Chemicals from ethanol—The ethyl acetate one-pot synthesis

Gaspar, Alexandre B.; Esteves, A.M.L.; Mendes, Fernanda de Souza Nogueira Sardinha; Barbosa, Flavia G.; Appel, Lucia G.

doi:10.1016/j.apcata.2009.05.001

Cited by 54 publications

(17 citation statements)

References 26 publications

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“…However, there are still several problems associated with these processes, such as the toxicity of acetaldehyde or the corrosion of acetic acid. Therefore, the development of novel and environmental benign process for the production of ethyl acetate is still desirable [1].…”

Section: Introductionmentioning

confidence: 99%

Direct transformation of ethanol to ethyl acetate on Cu/ZrO2 catalyst

Wang

Zhu

Dong

et al. 2010

Reac Kinet Mech Cat

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The reaction of direct transformation of ethanol to ethyl acetate was investigated on reduced Cu/ZrO 2 catalysts prepared by a co-precipitation procedure. The catalytic performances of these Cu-Zr mixed oxides were considerably influenced by changing the molar ratio of Cu to Zr. The highest selectivity to ethyl acetate was found over Cu/ZrO 2 (1) catalyst (molar ratio of Cu to Zr was 1). A variety of characterization techniques, such as N 2 adsorption, XRD, XPS, TPR and NH 3 -TPD were carried out on the catalysts. The results revealed that the presence of a certain amount of Cu ? species may play very important role in improving the selectivity to ethyl acetate of the Cu/ZrO 2 catalysts.

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Section: Introductionmentioning

confidence: 99%

Direct transformation of ethanol to ethyl acetate on Cu/ZrO2 catalyst

Wang

Zhu

Dong

et al. 2010

Reac Kinet Mech Cat

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“…Understanding the local structure of CuO-ZrO 2 catalysts, interaction between active metal oxide and support and the factors that determine the formation of the active phase are the important aspects in the development of ZrO 2 based catalysts for heterogeneous catalytic applications [7]. The nature of interactions between active phase and ZrO 2 support has been extensively studied in the literature [8][9][10], this is mainly because of the properties of metal oxide supported ZrO 2 catalysts: they often show different catalytic properties compared to those of the corresponding bulk metal oxides due to the interaction between metal oxide and support. It was also shown that the ZrO 2 phases influence the catalytic performance.…”

Section: Introductionmentioning

confidence: 99%

Physico-Chemical and Catalytic Properties of Mesoporous CuO-ZrO2 Catalysts

et al. 2016

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Mesoporous CuO-ZrO 2 catalysts were prepared and calcined at 500˝C. The performance of the synthesized catalysts for benzylation of benzene using benzyl chloride was studied. The bare support (macroporous ZrO 2 ) offered 45% benzyl chloride conversion after reaction time of 10 h at 75˝C. Significant increase in benzyl chloride conversion (98%) was observed after CuO loading (10 wt. %) on porous ZrO 2 support. The conversion was decreased to 80% with increase of CuO loading to 20 wt. %. Different characterization techniques (XRD, Raman, diffuse reflectance UV-vis, N 2 -physisorption, H 2 -TPR, XPS and acidity measurements) were used to evaluate physico-chemical properties of CuO-ZrO 2 catalysts; the results showed that the surface and structural characteristics of the ZrO 2 phase as well as the interaction between CuO-ZrO 2 species depend strongly on the CuO content. The results also indicated that ZrO 2 support was comprised of monoclinic and tetragonal phases with macropores. An increase of the volume of monoclinic ZrO 2 phase was observed after impregnation of 10 wt. % of CuO; however, stabilization of tetragonal ZrO 2 phase was noticed after loading of 20 wt. % CuO. The presence of low-angle XRD peaks indicates that mesoscopic order is preserved in the calcined CuO-ZrO 2 catalysts. XRD reflections due to CuO phase were not observed in case of 10 wt. % CuO supported ZrO 2 sample; in contrast, the presence of crystalline CuO phase was observed in 20 wt. % CuO supported ZrO 2 sample. The mesoporous 10 wt. % CuO supported ZrO 2 catalyst showed stable catalytic activity for several reaction cycles. The observed high catalytic activity of this catalyst could be attributed to the presence of a higher number of dispersed interactive CuO (Cu 2+ -O-Zr 4+ ) species, easy reducibility, and greater degree of accessible surface Lewis acid sites.

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“…The interest in the production of polyethylene using ethane obtained from ethanol dehydration is a good example of this [16]. A further possibility is the obtention of ethyl acetate from ethanol in a single stage [20].…”

Section: Billion Liters In the Us And 203 Billion Liters In Brazilmentioning

confidence: 99%

Ethanol: An Evaluation of its Scientific and Technological Development and Network of Players During the Period of 1995 to 2009

Perrone¹,

Appel²,

Lellis³

et al. 2010

Waste Biomass Valor

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Ethanol is being considered worldwide as a promising fuel and the reasons are twofold: a substantial rise in the price of oil and environmental, social and geographic issues. This study aims to present a scientific and technological evaluation of ethanol development during the period of 1995-2009. The scientific data was collected and processed using statistic tools available at the Web of Science Ò . Research on patents was made on Esp@cenet-the European Patent Office, and the results were processed using the Matheo Patent Analyzer program. The US and Brazil are the two largest world producers and therefore, corn and sugarcane are the most used feedstocks. There has been a significant increase in the number of scientific publications and patents since 1995. However, since 2001 this growth has skyrocketed, with an almost ten-fold increase in the number of scientific publications and a fivefold increase in the number of patents. When different raw materials for fuel ethanol production were evaluated, it was found that the greatest interest lay in the use of wood residues, corn (stover) and sugarcane (bagasse), demonstrating that there is a strong interest in second generation ethanol, i.e., cellulosic ethanol. The evaluation of patent documents showed that most of the applicants (88%) are of two kinds: biotechnology companies and companies that produce enzymes, corroborating the scientific consensus that the enzymatic hydrolysis step and the fermentation process (hexoses and pentoses) are the two bottlenecks to the development of cellulosic ethanol technology.

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Chemicals from ethanol—The ethyl acetate one-pot synthesis

Cited by 54 publications

References 26 publications

Direct transformation of ethanol to ethyl acetate on Cu/ZrO2 catalyst

Direct transformation of ethanol to ethyl acetate on Cu/ZrO2 catalyst

Physico-Chemical and Catalytic Properties of Mesoporous CuO-ZrO2 Catalysts

Ethanol: An Evaluation of its Scientific and Technological Development and Network of Players During the Period of 1995 to 2009

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