Journal of Energy Chemistry
·
2013
·
IF 0
Lipeng Zhou,Beibei Dong,Si Tang,Hong Ma,Chen Chen,Xiaomei Yang,Jie Xu
Sulfonated carbon as a strong and stable solid acid catalyst exhibited excellent catalytic performance in various acid-catalyzed reactions. Here, sulfonated carbon, as catalyst for oxidation reaction, was prepared via the carbonization of starch followed by sulfonation with concentrated sulfuric acid. N 2 physisorption , X-ray diffraction, Fourier transform infrared spectroscopy, X-ray fluorescence and acid-base titration were used to characterize the obtained materials. The catalytic activity of sulfonated carbon was studied in the oxidation of aldehydes to carboxylic acids using 30 wt% H 2 O 2 as oxidant. This oxidation protocol works well for various aldehydes including aromatic and aliphatic aldehydes. The sulfonated carbon can be recycled for three times without obvious loss of activity.
研究领域:
化学
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催化科学
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产品关联
DOI
FUEL PROCESSING TECHNOLOGY
·
2022
·
IF 8.129
Haiping Yang,Shuaishuai Lei,Kun Xu,Yang Fang,Xu Chen,Yingquan Chen,Xianhua Wang,Hanping Chen
In this study, a new method for the efficient preparation of levoglucosenone (LGO) by biomass catalytic pyrolysis with sulfonated carbon catalyst was proposed. The influence of pyrolysis temperature and the mass ratio of catalyst to glucose or cellulose on the formation of LGO was systematically studied. The results show that when the mass ratio of glucose to sulfonated carbon is 1:1 and the pyrolysis temperature increases from 300 °C to 500 °C, the LGO selectivity first increased and then decreased, reaching a maximum value of 46.4% at 400 °C. Meanwhile, the yield of LGO increased steadily with the increase in pyrolysis temperature, and the yield of LGO was reached a maximum value of 2.48 wt% at 500 °C. However, with the increasing amount of catalyst, the selectivity of LGO increased steadily, while the yield of LGO increased at first and then decreased. Overall, the optimum pyrolysis temperature and mass ratio of the glucose/sulfonated carbon catalyst for LGO production were 400 °C and 1:1, respectively. Density functional theory calculations showed that the catalytic action of sulfonated carbon changed the reaction pathway of glucose pyrolysis, making glucose more inclined to form LGO through a 1,2 dehydration mechanism.
研究领域:
生物质能
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催化化学
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产品关联
DOI
高影响因子
WASTE MANAGEMENT
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2020
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IF 5.448
Xiaoyun Li,Xuebin Lu,Min Liang,Rui Xu,Zhihao Yu,Bingyu Duan,Lefu Lu,Chuanling Si
Catalytic conversion of xylose and the hemicellulose fraction of waste biomass to furfural is important for the valorization of waste lignocellulose. Here, a clean and efficient catalytic system consisting of sulfonated carbon microspheres catalysts and γ-valerolactone was developed for the upgrading of xylose and waste lignocellulose to the furfural in one-pot. Sulfonated carbon microspheres (C Co S) with Brønsted and Lewis acid sites were prepared to yield furfural. The mesoporous structures were facilitated by introduction of Co element in xylose hydrothermal process, and the density of Brønsted acid sites were improved by the sulfonation. The furfural yield from xylose reached 75.12% using C Co S as catalyst at 170 °C for 30 min in a γ-valerolactone/water (17/3 v/v) solvent. As typical Brønsted acid, the SO 3 H groups on the surface of C Co S catalyst is essential for catalytic dehydration xylose to furfural. Additionally, the mesoporous structures of C Co S improved the mass transfer in the furfural production process. The catalytic system was applied in the conversion of real biomass (including corncob, corn straw and Eucalyptus sawdust) to evaluate the possibility of application. These three biomass species all reached excellent furfural yields, which were more than 70%. This work provided a catalytic strategy for effective conversion of xylose and biomass to furfural.
研究领域:
化学工程
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环境科学
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产品关联
DOI
PubMed
高影响因子
Materials Today Chemistry
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2021
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IF 8.301
Y. Hu,M. Li,Z. Gao,L. Wang,J. Zhang
Sulfonated carbon dots (SCDs) were synthesized from plant leaves via continuously hydrothermal treatment by hydrogen peroxide and sulfuric acid, used as catalyst for converting fructose to 5-hydroxymethylfurfural (HMF). Owing to nanosize effect and moderate acidic intensity, SCDs could thoroughly distribute in the solvent with an improved interfacial compatibility and selectively convert fructose to HMF. Under the optimal condition, the yield of HMF was 92.6% along with a fructose conversion of 100%, benefiting from a low activation energy of 52.9 kJ/mol when dimethylsulfoxide was used as solvent. The SCDs catalyst can be recovered, after six recycles, the fructose conversion and HMF yield were remained 66.1% and 56.2% under condition with incompletely conversion of fructose, respectively. This work provides a sustainable route to prepare carbon dots with a superior catalytic performance for converting biomass to important biobased platform chemicals.
研究领域:
化学工程
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材料科学
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可再生资源利用
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
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2019
·Vol. 9
·期 9
·5142-5150
·
IF 3.049
Zaizhi Liu,Yanlong Qi,Mengling Gui,Chunte Feng,Xun Wang,Yang Lei
A Brønsted acid ionic liquid, 3-methyl-1-(4-sulfonylbutyl) imidazolium hydrogensulfate ([HO3S(CH2)4mim]HSO4), was used for the first time for the preparation of a sulfonated carbon catalyst. The catalyst was prepared from the residue obtained after recovery of the essential oil from the leaves of Cinnamomum longepaniculatum. The sulfonated carbon catalyst with an amorphous structure attained high acidic efficiency at a sulfonation temperature of 200 °C for 2 h of sulfonation time, and was characterised. SEM morphologies revealed that the carbon catalyst consisted of uniform carbon microspores. FTIR analysis, elemental analysis, and X-ray photoelectron spectroscopy revealed that the sulfonic acid group was successfully introduced on the surface of the sulfonated carbon catalyst. The result of TG analysis showed that the obtained sulfonated carbon catalyst has high thermal stability. Good acid and catalytic activity of the obtained sulfonated carbon catalyst were observed for the preparation of ellagic acid and gallic acid, which is comparable to those of diluted sulfuric acid and a sulfonated carbon catalyst that had been prepared with concentrated sulfuric acid. The excellent reusability of the sulfonated carbon catalyst was also confirmed by repeated experimental trials. In summary, the sulfonated catalyst derived from the residue obtained after recovery of essential oil from the leaves of C. longepaniculatum is an economic, eco-benign and promising substitute for traditional mineral acid catalysts for acidic catalysis in industrial applications.
研究领域:
化学工程
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环境科学
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植物学
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产品关联
DOI
PubMed
高影响因子
FUEL
·
2020
·
IF 5.578
Yuan-Mei Song,Ru-Quan Liang,Fei Wang,Dan-Hui Zhang,Liu Yang,Deng-Bo Zhang
The hydrate-based technology has been viewed as a great potential approach for the natural gas storage and transportation, whose commercialization however is challenged by the limited energy storage efficiency and slow formation kinetics. In this work, we used carbon nanotubes (CNTs) as carriers and covalently grafted functional group of -SO 3 - (similar to the hydrophilic group contained in sodium dodecyl sulfate) onto the nano-carriers surface to prepare a novel promoter, sulfonated carbon nanotubes (SCNTs). The SCNTs nanofluid showed higher dispersity and stability than the pristine CNTs (PCNTs). In the methane hydrate formations, the high methane storage capacity of 142 v/v in the SCNTs nanofluid was achieved, whereas 50–65 v/v was obtained with the oxidized CNTs (OCNTs) or PCNTs as promoter. Interestingly, the larger number of sulfonate groups grafted on CNTs, the shorter hydrate formation period and the smaller hydrate reaction stochasticity were obtained. The formation rate was enhanced from 0.237 mmol/(mol water·min) to 0.413 mmol/(mol water·min) when SCNTs concentration grew from 25 mg/L to 150 mg/L. Additionally, the SCNTs kept excellent recycling performance at ten reuses in the methane hydrate formations, which was meaningful to the actual hydrate-based gas storage and transportation.
研究领域:
化学工程
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能源科学
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产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
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2021
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IF 8.198
Xianghai Kong,Srinivasan Vinju Vasudevan,Mengjie Cao,Jin Cai,Hanping Mao,Quan Bu
A simple hydrothermal carbonization method was used to synthesize sulfonated carbon catalysts from glucose in reflux conditions. The concentration of sulfuric acid played a specific role in preparing sulfonated hydrothermal carbon microsphere (SHCS) and sulfonated hydrothermal carbon (SHC) catalysts. All of the samples were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and Brunauer–Emmett–Teller (BET) analyses, and the influence of different reaction conditions on 5-hydroxymethylfurfural (HMF) production from fructose was investigated in microwave conditions. The effect of microwave input power and energy efficiency on HMF formation was determined to understand the role of sulfonated carbon catalysts in a water medium. Results showed that the catalyst with a moderate sulfur content and spherical stacking was beneficial to enhance the heat-transfer efficiency on the catalyst surface during microwave-assisted heating, thus effectively enhancing the energy efficiency of the fructose dehydration reaction. The optimum reaction condition for HMF production was obtained at microwave input power 60 W, reaction temperature 186 °C, and reaction time 10 min. At this condition, the HMF yield and the energy efficiency were 88.3 mol % and 0.147 mmol kJ–1, respectively. Furthermore, the prepared catalyst showed good recyclability, wherein a simple reactivation process could rapidly recover the catalyst activity with 1 M sulfuric acid solution. This work provides a way to design a potential microwave-responsive catalyst that improves the energy efficiency and HMF yield for the fructose–HMF conversion process.
研究领域:
化学工程
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催化科学
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可再生资源利用
✓ 已验证
DOI
高影响因子
Journal of Environmental Chemical Engineering
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2025
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IF 7.2
Hongtao Cui,Zhongyi Zhu,Fengjie Chen,Yuanyuan Han,Ru Li
Forward osmosis (FO) attracted more attentions to alleviate water crisis and energy shortage because of high water recovery, mild operating conditions and high anti-fouling performance. In this paper, poly(sodium- p -styrenesulfonate) (PSS) was adopted to prepare sulfonated carbon nanotubes (SCNTs) through an in-situ polymerization method to enhance its hydrophilicity. And SCNTs were then incorporated into a polyethersulfone (PES) solution to fabricate SCNTs-FO membranes which were subsequently applied to the treatment of simulated dye wastewater. The results indicated that the hydrophilicity of the SCNTs-FO membrane was significantly increased. The 0.06 wt%SCNTs-FO membrane had the lowest water contact angle that was 56.14°, showing a 56.6 % reduction compared with the pristine membrane. Meanwhile, more coherent nanochannels were formed inside the support layer, which facilitated the rapid passage of water molecules. In the active layer facing draw solution mode, with 1 mol/L NaCl as the draw solution, the water flux of the 0.06 wt%SCNTs-FO membrane reached 6.54 LMH, which was approximately three times higher than that of the pristine membrane. In addition, the J s / J w ratio decreased to 0.003 g/L which was lower than that of the relevant literature. It demonstrated that the selectivity of the SCNTs-FO membrane was obviously enhanced. After 9 hours anti-fouling test in methylene blue solution, the flux recovery rate of the membrane after the first cleaning with C 2 H 5 OH was the highest. And the water flux recovery of the 0.06 wt%SCNTs-FO membrane after cleaning was stable, which predicted that it had good anti-fouling stability and showed great application potential in the treatment of dyeing wastewater.
研究领域:
环境科学
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材料科学
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水处理技术
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2024
·
IF 6.7
Tingwei Zhang,Yongcan Jin,Huining Xiao
Sulfonated carbon/γ-Al 2 O 3 composites (AlSC-x, x = 1, 2, 3) were successfully prepared by the three-step method of impregnation-carbonization-sulfonation. The introduction of sulfonated sucrose-based carbon onto nano-γ-Al 2 O 3 enhanced its Brønsted acidity and weakened the original Lewis acidity. The Brønsted/Lewis acidity of the composite catalysts can be regulated by controlling the sulfonated carbon intake. AlSC-1 containing suitable Brønsted/Lewis acidity showed the best catalytic performance for converting glucose to 5-hydroxymethylfurfural (HMF). In monophasic DMSO/H 2 O (2.0/0.2 mL), an HMF yield of 62.3 % was achieved at 160 °C and 4.0 h when 0.02 g of glucose and 0.02 g of AlSC-1 were used. Adding a moderate amount of water into DMSO is crucial to improve HMF selectivity, and the DMSO/H 2 O system exhibited superior performance to other solvent systems, such as pure water, 1,4-dioxane/H 2 O, and GVL/H 2 O. More importantly, the recyclability of AlSC-1 was pretty good. In addition, AlSC-1 also exhibited much better performance than the other composite catalysts, including sulfonated carbon/nano-TiO 2 , sulfonated carbon/nano-ZrO 2 , and sulfonated carbon/nano-SnO 2 .
研究领域:
化学工程
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催化科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of the Taiwan Institute of Chemical Engineers
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2021
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IF 5.876
Xin Li,Guoying Wang,Yawen Hu,Yves Iradukunda,Fenfang Luo,Kaiqiang Yi,Gaofeng Shi
Background In order to replace petrochemicals , there is an increasing demand for environmentally friendly new biochemicals, and 5-hydroxymethyl furfural is one such product. Methods In this paper, sulfonated carbon-titanium dioxide composite nanofiber tube catalyst was prepared by electrospinning and used for the dehydration of carbohydrates into 5-hydroxymethylfurfural in aqueous/ethyl acetate biphasic solution. The catalyst showed good activity in preparing of 5-hydroxymethylfurfural using fructose and glucose as raw materials, with yields of 75.47% and 42.44% of 5-hydroxymethylfurfural. In addition, the catalyst still had catalytic effect when starch and cellulose as the reactants. Significant findings Results showed that the catalytic ability of the catalyst was found to be significantly better than that of a single sulfonated carbon or titanium dioxide, at the same time, the catalyst can be used multiple times and is easy to regenerate. Besides, this study investigated the purification process of 5-hydroxymethylfurfural and finally obtained 95.34 wt.% purity of 5-hydroxymethylfurfural.
研究领域:
生物化学
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材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
BIORESOURCE TECHNOLOGY
·
2025
·
IF 9
Hong-li Ma,Ming-fu Li,Ying-chuan Zhang,Qing-hua Huang,Li-qun Jiang,Zhen Fang
The hydrolysis of levoglucosan (LG)–the major component of biomass pyrolysis oil–is the crucial step to bridge pyrolysis and fermentation. This study reports a series of sulfonated carbon catalysts (SCCs) as sustainable Brønsted acids for LG hydrolysis, which exhibit an excellent glucose selectivity over other hydration products ( e.g., 5- hydroxymethylfurfural and light oxygenates). Notably, SCCs maintain a LG conversion rate of 95 % and a glucose yield of 90 % afterfour cycles of batch operations. Time-of-flight mass spectrometry and theoretical calculations further clarify the hydrolysis mechanism, as water-derived protons are activated by sulfonate groups of SCCs and hydrolyze LG through C O bond cleavage and hydration. Moreover, SCC-catalyzed hydrolysate is used in fermentation to produce bioethanol, enabling the maximal yield of ∼ 99 %, which is comparable to pure glucose commodity and much efficient than that from the aqueous acid hydrolysis. This study provides a sustainable alternative to mitigate the demand on heterogeneous catalysts for pyrolysis oil upgrading towards net-zero production of biofuels and biochemicals.
研究领域:
催化化学
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生物化学
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绿色化学
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可再生能源
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化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2020
·Vol. 8
·期 13
·6311-6318
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IF 11.301
Haiyu Xu,Yuanyuan Xie,Enwen Zhu,Yan Liu,Zhuqun Shi,Chuanxi Xiong,Quanling Yang
With increasing interest and demand for wearable sensor devices, fabricating a flexible hydrogel film sensor combining high strength and high sensitivity for monitoring human physiological signals is necessary but remains challenging. Recently, we have successfully prepared flexible piezoresistive electronic skin (E-skin) using 2,2,6,6-tetramethylpiperidinyl-1-oxyl (TEMPO)-oxidized cellulose nanofibrils (TOCNs) and sulfonated multi-walled carbon nanotubes (SCNTs). The flexible sensor exhibited an extremely high sensitivity of about 4.4 kPa−1, an ultrafast response time below 10 ms, an ultralow detection limit of 0.5 Pa, good stability (>11 000 cycles) and a mechanical strength of up to 184 MPa. At the same time, the pressure sensor had the advantages of a simple preparation process, low time consumption, low cost and good biocompatibility. With the popularity of smart terminal devices, the flexible sensor has great application prospects in the fields of future wearable electronic devices, health monitoring, motion monitoring, intelligent prosthetics, and artificial intelligence.
研究领域:
材料科学
·
纳米技术
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生物医学工程
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可穿戴技术
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传感器
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）