic performance [23]: 1.)…”

Section: Synthesis Of Technical Methanol Synthesis Catalystsmentioning

confidence: 99%

Coprecipitation: An excellent tool for the synthesis of supported metal catalysts – From the understanding of the well known recipes to new materials

Behrens

2015

Catalysis Today

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Abstract:Constant-pH co-precipitation is a standard synthesis technique for catalyst precursors.The general steps of this synthesis route are described in this work using the successfully applied industrial synthesis of the Cu/ZnO/(Al 2 O 3 ) catalyst for methanol synthesis as an example. Therein, co-precipitation leads to well-defined and crystalline precursor compound with a mixed cationic lattice that contains all metal species of the final catalyst. The anions are thermally decomposed to give the mixed oxides and the noblest component, in this current case copper, finally segregates on a nano-metric level to yield supported and uniform metal nanoparticles. Recent examples of the application of this synthesis concept for supported catalysts are reported with an emphasis on the layered double hydroxide precursor (Cu,Zn,Al; Ni,Mg,Al; Pd,Mg,Al; Pd,Mg,Ga). This precursor material is very versatile and can lead to highly loaded base metal as well as to mono-and bi-metallic highly dispersed noble metal catalysts.

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The role of ZnO in Cu/ZnO methanol synthesis catalysts

Cited by 142 publications

References 15 publications

Catalytic Hydrogenation of CO2 to Methanol: Study of Synergistic Effect on Adsorption Properties of CO2 and H2 in CuO/ZnO/ZrO2 System

Catalytic Hydrogenation of CO2 to Methanol: Study of Synergistic Effect on Adsorption Properties of CO2 and H2 in CuO/ZnO/ZrO2 System

Electrochemical Reduction of CO₂ at Temperatures Below 300 ^oC

Coprecipitation: An excellent tool for the synthesis of supported metal catalysts – From the understanding of the well known recipes to new materials

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The role of ZnO in Cu/ZnO methanol synthesis catalysts

Cited by 142 publications

References 15 publications

Catalytic Hydrogenation of CO2 to Methanol: Study of Synergistic Effect on Adsorption Properties of CO2 and H2 in CuO/ZnO/ZrO2 System

Catalytic Hydrogenation of CO2 to Methanol: Study of Synergistic Effect on Adsorption Properties of CO2 and H2 in CuO/ZnO/ZrO2 System

Electrochemical Reduction of CO2 at Temperatures Below 300 oC

Coprecipitation: An excellent tool for the synthesis of supported metal catalysts – From the understanding of the well known recipes to new materials

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Product

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Electrochemical Reduction of CO₂ at Temperatures Below 300 ^oC