Renewable Raw Materials in Europe ??-?? Industrial Utilisation of Starch and Sugar [1]

Röper, Harald

doi:10.1002/1521-379x(200204)54:3/4<89::aid-star89>3.0.co;2-i

Cited by 157 publications

(62 citation statements)

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“…75% belongs to the class of carbohydrates, and just 3-4% of these compounds are used by humans for food and nonfood purposes. 2 Ethanol, ethyl lactate and g-valerolactone are three examples of eco-solvents derived from carbohydrates (sugars). Capello et al 3 tried to give a definition of green solvents.…”

Section: Introductionmentioning

confidence: 99%

Eco-solvents – cluster-formation, surfactantless microemulsions and facilitated hydrotropy

Klossek

Touraud

Kunz

2013

Phys. Chem. Chem. Phys.

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In this paper we consider clusters in the ternary systems water-benzyl alcohol and ethanol, ethyl lactate or g-valerolactone as found with the help of dynamic and static light scattering experiments. These ternary mixtures are powerful solvent media and consist only of low-toxic solvents of natural origin. In a recent work we have shown that surfactantless microemulsions are formed in the water-ethanol-noctanol system. By contrast, in the systems studied here the sizes of the aggregates are too small to be considered as micelles. It can be postulated that the presence of clusters or larger structures as in surfactantless microemulsions is strongly influenced by the most hydrophobic compound. The phenomenon of facilitated hydrotropy is also investigated in the above-mentioned systems. In this context, ethanol is considered as the primary hydrotrope and the more hydrophobic benzyl alcohol as the facilitating secondary hydrotrope. The hydrophobic dye Disperse Red 13 is used as a marker of facilitated hydrotropy.The results suggest that the degree of self-association of eco-solvent has a significant influence on the hydrotropic efficiency of benzyl alcohol.

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Section: Introductionmentioning

confidence: 99%

Eco-solvents – cluster-formation, surfactantless microemulsions and facilitated hydrotropy

Klossek

Touraud

Kunz

2013

Phys. Chem. Chem. Phys.

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“…49,50 Cabe ressaltar que o composto obtido em maior quantidade a partir da sacarose é o etanol, que não se enquadra dentro dessa classificação de compostos químicos úteis para a indústria de Química, a não ser como solvente verde para reações, mas ele per se constitui uma cadeia de outros compostos químicos e intermediários para polímeros. 51 Como se pode denotar do pequeno resumo esquemático mostrado na Figura 7, diversos blocos de construção propostos podem ser obtidos a partir da sacarose, como os ácidos succínico, málico, fumárico, 2,5-furano dicarboxílico, 3-hidroxi-propiônico, aspártico, glucárico, glutâmico, itacônico, levulínico e ainda o 3-hidroxibutirolactona glicerol, o sorbitol e o xilitol/arabinitol, além de outros ácidos carboxílicos, incluindo aminoácidos importantes tanto para a alimentação como para outras transformações de interesse das indústrias de química fina.…”

Section: Discussionunclassified

Carboidratos como fonte de compostos para a indústria de química fina

Ferreira¹,

Silva²,

Ferreira³

2013

Quím. Nova

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Recebido em 4/7/13; aceito em 10/10/13; publicado na web em 24/10/13 CARBOHYDRATES AS A SOURCE OF COMPOUNDS FOR FINE CHEMICAL INDUSTRY. Coal, oil, natural gas, and shale gas are biomass that is formed millions of years ago. These are non-renewable and depleting, even considering the recent discovery of new sources of oil in the presalt and new technologies for the exploitation of shale deposits. Currently, these raw materials are used as a source of energy production and are also important for the production of fine chemicals. Since these materials are finite and their (oil) price is increasing, it is clear that there will be a progressive increase in the chemical industry to use renewable raw materials as a source of energy, an inevitable necessity for humanity. The major challenge for the society in the twenty first century is to unite governments, universities, research centers, and corporations to jointly act in all areas of science with one goal of finding a solution to global problems, such as conversion of biomass into compounds for the fine chemical industry.Non-renewable raw materials are used in the preparation of fuels, chemical intermediates, and derivatives for the fine chemical industry. However, their stock in nature has a finite duration, and their price is high and will likely increase with their depletion. In this scenario, the alternative is to use renewable biomass as a replacement for petrochemicals in the production of fine chemicals. As the production of biomass-based carbohydrates is the most abundant in nature, it is judicious to develop technologies for the generation of chain products (fuels, chemical intermediates, and derivatives for the fine chemicals industry) using this raw material. This paper presents some aspects and opportunities in the area of carbohydrate chemistry toward the generation of compounds for the fine chemical industry.Keywords: fine chemicals; chains fine chemical from carbohydrates; renewable biomasses. INTRODUÇÃOA compreensão humana sobre a natureza e a vida é baseada em nosso conhecimento da química, pois, em realidade, todos os processos da vida são controlados por reações químicas.Há vários problemas globais 1,2 em que a química pode ser o elemento chave de sua solução e, desta forma, promover o avanço social e econômico dos países em um mundo sem fronteiras. A saber: 1. biodiversidade e conversão de biomassa em matérias-primas; 2. fontes alternativas de energia limpa e renovável; 3. produção sustentável de fármacos; 4. a produtividade agrícola para alimentar o crescimento populacional; 5. qualidade da água para uso humano; 6. materiais reclicáveis e pouco persistentes; 7. nível dióxido de carbono e seu aproveitamento; 8. risco de desaparecimento de alguns elementos químicos por dispersão; 9. nanotecnologia e nanotoxicologia; 10. educação em todos níveis e em especial em química e; 11. responsabilidade social da química.O grande desafio da sociedade no século XXI é unir governos, universidades, centros de pesquisa e corporações para que atuem conjuntamente e...

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“…Approximately 75% of the biomass produced by Nature through the process of photosynthesis corresponds to carbohydrates, but only between 3-4% of these compounds are used for food and non-food purposes [6]. Therefore the use of carbohydrates as raw materials for the production of basic chemicals is an area of increasing interests [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

A Chalcone‐Based Highly Selective and Sensitive Chromofluorogenic Probe for Trivalent Metal Cations

et al. 2015

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ElsevierCliment Olmedo, MJ.; Corma Canós, A.; Hernández, JC.; Hungría, AB.; Iborra Chornet, S.; Martínez Silvestre, S. (2012). Biomass into chemicals: One-pot two-and three-step synthesis of quinoxalines from biomass-derived glycols and 1,2-dinitrobenzene derivatives using supported gold nanoparticles as catalysts. AbstractAn efficient and selective one-pot two steps, method for the synthesis of quinoxalines by oxidative coupling of vicinal diols with 1,2-phenylenediamine derivatives, has been developed by using gold nanoparticles supported on nanoparticulated ceria (Au/CeO 2 ) or hydrotalcite (Au/HT) as catalysts and air as oxidant, in absence of any homogeneous base. Reaction kinetics shows that the reaction controlling step is the oxidation of the diol to α-hydroxycarbonyl compound.Furthermore, a one-pot three steps synthesis of 2-methylquinoxaline starting from 1,2-dinitrobenzene and 1,2-propanediol has been successfully carried out with 98% conversion and 83% global yield to the final product.

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Renewable Raw Materials in Europe ??-?? Industrial Utilisation of Starch and Sugar [1]

Cited by 157 publications

References 0 publications

Eco-solvents – cluster-formation, surfactantless microemulsions and facilitated hydrotropy

Eco-solvents – cluster-formation, surfactantless microemulsions and facilitated hydrotropy

Carboidratos como fonte de compostos para a indústria de química fina

A Chalcone‐Based Highly Selective and Sensitive Chromofluorogenic Probe for Trivalent Metal Cations

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