Integrated Catalytic Conversion of γ-Valerolactone to Liquid Alkenes for Transportation Fuels

Bond, Jesse Q.; Alonso, David Martín; Wang, Dong; West, Ryan; Dumesic, James A.

doi:10.1126/science.1184362

Cited by 1,029 publications

(673 citation statements)

References 23 publications

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“…The results obtained in the hydrogenation of 2-cyclohexen-1-one (I) spurred us to investigate the activity of this new catalytic system in the hydrogenation of furfural (FAL) (V) as the design of novel and ecofriendly catalysts, at low cost, for the efficient transformation of natural resources or biomass-derived platform chemicals is a very promising approach [27][28][29]. Lignocellulose is a potential sustainable and renewable organic carbon source and in particular FAL is a promising building block for fuels and chemicals.…”

Section: Scheme 1 Hydrogenation Of 2-cyclohexen-1-one (I)mentioning

confidence: 99%

Aqueous-phase hydrogenation and hydroformylation reactions catalyzed by a new water-soluble [rhodium]–thioligand complex

Paganelli

Piccolo²,

Pontini

et al. 2015

Catalysis Today

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a b s t r a c tRh(DHTANa) is a new water-soluble catalyst easily obtained by mixing in water the catalytic precursor [Rh(COD)Cl] 2 and the dihydrothioctic acid sodium salt (DHTANa). This catalyst showed to be very active in the hydrogenation of unsaturated substrates as 2-cyclohexen-1-one, the biomass-derived furfural and acetophenone. In this last case the catalytic system obtained by using as water-soluble ligand (R)-(DHTANa) afforded (R)-1-phenylethanol with very modest enantioselectivity. Rh(DHTANa) was active also in the aqueous biphase hydroformylation of styrene producing exclusively the two corresponding aldehydes with 80-86% selectivity toward the branched aldehyde 2-phenylpropanal. This new catalytic system was easily recycled in both hydrogenation and hydroformylation processes and no leaching phenomenon was observed.

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Section: Scheme 1 Hydrogenation Of 2-cyclohexen-1-one (I)mentioning

confidence: 99%

Aqueous-phase hydrogenation and hydroformylation reactions catalyzed by a new water-soluble [rhodium]–thioligand complex

Paganelli

Piccolo²,

Pontini

et al. 2015

Catalysis Today

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show abstract

“…14,15 As the product of the simultaneous hydrogenation of the carbonyl and carboxyl groups in levulinic acid, 1,4-pentanediol can be used as a potential monomer for the production of polyesters. 4,16 However, due to the preferable intermolecular esterification, most 40 of research about the hydrogenation of levulinic acid were focused on its conversion to γ-valerolactone (GVL) 16,17 which can be used as fuel additive or feedstock for the bio-jet fuels 18 .…”

mentioning

confidence: 99%

Reduced Carbon Dots versus Oxidized Carbon Dots: Photo‐ and Electrochemiluminescence Investigations for Selected Applications

Feng

et al. 2013

Chemistry A European J

142

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The study of the composition, morphology, and surface structure of carbon dots (Cdots) is critical to understanding their effect on the photo‐ and electrochemiluminescence (PL and ECL) of Cdots in selected applications. Herein, two kinds of Cdots were prepared with 3‐(3,4‐dihydroxyphenyl)‐L‐alanine (L‐DOPA) as precursor. The Cdots prepared by using a carbonization‐extraction strategy have a low oxidation level and are denoted as reduced Cdots (r‐Cdots). The Cdots obtained with a carbonization‐oxidation process are highly oxidized and are denoted as oxidized Cdots (o‐Cdots). The o‐Cdots have a carbon core and oxygen‐containing loose shell, but the r‐Cdots consist mainly of the carbon core. Whereas r‐Cdots have a strong blue PL but no apparent ECL response, o‐Cdots exhibit a relatively weak PL and strong ECL emission. These properties allow for selected applications of the Cdots. The r‐Cdots were used in cell imaging with their high PL emission. The o‐Cdots, with their high ECL efficiencies, were selected to sense Cu2+ with Cu2+‐inducing ECL quenching in the o‐Cdots/K2S2O8 system. This work provides the possibility to control the composition of Cdots for selected applications and shows a good way to characterize surface traps of Cdots because ECL is characterized by the surface‐state and PL is mainly related to the core‐state in Cdots.

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“…Duas publicações recentes por Bond et al 110 e Lange et al 111 sugerem que o ácido levulínico derivado por desidratação de glicose pode ser intermediário em processos de conversão catalítica para gerar ésteres do ácido valérico. 112 A transformação da γ-valerolactona na presença de Pb/Nb 2 O 6 gera como intermediários alquenos que sofrem posterior oligomerização para formar alcanos C 9 -C 16 com potencial de serem empregados como combustíveis líquidos tipo diesel.…”

Section: Figura 11 Representação Esquemática Simplificada Do Metabolunclassified

Do engenho à biorrefinaria: a usina de açúcar como empreendimento industrial para a geração de produtos bioquímicos e biocombustíveis

Rodrigues¹

2011

Quím. Nova

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Recebido em 1/11/10; aceito em 16/2/11; publicado na web em 5/5/11 FROM THE MILL TO A BIOREFINERY. THE SUGAR FACTORY AS AN INDUSTRIAL ENTERPRISE FOR THE GENERATION OF BIOCHEMICALS AND BIOFUELS. A sugar cane mill is at the present moment a modest biorefinery producing few products such as sugar, ethanol and polyhydroxybutyrate (PHB). In the near future, this mill can expand its production using several renewable feedstock's to produce biofuels and high value biobased chemicals. However, the choice of appropriate products for addition to the portfolio is challenged by a lack of broad-based conversion technology coupled with a plethora of potential targets. The intent of this revision was to catalyze research efforts to expand the list of products and to present an updated evaluation of potential target structures for chemical production.Keywords: biorefinery; biotechonology; sustainable chemistry. INTRODUÇÃONo início o engenho brasileiro produzia apenas açúcar mascavo, tendo como subproduto a cachaça. Nestes cinco séculos, este pequeno empreendimento rural evoluiu para usinas de açúcar e álcool produzindo diversas nomenclaturas de açúcar, demerara, cristal, refinado e "orgânico", além do polímero PHB (poli-hidroxibutirato) e de energia elétrica. O engenho ainda continua operando, agora gerando a cachaça artesanal, sendo que os maiores fazem a água ardente, a terceira bebida destilada mais consumida no planeta. Nesta resenha, avalia-se qual será a evolução que pode ser esperada para a usina de açúcar e álcool como um empreendimento industrial para geração de produtos químicos.Desde a época do descobrimento, o açúcar tem sido fundamental para a economia do Brasil, naquela época o produto mundial manufaturado mais valioso. 1 O PIB do setor sucroenergético foi de US$ 28.2 bilhões, equivalente a quase 2% do PIB brasileiro (taxa de câmbio de R$ 1,84 por dólar, a média de 2008). 2 Os principais produtos do setor no mercado interno e externo foram: etanol hidratado, etanol anidro, etanol não-combustível, açúcar, bioeletricidade, levedura e crédito de carbono. A safra 2008/09 de cana-de-açúcar, de 568,9 milhões de toneladas foi cultivada em área plantada de 8,5 milhões de hectares. Nos melhores cultivos da região Centro-Sul brasileira, a produtividade foi da ordem de 85 toneladas de cana por hectare. 3 A matriz energética brasileira, que se destaca pela grande incidência de fontes renováveis, passou por transformações que a colocaram entre as mais limpas do mundo. Nesta década, caracterizada pela introdução dos carros flexíveis, a participação do petróleo e derivados na matriz diminuiu cerca de 8 pontos percentuais: passou de 45,5% em 2000 para 37,9% em 2009. Ao fim desse período, cerca de 18% da energia consumida no país já provinha de derivados da cana-deaçúcar, ultrapassando a energia hidráulica em importância na matriz e assumindo o segundo lugar. 4 A cadeia sucroenergética vem mostrando seu potencial de suprir produtos de maneira sustentável, o que contribui para que o Brasil tenha uma excelente imagem de produtor de ...

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Integrated Catalytic Conversion of γ-Valerolactone to Liquid Alkenes for Transportation Fuels

Cited by 1,029 publications

References 23 publications

Aqueous-phase hydrogenation and hydroformylation reactions catalyzed by a new water-soluble [rhodium]–thioligand complex

Aqueous-phase hydrogenation and hydroformylation reactions catalyzed by a new water-soluble [rhodium]–thioligand complex

Reduced Carbon Dots versus Oxidized Carbon Dots: Photo‐ and Electrochemiluminescence Investigations for Selected Applications

Do engenho à biorrefinaria: a usina de açúcar como empreendimento industrial para a geração de produtos bioquímicos e biocombustíveis

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