COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Tingting Yan,Mingzhu Yang,Binglei Song
Carboxylate surfactants have excellent properties, including low irritancy and biocompatibility. However, the solubility of carboxylate surfactants is usually low at ambient temperatures, which limits their applications in many fields. Introducing a hydrophobic branch is an effective strategy to disrupt molecular packing, thereby enhancing solubility and promoting advanced self-assembly behavior. Herein, by introducing p-tert-butylphenoxy groups at the α-position of sodium laurate, sodium myristate, and sodium palmitate respectively, a series of carboxylate surfactants (abbreviated as C n -p-(t-bu)ph-Na, n = 12, 14, 16) were synthesized. These surfactants exhibit high water solubility and excellent self-assembly capability. Among them, C 12 -p-(t-bu)ph-Na achieved a solubility of 207.7 mmol∙L -1 at 25 °C, with Krafft points below room temperature. X-ray diffraction (XRD) analysis indicated that the bulky substituent induced a tilted, less compact molecular packing in the solid state. Surface tension measurements showed that the critical micelle concentration ( cmc ) was reduced by more than one order of magnitude compared to conventional carboxylates, with the surface tension at cmc ( γ cmc ) reduced to approximately 28 mN·m -1 . Rheological analysis and cryo-TEM confirmed that C 12 -p-(t-bu)ph-Na and C 14 -p-(t-bu)ph-Na formed entangled wormlike micelles without additives, imparting pronounced viscoelasticity. These findings establish rigid hydrophobic branching as a simple and effective design strategy for developing bio-based surfactants with tunable solubility and dynamic aggregation behaviors, offering new opportunities in controlled release, personal care, and advanced soft materials.
研究领域:
化学
·
材料科学
·
生物学
✓ 已验证
产品关联
DOI
高影响因子
FUEL PROCESSING TECHNOLOGY
·
2018
·
IF 3.956
Longfei Tang,Songjiang Chen,Shiwei Wang,Xiuxiang Tao,Huan He,Lei Zheng,Chenyan Ma,Yidong Zhao
The present work investigated the feasibility of heterocyclic sulfur (HS) removal for coal utilizing potassium tert-butoxide and hydrosilane system. Changes of sulfur forms with treatment time in Xinyu (XY) coal were determined by XANES . Results showed that reductions of total sulfur and organic sulfur for XY coal were 55% and 53%, respectively. >85% sulfoether and thiophene sulfur were removed after treated for 4 h, suggesting that the HS could be removed to a high extent from coal. However, contents of sulfonate and sulfonic ester increased with treatment time due to the hydrolysis and oxidation of intermediate products containing Si S bands. Furthermore, it indicated that the HS could be removed selectively from coal without destroying the macromolecular structure of coal based on analysis of desulfurization mechanism. These findings suggested that the desulfurization of refractory HS in coal could be obtained using the potassium tert-butoxide/hydrosilane reductive system, which provided a reference for desulfurization of high organic sulfur coal .
研究领域:
能源化学
·
煤化工
·
环境化学
·
应用化学
·
清洁燃料技术
✓ 已验证
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 109
·107239-107245
·
IF 3.289
Yuanyuan Wang,Hua Song,Xinglong Sun
Fe2O3 (x)/Hβ catalysts with different Fe2O3 loadings (x) were successfully prepared and characterized by XRD, SEM, TEM, ICP, BET, NH3-TPD and Py-IR. With selective alkylation of toluene with tert-butyl alcohol to produce 4-tert-butyltoluene as a probe reaction, the effects of the different Fe2O3 loadings on channel structures, acidity and catalytic performance over Hβ were studied. The results showed that modification of Hβ with Fe2O3 could adjust pore structures and decrease the total acidity, especially the strong acidity of Hβ. The parent Hβ exhibited the highest toluene conversion of 58.4% with the lowest PTBT selectivity of 67.3%. The low para-selectivity over parent Hβ could be attributed to the low shape-selective action of 12-ring portals of Hβ and the isomerization of the formed PTBT to MTBT. Upon loading of Fe2O3, the toluene conversion of Fe2O3 (x)/Hβ catalysts decreased slightly, but the PTBT selectivity increased significantly. A toluene conversion of 54.7% with PTBT selectivity of 81.5% was observed over Fe2O3 (20%)/Hβ at 190 °C after 4 h. The narrowed pores after loading the Fe2O3 were beneficial to increasing the selectivity to PTBT, since PTBT with a lower kinetic diameter (0.58 nm) can diffuse through the narrowed pores of Fe2O3 (x)/Hβ more easily than MTBT (0.65 nm). In addition, the decrease in number of strong acid sites and deactivation of acid sites on the surface are beneficial to increasing the selectivity to PTBT by suppressing further isomerization of the formed PTBT on acid sites.
研究领域:
催化化学
·
材料化学
·
化学工程
·
有机反应工程
·
多相催化
✓ 已验证
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2020
·
IF 5.065
Xiangyang Liu,Tian Lan,Chengjie Wang,Manh Quang Nguyen,Ying Zhang,Maogang He
Tert-butanol is a good additive for improving gasoline performance, but as two of the most important thermodynamic properties, the critical temperature ( T c ) and critical pressure ( p c ) of tert-butanol and alkane systems have not been studied. In this work, the experimental data of the T c and p c of five binary systems (tert-butanol + cyclohexane , tert-butanol + n-hexane, tert-butanol + n-heptane, tert-butanol + n-octane, and tert-butanol + n-nonane) and a ternary system (tert-butanol + n-heptane + n-octane) were obtained using a flow method. The T c and p c of the binary systems were fitted using the Redlich–Kister equations with maximum average absolute relative deviations (AARDs) of 0.19% and 0.36% for T c and p c , respectively. The T c and p c for tert-butanol + n-heptane + n-octane were correlated by Singh and Sharma's equations and Cibulka's equations with AARDs less than 0.09% and 0.32%, respectively. The experimental data of T c and p c were also used to verify and improve the accuracy of our previous prediction model.
研究领域:
热力学
·
化学工程
·
物理化学
✓ 已验证
DOI
高影响因子
Photonics Research
·
2021
·Vol. 9
·期 5
·781-791
·
IF 7.08
Tengteng Li,Qingyan Li,Xin Tang,Zhiliang Chen,Yifan Li,Hongliang Zhao,Silei Wang,Xin Ding,Xin Ding,Yating Zhang,Jianquan Yao,Jianquan Yao
The preparation of high-quality perovskite films with optimal morphologies is important for achieving high-performance perovskite photodetectors (PPDs). An effective strategy to optimize the morphologies is to add antisolvents during the spin-coating steps. In this work, a novel environment-friendly antisolvent tert-amyl alcohol (TAA) is employed first to improve the quality of perovskite films, which can effectively regulate the formation of an intermediate phase staged in between a liquid precursor phase and a solid perovskite phase due to its moderate polarity and further promote the homogeneous nucleation and crystal growth, thus leading to the formation of high-quality perovskite films and enhanced photodetector performance. As a result, the responsivity of the PPD reaches 1.56 A/W under the illumination of 532 nm laser with the power density of 6.37 μW/cm2 at a bias voltage of −2 V, which is good responsivity for PPDs with the vertical structure and only CH3NH3PbI3 perovskite as the photosensitive material. The corresponding detectivity reaches 1.47×1012 Jones, while the linear dynamic range reaches 110 dB. These results demonstrate that our developed green antisolvent TAA has remarkable advantages for the fabrication of high-performance PPDs and can provide a reference for similar research work.
研究领域:
材料科学
·
光电技术
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2013
·
IF 3.334
Peini Zhao,Jingcheng Hao
One novel electrochemistry-molecular imprinting sensor for determining tert-butylhydroquinone (TBHQ) in foodstuff was developed. TBHQ-imprinted core–shell nanoparticles (TICSNs) were fabricated using silica nanoparticles as core material. The silica nanoparticles were modified with (3-chloropropyl) trimethoxysilan and polyethylenimine, respectively, and polymerised to form the TICSNs with ethylene glycol dimethacrylate as cross-linker. The specific core–shell structure demonstrates extremely high specific surface area which greatly increases the effective binding sites and improves the recognition capability for model molecules. Under the optimal conditions, the linear range of the calibration curve was 0.1–50.0 mg kg −1 with the detection limit of 0.27 mg kg −1 . The sensor has been successfully applied to the determination of TBHQ in food samples and achieved high sensitivity and selectivity.
研究领域:
分析化学
·
食品安全
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2014
·
IF 2.235
Qi Sun,Cong Zhang,Huan Sun,Hui Zhang
Novel porous magadiite/Al-magadiite heterostructures (PMH/PAMH) and aluminated derivatives of PMH (xAl-PMH, x = Al/Si in feeding) were fabricated upon two-dimensional interlayer cosurfactant-directing TEOS hydrolysis–condensation–polymerization from synthetic Na-magadiite/Na-[Al]magadiite and postgrafting of Al into the interlayer silica framework of PMH from NaAlO2 precursor, respectively. Characterization studies indicate that PMH and PAMH possess high surface area (SA), high thermal stability, and unique supermicro–mesoporous structure upon effective assembly of interlayer mesostructured silica and clay layers but weak Lewis acidity. The xAl-PMH (x = 0.2, 0.4) samples show successful incorporation of Al into interlayer mesostructure of PMH mainly in tetra-coordinated form, leading to greatly increased Lewis acidity and newly created Brønsted acidity together with well-kept layered supermicro-mesoporous porosity and reduced SA (>280 m2/g) while 0.6Al-PMH shows collapsed layers. 0.4Al-PMH exhibits the highest liquid-phase Friedel–Crafts tert-butylation activity of catechol with 93.4% conversion and 80.4% 4-tert-butylcatechol selectivity due to the strongest synergy between the surface acidity and supermicro–mesostructure.
✓ 已验证
产品关联
DOI
高影响因子
GREEN CHEMISTRY
·
2020
·Vol. 22
·期 17
·5656-5665
·
IF 9.48
Lincai Peng,Mengmeng Wang,Hui Li,Juan Wang,Junhua Zhang,Liang He
Both the solvent and catalyst play important roles in the chemoselective transformation of biomass-related compounds to fine chemicals and fuels. We report herein an innovative catalytic strategy for the direct valorization of xylose without external H2 producing high yield of furfuryl alcohol (FA), which is a versatile platform molecule. The solvent tert-butanol served not only as a precursor of the hydrogen honor, but also as a shield to facilitate xylose dehydration and inhibit the polymerization and decomposition reactions of FA. Commercial H4SiW12O40 was found to work as a multifunctional catalyst during the cascade conversion and had good reusability. The underlying catalytic mechanism revealed that the Brønsted and Lewis acid sites co-existed cooperatively to catalyze the xylose dehydration step and the active metal site of W atom adsorbed the hydrogen proton for the transfer hydrogenation of furfural to FA. After the incorporation of the formic acid as a supplemental hydrogen source, an unprecedented FA yield of 90% could be accomplished in a batch reactor under mild conditions. The kinetic behavior describing the conversion of xylose to FA was investigated to monitor the process. The estimated activation energies for xylose dehydration, furfural hydrogenation, and FA decomposition were 85.1, 78.8, and 101.1 kJ mol−1, respectively. This study opens a new avenue for the selective production of FA from hemicellulose-derived pentose in a green and straightforward manner.
研究领域:
化学工程
·
催化
·
绿色化学
·
生物质转化
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2023
·
IF 4.2
Hujian Wu,Qi Wang,Xiaoxin Zhang,Tao Wang
Alkyl anthraquinones play a crucial role as chemical raw materials in the production of hydrogen peroxide as well as intermediates for the synthesis of drugs and dyes. This study focuses on investigating the oxidation reaction of 2,6-di-tert-butylanthracene with hydrogen peroxide, employing Bronsted acidic ionic liquids as catalysts. The optimization of both the anion and cation components within the Brønsted acidic ionic iquids was carried out, revealing that bis(3-propanesulfonic acid-1-imidazole)propylidene bisulfate ([2(Im-PS)-C3][2HSO4]) exhibited the most effective catalytic performance. Furthermore, the Brønsted acidic ionic liquids demonstrated cyclic catalytic activity during the oxidation reaction. Successful preparation of 2,6-di-tert-butylanthraquinone was achieved with a remarkable yield of up to 92%. The recyclability of the ionic liquid suggests that this study will contribute to technical improvements in the original method while concurrently reducing the cost associated with the synthesis of alkyl anthraquinones via the oxidation method.
研究领域:
有机化学
·
催化合成
✓ 已验证
产品关联
DOI
高影响因子
BIOPROCESS AND BIOSYSTEMS ENGINEERING
·
2023
·Vol. 46
·期 9
·1365-1373
·
IF 3.8
Wang Ru,Jia Jianyao,Liu Xue,Chen Yaru,Xu Qing,Xue Feng
Chiral compounds are important drug intermediates that play a critical role in human life. Herein, we report a facile method to prepare multi-enzyme nano-devices with high catalytic activity and stability. The self-assemble molecular binders SpyCatcher and SpyTag were fused with leucine dehydrogenase and glucose dehydrogenase to produce sc-LeuDH (SpyCatcher-fused leucine dehydrogenase) and GDH-st (SpyTag-fused glucose dehydrogenase), respectively. After assembling, the cross-linked enzymes LeuDH-GDH were formed. The crosslinking enzyme has good pH stability and temperature stability. The coenzyme cycle constant of LeuDH-GDH was always higher than that of free double enzymes. The yield of l - tert -leucine synthesis by LeuDH-GDH was 0.47 times higher than that by free LeuDH and GDH. To further improve the enzyme performance, the cross-linked LeuDH-GDH was immobilized on zeolite imidazolate framework-8 (ZIF-8) via bionic mineralization, forming LeuDH-GDH @ZIF-8. The created co-immobilized enzymes showed even better pH stability and temperature stability than the cross-linked enzymes, and LeuDH-GDH@ZIF-8 retains 70% relative conversion rate in the first four reuses. In addition, the yield of LeuDH-GDH@ZIF-8 was 0.62 times higher than that of LeuDH-GDH, and 1.38 times higher than that of free double enzyme system. This work provides a novel method for developing multi-enzyme nano-device, and the ease of operation of this method is appealing for the construction of other multi-enzymes @MOF systems for the applications in the kinds of complex environment. Graphical abstract
研究领域:
生物化学
·
合成生物学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2019
·
IF 5.107
Biming Liu,Zhenxue Liu,Zhiying Liu,Yanhua Xu,Yongjun Sun,Huaili Zheng
Purifying wastewater and saving energy have become important prerequisites for global sustainable development. Currently, the application of various wastewater treatment processes for tert-butyl acrylate production wastewater is still restricted by energy-intensive factors. Aiming at addressing the trade-offs in water-energy nexus in purification of tert-butyl acrylate production wastewater, this study proposed a fluidized/fixed bed treatment system for catalytic oxidation purification of tert-butyl acrylate production wastewater. A high calorific value of rectification residue produced by the production of tert-butyl acrylate was introduced to simultaneously achieve low energy consumption and efficient purification of tert-butyl acrylate production wastewater and rectification residue. The effects of the operating conditions of fluidized and fixed beds and their coupling process on the purification effect of tert-butyl acrylate production wastewater were evaluated. Results showed that the efficiency of purifying tert-butyl acrylate production wastewater and rectification residue using the fluidized/fixed bed treatment system was considerable. The calculation results showed that the thermal balance of the system was enhanced due to the introduction of rectification residue, and the energy-saving rate reached 18%. Tert-butyl acrylate production wastewater was oxidized to small-molecule chemicals by proton transfer and demethylation during degradation process which was investigated by gas chromatography–mass spectrometry. Stability experiments indicated that the average removal efficiency of chemical oxygen demand in fluidized/fixed bed treatment system was 97.0%–98.5% for 600 h of continuous operation. The Cu/Ce/Mn catalyst exhibited good stability. Therefore, fluidized/fixed bed treatment system can effectively purify high-concentration organic wastewater and is a promising technology.
研究领域:
环境科学
·
废水处理技术
✓ 已验证
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2020
·
IF 9.038
Qing Zheng,Nannan Wu,Ruijuan Qu,Gadah Albasher,Wanming Cao,Beibei Li,Nouf Alsultan,Zunyao Wang
4- tert -butylphenol (4-tBP) is a phenolic endocrine disrupting chemical that has attracted great attention due to its wide occurrence, environmental persistence, and possible toxic effects. In this study, we systematically investigated the transformation of 4-tBP in ferrate (VI) oxidation process. The second-order reaction rate constant ( k app ) of Fe(VI) with 4-tBP decreases with solution pH, and the k app value was determined as 295 M −1 ·s −1 at pH 8.0. The removal efficiency of 4-tBP was slightly decreased by Mg 2+ and HCO 3 – , while accelerated at varying degrees by the presence of Cu 2+ and humic acid. Product analysis revealed that 4-tBP was mainly transformed into hydroxylation products, benzene-ring cleavage products, dimers and higher polymerization products via oxygen atom transfer, ring-opening of the benzene ring and radical coupling reaction. Furthermore, initial reactions of 4-tBP were rationalized by theoretical analysis of atom partial charges, frontier electron densities, and spin densities. Nearly complete removal of 4-tBP (20 μM) was achieved after 5 min of reaction in both ultrapure water and natural waters, demonstrating the feasibility of this Fe(VI) oxidation method in treating phenols-contaminated waters.
研究领域:
环境科学
·
化学动力学
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）