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In this study, several chromium (Cr)-doped, biomass-derived hydrochar catalysts were synthesized via the one-pot method using starch, eucalyptus wood, and bagasse as carbon sources. Then, the performance of these synthesized materials for the catalytic conversion of glucose into HMF was evaluated by, primarily, the yield of HMF. The synergistic interactions between the Cr salt and the different biomass components were investigated, along with their effects on the catalytic efficiency. The differences in the catalytic activity of the synthesized materials were analyzed through structural characterization, as well as assessments of the acid density and strength. Among the catalysts, Cr5BHC180 derived from bagasse presented the highest activity, achieving an HMF yield of 64.5% in an aqueous solvent system of dimethyl sulfoxide (DMSO) and saturated sodium chloride (NaCl) at 170 \u00b0C after 5 h. After four cycles, the HMF yield of Cr5BHC180 decreased to 38.7%. Characterization techniques such as N2 adsorption\u2013desorption and Py-FTIR suggested that such a decline in the HMF yield is due to pore blockage and acid site coverage by humic by-products, as demonstrated by the fact that regeneration by calcination at 300 \u00b0C restored the HMF yield to 50.5%.<\/jats:p>","DOI":"10.3390\/polym17101413","type":"journal-article","created":{"date-parts":[[2025,5,20]],"date-time":"2025-05-20T11:50:31Z","timestamp":1747741831000},"page":"1413","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Chromium-Doped Biomass-Based Hydrochar-Catalyzed Synthesis of 5-Hydroxymethylfurfural from Glucose"],"prefix":"10.3390","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0009-0001-3608-9575","authenticated-orcid":false,"given":"Huimin","family":"Gao","sequence":"first","affiliation":[{"name":"Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2587-9579","authenticated-orcid":false,"given":"Wei","family":"Mao","sequence":"additional","affiliation":[{"name":"Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pize","family":"Xiao","sequence":"additional","affiliation":[{"name":"Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0001-3938-3550","authenticated-orcid":false,"given":"Chutong","family":"Ling","sequence":"additional","affiliation":[{"name":"Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhiming","family":"Wu","sequence":"additional","affiliation":[{"name":"Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jinghong","family":"Zhou","sequence":"additional","affiliation":[{"name":"Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,5,20]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Yang, L., Shao, L., Wu, Z., Zhan, P., and Zhang, L. (2023). Design and Synthesis of Porous Organic Polymers: Promising Catalysts for Lignocellulose Conversion to 5-Hydroxymethylfurfural and Derivates. Polymers, 15.","DOI":"10.20944\/preprints202305.1650.v1"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"e202200228","DOI":"10.1002\/cssc.202200228","article-title":"Advances in Catalytic Routes for the Homogeneous Green Conversion of the Bio-Based Platform 5-Hydroxymethylfurfural","volume":"15","author":"Messori","year":"2022","journal-title":"ChemSusChem"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/j.apcatb.2019.04.003","article-title":"Efficient catalytic conversion of glucose into 5-hydroxymethylfurfural by aluminum oxide in ionic liquid","volume":"253","author":"Hou","year":"2019","journal-title":"Appl. Catal. B Environ."},{"key":"ref_4","doi-asserted-by":"crossref","unstructured":"Ke, K., Ji, H., Shen, X., Kong, F., and Li, B. (2021). Pressure Reduction Enhancing the Production of 5-Hydroxymethylfurfural from Glucose in Aqueous Phase Catalysis System. Polymers, 13.","DOI":"10.3390\/polym13132096"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"141552","DOI":"10.1016\/j.cej.2023.141552","article-title":"Efficient conversion of glucose to 5-hydroxymethylfurfural by synergetic catalysis of enzymes and chemical catalysts towards potential large-scale continuous operation","volume":"459","author":"You","year":"2023","journal-title":"Chem. Eng. J."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"562","DOI":"10.1002\/cssc.201501405","article-title":"Levulinic Acid Biorefineries: New Challenges for Efficient Utilization of Biomass","volume":"9","author":"Pileidis","year":"2016","journal-title":"ChemSusChem"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"111254","DOI":"10.1016\/j.mcat.2020.111254","article-title":"Advance in constructing acid catalyst-solvent combinations for efficient transformation of glucose into 5-Hydroxymethylfurfural","volume":"498","author":"Zhang","year":"2020","journal-title":"Mol. Catal."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"235","DOI":"10.1016\/j.ces.2014.04.031","article-title":"On the kinetics of the isomerization of glucose to fructose using Sn-Beta","volume":"116","author":"Rajabbeigi","year":"2014","journal-title":"Chem. Eng. Sci."},{"key":"ref_9","doi-asserted-by":"crossref","unstructured":"Bartoli, M., Giorcelli, M., and Tagliaferro, A. (2022). Biochar Development as a Catalyst and Its Application. Biochar\u2014Productive Technologies, Properties and Applications, IntechOpen.","DOI":"10.5772\/intechopen.100763"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"1096","DOI":"10.1016\/j.jclepro.2018.12.276","article-title":"Clean production of 5-hydroxymethylfurfural from cellulose using a hydrothermal\/biomass-based carbon catalyst","volume":"213","author":"Wu","year":"2019","journal-title":"J. Clean. Prod."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"1002","DOI":"10.1016\/j.jclepro.2019.04.282","article-title":"Preparation, modification and environmental application of biochar: A review","volume":"227","author":"Wang","year":"2019","journal-title":"J. Clean. Prod."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"566","DOI":"10.1016\/j.apcatb.2016.12.005","article-title":"Facile one-pot synthesis of iron nanoparticles immobilized into the porous hydrochar for catalytic decomposition of phenol","volume":"204","author":"Gai","year":"2017","journal-title":"Appl. Catal. B Environ."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"123172","DOI":"10.1016\/j.fuel.2022.123172","article-title":"Facile one-pot synthesis of functional hydrochar catalyst for biomass valorization","volume":"315","author":"Liu","year":"2022","journal-title":"Fuel"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"54","DOI":"10.1007\/s42114-024-00861-2","article-title":"Multi-catalytic active site biochar-based catalysts for glucose isomerized to fructose: Experiments and density functional theory study","volume":"7","author":"Kang","year":"2024","journal-title":"Adv. Compos. Hybrid Mater."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/j.surfin.2017.06.011","article-title":"Aluminium oxide-silica\/carbon composites from rice husk as a bi-functional heterogeneous catalyst for the one-pot sequential reaction in the conversion of glucose","volume":"9","author":"Adam","year":"2017","journal-title":"Surf. Interfaces"},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"187","DOI":"10.1016\/j.gresc.2021.01.006","article-title":"Synthesis of 5-hydroxymethylfurfural from dehydration of biomass-derived glucose and fructose using supported metal catalysts","volume":"2","author":"Shao","year":"2021","journal-title":"Green Synth. Catal."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"e202300326","DOI":"10.1002\/cplu.202300326","article-title":"Unraveling Structural and Acidic Properties of Al-SBA-15-supported Metal Phosphates: Assessment for Glucose Dehydration","volume":"88","author":"Rakngam","year":"2023","journal-title":"ChemPlusChem"},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"114127","DOI":"10.1016\/j.cattod.2023.114127","article-title":"Sulfosuccinic acid-based metal-center catalysts for the synthesis of HMF from carbohydrates","volume":"418","author":"Perez","year":"2023","journal-title":"Catal. Today"},{"key":"ref_19","doi-asserted-by":"crossref","unstructured":"Chen, Y., An, D., Sun, S., Gao, J., and Qian, L. (2018). Reduction and Removal of Chromium VI in Water by Powdered Activated Carbon. Materials, 11.","DOI":"10.3390\/ma11020269"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"2717","DOI":"10.1016\/j.apsusc.2010.10.051","article-title":"Resolving surface chemical states in XPS analysis of first row transition metals, oxides and hydroxides: Cr, Mn, Fe, Co and Ni","volume":"257","author":"Biesinger","year":"2011","journal-title":"Appl. Surf. Sci."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"142","DOI":"10.1016\/j.biortech.2019.02.126","article-title":"A hydrothermal-carbonization process for simultaneously production of sugars, graphene quantum dots, and porous carbon from sugarcane bagasse","volume":"282","author":"Chai","year":"2019","journal-title":"Bioresour. Technol."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"432","DOI":"10.1016\/j.biortech.2018.06.014","article-title":"Correlations between hydrochar properties and chemical constitution of orange peel waste during hydrothermal carbonization","volume":"265","author":"Xiao","year":"2018","journal-title":"Bioresour. Technol."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"118","DOI":"10.1016\/j.indcrop.2015.04.021","article-title":"Assessment of chemical transformations in eucalyptus, sugarcane bagasse and straw during hydrothermal, dilute acid, and alkaline pretreatments","volume":"73","author":"Carvalho","year":"2015","journal-title":"Ind. Crops Prod."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"130338","DOI":"10.1016\/j.energy.2024.130338","article-title":"Catalytic effect of metal salts on deoxygenation and aromatization reaction during pressurized pyrolysis of corncob waste at mild temperatures","volume":"291","author":"Zheng","year":"2024","journal-title":"Energy"},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"123343","DOI":"10.1016\/j.energy.2022.123343","article-title":"Hydrothermal carbonization of forest waste into solid fuel: Mechanism and combustion behavior","volume":"246","author":"Liang","year":"2022","journal-title":"Energy"},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"38","DOI":"10.1016\/j.fuproc.2019.03.012","article-title":"Highly efficient Cr\/beta zeolite catalyst for conversion of carbohydrates into 5-hydroxymethylfurfural: Characterization and performance","volume":"190","author":"Xu","year":"2019","journal-title":"Fuel Process. Technol."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"117831","DOI":"10.1016\/j.jclepro.2019.117831","article-title":"Hydrothermal carbonization of cellulose and xylan into hydrochars and application on glucose isomerization","volume":"237","author":"Sheng","year":"2019","journal-title":"J. Clean. Prod."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"131615","DOI":"10.1016\/j.jclepro.2022.131615","article-title":"Co-hydrothermal carbonization of sewage sludge and coal slime with sulfuric acid for N, S doped hydrochar","volume":"354","author":"Yang","year":"2022","journal-title":"J. Clean. Prod."},{"key":"ref_29","doi-asserted-by":"crossref","unstructured":"Nizamuddin, S., Qureshi, S.S., Baloch, H.A., Siddiqui, M.T., Takkalkar, P., Mubarak, N.M., Dumbre, D.K., Griffin, G.J., Madapusi, S., and Tanksale, A. (2019). Microwave Hydrothermal Carbonization of Rice Straw: Optimization of Process Parameters and Upgrading of Chemical, Fuel, Structural and Thermal Properties. Materials, 12.","DOI":"10.3390\/ma12030403"},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"1139","DOI":"10.1007\/s12649-016-9664-4","article-title":"Transforming Sugarcane Bagasse and Vinasse Wastes into Hydrochar in the Presence of Phosphoric Acid: An Evaluation of Nutrient Contents and Structural Properties","volume":"8","author":"Melo","year":"2017","journal-title":"Waste Biomass Valorization"},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"357","DOI":"10.1016\/j.biortech.2018.06.112","article-title":"Physicochemical, structural and combustion characterization of food waste hydrochar obtained by hydrothermal carbonization","volume":"266","author":"Saqib","year":"2018","journal-title":"Bioresour. Technol."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"15762","DOI":"10.1039\/C8RA02056F","article-title":"One-step fabrication of carbonaceous solid acid derived from lignosulfonate for the synthesis of biobased furan derivatives","volume":"8","author":"Yu","year":"2018","journal-title":"RSC Adv."},{"key":"ref_33","doi-asserted-by":"crossref","unstructured":"Seroka, N.S., Taziwa, R.T., and Khotseng, L. (2022). Extraction and Synthesis of Silicon Nanoparticles (SiNPs) from Sugarcane Bagasse Ash: A Mini-Review. Appl. Sci., 12.","DOI":"10.3390\/app12052310"},{"key":"ref_34","doi-asserted-by":"crossref","unstructured":"Wei, W., Wu, M., Xu, H., Zhang, X., and Ren, W. (2024). Modulation of the properties of starch gels by a one-step extrusion modification method based on Ca2+-citric acid synergistic crosslinking. Int. J. Biol. Macromol., 257.","DOI":"10.1016\/j.ijbiomac.2023.128607"},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"180","DOI":"10.1016\/j.biortech.2012.10.076","article-title":"Pretreatment of olive tree biomass with FeCl3 prior enzymatic hydrolysis","volume":"128","author":"Romero","year":"2013","journal-title":"Bioresour. Technol."},{"key":"ref_36","doi-asserted-by":"crossref","unstructured":"Chen, S., Tang, X., Chen, J., Xue, Y., Wang, Y., and Xu, D. (2025). Regulation of slow-release performance of high-sugar biomass waste filter mud and sugarcane bagasse by co-hydrothermal carbonization and potential evaluation of hydrochar-based slow-release fertilizers. Biomass Bioenergy, 193.","DOI":"10.1016\/j.biombioe.2024.107557"},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"124095","DOI":"10.1016\/j.apcatb.2024.124095","article-title":"Efficient isomerization of glucose to fructose over Al-loaded functional lignin biopolymer","volume":"353","author":"Shan","year":"2024","journal-title":"Appl. Catal. B Environ. Energy"},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"36","DOI":"10.1016\/j.micromeso.2012.11.021","article-title":"Host\u2013guest synthesis and encapsulation of phosphotungstic acid in MIL-101 via \u201cbottle around ship\u201d: An effective catalyst for oxidative desulfurization","volume":"170","author":"Hu","year":"2013","journal-title":"Microporous Mesoporous Mater."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"11351","DOI":"10.1021\/acssuschemeng.1c02870","article-title":"Highly Efficient 5-Hydroxymethylfurfural Production from Glucose over Bifunctional SnOx\/C catalyst","volume":"9","author":"Wang","year":"2021","journal-title":"ACS Sustain. Chem. Eng."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"97589","DOI":"10.1039\/C5RA17615H","article-title":"Synthesis of phosphotungstic acid-supported versatile metal\u2013organic framework PTA@MIL-101(Fe)\u2013NH2\u2013Cl","volume":"5","author":"Zhang","year":"2015","journal-title":"RSC Adv."},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"120184","DOI":"10.1016\/j.apcata.2025.120184","article-title":"High efficient production of 5-hydroxymethyl-furfural from glucose over AACH @ \u03b3-AlOOH catalyst: Insights into structure, acidic properties and performance","volume":"696","author":"Tang","year":"2025","journal-title":"Appl. Catal. A Gen."}],"container-title":["Polymers"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2073-4360\/17\/10\/1413\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,9]],"date-time":"2025-10-09T17:36:00Z","timestamp":1760031360000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2073-4360\/17\/10\/1413"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,5,20]]},"references-count":41,"journal-issue":{"issue":"10","published-online":{"date-parts":[[2025,5]]}},"alternative-id":["polym17101413"],"URL":"https:\/\/doi.org\/10.3390\/polym17101413","relation":{},"ISSN":["2073-4360"],"issn-type":[{"value":"2073-4360","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,5,20]]}}}