Article
Energy & Fuels
Xu Zhang, Haowen Cui, Qinfang Li, Haian Xia
Summary: In this study, FePO4 combined with organic acids were used as catalysts to convert untreated wheat straw into 5-hydroxymethylfurfural (HMF) and furfural. The use of organic acids regulated the acidity and promoted the dehydration process, resulting in higher yields of HMF and furfural. This method offers an affordable and environmentally friendly approach to produce these valuable compounds from agricultural waste.
Article
Chemistry, Multidisciplinary
Yanping Xiang, Sha Wen, Yi Tian, Kangyu Zhao, Dongwen Guo, Feng Cheng, Qiong Xu, Xianxiang Liu, Dulin Yin
Summary: The study investigated the catalytic potential of PDVTA-SO3H polymer for the etherification of HMF to EMF under solvent-free conditions. The material showed high specific surface area and density of -SO3H group. Optimized conditions led to efficient HMF conversion and EMF yield within 30 minutes.
Article
Agricultural Engineering
Chunxiao Gong, Xianzhi Meng, Caidi Jin, Ming Yang, Jianglong Liu, Kuichuan Sheng, Yunqiao Pu, Arthur Ragauskas, Guanya Ji, Ximing Zhang
Summary: This study presents a green synthetic route of cellulose formate and its efficient conversion into 5-hydroxymethylfurfural (HMF). Ball milling was used to improve the formylation and catalytic conversion of cellulose formate (BCF) into HMF. The use of BCF derived from cellulose ball milled for 1.5 h achieved a 66.9% HMF yield at 150 degrees C for 20 min. BCF exhibited high reactivity towards HMF due to its excellent solubility and accessibility in DMSO-H2O media.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Chemistry, Multidisciplinary
Tongtong Zhang, Yaoping Hu, Liyuan Huai, Zhijin Gao, Jian Zhang
Summary: DPhSO is reported as an active and environmentally friendly solvent for synthesizing HMF from fructose, with nearly 100% conversion efficiency. The reaction mechanism of DPhSO-catalyzed HMF formation was analyzed through various experiments and theoretical calculations.
Article
Materials Science, Paper & Wood
Chunjie Wei, Gang Liu, Yujiao Xie, Zhongyuan Sun, Chang Liu, Feng Song, Hongyou Cui
Summary: In this study, a series of molten salt hydrates (MSH) were evaluated for their ability to dissolve cellulose and catalyze its conversion into 5-hydroxymethylfurfural (HMF). ZnBr2 center dot 3H(2)O-LiCl center dot 3H(2)O showed good performance in cellulose dissolution and conversion. By optimizing the concentration of ZnBr2 center dot 3H(2)O, reaction temperature, and time, a maximum HMF yield of 48.7% was achieved. The species present in ZnBr2 center dot 3H(2)O-LiCl center dot 3H(2)O were analyzed, and it was found that Br- and H+ were the active species for fructose dehydration into HMF. ZnBr3- and H+ catalyzed the conversion of fructose into furfural, competing with HMF production. The proposed reaction mechanism provides insight into the cooperative role of species in MSH for cellulose conversion.
Review
Chemistry, Multidisciplinary
Han Wu, Rui Zhang, Yunqi Zhai, Xishang Song, Jian Xiong, Xiaoyun Li, Yina Qiao, Xuebin Lu, Zhihao Yu
Summary: This review focuses on exploring the interactions between solvent systems and the conversion of cellulose and its monosaccharides into HMF, including the effects on substrate conversion, reaction regulation, and product acquisition. The insights provided in this review are significant for the sustainable production of HMF from biomass feedstocks and the development of greener solvent systems.
Article
Chemistry, Multidisciplinary
Huiyong Wang, Jingjing Cui, Yuling Zhao, Zhiyong Li, Jianji Wang
Summary: By evaluating 9 types of organic solvents and 10 types of ILs, it was found that in addition to low mutual solubility, an ideal solvent should have strong hydrogen bond acceptor properties, and the interaction between the cation and anion of ILs is also crucial for the separation of 5-HMF.
Article
Chemistry, Multidisciplinary
Jiehao Hu, Mengting Yu, Yao Li, Xiaoli Shen, Shenyu Cheng, Tianyou Xu, Chengsheng Ge, Yihang Yu, Zhaoyang Ju
Summary: This study investigates the dehydration mechanism of fructose to HMF catalyzed by different functionalized ILs using density functional theory calculations. The overall reaction process includes three dehydration steps, with the second step being the rate-determining step. Functionalized cations show good proton transfer ability and catalyze the dehydration reaction. Anions can form strong H-bonds with fructose and cations, providing a polar environment for stabilizing intermediates and transition states. The high catalytic activity is attributed to the synergetic catalysis of cations and anions in completing the dehydration of fructose.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Physical
Xiaofan Zhu, Qiqi Liang, Yan Fu, Jie Chang
Summary: This study investigated the effects of a solid acid catalyst with both acid and base sites (x%Al-MCM-41/S) on the conversion of glucose to HMF in a biphasic reaction system. The results showed that glucose can be efficiently converted into HMF under suitable conditions, and the system can also effectively convert other carbohydrates into furfural and HMF. The solvent and catalyst demonstrated good recyclability, and the obtained HMF had a high purity of 99%.
SUSTAINABLE ENERGY & FUELS
(2023)
Article
Chemistry, Multidisciplinary
Weizi Zhang, Xinxin Li, Shaoru Liu, Jianhao Qiu, Jiahuan An, Jianfeng Yao, Songlin Zuo, Bo Zhang, Haian Xia, Changzhi Li
Summary: In this study, Ag/TiO2 materials with different interfacial structures were prepared and used for the photocatalytic conversion of biomass-derived 5-HMF to value-added HMFCA. It was found that low-temperature reduction could enhance the photoinduced charge separation efficiency and the localized surface plasmon resonance effects. The 2.5% Ag/TiO2-LTR showed the highest HMFCA selectivity of 96.7% under visible-light illumination. However, the photocatalytic efficiency decreased significantly when the reduction temperature increased due to the encapsulation of Ag NPs by a thicker TiOx overlay.
Review
Energy & Fuels
Poornima Wanninayake, Mahinsasa Rathnayake, Dilantha Thushara, Sanja Gunawardena
Summary: This study explores the production process of agricultural waste biorefineries and their product 5-HMF. Rice straw, as a sustainable waste resource, has the potential for large-scale 5-HMF production. Energy-intensive pretreatment techniques and less feasible catalytic conversion methods are identified as the major challenges to overcome in the production process.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Multidisciplinary Sciences
Ryoya Ito, Hisashi Miyafuji
Summary: The production of 5-hydroxymethylfurfural (5-HMF) from Japanese cedar using an ionic liquid, 1-methylimidazolium hydrogen sulfate ([MIM]HSO4), was studied. Among the three reaction systems investigated, the one combining [MIM]HSO4 treatment with vacuum steam distillation proved to be the most effective, achieving a maximum yield of 17.5 wt% after 45 minutes at 160 degrees C. This method is suitable for 5-HMF production as it is a one-pot process without the need for catalysts or pretreatment.
SCIENTIFIC REPORTS
(2021)
Article
Materials Science, Paper & Wood
Tao Wang, Cailiang Zhang, Hui Feng, Qingjun Zou, Wenrui Huang, Jiacong Wu, Juan Han, Yun Wang
Summary: A green and effective stepwise catalytic system for cellulose conversion to 5-hydroxymethylfurfural (HMF) was developed. The system involved fast dissolution of cellulose using ZnBr2 center dot 4H(2)O as the solvent, preparation of enzyme-inorganic hybrid nanoflowers as biocatalysts, and dehydration of fructose to 5-HMF using HCl as the catalyst. Under optimal conditions, the yield of 5-HMF from cellulose was about 21.6%.
Article
Chemistry, Multidisciplinary
Xiaohan Dong, Keyan Sheng, Zhiyan Chen, Changhao Guo, Jiang Huang, Yanlong Gu
Summary: In this study, a highly efficient method for separating 5-hydroxymethylfurfural by specific adsorption of dimethyl sulfoxide (DMSO) using cellulose microgels prepared by electron beam irradiation was developed. The recovered cellulose microgel can be reused, but with a decreased separation efficiency. Various characterizations were performed to investigate the adsorption behavior of the microgel towards DMSO, and electron-beam etching was found to play a crucial role in enriching DMSO in the matrix of the microgel.
Article
Chemistry, Multidisciplinary
Xiaohan Dong, Keyan Sheng, Zhiyan Chen, Changhao Guo, Jiang Huang, Yanlong Gu
Summary: This article presents a new method for separating chemicals from a reaction solution using a cellulose microgel fabricated by electron beam irradiation as a bio-based absorbant. The research team is from Huazhong University of Science and Technology.
Article
Construction & Building Technology
Xiuquan Liu, Jing Wen, Chenggong Chang, Weixin Zheng, Qiyuan Liu, Xueying Xiao, Jinmei Dong
Summary: Low-cost magnesium oxysulfate (MOS) cement was prepared using a magnesia-rich residue as the raw material. The effects of calcination temperature on the properties of calcined products and the phase and microstructure of the MOS cement prepared from the calcined products were studied.
ADVANCES IN CEMENT RESEARCH
(2022)
Article
Chemistry, Physical
Hao Peng, Yaohan Du, Xiaogang Zheng, Jing Wen
Summary: MnS-CdS solid solution modified S-doped kaolin composites were successfully prepared via high-temperature sulfurization for enhanced H2 evolution rate in solar-light induced water splitting. The optimal composite showed significantly higher H2 evolution rate and cycling stability compared to traditional kaolin and S-doped kaolin, demonstrating promising potential for practical applications.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Construction & Building Technology
Zhengbin Yan, Pengwei Yang, Jiaxin Huang, Qian Jia, Jing Wen, Jinmei Dong, Weixin Zheng, Chenggong Chang, Hongning Wang, Ruoyu Chen
Summary: In this study, the effects of adding five kinds of inorganic salts to magnesium oxychloride cement (MOC) at low temperature were investigated. The addition of inorganic salts was found to significantly improve the hydration reaction rate and shorten the curing time. The presence of inorganic salts also improved the diffusion rate of Mg2+. These findings provide valuable information for studying the hydration reaction and engineering performance of MOC at low temperatures.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Qing Huang, Weixin Zheng, Xueying Xiao, Jinmei Dong, Jing Wen, Chenggong Chang
Summary: The study found that magnesium oxychloride cement has stable compressive strength and hydration products in high salt environments, showing excellent corrosion resistance, but in low salt environments, the compressive strength decreases and hydration products decompose, indicating poor corrosion resistance.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Crystallography
Qing Huang, Weixin Zheng, Ying Li, Chenggong Chang, Jing Wen, Jinmei Dong, Xueying Xiao
Summary: This paper investigates the effects of replacing magnesium chloride with magnesium sulfate on the setting time, compressive strength, and water resistance of magnesium oxychloride cement. The results show that the addition of magnesium sulfate prolongs the setting time, reduces the compressive strength, but improves the water resistance of the cement.
Article
Crystallography
Jing Wen, Jinmei Dong, Chenggong Chang, Xueying Xiao, Weixin Zheng
Summary: The expansion of mortar bars caused by alkali-silica reaction (ASR) induced by four types of aggregates from different regions in northwest China was studied. The chemical composition, mineral composition, vitreous and amorphous substances, and expansion rates were determined. It was found that silica was the primary component in the chemical compositions of these aggregates, and the addition of fly ash and silica fume could inhibit alkali activity expansion.
Article
Environmental Sciences
Yongshan Tan, Zhibin Zhang, Jing Wen, Jinmei Dong, Chengyou Wu, Ying Li, Dingyi Yang, Hongfa Yu
Summary: In this study, boron-containing MgO by-products obtained from lithium extraction in Qarhan Salt Lake, China, were used as substitutes for dead-burned MgO to prepare magnesium phosphate potassium cement (MKPC) as a rapid repair material. The effects of different MgO sources, molar ratio of MgO to KH2PO4, and curing age on the setting time and mechanical properties of MKPC were investigated. The results showed that the by-product MgO prolonged the setting time of MKPC, but with increasing age, the mechanical properties of MKPC prepared by by-product MgO were excellent. The study also characterized the phase and microstructure evolution of MKPC prepared with different MgO contents.
ENVIRONMENTAL RESEARCH
(2022)
Article
Engineering, Environmental
Hao Peng, Heju Wang, Liping Wang, Congying Huang, Xiaogang Zheng, Jing Wen
Summary: La2S3/SN-biochar composites were prepared by modifying S,N-codoped biochar with La2S3, which significantly improved the adsorption and photocatalytic activities for tetracycline hydrochloride removal. The optimal 3c-La2S3/SN-biochar with a La content of 15.43 wt% and an N content of 0.49 wt% exhibited the highest TCH removal efficiency. However, long-term photo-corrosion led to decreased adsorption-photocatalytic efficiency and decreased adsorption capacity.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Construction & Building Technology
Qing Huang, Weixin Zheng, Jinmei Dong, Jing Wen, Chenggong Chang, Xueying Xiao
Summary: This study systematically investigated the influence of salt lake/marine bischofite on the properties of magnesium oxychloride cement (MOC) pastes. The results showed that salt lake bischofite-based MOC had better performance due to lower impurity content compared to marine bischofite-based MOC.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Materials Science, Ceramics
Jing Wen, Heju Wang, Yang Li, Xiaogang Zheng
Summary: Developing highly recyclable photocatalysts is crucial for the industrial application of solar-light driven wastewater treatment. S,N,P-codoped carbon (SNP-C) nanofibers are modified with MoS2 (MoS2/SNP-C) for enhancing the adsorption and photocatalytic efficiency. The in-situ plasma induced sulfurization plays a significant role in generating vacant sites of RhB adsorption and facilitating the rapid transfer of charge carriers.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Environmental
Hao Peng, Yaohan Du, Jiahuan Yong, Congying Huang, Xiaogang Zheng, Jing Wen
Summary: A ZnInGaS4 heterojunction with S vacancies was prepared to enhance solar-light photocatalytic activity for water splitting and Cr(VI) reduction. The optimized ZnInGaS4 exhibited higher H2 evolution rate and better efficiency for Cr(VI) reduction compared to ZnIn2S4 and ZnGa2S4.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Zewei Liang, Jing Wen, Yuanliang Zhou, Tingting Liu, Jinmei Dong, Weixin Zheng, Chenggong Chang, Xueying Xiao, Qiyuan Liu, Xiaogang Zheng
Summary: BiOCl0.5X0.5 (X = F, Br, and I) heterojunctions were prepared for the solar-light induced photodegradation of tetracycline hydrochloride (TCH). Among the samples, BiOCl0.5I0.5 exhibited the best photocatalytic activity. The Z-scheme junction between BiOCl and BiOI facilitated the efficient separation and migration of photo-generated charge carriers, and the narrow band-gap structure of BiOCl0.5I0.5 microspheres favored visible-light harvesting. The solar-light deactivation of BiOCl0.5I0.5 was attributed to the change in valence states induced by photo-corrosion.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Construction & Building Technology
Jinmei Dong, Weixin Zheng, Chenggong Chang, Jing Wen, Xueying Xiao
Summary: Salt lake magnesium phosphate cement (SLMPC) was prepared using salt lake lithium extraction magnesium slag (MS) as raw material, and borax was added to investigate its effects on water-cement ratio, setting time, compressive strength, and strength retention of SLMPC. The results showed that the incorporation of borax could reduce the water-cement ratio, delay the setting time, and reduce the 7-day compressive strength of SLMPC, but significantly improve its water resistance.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Agricultural Engineering
Yuanliang Zhou, Zewei Liang, Jing Wen, Tingting Liu, Jinmei Dong, Chenggong Chang, Xiaogang Zheng, Weixin Zheng
Summary: In order to enhance the adsorption activity of Ficus virens biochar for dye removal, S-doped biochar was co-modified by MgO and B2O3 via one-pot sulfurization. Mg-B/S-BC demonstrates higher adsorption capacity than S-doped biochar, MgO/biochar, and B2O3/biochar for rhodamine B. The adsorption capacity of optimal Mg-B/S-BC is 1195.25 mg g-1, and it decreases to 1142.97 mg g-1 after nine cycles.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Chemistry, Physical
Chenggong Chang, Lingyun An, Jinmei Dong, Weixin Zheng, Jing Wen, Fengyun Yan, Xueying Xiao
Summary: Using various analysis techniques, the study investigates the degradation process of magnesium oxychloride cement (MOC) in outdoor dry-wet environments. As the number of dry-wet cycles increases, water molecules gradually penetrate the MOC samples, leading to the hydrolysis of P5 and hydration reactions of unreacted active MgO. This results in the appearance of cracks on the surface and warped deformations. The microstructure of the MOC samples changes from a gel state to a flake shape, with a loose structure. The compressive and flexural strength of the samples decrease significantly after multiple cycles.
