Study on the slurrying properties of semi-coke with dispersants and the interaction between semi-coke particles based on E-DLVO theory

Yao, Yaqian; Yang, Zhiyuan; Meng, Zhuoyue; Li, Yinyan; Zhu, Hanbo; Zhang, Yating; Chen, Zhiping

doi:10.1016/j.apsusc.2022.154609

Cited by 6 publications

(3 citation statements)

References 46 publications

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“…The driving force of SL adsorption was mainly hydrogen bonds between the hydrophilic groups of SL (like sulfonic groups and phenolic hydroxyl groups) and silanol groups of the SiC surface. The hydrophilic groups of SL bonded to a fine SiC surface played an anchor role in enhancing the adsorption force between SL and the SiC surface . The remaining hydrophilic groups of SL extended from the SiC surface to water so that the hydration film formed on the modified SiC surface by contacting with water molecules .…”

Section: Resultsmentioning

confidence: 99%

“…The hydrophilic groups of SL bonded to a fine SiC surface played an anchor role in enhancing the adsorption force between SL and the SiC surface. 56 The remaining hydrophilic groups of SL extended from the SiC surface to water so that the hydration film formed on the modified SiC surface by contacting with water molecules. 26 It was conducive to lubricating the surface of fine SiC particles and improving the fluidity of slurry.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Adsorption and Dispersion Effect of Sodium Lignosulfonate on Fine SiC Particles in Aqueous Media

Zhang,

Zheng

et al. 2023

Langmuir

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This study presented a novel modification method for fine SiC powder by using sodium lignosulfonate as a dispersant. The adsorption behavior of sodium lignosulfonate on the SiC/water interface and its effect on the performance of a fine SiC slurry were systematically investigated. The adsorption results showed that sodium lignosulfonate formed monolayer adsorption on the surface of fine SiC and that the saturated adsorption capacity was 1.3263 mg/g. The adsorption reached equilibrium within 3 h and was mainly controlled by active sites on the SiC surface. The dispersion, stability, and zeta potential of modified SiC powder were improved after sodium lignosulfonate adsorption. The zeta potential of modified SiC reached a minimum value of −44.8 mV at pH 12. Modified SiC suspensions had great stability in a wider pH range of 6− 12. Modified SiC slurry with 54 vol % solid loading had a low viscosity of 173 mPa•s at pH 10. Subsequently, coarse SiC powder was added for slip casting. A mixed slurry with high solid loading (69 vol %) and low viscosity (583 mPa•s) was prepared using modified SiC and coarse SiC powders at a mass ratio of 2:3. Finally, recrystallized SiC green body with high density (2.6492 g/cm 3 ) was obtained.

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Section: Resultsmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

Adsorption and Dispersion Effect of Sodium Lignosulfonate on Fine SiC Particles in Aqueous Media

Zhang,

Zheng

et al. 2023

Langmuir

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“…[6] The quality and performance of the product in the abovementioned fields are directly affected by the application of the dispersant. [7][8][9][10] Volatile organic solvents applied in production and daily life often possess a certain amount of toxicity. The continuous use of these solvents, and their accumulation in both organisms and the environment causes varying degrees of harm to the human body and nature.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Utilization of a Comb‐Like Polycarboxylate Dispersant for Organic Pigment

Cao,

Cai,

Huang

et al. 2023

ChemistrySelect

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As a novel form of carboxylate comb‐like copolymers, SAM‐(m)PEG was prepared by polymerizing styrene (S), acrylic (A), and maleic anhydride (M) to obtain a random copolymer labeled SAM. SAM was then esterified using either polyethylene glycol (PEG) or methyl PEG (mPEG), a waterborne polymer dispersant for dispersing and stabilizing C.I. Pigment Yellow 180 (PY 180). The structures of SAM‐(m)PEG and the ground suspension of PY 180 were characterized by Fourier transform infrared (FT‐IR) spectroscopy, nuclear magnetic resonance (NMR) spectroscopy, scanning electron microscopy (SEM), a nanoparticle size analysis, and viscometry. The effects of different branch chains, synthetic formulas, and grinding conditions on the dispersibility of SAM‐(m)PEG were evaluated. In addition, the optical properties of the pigments were investigated after ultrafine grinding. The adsorption mechanism between the SAM‐(m)PEG dispersants and PY 180 particles is also discussed. SAM‐PEG6002 outperformed the other SAM‐(m)PEG dispersants owing to its excellent dispersion and stability. When used as the dispersant, the average particle size (Z‐average) of PY 180 after grinding was 264.6 nm, and the particle size distribution became narrow (PDI=0.089). Moreover, SAM‐PEG6002 effectively maintained the color performance of the pigment, and the product was successfully applied to the pigment coating. Therefore, SAM‐PEG6002 is an effective waterborne polymer dispersant for organic pigments.

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Molecular simulation of the slurrying mechanism in microplastic semi-coke water slurry

Liu,

Yang,

et al. 2024

J Mol Model

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Study on the slurrying properties of semi-coke with dispersants and the interaction between semi-coke particles based on E-DLVO theory

Cited by 6 publications

References 46 publications

Adsorption and Dispersion Effect of Sodium Lignosulfonate on Fine SiC Particles in Aqueous Media

Adsorption and Dispersion Effect of Sodium Lignosulfonate on Fine SiC Particles in Aqueous Media

Preparation and Utilization of a Comb‐Like Polycarboxylate Dispersant for Organic Pigment

Molecular simulation of the slurrying mechanism in microplastic semi-coke water slurry

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