SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Yu Wang,Ruoyu Hu,Wenli Liu,Zhaoyou Zhu,Yinglong Wang,Jingwei Yang,Jianguang Qi,Peizhe Cui
In the process of producing low-carbon alcohols from coal, azeotropic waste containing ethanol and n-hexane is generated. To prevent environmental risks and resource waste from solvent loss, this study selected green solvent ionic liquids (ILs) for their separation. First, we screened five anions with high selectivity based on the conductor-like screening model for realistic solvents (COSMO-RS), and through various quantum chemical calculations, we found that the anions play a significant role in the separation of the two components, with [HSO 4 ] − showing the best separation performance. Second, we predicted the phase equilibrium data for ILs containing [HSO 4 ] − in the azeotropic system, considering practical factors such as price and viscosity, and selected [EMIM][HSO 4 ], [BMIM][HSO 4 ], and [HMIM][HSO 4 ] for experiments. The results indicated that simpler cation side chains enhance the separation capability of the system. Then, a toxicity analysis of the ILs ensured their biocompatibility and feasibility. Finally, we established the extraction distillation process and visualized the interactions between the ILs and the azeotropic system through molecular dynamics simulations. This work provides theoretical guidance for the separation of alcohols and alkanes in the industry.
✓ 已验证
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 90
·87461-87468
·
IF 3.289
Qing Ge,Dingshuo Lou,Shui Lu,Wei Zhang,Li Zhang,Xinping Wang
Poly(ionic liquid)s (PILs) have promising potential to form assemblies with ordered structures in organic media, but experimental investigation on the detailed aggregation behavior of PILs has seldom been involved. In this study, a series of N-alkyl imidazolium-based PILs with different chemical composition in their n-propanol solution was investigated by conductivity measurements. TEM images indicate that PILs with long alkyl chains exhibit onion-like multilamellar structures. The thermodynamic parameters suggest that aggregation of PILs in their good solvents (n-PrOH) is spontaneous, driven by entropy change associated with a hydrophobic effect. As increasing alkyl chain length from 8 to 16, the contribution of per alkyl chain to ΔGθm for PIL aggregation is found to decrease by more than 2 times. The nonsolvent (H2O) contribution to change of Gibbs free energy as well as critical aggregation concentration (CAC) decrease linearly with the volume fraction of water in mixed solvents, implying that PIL aggregation becomes more favorable with the addition of nonsolvent. The results mentioned above play an important role in understanding the aggregation process of PIL in an organic solvent and developing functional materials with well-ordered structures.
✓ 已验证
DOI
高影响因子
Catalysis Science & Technology
·
2017
·Vol. 7
·期 21
·5055-5068
·
IF 5.773
Pengyu Niu,Hongjuan Xi,Jun Ren,Minggui Lin,Qiang Wang,Litao Jia,Bo Hou,Debao Li
Highly siliceous ZSM-22 was synthesized under hydrothermal conditions with ZSM-22 seeds. Characterization by FT-IR and 1H and 29Si NMR spectroscopy confirms that due to the existence of defective sites in the siliceous ZSM-22, acidic silanol groups including vicinal silanol and silanol nests are detected. Acidic silanol groups are considered as the acid sites of siliceous ZSM-22. As a result, siliceous ZSM-22 shows much lower acid site density and lower acid strength than silica–alumina ZSM-22 which contains hydroxyl groups bridging Si and Al as acid sites. In n-dodecane isomerization, Pt/siliceous ZSM-22 shows much higher isomer selectivity than Pt/silica–alumina ZSM-22. Furthermore, a lower loading amount of Pt on siliceous ZSM-22 (about 0.2 wt% Pt) can lead to high isomer selectivity. Owing to the acidic silanol groups and the low acid site density of siliceous ZSM-22, a good balance between metal and acid function in Pt/siliceous ZSM-22 is achieved, which results in a lower allowable Pt loading value and higher isomer selectivity.
✓ 已验证
DOI
高影响因子
Frontiers of Materials Science
·
2018
·Vol. 12
·期 3
·214-224
·
IF 1.478
Chen Mengna,Zeng Peiyuan,Zhao Yueying,Fang Zhen
CoP is a candidate lithiumstorage material for its high theoretical capacity. However, large volume variations during the cycling processes haunted its application. In this work, a four-step strategy was developed to synthesize N-doped carbon nanotubes wrapping CoP nanoparticles (CoP@N-CNTs). Integration of nanosized particles and hollow-doped CNTs render the as-prepared CoP@N-CNTs excellent cycling stability with a reversible charge capacity of 648 mA·h·g −1 at 0.2 C after 100 cycles. The present strategy has potential application in the synthesis of phosphide enwrapped in carbon nanotube composites which have potential application in lithium-ion storage and energy conversion.
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Chen Wang,Shugang Wang,Junkai Zhang,Wenji Song,Jihong Wang
The growing demand for efficient thermal management has increased the importance of phase change materials (PCMs). Microencapsulation technology mitigates the leakage issue of liquid-state PCMs. However, enhancing the thermal conductivity and structural stability of microencapsulated PCMs (MEPCMs) remains a challenge. Graphene oxide (GO) and its chemically functionalized derivatives have shown great potential in enhancing the performance of MEPCMs. In this study, GO and octadecylamine-grafted GO (GO-ODA) were employed as thermally conductive fillers to modify n -octadecane@melamine-formaldehyde resin microcapsules. Four formulations were developed by varying the spatial distribution of GO and GO-ODA within the microcapsules. The dispersion of GO-ODA in the core was found to reduce defects in the shell structure, while distributing the additives across the core, interface, and shell promoted the formation of a continuous thermal conduction network. The experimental results indicate that, with a filler content of 0.2 wt%, the thermal conductivity increased by 5.8 times, reaching 0.587 W/(m·K), compared to the unmodified MEPCM with a value of 0.086 W/(m·K). Additionally, the leakage rate was reduced by 87.5%, significantly enhancing the structural stability of the microcapsules.
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2025
·
IF 3.8
Yang Qian,Zhang Yong,Zhang He,Yang Zi,Feng Yanruyu,Ye Bengui,Gong Puyang,Qian Guangsheng,Li Dapeng
Sexual dimorphism plays a critical role in disease pathophysiology, but the subtlety and complexity of these differences, along with a lack of precise comparative methods, hinder the advancement of precision medicine and drug development. This limitation is particularly evident in metabolic dysfunction–associated steatotic liver disease (MASLD), where sex-specific molecular mechanisms remain insufficiently understood. To address this gap, we employed an advanced integrative N-glycoproteomics and proteomics approach to systematically analyze sex-biased molecular signatures in primary mouse hepatocytes (PMHs) under healthy and MASLD conditions. Our analysis identified 280 sex-biased proteins and 39 sex-biased N-glycosites, and KEGG enrichment revealed that female-biased molecules were primarily involved in lipid metabolism, while male-biased molecules were associated with inflammation and cytoskeletal remodeling. A combined dataset of 302 sex-biased molecules was further analyzed using protein–protein interaction (PPI) analysis and Rc value calculations, resulting in the identification of 21 hub proteins and 2 hub N-glycosites as MASLD-associated sex-biased signatures. Notably, MASLD amplified proteomic sex differences while attenuating them in N-glycosylation. Western blot validation of key signatures, including female-biased MVK and male-biased LGALS3, highlighted distinct molecular adaptations between the sexes in MASLD progression. Our study introduced an advanced analytical framework for high-resolution comparative molecular profiling by integrating N-glycoproteomics with proteomics, providing valuable insights into sex-biased molecular signatures, enhancing preclinical model development, and advancing sex-specific therapeutic strategies in MASLD research and broader biological systems. Graphical
✓ 已验证
产品关联
DOI
PubMed
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Chenxiang Feng,Wei Jian,Junxiu Chen,Agula Bao
The environmental problems caused by excessive CO2 emissions have made the development of adsorbent materials for capturing CO2 an important topic. N-doped porous carbon materials are attractive for CO2 adsorption because of their large specific surface area, porous structure, and multiple active sites. S and N are known to work well together as codopants, but the effects of S on N and the synergistic effects of S and N on carbon materials need to be clarified. In this study, N and S codoped porous carbon samples with an ultramicroporous structure were prepared by using lignin as the carbon source and thiourea as the sulfur source. The prepared samples had a specific surface area of up to 1723 m2/g and N and S contents of up to 1.60 at % and 0.23 at %, respectively. In tests, the best-performing sample had a CO2 adsorption capacity of 3.58 mmol/g at 298 K and 1 bar, which can be attributed to ultramicropores (<1 nm) making up 67.8% of the pore volume. S doping had the synergistic effect of increasing the pyrrole N content on the sample surface, which increased the CO2 adsorption capacity. The present study provides insights into using N and S codoping to develop high-efficiency carbon-based adsorbents for CO2 capture.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Nano
·
2025
·
IF 16
Yanrong Wang,Shigui Qiu,Shengwen Tan,Huaizhu Wang,Xuemei Wang,Chenxi Zheng,Lubin Ni,Guowang Diao,Caixing Wang,Zhong Jin
To synergistically combine the features of high specific capacity of n-type organic materials with the high voltage of p-type organic materials, bipolar phenolthiazine-based cathodes with p-type/n-type structures are gaining increased attention for aqueous zinc-ion batteries (AZIBs). Nevertheless, their small molecular structure often leads to dissolution during cycling. To address the challenge, a bipolar poly(phenothiazine iodide-3,3′-diaminobenzidine), abbreviated as P(PTD-DAB), was synthesized as a cathode material. Through comprehensive spectroscopic analyses, we elucidated a cooperative p-type/n-type dual-ion storage mechanism. Specifically, the N atom in the phenothiazine core stores Zn2+ or H+ cations via n-type reactions, while the N atoms connecting phenothiazinium tetraiodide and 3,3′-diaminobenzidine monomers, along with S atoms, act as p-type active sites for storing OTF– anions. The material delivers an average operating voltage of 1 V and achieves a high specific capacity of 211.8 mAh g–1 at a low current density of 0.1 A g–1. Additionally, it shows 90% capacity over 3600 cycles at a high current density of 3 A g–1 while sustaining robust stability at a high mass loading of active cathode (10 mg cm–2). Furthermore, flexible belt-shaped cells maintain 88% capacity retention over 550 cycles at 3 A g–1 even when subjected to repeated bending conditions. This work represents a great advancement in developing bipolar polymers for high-performance AZIBs and offers valuable insights into their design principle and functionality.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2019
·
IF 3.571
Yu Lu,Jie Liu,Yue Jia,Yuerong Yang,Qinghui Chen,Lujia Sun,Shuang Song,Linjuan Huang,Zhongfu Wang
Human milk oligosaccharides are complex carbohydrates with multibiofunctional health benefits to newborns. Human milk free oligosaccharides (HMOs) are well characterized. However, changes in the N/O-glycome during lactation are poorly reported. Herein, we qualitatively and quantitatively investigated N/O-glycome profiles and their alteration in human milk at different lactation stages. N-Glycans were mainly fucosylated and nonsialylated, nonfucosylated throughout lactation. O-Glycans mainly consisted of sialylated and nonsialylated, nonfucosylated in colostrum and transitional milk, and fucosylated and nonfucosylated, nonsialylated in mature milk. Fucosylated and sialylated N-glycans gradually decreased and increased, respectively, as lactation progressed; O-glycans showed the reverse. Interestingly, changes in HMO abundance decreased during lactation, complementing HMG N/O-glycome changes. In conclusion, temporal HMG glycosylation changes provide the groundwork for developing infant formula that is closer to breast milk at different lactation stages.
✓ 已验证
DOI
PubMed
高影响因子
Energy Material Advances
·
2024
·
IF 14.8
Xin Wu,Peiyao Liu,Bingchen Huo,Yiyang Li,Shuang Liu,Yifan Lv,Cun-Yue Guo
Organic thermoelectric materials are not only used in low-grade waste heat recovery but also have frontier applications in sensors, wearable self-powered devices, biomaterials, and smart materials with the development of flexible electronics. However, investigation on the thermoelectric performance of single-walled carbon nanotubes (SWCNTs) comparable to that of conducting polymers and their composites with SWCNTs has been rarely attempted, and there were few reports on SWCNTs alone as organic thermoelectric materials. Certainly, SWCNTs possess high Young’s modulus, high thermal stability, flexibility, lightweight, easily controllable doping level, and facile p–n transition, while the mechanism of molecular doping of SWCNTs remains to be well understood. Here, facile solution processing achieved the enhancement of p-type and n-type thermoelectric performance of SWCNTs. Small-molecular-weight polyethylene glycol treatment improved electrical conductivity and the Seebeck coefficient of SWCNTs (p-SWCNTs) simultaneously, with the power factor of 303.17 ± 46.25 μW·m−1·K−2. Small amount of polyethylenimine doping made the Seebeck coefficient of SWCNTs (n-SWCNTs) turn negative and rendered great air stability of n-SWCNTs. The electrical conductivity and power factor of n-SWCNTs reached 1,702.56 ± 164.13 S·cm−1 and 418.49 ± 46.30 μW·m−1·K−2 at 298 K, respectively. The power factor of n-SWCNTs got even higher at 319.5 K in vacuo, reaching a high value of 643.35 μW·m−1·K−2. Finally, mechanism study in this work provided inspiration and guidance for the application of these types of dopants in the performance improvement of SWCNTs.
✓ 已验证
DOI
高影响因子
FUEL PROCESSING TECHNOLOGY
·
2025
·
IF 7.7
Wei Zhang,Jiangnan Xiang,Yuting Wang,Mengxi Ma,Yan Wang,Bo Qin,Weijiong Dai,Binbin Fan,Jiajun Zheng,Ruifeng Li
In this paper, a one-dimensional ten-membered ring microporous molecular sieve ZSM-48 is employed as a model catalyst, with the number and positional distribution of acid sites in ZSM-48 molecular sieve adjusted by regulating the temperature of templating agent exfoliation. XRD, FT-IR, SEM, TG, NH 3 -TPD, N 2 adsorption-desorption, and the zero-length column (ZLC) method are used for characterization and analysis. The decrease in the distribution depth of acid sites within the microporous channels of ZSM-48 will not only significantly affects the hydroisomerization performance of n -dodecane (resulting in a final yield of isododecane of more than 80 %) but also influences the yield ratio of multi-branched and mono-branched isomers. After the conversion is stabilized, the yield ratio of multi-branched to mono-branched isomers for Z-48-350 is 1.4 to 2.1 times higher than that for Z-48-550. Furthermore, acid site distribution depth profoundly influences reactant diffusion, with Z-48-120 exhibiting a 115 % higher effective diffusion constant than Z-48-550 at 140 °C. Shortening the distribution depth of acid sites in the micropores does not significantly change the product distribution of n -dodecane monomethyl isomers but markedly suppresses the cracking reaction due to reduced diffusion limitation of olefinic intermediates. This enables efficient and selective hydroisomerization of long-chain n -alkanes.
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF CATALYSIS
·
2024
·
IF 15.7
Jiafa Chen,Peng Bai,Shibo Yuan,Yi He,Zifan Niu,Yicheng Zhao,Yongdan Li
Designing highly efficient photocatalyst for the valorization of CO 2 is an ideal strategy to reduce greenhouse gas emissions and utilize solar energy. In this study, a S-scheme heterojunction photocatalyst is fabricated by solvothermal impregnation of ZnO on W 18 O 49 for photocatalytic CO 2 N -formylation of aniline. The localized surface plasmon resonance effect of W 18 O 49 improves the absorption capacity for long-wave light significantly, and the hot electrons generated in W 18 O 49 with a high energy can migrate to the conduction band of ZnO and thus enhance the photocatalytic reduction ability. Meanwhile, the S-scheme heterojunction facilitates the separation of photoinduced charge carriers and preserves the redox ability of W 18 O 49 /ZnO composite photocatalyst. The conversion of aniline reaches 99.1% after 5 h reaction under visible light irradiation at room temperature with an N -formylaniline selectivity of 100%. A possible photocatalytic reaction mechanism is proposed. This study paves a promising way for the design of highly efficient photocatalyst and the sustainable utilization of CO 2 .
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）