Cu based catalysts for syngas production from ethanol dry reforming: Effect of oxide supports

Cao, Dong; Zeng, Fanli; Zhao, Zijiao; Cai, Wei; Li, Yi; Yu, Hao; Zhang, Shaoyin; Qu, Fengli

doi:10.1016/j.fuel.2018.01.096

Cited by 35 publications

(35 citation statements)

References 72 publications

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“…SEM images of spent samples (see Figure ) reveal the inevitable formation of carbon nanofilaments (CNFs) on catalyst surface in line with other investigations . Indeed, CNF was reportedly formed from the fast polymerization of ethylene intermediate product .…”

Section: Resultssupporting

confidence: 75%

Stability evaluation of ethanol dry reforming on Lanthania‐doped cobalt‐based catalysts for hydrogen‐rich syngas generation

et al. 2018

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Summary Catalytic stability with time‐on‐stream is an important aspect in ethanol dry reforming (EDR) since catalysts could encounter undesirable deterioration arising from deposited carbon. This work examined the promotional effect of La on 10%Co/Al2O3 in terms of activity, stability, and characteristics. Catalysts were characterized by X‐ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), Raman, and X‐ray photoelectron spectroscopy (XPS) measurements whilst catalytic EDR performance of La‐promoted and unpromoted 10%Co/Al2O3 prepared via wet impregnation technique was investigated at 973 K for 72 h using a stoichiometric feed ratio (C2H5OH/CO2 = 1/1). La promoter substantially enhanced both metal dispersion and metal surface area from 0.11% to 0.64% and 0.08 to 0.43 m2 g−1, respectively. Ethanol and CO2 conversions appeared to be stable within 50 to 72 h after experiencing an initial activity drop. The conversion of C2H5OH and CO2 for La‐promoted catalyst was about 1.65 and 1.34 times greater than unpromoted counterpart in this order. The carbonaceous deposition was considerably decreased from 55.6% to 36.8% with La promotion due to La2O2CO3 intermediate formation. Additionally, 3%La‐10%Co/Al2O3 possessed greater oxygen vacancies acting as active sites for CO2 adsorption and hence increasing carbon gasification. Even though graphitic and filamentous carbons were formed on used catalyst surface, La‐addition diminished graphite formation and increased the reactiveness of amorphous carbon.

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Section: Resultssupporting

confidence: 75%

Stability evaluation of ethanol dry reforming on Lanthania‐doped cobalt‐based catalysts for hydrogen‐rich syngas generation

et al. 2018

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“…CuCeZr catalyst showed the best activity and stability due to higher Cu dispersion, strong metal support interaction and more oxygen vacancies [33][34][35][36]. The dispersion, reducibility of Ir, oxygen vacancies of supports and interaction between Ir andsupport decreased with the calcination temperature increasing.…”

Section: Cu Ceo 2 Zro 2 Cementioning

confidence: 99%

“…The dry reforming of ethanol was proposed using Cu-based catalysts [33][34][35][36]. A catalyst of Cu/Ce 0.8 Zr 0.2 O 2 was prepared using the co-precipitation method.…”

Section: Dry Reforming Of Ethanolmentioning

confidence: 99%

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Dry Reforming of Ethanol and Glycerol: Mini-Review

Odriozola

Reina

2019

Catalysts

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Dry reforming of ethanol and glycerol using CO2 are promising technologies for H2 production while mitigating CO2 emission. Current studies mainly focused on steam reforming technology, while dry reforming has been typically less studied. Nevertheless, the urgent problem of CO2 emissions directly linked to global warming has sparked a renewed interest on the catalysis community to pursue dry reforming routes. Indeed, dry reforming represents a straightforward route to utilize CO2 while producing added value products such as syngas or hydrogen. In the absence of catalysts, the direct decomposition for H2 production is less efficient. In this mini-review, ethanol and glycerol dry reforming processes have been discussed including their mechanistic aspects and strategies for catalysts successful design. The effect of support and promoters is addressed for better elucidating the catalytic mechanism of dry reforming of ethanol and glycerol. Activity and stability of state-of-the-art catalysts are comprehensively discussed in this review along with challenges and future opportunities to further develop the dry reforming routes as viable CO2 utilization alternatives.

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“…Cao et al [71] . prepared Cu/Ce 0.8 Zr 0.2 O 2 and found that the metal–support interaction between Cu and the highly redox‐active Ce 0.8 Zr 0.2 O 2 gave rise to optimal DRE activity: 100 % ethanol conversion with H 2 /CO ratio close to unity at 700 °C over 90 h TOS [72] …”

Section: Catalytic Systemsmentioning

confidence: 99%

Synthesizing High‐Volume Chemicals from CO₂ without Direct H₂ Input

et al. 2020

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Decarbonizing the chemical industry will eventually entail using CO 2 as a feedstock for chemical synthesis. However, many chemical syntheses involve CO 2 reduction using inputs such as renewable hydrogen. In this review, chemical processes are discussed that use CO 2 as an oxidant for upgrading hydrocarbon feedstocks. The captured CO 2 is inherently reduced by the hydrocarbon co-reactants without consuming molecular hydrogen or renewable electricity. This CO 2 utilization approach can be potentially applied to synthesize eight emission-intensive molecules, including olefins and epoxides. Catalytic systems and reactor concepts are discussed that can overcome practical challenges, such as thermodynamic limitations, overoxidation, coking, and heat management. Under the best-case scenario, these hydrogen-free CO 2 reduction processes have a combined CO 2 abatement potential of approximately 1 gigatons per year and avoid the consumption of 1.24 PWh renewable electricity, based on current market demand and supply.

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Cu based catalysts for syngas production from ethanol dry reforming: Effect of oxide supports

Cited by 35 publications

References 72 publications

Stability evaluation of ethanol dry reforming on Lanthania‐doped cobalt‐based catalysts for hydrogen‐rich syngas generation

Stability evaluation of ethanol dry reforming on Lanthania‐doped cobalt‐based catalysts for hydrogen‐rich syngas generation

Dry Reforming of Ethanol and Glycerol: Mini-Review

Synthesizing High‐Volume Chemicals from CO₂ without Direct H₂ Input

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Cu based catalysts for syngas production from ethanol dry reforming: Effect of oxide supports

Cited by 35 publications

References 72 publications

Stability evaluation of ethanol dry reforming on Lanthania‐doped cobalt‐based catalysts for hydrogen‐rich syngas generation

Stability evaluation of ethanol dry reforming on Lanthania‐doped cobalt‐based catalysts for hydrogen‐rich syngas generation

Dry Reforming of Ethanol and Glycerol: Mini-Review

Synthesizing High‐Volume Chemicals from CO2 without Direct H2 Input

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Product

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Synthesizing High‐Volume Chemicals from CO₂ without Direct H₂ Input