WITHDRAWN: High-performance magnetic activated carbon from solid waste from lignin conversion processes. Part I: Their use as adsorbents for CO2

Hao, Wenming; Björnerbäck, Fredrik; Trushkina, Yulia; Bengoechea, Mikel Oregui; Salazar-Alvarez, Germán; Barth, Tanja; Hedin, Niklas

doi:10.1016/j.egypro.2017.08.033

Cited by 19 publications

(4 citation statements)

References 59 publications

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“…The isosteric heats of adsorption (Q st ), 37,38 a crucial parameter to describe the interactions between gas molecules and sorbents, is calculated using the Clausius−Clapeyron equation to explain high CO 2 /CO selectivity of C 3 N pores, as shown in Figure 4b and Figure S3. The Q st value of CO 2 adsorption on this adsorbent is about 34−38 kJ/mol, which is higher than that (17−25 kJ/mol) of CO, demonstrating that it interacts more strongly with CO 2 molecules than CO molecules.…”

Section: Resultsmentioning

confidence: 99%

Superior Selective CO₂ Adsorption of C₃N Pores: GCMC and DFT Simulations

Zhu

Xue

et al. 2017

ACS Appl. Mater. Interfaces

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Development of high-performance sorbents is extremely significant for CO capture due to its increasing atmospheric concentration and impact on environmental degradation. In this work, we develop a new model of CN pores based on GCMC calculations to describe its CO adsorption capacity and selectivity. Remarkably, it exhibits an outstanding CO adsorption capacity and selectivity. For example, at 0.15 bar it shows exceptionally high CO uptakes of 3.99 and 2.07 mmol/g with good CO/CO, CO/H, and CO/CH selectivity at 300 and 350 K, separately. More importantly, this adsorbent also shows better water stability. Specifically, its CO uptakes are 3.80 and 5.91 mmol/g for and 0.15 and 1 bar at 300 K with a higher water content. Furthermore, DFT calculations demonstrate that the strong interactions between CN pores and CO molecules contribute to its impressive CO uptake and selectivity, indicating that CN pores can be an extremely promising candidate for CO capture.

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Section: Resultsmentioning

confidence: 99%

Superior Selective CO₂ Adsorption of C₃N Pores: GCMC and DFT Simulations

Zhu

Xue

et al. 2017

ACS Appl. Mater. Interfaces

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“…As adsorption-driven gas separation processes depend on the cyclic regeneration of the adsorbent, ). it is important to study the cyclic adsorption performance of the adsorbents during long-term cyclical operation [48]. e successive adsorption/desorption cycles on HZAC(24) were carried out for nine times, and the results are shown in Figure 7.…”

Section: Cycle Adsorption and Time-dependent Adsorption Capacity Of Cmentioning

confidence: 99%

CH₄/N₂ Adsorptive Separation on Zeolite X/AC Composites

Xue

Cheng

Hao

et al. 2019

Journal of Chemistry

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A series of zeolite X/activated carbon (AC) composites were prepared from the same starting materials at various activation time. The corresponding modified samples were obtained by being treated with diluted NH4Cl solution. The relationship between porosity development, surface properties, and CH4/N2 adsorption performance was investigated. The increase of micropore volume is beneficial to the improvement of CH4 and N2 adsorption capacity, but more sensitive for CH4. In addition, the polar functional groups of zeolite X/AC composites may enhance CH4 adsorption capacity. More importantly, both developing micropore structure and surface modification contributed to enhance the adsorption selectivity αCH4/N2. As the optimum sample of these studies, HZAC(24) showed CH4 adsorption capacity of 17.3 cm3/g and the highest adsorption selectivity αCH4/N2 of 3.4. The CH4 and N2 adsorption isotherms of all samples can be well fitted by the Langmuir–Freundlich model. HZAC(24) showed an excellent cyclability of adsorption/desorption of CH4 with a neglectable capacity loss after subsequent cycles. Moreover, HZAC(24) displayed relatively rapid adsorption kinetics. These properties of zeolite X/AC composites are essential for the adsorptive separation of CH4 from N2 in the pressure swing adsorption (PSA) process.

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“…Yet, lignin is largely underexploited for these purposes, although many scientific studies are conducted to forward these fields [ 25 ]. Moreover, lignin can be used in other industrial applications that can benefit from the good surface activity of lignin [ 26 ], such as adsorbents for CO 2 capture [ 27 , 28 ] and catalysts [ 2 , 29 , 30 ]. A number of chemical and physical processes for the improvement of the properties have been developed and reviewed in the past.…”

Section: Introductionmentioning

confidence: 99%

The Biomodified Lignin Platform: A Review

et al. 2023

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A reliance on fossil fuel has led to the increased emission of greenhouse gases (GHGs). The excessive consumption of raw materials today makes the search for sustainable resources more pressing than ever. Technical lignins are mainly used in low-value applications such as heat and electricity generation. Green enzyme-based modifications of technical lignin have generated a number of functional lignin-based polymers, fillers, coatings, and many other applications and materials. These bio-modified technical lignins often display similar properties in terms of their durability and elasticity as fossil-based materials while also being biodegradable. Therefore, it is possible to replace a wide range of environmentally damaging materials with lignin-based ones. By researching publications from the last 20 years focusing on the latest findings utilizing databases, a comprehensive collection on this topic was crafted. This review summarizes the recent progress made in enzymatically modifying technical lignins utilizing laccases, peroxidases, and lipases. The underlying enzymatic reaction mechanisms and processes are being elucidated and the application possibilities discussed. In addition, the environmental assessment of novel technical lignin-based products as well as the developments, opportunities, and challenges are highlighted.

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WITHDRAWN: High-performance magnetic activated carbon from solid waste from lignin conversion processes. Part I: Their use as adsorbents for CO2

Cited by 19 publications

References 59 publications

Superior Selective CO₂ Adsorption of C₃N Pores: GCMC and DFT Simulations

Superior Selective CO₂ Adsorption of C₃N Pores: GCMC and DFT Simulations

CH₄/N₂ Adsorptive Separation on Zeolite X/AC Composites

The Biomodified Lignin Platform: A Review

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WITHDRAWN: High-performance magnetic activated carbon from solid waste from lignin conversion processes. Part I: Their use as adsorbents for CO2

Cited by 19 publications

References 59 publications

Superior Selective CO2 Adsorption of C3N Pores: GCMC and DFT Simulations

Superior Selective CO2 Adsorption of C3N Pores: GCMC and DFT Simulations

CH4/N2 Adsorptive Separation on Zeolite X/AC Composites

The Biomodified Lignin Platform: A Review

Contact Info

Product

Resources

About

Superior Selective CO₂ Adsorption of C₃N Pores: GCMC and DFT Simulations

Superior Selective CO₂ Adsorption of C₃N Pores: GCMC and DFT Simulations

CH₄/N₂ Adsorptive Separation on Zeolite X/AC Composites