ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Hong Li,Yuanyuan Feng,Jingde Li,Yanqin Yang
Efficient CO2 capture, demonstrating significant potential in reducing excessive carbon emissions and advancing carbon neutrality, is crucial for advancing carbon capture, utilization, and storage (CCUS) technology. Membrane technology is environmentally friendly and energy-saving for CO2 capture. Mixed matrix membranes (MMMs) consisting of polymers of intrinsic microporosity (PIMs)-grafted composite fillers and PIM matrices are promising for gas separation. However, conventional two-phase MMMs often face a fundamental challenge: the trade-off between permeability and selectivity, coupled with nonselective interfacial defects arising from poor compatibility between the polymer matrix and fillers. Moreover, the synthesis of composite fillers is usually complex and highly dependent on the reasonable matching of fillers and grafted polymers, restraining the wide application of this material system. To fundamentally address this issue of interfacial compatibility, we focused on designing a distinct third phase at the interface. Herein, we report a concept of polymer–filler–polymer ternary-phase MMMs (TMMMs) for efficient CO2 separation. The key point is that the membrane system consists of a PIM matrix, filler, and a functionalized PIM-type third component. As the functionalized PIMs selected can form strong interactions with both fillers and PIM matrices, they can work as a molecular bridge between two phases, diminishing the generation of nonselective interfacial defects. Meanwhile, the functionalized PIMs’ incorporation can increase the quantity of CO2 adsorption sites as well as facilitate the formation of a porous network structure between filler and matrix phases, making the performance improvement of the resultant membranes foreseeable. Particularly, the representative ternary membrane made from 3D-COF (filler, 5 wt %), PIM-1 (matrix), and carboxylated PIM-1 (cPIM-1, third component, 1 wt %) exhibits significantly improved CO2 permeability of 9560 Barrer, CO2/N2 selectivity of 22.7, and antiaging performance in comparison to the pure PIM-1 membrane and PIM-1/3D-COF binary membrane. We believe that this concept proposed here offers an alternative way to produce defect-free and high-performing PIM-based MMMs for CO2 capture and other separations.
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高影响因子
MOLECULES
·
2019
·Vol. 24
·期 2
·361
·
IF 3.06
Haili Wang,Wenfeng Han,Xiliang Li,Bing Liu,Haodong Tang,Ying Li
Cr2O3nanoparticles were prepared by solution combustion synthesis (SCS) with chromium nitrate as the precursor and glycine as the fuel. Commercial Cr2O3and Cr2O3prepared by a precipitation method were also included for comparison. The morphology, structure, acidity and particle size of fresh and spent Cr2O3catalysts were investigated by techniques such as XRD, SEM, TEM, BET and NH3-TPD. In addition, catalytic performance was evaluated for the dehydrofluorination of 1,1,1,3,3-pentafluoropropane (CF3CH2CHF2, HFC-245fa) to 1,3,3,3-tetra-fluoropropene (CF3CH=CHF, HFO-1234ze). The catalytic reaction rate of Cr2O3prepared by SCS method is as high as 6 mmol/h/g, which is about 1.5 times and 2 times higher than that of precipitated Cr2O3and commercial Cr2O3, respectively. The selectivity to HFO-1234ze for all the catalysts maintains at about 80%. Compared with commercial and precipitated Cr2O3, Cr2O3-SCS prepared by SCS possesses higher specific surface area and acid amount. Furthermore, significant change in the crystal size of Cr2O3prepared by SCS after reaction was not detected, indicating high resistance to sintering.
研究领域:
材料化学
·
催化化学
·
纳米材料科学
·
环境友好化工
·
氟化学
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高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2026
·
IF 2.4
Zhao Pengyu,Zhang Jijun,Liu Xiuwu,Wang Qi,Chen Xueqing,Liu Xinbo
Because reliable low-pressure vapor–liquid equilibrium
(VLE)
data for 3-buten-1-ol -containing systems are scarce and 3-buten-1-ol
exhibits strong heat sensitivity. Isobaric VLE data for the 3-buten-1-ol
+ n-butanol and 3-buten-1-ol + water systems were measured at pressures
ranging from 5 kPa to atmospheric pressure. The experimental data
were correlated using the NRTL activity coefficient model, which showed
satisfactory agreement with the measured results, with average root-mean-square
deviations below 0.15 K in temperature and 0.005 in vapor-phase composition.
The 3-buten-1-ol + n-butanol system does not form an azeotrope, and
its average relative volatility increases by 26% as the pressure decreases
from 101.5 to 5 kPa, indicating the potential benefit of vacuum distillation
for the separation of 3-buten-1-ol from n-butanol. The 3-buten-1-ol
+ water system forms an azeotrope, and the 3-buten-1-ol mole fraction
at the azeotropic composition decreases by 20% as the pressure decreases
from 99.5 to 5 kPa, suggesting that reduced-pressure operation may
facilitate 3-buten-1-ol dehydration. Residue curve maps of the 3-buten-1-ol
+ n-butanol + water system reveal two distillation regions. These
data provide thermodynamic information for 3-buten-1-ol separation
and purification.
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高影响因子
ACTA PHARMACOLOGICA SINICA
·
2024
·
IF 6.9
Xia Rui-xue,Zou Pei-chen,Xie Jun-ting,Tang Ya-bin,Gong Miao-miao,Fan Fu,Aihemaiti Ayinazhaer,Liu Yu-qing,Shen Ying,Zhou Bin-bing S.,Zhu Liang,Lei Hui-min
RAS is the most frequently mutated oncoprotein for cancer driving. Understanding of RAS biology and discovery of druggable lynchpins in RAS pathway is a prerequisite for targeted therapy of RAS-mutant cancers. The recent identification of KRAS G12C inhibitor breaks the “undruggable” curse on RAS and has changed the therapy paradigm of KRAS-mutant cancers. However, KRAS mutations, let alone KRAS G12C mutation, account for only part of RAS-mutated cancers. Targeted therapies for cancers harboring other RAS mutations remain the urgent need. In this study we explored the pivotal regulatory molecules that allow for broad inhibition of RAS mutants. By comparing the expression levels of nucleotide pyrophosphatase (NPPS) in a panel of cell lines and the functional consequence of increased NPPS expression in RAS-mutant cells, we demonstrated that cancer cells with various kinds of RAS mutations depended on NPPS for growth and survival, and that this dependence conferred a vulnerability of RAS-mutant cancer to treatment of NPPS inhibition. RAS-mutant cells, compared with RAS-wildtype cells, bored and required an upregulation of NPPS. Transcriptomics and metabolomics analyses revealed a NPPS-dependent hyperglycolysis in RAS-mutant cells. We demonstrated that NPPS promoted glucose-derived glycolytic intermediates in RAS-mutant cells by enhancing its interaction with hexokinase 1 (HK1), the enzyme catalyzing the first committed step of glycolysis. Pharmacological inhibition of NPPS-HK1 axis using NPPS inhibitor Enpp-1-IN-1 or HK1 inhibitor 2-deoxyglucose (2-DG), or genetic interfere with NPPS suppressed RAS-mutant cancers in vitro and in vivo. In conclusion, this study reveals an unrecognized mechanism and druggable lynchpin for modulation of pan-mutant-RAS pathway, proposing a new potential therapeutic approach for treating RAS-mutant cancers.
研究领域:
肿瘤学
·
分子生物学
·
癌症治疗
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高影响因子
JOURNAL OF ORGANIC CHEMISTRY
·
2022
·
IF 4.198
Shihai Lv,Ya-Nan Tian,Yanyan Yang,Chaoying Wen,Shiqing Li
An efficient one-pot synthesis of 1,1′-biisoquinolines by a three-component reaction of commercially available raw materials (benzils, NH4OAc, and alkynes) is disclosed. This complicated reaction involves in situ diimine formation via benzil-NH4OAc condensation, Rh(III)-catalyzed 2-fold imine-directed C–H activation, and annulation with alkynes. Both symmetric and unsymmetric 1,1′-biisoquinolines could be assembled in moderate to high yields. The reaction mechanism is supported through ESI-MS, in which Cp*ClRh+, Cp*(OAc)Rh+, Cp*(OPiv)Rh+, and two rhodacycle intermediates are successfully detected to explain the evolution of rhodium species.
研究领域:
有机化学
·
合成化学
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高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2014
·
IF 2.045
Mingjie Wang,Tianxiang Yin,Chen Xu,Zhiyun Chen,Weiguo Shen
The measurements of the liquid–liquid coexistence curve and the heat capacity for binary mixture {1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([C2mim][NTf2]) + 1-propanol} have been precisely performed. The values of the critical exponents α and β in the critical region were obtained and coincided well with the 3D-Ising ones. The complete scaling theory was applied to well represent the asymmetric behavior of the diameter of the coexistence curve, indicating an important role of the heat capacity related term in the complete scaling formulizm. A comparison of the reduced critical parameters to those predicted by the restricted primitive model clearly showed the solvophobic criticality of the studied system.
研究领域:
物理化学
·
热力学
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高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2016
·Vol. 163
·期 13
·D682
·
IF 3.014
Shuojian Su,Yanna NuLi,Nan Wang,Dilinuer Yusipu,Jun Yang,JiuLin Wang
The electrolytes containing halide-free inorganic magnesium salt Mg(BH4)2 dissolved in ether solvents have shown reversible Mg deposition-dissolution performance. Herein, we improved the anodic stability of the electrolytes on non-inert stainless-steel electrode by mixing PP14TFSI ionic liquid with tetraglyme (TG) and dimethoxyethane (DME) ether solvents. The effect of mixing ratios and salt concentrations on the electrochemical behavior of the electrolyte were investigated. High anodic stability, good ionic conductivity, excellent cycling efficiency, feasibility of the preparation and good compatibility toward Mo6S8 and TiO2 insertion cathode make the electrolytes promising for the potential application in rechargeable magnesium batteries.
研究领域:
材料科学
·
电化学
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DOI
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2026
·
IF 3.5
Jiaojiao Yu,Yi Zuo,Gudan Li,Bosong Zhang,Hong Yang,Xinyue Wang,Xinwen Guo
PO 4 3- assists the one-step synthesis of highly active TS-1 containing Ti-VI species. • PO 4 3- induces plate-like TS-1 morphology and creates hierarchical micropores. • Ti-VI is constructed by Ti-O-PO 4 x- intermediate from bonding of Ti-OH with PO 4 3- . • TS-MAP-0.2 doubles the activity for 1-hexene epoxidation than additive-free TS-1. Titanium silicalite-1 (TS-1) is an efficient and green oxidation catalyst that has been employed in various industrial processes. In our previous work, a highly active TS-1 catalyst bearing Ti(OSi) 2 (OH) 4 (Ti-VI) was successfully prepared via post-treatment with alkaline solutions. Herein, a novel synthesis strategy is developed using monoammonium phosphate (MAP) as a regulator to fabricate thin TS-1 crystals with Ti-VI species, eliminating the complicated post-treatment operations. The study reveals that although the added phosphate anion (PO 4 3- ) is not incorporated into the MFI framework, it significantly affects the crystallization behavior of TS-1 during the synthesis. Essentially, PO 4 3- exerts two functions. First, it regulates the Ti species in the resulting TS-1 by forming Ti-O-PO 4 x - intermediates which not only promotes the formation of Ti-VI but also the construction of large micropores (0.7−0.8 nm) around Ti atoms in TS-1. Furthermore, PO 4 3- induces the formation of plate-like crystal morphology of TS-1. The obtained TS-1 catalyst exhibits remarkably enhanced catalytic performance in 1-hexene epoxidation, which is ascribed to the concurrent o ptimization of its intrinsic catalytic activity and mass transfer diffusion properties. Download: Download high-res image (354KB) Download: Download full-size image
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高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2022
·
IF 4.326
Qiangbing Shi,Kaixuan Wang,Mengjun Wang,Tao Li,Baozeng Ren,Yinge Bai,Xiangping Zhang
Four sulfate-based ILs, 1-butyl-3-ethylimidazolium ethyl sulfate [Beim][EtSO4], 1-ethyl-3-ethylimidazolium ethyl sulfate [Eeim][EtSO4], 1-ethyl-3-methylimidazolium ethyl sulfate [Emim][EtSO4], and 1-ethylpyridinium ethyl sulfate [Epy][EtSO4], were synthesized and used as an absorbent for dichloromethane (DCM). Among them, the maximum DCM absorption capacity of 0.426 g DCM g–1 IL was achieved in [Beim][EtSO4] at 313.15 K and 37.7% DCM concentration, which was 42.2% higher than that of common organic solvent bis(2-ethylhexyl) adipate under the same conditions. The density and viscosity of [Beim][EtSO4] containing different mass fractions of DCM were measured. The density of [Beim][EtSO4] increases with the mass fraction of adsorbed DCM, while the viscosity decreases sharply. The efficient performance of ILs to absorb DCM is mainly due to the hydrogen bonding interaction between the anion and DCM, which was confirmed by spectroscopic measurement and quantum chemical calculations. This work demonstrates the great potential of ILs in separating and recovering DCM from exhaust gas.
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高影响因子
INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY
·
2021
·Vol. 57
·期 1
·516-524
·
IF 3.713
Wangshu Zhang,Luyang Jing,Huiyun Chen,Sheng Zhang
Summary The effect of carnauba wax-based nanoemulsion coating-1 (NC-1) combined with 1-methylcyclopropene (1-MCP) treatment on the storage of honey peach fruit ‘Yulupantao’ for 28 days under 0 ± 0.5 °C, and 90% RH conditions was studied. The results showed that NC-1 or 1-MCP treatment alone and in combination were proved to be more effective in maintaining fruit qualities compared to the control group with no treatment. However, the application with the combination of NC-1 and 1-MCP treatment had the most significant effect on reducing mass loss and decay rate, maintaining firmness, total soluble solids (TSS), ascorbic acid (AsA) and titratable acid (TA) contents, suppressing malondialdehyde (MDA) accumulation and conductivity ascend. Moreover, the activities of peroxidase (POD) were maintained, and polyphenol oxidase (PPO) and phenylalanine ammonialyase (PAL) were effectively suppressed in NC-1, 1-MCP and combined treatment than that of control. Therefore, the combination of NC-1 and 1-MCP treatment could be an efficient way to maintain the qualities of peach fruit during low-temperature storage after harvest.
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高影响因子
Frontiers in Chemistry
·
2020
·
IF 3.693
Li Liqing,Yang Lin,Li Fangxu
A novel collector of 1-(2-hydroxyphenyl) dec-2-en-1-one oxime (HPDO) was synthesized from 2-hydroxy acetophenone and octanal, and its flotation and adsorption behavior for malachite were studied by flotation tests and x-ray photoelectron spectroscopy (XPS) analysis. The flotation results of a single mineral show HPDO is a special collector for malachite. Compared with benzohydroxamic acid (BHA), isobutyl xanthate (SIBX), and dodecylamine (DA), HPDO exhibits excellent flotation performance for malachite and satisfied selectivity against quartz and calcite over a wide pH range. The HPDO with a concentration of 200 mg/L can float 94% malachite at pH 8, while only recovering 7.8% quartz and 28% calcite. XPS data give clear evidence for the formation of a Cu-oxime complex on malachite surfaces after HPDO adsorption.
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DOI
PubMed
高影响因子
EUROPEAN JOURNAL OF PHARMACEUTICAL SCIENCES
·
2023
·
IF 4.6
Xinghui Hao,Yuqing Zhang,Yanling Sun,Mengge Liu,Qiru Wang,Xinghua Zhao,Xin He
Two new salt forms of sulfadiazine (SDZ) and piperazine (PIP) were synthesized and characterized. Out of the two polymorphs (SDZ-PIP Ⅰ and SDZ-PIP II), SDZ-PIP Ⅱ is the more stable form at low temperature, room temperature and high temperature. The solution-mediated phase transformation result shows that SDZ-PIP II can transform into pure SDZ within 15 s in phosphate buffer at 37 °C, which leads to a loss in solubility advantage. The addition of 2 mg/mL PVP K30, a polymeric crystallization inhibitor, maintains the solubility advantage and permits supersaturation for a longer period of time. SDZ-PIP II showed 2.5 times the solubility of SDZ alone. The area under the curve (AUC) of SDZ-PIP II with 2 mg/mL PVP K30 was approximately 165% of that of SDZ alone. Moreover, SDZ-PIP II with PVP K30 was more effective than SDZ alone in treating meningitis. Therefore, the SDZ-PIP II salt improves the solubility, bioavailability, and anti-meningitis activity of SDZ.
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DOI
PubMed
高影响因子
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