Direct Synthesis of Diethyl Carbonate from CO2 and CH3CH2OH Over Cu–Ni/AC Catalyst

Arbeláez, Oscar; Orrego, Andrés; Bustamante, Felipe; Villa, Aída Luz

doi:10.1007/s11244-012-9849-4

Cited by 36 publications

(30 citation statements)

References 10 publications

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“…However, these processes raise problems, such as toxicity of phosgene, corrosion and low production rates. The direct synthesis of DEC from CO 2 and ethanol was attempted in recent reports [14,15]. For example, a turnover frequency number (TOF) of 136 h − 1 was obtained over bimetallic Cu-Ni/AC.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of diethyl carbonate from urea and ethanol over lanthanum oxide as a heterogeneous basic catalyst

Xin

Wang

et al. 2014

Fuel Processing Technology

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Section: Introductionmentioning

confidence: 99%

Synthesis of diethyl carbonate from urea and ethanol over lanthanum oxide as a heterogeneous basic catalyst

Xin

Wang

et al. 2014

Fuel Processing Technology

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“…Therefore, one of the challenges of catalyst's design is the substitution of noble metals [20] with more common and less expensive alternatives while maintaining high catalytic efficiency. Cu, Ni and Cu-Ni supported on activated carbon has been used in methanol [21], dimethyl carbonate [22], and diethyl carbonate synthesis [23] and in principle are also suitable for the WGS reaction [24]. Nowadays, Cu and Ni metals supported on SiO 2 [25], Al 2 O 3 [26], CeO 2 [27] and ZrO 2 [28], have been widely employed as heterogeneous catalysts for the water gas shift reaction.…”

mentioning

confidence: 99%

Mono and bimetallic Cu-Ni structured catalysts for the water gas shift reaction

Arbeláez

Reina

Ivanova

et al. 2015

Applied Catalysis A: General

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Highlights-Efficient Cu-Ni catalysts supported on activated carbon for the water gas shift reaction.-Supressed methanation activity due to the presence of Cu.-Cu-Ni alloy as a key factor of the catalytic design.-Good stability and tolerance towards start/stop situations. AbstractThe water-gas shift (WGS) reaction over structured Cu, Ni, and bimetallic Cu-Ni supported on active carbon (AC) catalysts was investigated. The structured catalysts were prepared in pellets form and applied in the medium range WGS reaction. A good activity in the 180-350 °C temperature range was registered being the bimetallic Cu-Ni:2-1/AC catalyst the best catalyst. Page 2 of 38A c c e p t e d M a n u s c r i p tThe presence of Cu mitigates the methanation activity of Ni favoring the shift process. In addition the active carbon gasification reaction was not observed for the Cu-containing catalyst converting the active carbon in a very convenient support for the WGS reaction. The stability of the bimetallic Cu-Ni:2-1/AC catalyst under continuous operation conditions, as well as its tolerance towards start/stop cycles was also evaluated.

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“…After drying at 80°C for 12 h, the pellets were pyrolyzed for 1 h at 500°C in flowing N 2 (25 mL min -1 ) with a heating rate of 5°C min -1 . The bimetallic Cu:Ni-3:1 pelletized catalyst was prepared by conventional wetness impregnation of pellets previously made, following the procedure reported by Arbelaez et al [17]. Cu(NO 3 ) 2 Á3H 2 O (Carlo Erba, 99.5 %) and Ni(NO 3 ) 2 Á6H 2 O (Merck, 99 %) were used as metal precursors, and the Cu:Ni molar ratio was fixed at 3:1 with a nominal metal oxide (CuO+NiO) loading of 20 wt %.…”

Section: Catalyst Preparationmentioning

confidence: 99%

“…Indeed, a gas-phase process could be carried out under moderate pressure conditions that facilitate the control of the process and catalyst recovering, thus reducing both operational and capital costs. Arbelaez et al [17] studied the direct synthesis of DEC in gas phase at moderate temperature and pressure (110°C, 13 bar), over mono-and bimetallic Cu-Ni supported on activated carbon. The most active catalyst (Cu:Ni 3:1 molar ratio) showed 2.7 % ethanol conversion and a turnover frequency (TOF) number of 126 h -1 , the high activity resulting from the presence of Cu-Ni solid solution evidenced by X-ray diffraction (XRD).…”

Section: Introductionmentioning

confidence: 99%

Enhanced Conversion in the Direct Synthesis of Diethyl Carbonate from Ethanol and CO₂ by Process Intensification

et al. 2019

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To overcome the low equilibrium conversion in the direct synthesis of diethyl carbonate from ethanol and CO 2 under moderate reaction conditions, the reaction was conducted in a membrane reactor packed with pelletized Cu-Ni:3-1 supported on activated carbon. A SiO 2 /g-Al 2 O 3 commercial membrane and zeolite A membranes synthesized on commercial Al 2 O 3 supports were evaluated in the membrane reactor. Although characterization of the membranes by X-ray diffraction confirmed the presence of a zeolite A layer on the supports, gas permeation and permselectivity tests of ethanol and water evidenced some defects of the synthesized membranes. An increase in conversion with respect to a conventional packed-bed reactor was observed in the membrane reactors prepared on Al 2 O 3 , but equilibrium conversion was not attained. However, with the commercial membrane, the ethanol conversion was higher than the equilibrium conversion.

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Direct Synthesis of Diethyl Carbonate from CO2 and CH3CH2OH Over Cu–Ni/AC Catalyst

Cited by 36 publications

References 10 publications

Synthesis of diethyl carbonate from urea and ethanol over lanthanum oxide as a heterogeneous basic catalyst

Synthesis of diethyl carbonate from urea and ethanol over lanthanum oxide as a heterogeneous basic catalyst

Mono and bimetallic Cu-Ni structured catalysts for the water gas shift reaction

Enhanced Conversion in the Direct Synthesis of Diethyl Carbonate from Ethanol and CO₂ by Process Intensification

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Direct Synthesis of Diethyl Carbonate from CO2 and CH3CH2OH Over Cu–Ni/AC Catalyst

Cited by 36 publications

References 10 publications

Synthesis of diethyl carbonate from urea and ethanol over lanthanum oxide as a heterogeneous basic catalyst

Synthesis of diethyl carbonate from urea and ethanol over lanthanum oxide as a heterogeneous basic catalyst

Mono and bimetallic Cu-Ni structured catalysts for the water gas shift reaction

Enhanced Conversion in the Direct Synthesis of Diethyl Carbonate from Ethanol and CO2 by Process Intensification

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Enhanced Conversion in the Direct Synthesis of Diethyl Carbonate from Ethanol and CO₂ by Process Intensification