{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,24]],"date-time":"2026-09-24T18:25:34Z","timestamp":1790274334211,"version":"4.1.0"},"reference-count":27,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2025,6,6]],"date-time":"2025-06-06T00:00:00Z","timestamp":1749168000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100007129","name":"Taishan Scholars Program of Shandong Province","doi-asserted-by":"publisher","award":["ZR2021ME016"],"award-info":[{"award-number":["ZR2021ME016"]}],"id":[{"id":"10.13039\/501100007129","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>In this study, a polycarboxylate coal\u2013water slurry dispersant (SSPA) containing benzenesulfonic acid groups was synthesized using allyl alcohol polyoxyethylene ether 500, sodium styrenesulfonate, and acrylic acid as raw materials. The effects of SSPA and a commercially available naphthalene-based dispersant (MF) on the slurry characteristics of low-rank coal were compared, and the maximum solid content of CWS prepared with SSPA reached 65.2%, which was 4% higher than that achieved with MF (61.2%). Unlike the more electronegative MF dispersant, SSPA features long polyether side chains that exert a robust steric hindrance effect, significantly enhancing coal particle dispersion. This results in a decrease in apparent viscosity and an increase in the stability of the CWS formulated with SSPA. Furthermore, adsorption experiments revealed that the adsorption kinetics of both SSPA and MF on coal conformed to the pseudo-second-order kinetic model. SSPA\u2019s adsorption on coal particles followed the Langmuir isothermal adsorption model, and the KL value of 0.0094 for SSPA was greater than that of MF (0.0086). This indicates that SSPA has a stronger affinity for the coal surface. Overall, the superior adsorption efficacy of SSPA is attributed to the benzene ring in its nonpolar group, which facilitates steric hindrance with aromatic structures in coal. Additionally, SSPA improves slurry stability, achieving a penetration rate of 96.7%. Finally, the carboxylic acid groups in SSPA likely engage in electrostatic attraction with cations on the coal surface, enhancing adsorption.<\/jats:p>","DOI":"10.3390\/molecules30122493","type":"journal-article","created":{"date-parts":[[2025,6,6]],"date-time":"2025-06-06T09:43:14Z","timestamp":1749202994000},"page":"2493","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["The Synthesis of Polycarboxylate Dispersants Containing Benzenesulfonic Acid Groups and Their Performance in Promoting Coal Particle Dispersion"],"prefix":"10.3390","volume":"30","author":[{"given":"Lin","family":"Li","sequence":"first","affiliation":[{"name":"College of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao 266590, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhisen","family":"Li","sequence":"additional","affiliation":[{"name":"College of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao 266590, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shuo","family":"Yang","sequence":"additional","affiliation":[{"name":"Coal Product Research and Development Management Center, Xinwen Mining Group Co., Ltd., Tai\u2019an 271200, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chuandong","family":"Ma","sequence":"additional","affiliation":[{"name":"College of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao 266590, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wenqi","family":"Zhang","sequence":"additional","affiliation":[{"name":"College of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao 266590, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Meng","family":"He","sequence":"additional","affiliation":[{"name":"College of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao 266590, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaofang","family":"You","sequence":"additional","affiliation":[{"name":"College of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao 266590, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,6,6]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Lyu, J., and Li, S. (2022). Clean Coal and Sustainable Energy, Springer.","DOI":"10.1007\/978-981-16-1657-0"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"4816","DOI":"10.1021\/acs.energyfuels.2c03938","article-title":"Review and perspectives of anionic dispersants for coal\u2013water slurry","volume":"37","author":"Xu","year":"2023","journal-title":"Energy Fuels"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"124237","DOI":"10.1016\/j.molliq.2024.124237","article-title":"Study on the slurry characteristics and surface microscopic interactions mechanism of diesel modified low-rank coal","volume":"37","author":"Ma","year":"2024","journal-title":"J. Mol. Liq."},{"key":"ref_4","first-page":"74","article-title":"Effects of coal structure and oxygen-containing functional groups on the wettability of low-rank coal","volume":"217","author":"Zhang","year":"2018","journal-title":"Fuel"},{"key":"ref_5","first-page":"3143","article-title":"Study on the influence of oxygen-containing groups and pore structure of low-rank coal on the stability of coal-water slurry","volume":"6","author":"Liu","year":"2020","journal-title":"Energy Rep."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"1247","DOI":"10.1080\/01932691.2014.971367","article-title":"Study on enhancing the slurry performance of coal\u2013water slurry prepared with low-rank coal","volume":"36","author":"Li","year":"2015","journal-title":"J. Dispers. Sci. Technol."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"344","DOI":"10.1016\/j.cjche.2020.07.064","article-title":"Study of sodium lignosulfonate prepare low-rank coal-water slurry: Experiments and simulations","volume":"29","author":"Li","year":"2021","journal-title":"Chin. J. Chem. Eng."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"101","DOI":"10.1016\/j.colsurfa.2012.07.023","article-title":"Synthesis and performance of a comblike amphoteric polycarboxylate dispersant for coal\u2013water slurry","volume":"412","author":"Zhu","year":"2012","journal-title":"Colloids Surf. A Physicochem. Eng. Asp."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"32911","DOI":"10.1039\/C9RA04391H","article-title":"Influence of different dispersants on rheological behaviors of coal water slurry prepared from a low quality coal","volume":"9","author":"Hu","year":"2019","journal-title":"RSC Adv."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"71","DOI":"10.1007\/BF02140667","article-title":"Nature and properties of humic acid prepared from different sources and its effect on nutrient availability","volume":"88","author":"Pal","year":"1985","journal-title":"Plant Soil"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"2433","DOI":"10.1016\/j.enconman.2007.04.007","article-title":"Properties of sodium lignosulfonate as dispersant of coal water slurry","volume":"48","author":"Yang","year":"2007","journal-title":"Energy Convers. Manag."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"1296","DOI":"10.1080\/01932690701866534","article-title":"Physicochemical properties of calcium lignosulfonate with different molecular weights as dispersant in aqueous suspension","volume":"29","author":"Yang","year":"2008","journal-title":"J. Dispers. Sci. Technol."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"180","DOI":"10.1016\/j.colsurfa.2006.11.034","article-title":"Understanding of naphthalene sulfonate formaldehyde condensates as a dispersing agent to stabilise raw porcelain gres suspensions: Surface adsorption and rheological behaviour","volume":"299","author":"Marco","year":"2007","journal-title":"Colloids Surf. A Physicochem. Eng. Asp."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"2461","DOI":"10.1002\/aic.11838","article-title":"Effects of chemical structure on the properties of carboxylate-type copolymer dispersant for coal-water slurry","volume":"55","author":"Xu","year":"2009","journal-title":"AIChE J."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"415","DOI":"10.1080\/01932691.2015.1038349","article-title":"Effect of polycarboxylic acid used as high-performance dispersant on low-rank coal-water slurry","volume":"37","author":"Hong","year":"2016","journal-title":"J. Dispers. Sci. Technol."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"133085","DOI":"10.1016\/j.conbuildmat.2023.133085","article-title":"Effects of temperature and bleeding on rheology of cement paste","volume":"403","author":"Wang","year":"2023","journal-title":"Constr. Build. Mater."},{"key":"ref_17","doi-asserted-by":"crossref","unstructured":"Guo, K., Dong, H., Zhang, J., Zhang, L., and Li, Z. (2025). Experimental Study of Alkali-Activated Cementitious Materials Using Thermally Activated Red Mud: Effect of the Si\/Al Ratio on Fresh and Mechanical Properties. Buildings, 15.","DOI":"10.3390\/buildings15040565"},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"126039","DOI":"10.1016\/j.fuel.2022.126039","article-title":"Study on characteristics of coal gasification fine slag-coal water slurry slurrying, combustion, and ash fusion","volume":"332","author":"Ma","year":"2023","journal-title":"Fuel"},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"127853","DOI":"10.1016\/j.conbuildmat.2022.127853","article-title":"Effect of biomass power plant ash on fresh properties of cemented coal gangue backfill","volume":"340","author":"Qi","year":"2022","journal-title":"Constr. Build. Mater."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"244","DOI":"10.1016\/j.kijoms.2018.04.001","article-title":"Critical of linear and nonlinear equations of pseudo-first order and pseudo-second order kinetic models","volume":"4","author":"Moussout","year":"2018","journal-title":"Karbala Int. J. Mod. Sci."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"451","DOI":"10.1016\/S0032-9592(98)00112-5","article-title":"Pseudo-second order model for sorption processes","volume":"34","author":"Ho","year":"1999","journal-title":"Process Biochem."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"8","DOI":"10.1016\/j.desal.2008.04.011","article-title":"Batch kinetic and equilibrium studies of adsorption of Reactive Blue 21 by fly ash and sepiolite","volume":"243","author":"Demirbas","year":"2009","journal-title":"Desalination"},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"2179","DOI":"10.1080\/01496399308016742","article-title":"Modeling cadmium adsorption by activated carbon using the Langmuir and Freundlich isotherm expressions","volume":"28","author":"Reed","year":"1993","journal-title":"Sep. Sci. Technol."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"241","DOI":"10.1016\/j.jiec.2015.02.021","article-title":"Application of Langmuir and Freundlich isotherms to predict adsorbate removal efficiency or required amount of adsorbent","volume":"28","author":"Chung","year":"2015","journal-title":"J. Ind. Eng. Chem."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"134865","DOI":"10.1016\/j.chemosphere.2022.134865","article-title":"Adsorption behaviour of microplastics on the heavy metal Cr (VI) before and after ageing","volume":"302","author":"Li","year":"2022","journal-title":"Chemosphere"},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"1092","DOI":"10.1021\/acs.langmuir.7b03343","article-title":"Evaluating the dispersant stabilization of colloidal suspensions from the scaling behavior of gel rheology and adsorption measurements","volume":"34","author":"Khalkhal","year":"2018","journal-title":"Langmuir"},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"5167","DOI":"10.1021\/acssuschemeng.6b00929","article-title":"Gel permeation chromatography in determining molecular weights of lignins: Critical aspects revisited for improved utility in the development of novel materials","volume":"4","author":"Lange","year":"2016","journal-title":"ACS Sustain. Chem. Eng."}],"container-title":["Molecules"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1420-3049\/30\/12\/2493\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,9]],"date-time":"2025-10-09T17:47:48Z","timestamp":1760032068000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1420-3049\/30\/12\/2493"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,6,6]]},"references-count":27,"journal-issue":{"issue":"12","published-online":{"date-parts":[[2025,6]]}},"alternative-id":["molecules30122493"],"URL":"https:\/\/doi.org\/10.3390\/molecules30122493","relation":{},"ISSN":["1420-3049"],"issn-type":[{"value":"1420-3049","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,6,6]]}}}