Niobium oxide catalyst for delignification of switchgrass for fermentable sugar production

Ansanay, Yane; Kolar, Praveen; Sharma-Shivappa, Ratna R.; Ji, Cheng

doi:10.1016/j.indcrop.2013.11.044

Cited by 12 publications

(5 citation statements)

References 59 publications

(49 reference statements)

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“…Mannose is a six-carbon monosaccharide that makes up hemicellulose. Due to its benefits to human health, this sugar has been widely used in the formulations of dietary supplements and drugs [ 128 ]. Proportionally, the amount of mannose in the lignocellulose biomass is small compared to those of other sugars [ 149 ].…”

Section: Conversion Of Plant Biomass Derivatives Over Niobium-contain...mentioning

confidence: 99%

Niobium: The Focus on Catalytic Application in the Conversion of Biomass and Biomass Derivatives

et al. 2023

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The world scenario regarding consumption and demand for products based on fossil fuels has demonstrated the imperative need to develop new technologies capable of using renewable resources. In this context, the use of biomass to obtain chemical intermediates and fuels has emerged as an important area of research in recent years, since it is a renewable source of carbon in great abundance. It has the benefit of not contributing to the additional emission of greenhouse gases since the CO2 released during the energy conversion process is consumed by it through photosynthesis. In the presented review, the authors provide an update of the literature in the field of biomass transformation with the use of niobium-containing catalysts, emphasizing the versatility of niobium compounds for the conversion of different types of biomass.

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Section: Conversion Of Plant Biomass Derivatives Over Niobium-contain...mentioning

confidence: 99%

Niobium: The Focus on Catalytic Application in the Conversion of Biomass and Biomass Derivatives

et al. 2023

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“…Our group at North Carolina State University is also interested in synthesis and testing of solid acid catalysts for biomass processing. In the recent past, we explored niobium and carbon-supported sulfonic acid catalytic pre-treatment of biomasses (Ansanay et al, 2014(Ansanay et al, , 2016 …”

Section: Introductionmentioning

confidence: 99%

Pre-treatment of biomasses using magnetised sulfonic acid catalysts

Ansanay

Kolar

Sharma-Shivappa

et al. 2017

J Agricult Engineer

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There is a significant interest in employing solid acid catalysts for pre-treatment of biomasses for subsequent hydrolysis into sugars, because solid acid catalysts facilitate reusability, high activity, and easier separation. Hence the present research investigated pretreatment of four lignocellulosic biomasses, namely Switchgrass (Panicum virgatum L 'Alamo'), Gamagrass (Tripsacum dactyloides), Miscanthus (Miscanthus × giganteus) and Triticale hay (Triticale hexaploide Lart.) at 90°C for 2 h using three carbon-supported sulfonic acid catalysts. The catalysts were synthesized via impregnating p-Toluenesulfonic acid on carbon (regular) and further impregnated with iron nitrate via two methods to obtain magnetic A and magnetic B catalysts. When tested as pre-treatment agents, a maximum total lignin reduction of 17.73±0.63% was observed for Triticale hay treated with magnetic A catalyst. Furthermore, maximum glucose yield after enzymatic hydrolysis was observed to be 203.47±5.09 mg g -1 (conversion of 65.07±1.63%) from Switchgrass treated with magnetic A catalyst. When reusability of magnetised catalysts were tested, it was observed that magnetic A catalyst was consistent for Gamagrass, Miscanthus × Giganteus and Triticale hay, while magnetic B catalyst was found to maintain consistent yield for switchgrass feedstock. Our results suggested that magnetised solid acid catalyst could pre-treat various biomass stocks and also can potentially reduce the use of harsh chemicals and make bioenergy processes environment friendly.

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“…Conversion to xylose, on the other hand, was below average. In addition, the Nb2O5 catalyst had good reusability, being used in four experiments without significant losses (Ansanay et al, 2014). Given that about 18 -20 % of the total projected cost for the organic production of second-generation ethanol is attributed to the pretreatment stage (Haghighi Mood et al, 2013), the reusability of Nb2O5 has great potential for savings.…”

Section: Second-generation Ethanolmentioning

confidence: 99%

Uso de compostos de nióbio como catalisadores na produção de biocombustíveis: uma revisão

Moreira¹,

Souza²,

Silva³

et al. 2022

J. Eng. Exact Sci.

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A necessidade de substituir combustíveis fósseis por biocombustíveis não é um tema recente na comunidade acadêmica. Pesquisadores estudam e desenvolvem combustíveis alternativos há décadas e, com isso, combustíveis como o biodiesel e o etanol de primeira geração se consolidaram no mercado. No entanto, esses biocombustíveis de primeira geração competem com a indústria de alimentos, o que afeta sua oferta e preço. Por outro lado, os combustíveis de segunda geração são produzidos a partir de biomassa lignocelulósica e resíduos orgânicos de atividades urbanas e agroindustriais, não competindo com a indústria de alimentos. No entanto, a maioria desses processos ainda não é economicamente viável. Duas das principais contribuições para essa inviabilidade são o baixo desempenho dos processos (baixa conversão da matéria-prima e baixa seletividade dos produtos de interesse) e o alto custo dos catalisadores, que muitas vezes são feitos de metais nobres de pouca disponibilidade. O Nióbio é um metal com diversas aplicações, mas ainda pouco explorado industrialmente como catalisador, apesar de possuir propriedades interessantes para essa finalidade. Este artigo de revisão compila trabalhos envolvendo o uso do nióbio e seus compostos como catalisador em diversos processos de produção de biocombustíveis, como esterificação, pirólise, liquefação, síntese Fischer-Tropsch, desoxigenação, entre outros. Além da revisão da literatura, este artigo apresenta uma análise crítica a respeito das aplicações de cada processo e tecnologia, bem como das pesquisas desenvolvidas pelos autores.

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Niobium oxide catalyst for delignification of switchgrass for fermentable sugar production

Cited by 12 publications

References 59 publications

Niobium: The Focus on Catalytic Application in the Conversion of Biomass and Biomass Derivatives

Niobium: The Focus on Catalytic Application in the Conversion of Biomass and Biomass Derivatives

Pre-treatment of biomasses using magnetised sulfonic acid catalysts

Uso de compostos de nióbio como catalisadores na produção de biocombustíveis: uma revisão

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