Sustainable conversion of biodiesel-waste glycerol to acrolein over Pd-modified mesoporous catalysts

Pothu, Ramyakrishna; Mameda, Naresh; Boddula, Rajender; Mitta, Harisekhar; Perupogu, Vijayanand; Al‐Qahtani, Noora

doi:10.1016/j.mset.2022.12.012

Cited by 8 publications

(3 citation statements)

References 43 publications

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“…The conversion of GL increased with the raise in temperature as well as the acid sites concentration, leading Acr in 95 % yield at 573 K [224] . Even Pd and PdO nanoparticles (3.8 nm) supported on SBA‐15 were able to dehydrate GL to Acr (64 % selectivity with 90 % conversion) at 593 K and 2 bar in a continuous fixed‐bed reactor [225] . The activity of the catalyst was maintained up to 20 h and after, gradually, its catalytic sites were deactivated by metal sintering and carbon depositions.…”

Section: Late Transition Metalsmentioning

confidence: 99%

Transition Metal Catalysts for the Glycerol Reduction: Recent Advances

Coccia,

d'Alessandro,

Mascitti

et al. 2024

ChemCatChem

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Glycerol (GL) represents a widespread agro‐industrial waste. Its valorization is pivotal for a sustainable society because GL is a renewable compound deriving from biomass, but it has a high oxygen to carbon ratio, compared with feedstock used in the energy and chemistry sectors. Oxygen‐poor derivatives are easily and immediately transferable to the industry, avoiding a deep and pressing modification of the plants. From this perspective, keeping the carbon content but with an oxygen content reduction, we could effectively obtain the enhancement of the recovery and the use of GL converting it into attractive industrial building‐blocks. In this Review, we present and discuss the up‐to‐date results about the chemical reduction of GL into products with 3 carbon and 0, 1, or 2 oxygen atoms. The focus is on the transition metal (TM) catalysts that have made the hydrogenation reactions of GL possible, partitioning the metals into early and late, based on their position in the periodic table. This discussion will contribute to select and develop new catalysts aimed at the improvement of the yield and of the selectivity in the hydrogenation reactions of GL.

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Section: Late Transition Metalsmentioning

confidence: 99%

Transition Metal Catalysts for the Glycerol Reduction: Recent Advances

Coccia,

d'Alessandro,

Mascitti

et al. 2024

ChemCatChem

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“…In recent years, the search for sustainable alternatives to fossil fuels and petrochemicalbased products has gained significant momentum. Biomass, an abundant and renewable resource, has emerged as a promising feedstock for the production of various chemicals and fuels [1][2][3][4][5]. Among the many biomass-derived compounds, levulinic acid (LA) has garnered attention due to its versatile nature and potential applications [6].…”

Section: Introductionmentioning

confidence: 99%

Catalytic Valorisation of Biomass-Derived Levulinic Acid to Biofuel Additive γ-Valerolactone: Influence of Copper Loading on Silica Support

Boddula,

Shanmugam,

Srivatsava

et al. 2023

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γ-valerolactone (GVL) is a crucial chemical feedstock used in the production of fuel additives, renewable fuels, and fine chemicals alternative to petroleum-based solvents and chemicals, supporting the transition to sustainable energy solutions. It is promptly acquired by hydrogenating levulinic acid (LA) in a gaseous or liquid phase with a homogeneous or heterogeneous catalyst using a variety of recognized catalytic processes. Herein, this work focuses on the use of silica-supported copper (Cu/SiO2) catalysts for the gas-phase hydrogenation of LA to GVL under mild reaction conditions. The study analyzes how copper loading can affect the catalytic activity of the Cu/SiO2, while the flow rate of LA, time-on-stream, reaction temperature, and LA concentration affect the catalytic efficiency. The SiO2 support’s various Cu loadings are crucial for adjusting the catalytic hydrogenation activity. One of the studied catalysts, a 5 wt% Cu/SiO2 catalyst, demonstrated ~81% GVL selectivity with ~78% LA conversion and demonstrated stability for ~8 h while operating at atmospheric pressure and temperature (265 °C) and 0.5 mL/h of LA flow rate. The ability to activate hydrogen, high amount of acidic sites, and surface area were all discovered to be advantageous for increased GVL selectivity.

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“…Hence, numerous research and industrial efforts are focused on developing ways to utilize and purify the generated glycerol, as well as exploring various applications for glycerol to prevent it from becoming waste. These reasons have drawn the attention of researchers to develop technologies to utilize glycerol, including its conversion into valuable energy products [14], [28]- [30].…”

Section: Introductionmentioning

confidence: 99%

Purifying Crude Glycerol from Biodiesel Production for Sustainable Energy Solutions

Rahman

2023

JTek

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Biodiesel production has been an important part of a global effort to replace fossil fuels with renewable energy sources. However, one of the problems facing biodiesel production is increased production of glycerol as a by-product. Glycerol, or crude glycerol (CG), is generally produced in significant quantities and needs to be managed wisely. This article discusses the potential use of glycerol from biodiesel production as a raw material for bioethanol production. By optimizing fermentation processes, genetic engineering technology, and purification, glycerol can be converted into bioethanol, one of the more environmentally friendly renewable fuels. The success of the conversion of glycerol to bioethanol is also supported by advances in genetic engineering technology that enable the development of more efficient and productive microorganisms. This creates great opportunities to reduce waste, support resource sustainability, and reduce dependence on fossil fuels through the use of glycerol as a bioethanol raw material. Conversion of glycerol to bioethanol is a step towards more sustainable and environmentally friendly renewable energy.

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Sustainable conversion of biodiesel-waste glycerol to acrolein over Pd-modified mesoporous catalysts

Cited by 8 publications

References 43 publications

Transition Metal Catalysts for the Glycerol Reduction: Recent Advances

Transition Metal Catalysts for the Glycerol Reduction: Recent Advances

Catalytic Valorisation of Biomass-Derived Levulinic Acid to Biofuel Additive γ-Valerolactone: Influence of Copper Loading on Silica Support

Purifying Crude Glycerol from Biodiesel Production for Sustainable Energy Solutions

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