Glycerol dehydration over micro- and mesoporous ZSM-5 synthesized from a one-step method

Neves, Thaís Martins; Fernandes, Juliana Oliveira; Lião, Luciano M.; Silva, Edilene Deise da; Rosa, Claudio; Mortola, Vanessa Bongalhardo

doi:10.1016/j.micromeso.2018.09.006

Cited by 33 publications

(17 citation statements)

References 50 publications

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“…Provision of glycerol ethers from the reaction between glycerol and isobutene with different molar ratios. Ishak et al, 2016;Kim et al, 2007;Klepacova et al, 2007;Li & Zhang, 2016;Neves et al, 2018;Noureddini, 2001;Okoye et al, 2017;Vlad et al, 2011;Yun et al, 2016). Glycerol acetyls and glycerol ethers are known as fuel additives (Bozkurt, Yılmaz, et al 2019;Ishak et al, 2016;Kim et al, 2007).…”

Section: Glycerol Etherification (Ge)mentioning

confidence: 99%

Different scenarios of glycerin conversion to combustible products and their effects on compression ignition engine as fuel additive: a review

Shoar

Najafi

Band

et al. 2021

Engineering Applications of Computational Fluid Mechanics

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Section: Glycerol Etherification (Ge)mentioning

confidence: 99%

Different scenarios of glycerin conversion to combustible products and their effects on compression ignition engine as fuel additive: a review

Shoar

Najafi

Band

et al. 2021

Engineering Applications of Computational Fluid Mechanics

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“…Assim, a acidez e a porosidade da zeólita são as propriedades que mais influencia na desidratação de glicerol. As zeólitas puramente microporosas, apresentam resistência à difusão de moléculas em seus microporos, o que pode levar à desativação desse catalisador (NEVES et al, 2019;ZHAO et al, 2020).…”

Section: Conversão Do Glicerol Em Produtos Químicos De Maior Valor Agregadounclassified

Valorização do glicerol através da desidratação em acetol e acroleína empregando zeólitas hierarquizadas por tratamento alcalino: uma revisão: desidratação do glicerol em acetol e acroleína por zeólitas hierarquizadas

Oliveira

Gondim

Caldeira

et al. 2021

PERSP

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O aumento na produção de biodiesel levou a um excesso de glicerol bruto como subproduto, tornando um obstáculo na cadeia de produção de biodiesel, o que criou novos desafios para seu uso sustentável. Portanto, a conversão de glicerol em produtos químicos de maior valor agregado deve ser estudada para melhorar a viabilidade econômica da indústria de biodiesel e valorizar o glicerol. Este artigo traz uma revisão sobre a importância e a necessidade da valorização do glicerol produzido a partir do biodiesel, apresentando os possíveis desafios e oportunidades da desidratação de glicerol em acetol e acroleína, e o desempenho das zeólitas hierarquizadas através de tratamento alcalino na aplicação dessa reação. A desidratação de glicerol é bastante promissora devido ao alto valor do acetol e da acroleína, no mercado, e também por esses produtos serem intermediários químicos para produção de outros produtos de valor agregado. A utilização das zeólitas hierarquizadas, através do tratamento alcalino na desidratação de glicerol em acetol e/ou acroleína, tem chamado grande atenção devido à melhoria da atividade catalítica, redução das limitações difusionas e aumento da vida útil do catalisador. Contudo, a relação entre a mesoporosidade e o desempenho catalítico ainda precisa ser bastante explorado.

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“…As byproducts of the biodiesel and coal chemical industry, low-value polyols (especially glycerol) have been oversupplied to the market. , Polyol workup for the production of value-added chemicals has therefore attracted much attention. − The triple hydroxyl functional groups in glycerol render it a potential platform chemical for the synthesis of a variety of valuable chemicals, including glycolic acid, dihydroxyacetone, hydroxyacetone, and acetone. − Several catalytic conversion pathways of glycerol have been investigated, including oxidation, , hydrogenolysis, dehydration, , and dehydrogenation. , However, these processes in general require considerable energy input and expensive catalysts and are operated under elevated pressure and temperature.…”

Section: Introductionmentioning

confidence: 99%

Effect of Pd and Au on Hydrogen Abstraction and C–C Cleavage in Photoconversion of Glycerol: Beyond Charge Separation

Lei

Zhang

et al. 2020

J. Phys. Chem. C

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Photocatalytic conversion of polyols to value-added products is of great interest for the utilization of biomass as a chemical feedstock. Current research focuses on boosting the reaction rate and selectivity by employing metal nanoparticles (NPs) as charge separators and cocatalysts. However, the promotional role of metal NPs in such photocatalytic processes still remains unclear because of the lack of mechanistic understanding. Here, we have explored the role of supported Pd and Au NPs on TiO 2 in photocatalytic glycerol conversion under water-free, deaerated conditions by in situ spectroscopic methods. While the presence of Au NPs only results in partial conversion of glycerol at a low rate, Pd decoration promotes glycerol oxidation to a much higher conversion. In situ mass and vibrational spectrometry reveals that Pd/TiO 2 exhibits faster cleavage of O−H and C−H bonds in both glycerol and the derived intermediates as compared to Au/TiO 2 , thus leading to a higher glycerol conversion accompanied by the formation of additional molecular hydrogen. X-ray photoelectron spectroscopy suggests that the preferential adsorption of glycerol on the surface of Pd via hydroxyl groups results in an enhanced interfacial charge transfer, thus yielding a better photocatalytic activity.

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Glycerol dehydration over micro- and mesoporous ZSM-5 synthesized from a one-step method

Cited by 33 publications

References 50 publications

Different scenarios of glycerin conversion to combustible products and their effects on compression ignition engine as fuel additive: a review

Different scenarios of glycerin conversion to combustible products and their effects on compression ignition engine as fuel additive: a review

Valorização do glicerol através da desidratação em acetol e acroleína empregando zeólitas hierarquizadas por tratamento alcalino: uma revisão: desidratação do glicerol em acetol e acroleína por zeólitas hierarquizadas

Effect of Pd and Au on Hydrogen Abstraction and C–C Cleavage in Photoconversion of Glycerol: Beyond Charge Separation

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