Preparation of nano-sized HZSM-5 zeolite with sodium alginate for glycerol aromatization

Xu, Ningning; Pan, Donghui; Wu, Yuanfeng; Xu, Shimei; Gao, Lijing; Zhang, Jin; Xiao, Guomin

doi:10.1007/s11144-019-01566-0

Cited by 18 publications

(8 citation statements)

References 37 publications

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“…Several studies on the catalytic conversion of glycerol over H-ZSM-5-based catalysts in continuous fixed-bed reactors [6][7][8][9][10][11][12][13] have shown a BTX carbon yield of at max 28.1 ± 0.2 C.% when using an un-modified H-ZSM-5 zeolite catalyst 6 . Such catalysts often show a rather short catalyst life-time (5 -19 h) due to coke formation 6,7,14,15 and thus require frequent catalyst regeneration by an oxidative treatment.…”

Section: Introductionmentioning

confidence: 99%

“…Such catalysts often show a rather short catalyst life-time (5 -19 h) due to coke formation 6,7,14,15 and thus require frequent catalyst regeneration by an oxidative treatment. However, a few studies on reaction-regeneration cycles 6,9,10,12,15,16 have shown that also irreversible deactivation of the catalyst occurs, lowering the catalyst performance for the regenerated catalysts.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Catalytic conversion of glycerol and co-feeds (fatty acids, alcohols, and alkanes) to bio-based aromatics: remarkable and unprecedented synergetic effects on catalyst performance

Kramer

Santosa

et al. 2022

Green Chem.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Catalytic conversion of glycerol and co-feeds (fatty acids, alcohols, and alkanes) to bio-based aromatics: remarkable and unprecedented synergetic effects on catalyst performance

Kramer

Santosa

et al. 2022

Green Chem.

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“…In terms of silicon sources, ZSM-5 was mostly synthesized from chemical silicon sources, such as tetraethyl orthosilicate. 5 To reduce the synthesis cost and protect the environment, it was found that kaolin 6−9 and rice husk 10 in the waste are rich in silicon, and the calcined rice husk ash (RHA) is rich in SiO 2 . Due to the low packing density of RHA, disposal in landfills or open spaces may cause serious problems related to the environment and human health.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Template-Free ZSM-5 from Rice Husk Ash at Low Temperatures and Its CO₂ Adsorption Performance

Fang

et al. 2021

ACS Omega

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In this paper, a green synthesis method for ZSM-5 zeolite is explored to reduce the synthesis cost, environmental hazard, and reaction temperatures. For the ZSM-5 samples prepared at low temperatures, the influence of factors such as the hydrothermal temperature, crystallization time, and the number of seeds is systematically investigated. The adsorption isotherm of CO 2 is used for fitting analysis of adsorption models and determination of the adsorption selectivity. The results show that the best one among the three samples presents the highest CO 2 adsorption capacity of 2.39 mmol/g at 273 K and 15 bar. It is prepared with a hydrothermal temperature of 393 K, crystallization time of 7 days, and a seed crystal of 1 wt %. The dual-site Langmuir model can well describe the experimental data, indicating that double adsorption sites rather than the simple single-layer adsorption are dominant in samples. As the pressure increases, the adsorption capacity calculated by the model is much lower than the actual value with a deviation index of 12.5%. At a pressure of 1 bar, the optimal selectivity is attained with sample L-20, viz., CO 2 /N 2 of 34.3 and CO 2 /O 2 of 70.2. The green synthesis method reported in this research can be used to successfully prepare ZSM-5 zeolite, and it shows excellent CO 2 adsorption performance. In addition, the use of low-cost raw materials and template-free synthesis methods will facilitate the large-scale application of green synthesis processes in the future.

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“…A utilização das zeólitas hierarquizadas, através do tratamento alcalino na desidratação de glicerol em acetol e/ou Introdução O elevado aumento da produção de biodiesel a partir de óleos vegetais e/ou gordura animal ocasionou a saturação do mercado de glicerol, causando a queda no seu preço e o desafio ambiental de armazenar esse subproduto. Cerca de 10 % em peso da produção total do biodiesel é referente à produção de glicerol, tornando um obstáculo na cadeia de produção de biodiesel (SUN et al, 2017;MONTEIRO, et al, 2018;XU, et al, 2019).…”

Section: Introductionunclassified

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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Preparation of nano-sized HZSM-5 zeolite with sodium alginate for glycerol aromatization

Cited by 18 publications

References 37 publications

Catalytic conversion of glycerol and co-feeds (fatty acids, alcohols, and alkanes) to bio-based aromatics: remarkable and unprecedented synergetic effects on catalyst performance

Catalytic conversion of glycerol and co-feeds (fatty acids, alcohols, and alkanes) to bio-based aromatics: remarkable and unprecedented synergetic effects on catalyst performance

Synthesis of Template-Free ZSM-5 from Rice Husk Ash at Low Temperatures and Its CO₂ Adsorption Performance

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

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Preparation of nano-sized HZSM-5 zeolite with sodium alginate for glycerol aromatization

Cited by 18 publications

References 37 publications

Catalytic conversion of glycerol and co-feeds (fatty acids, alcohols, and alkanes) to bio-based aromatics: remarkable and unprecedented synergetic effects on catalyst performance

Catalytic conversion of glycerol and co-feeds (fatty acids, alcohols, and alkanes) to bio-based aromatics: remarkable and unprecedented synergetic effects on catalyst performance

Synthesis of Template-Free ZSM-5 from Rice Husk Ash at Low Temperatures and Its CO2 Adsorption Performance

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

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Synthesis of Template-Free ZSM-5 from Rice Husk Ash at Low Temperatures and Its CO₂ Adsorption Performance