Enhanced catalytic performance of Zr modified CuO/ZnO/Al2O3 catalyst for methanol and DME synthesis via CO2 hydrogenation

Ren, Shoujie; Fan, Xiaoyue; Shang, Zeyu; Shoemaker, Weston R.; Ma, Lu; Wu, Tianpin; Li, Shiguang; Klinghoffer, Naomi; Yu, Miao; Liu, Xinhua

doi:10.1016/j.jcou.2019.11.013

Cited by 88 publications

(67 citation statements)

References 50 publications

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“…It can be observed that all catalysts exhibited similar weight loss behavior after hydrogenation test. The weight losses of CZA-L and CZA-H catalysts in the temperature range of 300-600 C were used to explain the amount of carbon content from the burning of coke implanted on the catalyst surface (Zhuang et al, 2019;Ren et al, 2020). Considering the CO hydrogenation, the amount of coke on the surface of catalysts was 0.8% and 2.3% for the spent CZA-H and CZA-L, respectively.…”

Section: The Deactivation Of Spent Catalystsmentioning

confidence: 99%

“…The CZA catalyst is appropriate for methanol synthesis and it is more active in hydrogenation under high pressure. However, the deactivation is still a problem because the by-product formed during the hydrogenation can transform to coke and block the active surface leading to decreased catalytic activity (Ren et al, 2020). Besides, the depletion of metal oxide species arrangement (such as metal oxide dispersion) on the surface can also influence on the catalytic ability (Chu et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Comparative study on the effect of different copper loading on catalytic behaviors and activity of Cu/ZnO/Al2O3 catalysts toward CO and CO2 hydrogenation

Kamsuwan

Krutpijit

Praserthdam

et al. 2021

Heliyon

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Comparative study of Cu/ZnO/Al 2 O 3 (CZA) catalysts with different Cu loading in CO and CO 2 hydrogenation at 250 C under atmospheric pressure was investigated. Results showed that methanol was the major product for CO hydrogenation, while the main product for CO 2 hydrogenation was CO. High Cu loading catalyst exhibited high catalytic activity in both CO and CO 2 hydrogenation. Low Cu loading catalyst showed deactivation with time on stream after 1-2 h by coke formation containing both amorphous and graphitic cokes for both CO and CO 2 hydrogenation.

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Section: The Deactivation Of Spent Catalystsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparative study on the effect of different copper loading on catalytic behaviors and activity of Cu/ZnO/Al2O3 catalysts toward CO and CO2 hydrogenation

Kamsuwan

Krutpijit

Praserthdam

et al. 2021

Heliyon

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show abstract

“…As one of the key features that limits the effectiveness of bifunctional catalysts is the water production from the use of CO 2 instead of CO, recent research has been conducted to improve the stability of the hydrogenation catalyst. Zirconium modified CZA catalysts (Ren et al, 2020) and zeolite surface interaction with CuO-ZnO-ZrO 2 (Bonura et al, 2020) have both been shown to increase the stability of the catalysts with significant improvements on catalytic stabilities being recorded.…”

Section: Dimethyl Ether Synthesismentioning

confidence: 99%

Synthetic Fuels Based on Dimethyl Ether as a Future Non-Fossil Fuel for Road Transport From Sustainable Feedstocks

2021

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In this review we consider the important future of the synthetic fuel, dimethyl ether (DME). We compare DME to two alternatives [oxymethylene ether (OMEx) and synthetic diesel through Fischer-Tropsch (FT) reactions]. Finally, we explore a range of methodologies and processes for the synthesis of DME.DME is an alternative diesel fuel for use in compression ignition (CI) engines and may be produced from a range of waste feedstocks, thereby avoiding new fossil carbon from entering the supply chain. DME is characterised by low CO2, low NOx and low particulate matter (PM) emissions. Its high cetane number means it can be used in CI engines with minimal modifications. The key to creating a circular fuels economy is integrating multiple waste streams into an economically and environmentally sustainable supply chain. Therefore, we also consider the availability and nature of low-carbon fuels and hydrogen production. Reliable carbon dioxide sources are also essential if CO2 utilisation processes are to become commercially viable. The location of DME plants will depend on the local ecosystems and ideally should be co-located on or near waste emitters and low-carbon energy sources. Alternative liquid fuels are considered interesting in the medium term, while renewable electricity and hydrogen are considered as reliable long-term solutions for the future transport sector. DME may be considered as a circular hydrogen carrier which will also be able to store energy for use at times of low renewable power generation.The chemistry of the individual steps within the supply chain is generally well known and usually relies on the use of cheap and Earth-abundant metal catalysts. The thermodynamics of these processes are also well-characterised. So overcoming the challenge now relies on the expertise of chemical engineers to put the fundamentals into commercial practice. It is important that a whole systems approach is adopted as interventions can have detrimental unintended consequences unless close monitoring is applied. This review shows that while DME production has been achieved and shows great promise, there is considerable effort needed if we are to reach true net zero emissions in the transport sector, particularly long-haul road use, in the require timescales.

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“…Methanol is commonly produced from syngas using commercial CuO/ZnO/Al 2 O 3 catalysts [8]. However, its production from CO 2 and renewable hydrogen is now considered as one of the most promising pathways to alleviate the global warming and result in production of renewable fuels and valuable chemicals [9].…”

Section: Introductionmentioning

confidence: 99%

Ex-LDH-Based Catalysts for CO2 Conversion to Methanol and Dimethyl Ether

Mureddu¹,

Lai²,

Atzori

et al. 2021

Catalysts

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CO2-derived methanol and dimethyl ether can play a very important role as fuels, energy carriers, and bulk chemicals. Methanol production from CO2 and renewable hydrogen is considered to be one of the most promising pathways to alleviate global warming. In turn, methanol could be subsequently dehydrated into DME; alternatively, one-step CO2 conversion to DME can be obtained by hydrogenation on bifunctional catalysts. In this light, four oxide catalysts with the same Cu and Zn content (Cu/Zn molar ratio = 2) were synthesized by calcining the corresponding CuZnAl LDH systems modified with Zr and/or Ce. The fresh ex-LDH catalysts were characterized in terms of composition, texture, structure, surface acidity and basicity, and reducibility. Structural and acid–base properties were also studied on H2-treated samples, on which specific metal surface area and dispersion of metallic Cu were determined as well. After in situ H2 treatment, the ex-LDH systems were tested as catalysts for the hydrogenation of CO2 to methanol at 250 °C and 3.0 MPa. In the same experimental conditions, CO2 conversion into dimethyl ether was studied on bifunctional catalysts obtained by physically mixing the exLDH hydrogenation catalysts with acid ferrierite or ZSM-5 zeolites. For both processes, the effect of the Al/Zr/Ce ratio on the products distribution was investigated.

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Enhanced catalytic performance of Zr modified CuO/ZnO/Al2O3 catalyst for methanol and DME synthesis via CO2 hydrogenation

Cited by 88 publications

References 50 publications

Comparative study on the effect of different copper loading on catalytic behaviors and activity of Cu/ZnO/Al2O3 catalysts toward CO and CO2 hydrogenation

Comparative study on the effect of different copper loading on catalytic behaviors and activity of Cu/ZnO/Al2O3 catalysts toward CO and CO2 hydrogenation

Synthetic Fuels Based on Dimethyl Ether as a Future Non-Fossil Fuel for Road Transport From Sustainable Feedstocks

Ex-LDH-Based Catalysts for CO2 Conversion to Methanol and Dimethyl Ether

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