SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Laigang Hu,Min Hu,Mengxue Zhang,Weiwei Wang,Ling Jiang,Wenhao Wu,Daohui Lin,Kun Yang
Sulfur dioxide (SO 2 ) adsorption, from the exhaust gas of the industrial processes and vehicles, remains an issue due to the corrosive nature of SO 2 . Herein, a novel amino-functionalized bio-derived metal–organic framework, named Bio-ZJU-928(Ni), comprises “paddle-wheel” shaped nickel secondary building unit, acetic acid ligand, and adenine with amino group. It exhibits excellent chemical-thermal stability, specific surface area (634 m 2 g −1 ), outstanding trace SO 2 adsorption (2.94 mmol g −1 ) at 0.002 bar and 273 K, and good cyclical SO 2 adsorption–desorption performance. Bio-ZJU-928(Ni) also has excellent SO 2 selectivity adsorption, identified by its higher ideal adsorption solution theory values for SO 2 /N 2 (32,145) and SO 2 /CO 2 (259.35) at 10/90 ( v/v ) and 273 K, respectively. Under relative humidity (50 %), the dynamic SO 2 adsorption of Bio-ZJU-928(Ni) is 32.47 cm 3 g −1 , which is higher than that of Bio-ZJU-928(Ni) under dry condition (23.08 cm 3 g −1 ) at the mixture gases (N 2 /CO 2 /O 2 /SO 2 = 81.8:15:3:0.2). The enhanced SO 2 adsorption of Bio-ZJU-928(Ni) can be ascribed to the O=S=O···H − O hydrogen bond formed with water, as verified by in situ diffuse reflectance infrared Fourier transform spectroscopy and Grand canonical Monte Carlo simulations
研究领域:
材料科学
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环境科学
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
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2026
·Vol. 61
·期 9
·6116-6136
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IF 3.9
Liu Xiaoli,Xu Mengjin,Guo Jiaxiu,Li Jianjun
The desulfurization performance for Mn-Ni supported on activated carbons (Mn-Ni/NAC) calcined at different temperatures varies considerably. The physicochemical properties of Mn-Ni/NAC have been investigated by a series of characterization studies. The moderate calcination temperature contributed to a larger surface area and abundant oxygen-containing functional groups (C = O), thus provided more anchoring sites for the dispersion of Mn 2+ and Ni 0 species. The optimal Mn-Ni/NAC-700 exhibited superior desulfurization performance, achieving breakthrough sulfur capacity and breakthrough time of 287 mg/g and 531 min, respectively. The nucleophilic C = O groups served as active sites for chemically absorbing SO 2 . Ni 0 could serve as an oxygen activator, and promote the transfer of oxygen molecules to oxidize SO 2 . During the desulfurization, SO 2 adsorbed on the C = O groups gradually mainly converted into sulfate (SO 4 2− ). This conversion process was closely linked to the decrease of surface C = O groups and the formation of C–O groups. As the reaction proceeds, reaction products (SO 4 2+ ) begin to accumulate, blocking the pore channels of the catalyst and generating MnSO 4 , resulting in catalyst deactivation. This work will guide the design of high-performance activated carbon-based adsorbents suitable for practical applications.
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高影响因子
ACS Applied Materials & Interfaces
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2020
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IF 8.758
Qingping Xin,Xu Li,Hailong Hou,Qingqing Liang,Jianping Guo,Shaofei Wang,Lei Zhang,Ligang Lin,Hui Ye,Yuzhong Zhang
An organic–inorganic polyvinylidene fluoride/polyvinylidene fluoride–silica (PVDF/PVDF-SiO2) mixed matrix membrane contactor is fabricated via a facile and efficient hydrophobic modification method. The solubility parameters of the PVDF particle are precisely regulated, the PVDF particles are blended with SiO2 nanoparticles to form PVDF-SiO2 suspension, and then the suspension is introduced onto the surface of the PVDF substrate by an in situ spin coating strategy. The PVDF particles are partly etched and incorporated to construct the adhesive PVDF-SiO2 core–shell layer on the PVDF substrate, which results in a more stable PVDF-SiO2 coating layer on the substrate. The surface structure is precisely regulated by changing the etching morphology of PVDF particles and amount of doped PVDF and SiO2 particles, forming an integrated porous PVDF-SiO2 layer and constructing hierarchical lotus-leaf-like interfaces. The resultant PVDF/PVDF-SiO2 membrane contactors display the relatively regular distribution of pore size with ∼420 nm and excellent hydrophobic property with a water contact angle of ∼158°, which noticeably lightens wetting phenomena of membrane contactors. The SO2 absorption fluxes can reach as high as 1.26 × 10–3 mol·m–2·s–1 using 0.625 M of ethanolamine (EA) as liquid absorbent. The high stability of the SO2 absorption flux test indicates the excellent interface compatibility between the PVDF-SiO2 coating layer and the PVDF substrate. The versatile organic–inorganic layer exhibits super hydrophobic property, which prevents wetting of membrane pores. In addition, the membrane mass transfer resistance (H/Km) and membrane phase transfer coefficient (Km) are explored.
研究领域:
环境工程
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膜科学
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气体分离
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材料科学
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化学工程
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DOI
高影响因子
ANALYTICA CHIMICA ACTA
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2018
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IF 5.123
Guangle Song,Aikun Liu,Hongli Jiang,Ruixue Ji,Jian Dong,Yanqing Ge
A mitochondria-targeted ratiometric fluorescent probe based on hemicyanine and pyrido[1,2-a]benzimidazole was presented. It shows high sensitivity and selectivity toward SO 2 in pure water. The limit of detection (LOD) was as low as 26.7 nM, which is superior to most reported probes. Most importantly, the probe was successfully used for fluorescence imaging of endogenous bisulfite in mitochondria in Glioma cells.
研究领域:
生物化学
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细胞生物学
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医学影像学
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DOI
高影响因子
AICHE JOURNAL
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2018
·Vol. 65
·期 1
·409-420
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IF 3.326
Minghui Qiu,Xiangli Kong,Kaiyun Fu,Shixian Han,Xingyin Gao,Xianfu Chen,Yiqun Fan
Membrane gas absorption (MGA) is of great interest for SO 2 capture from ship exhaust, as it has high separation efficiency and, more importantly, is comprised of a separator that can be flexibly installed and operated on ships. Here, we report a class of hydrophobic tubular asymmetric ceramic membranes for SO 2 absorption. To find the membranes with reasonable microstructure and geometry, we used a numerical 2D model to simulate SO 2 absorption process and verified the model by comparing its results with experimental data. Simulations showed that most of the SO 2 mass transfer resistance existed in membrane phase, indicating that the optimization of membrane parameters, rather than operational conditions, should be the primary consideration to enhance the overall SO 2 mass transfer performance. Furthermore, simulations indicated that the SO 2 separation performance depended negligibly on membrane pore sizes, but can be significantly improved by optimizing the thickness and inner diameter of membrane tubes. © 2018 American Institute of Chemical Engineers AIChE J , 65: 409–420, 2019
研究领域:
化学工程
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环境工程
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膜科学
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气体分离
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DOI
高影响因子
Journal of Cleaner Production
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2024
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IF 9.7
Shuaiyong Dou,Kang Liu,Yanru Feng,Xuan Wang,Bowen Zhang,Cunchao Yang,Mengru Sun,Jing Han,Erhong Duan
The modern fossil fuel utilisation industry has proposed higher requirements for SO 2 removal to meet cleaner production requirements, such as the reusability of desulfurisers, avoidance of equipment corrosion, and recovery of sulfur resources. This study constructed a novel type III porous liquids (PLs) which combine the fluidity of liquids and the permanent porosity of solid materials by uniformly dispersing porous metal-organic framework particles of NENU-3a into a steric solvent of polydimethylsiloxane , and used them for SO 2 capture and recovery. A novel desulfurisation system was developed using tert-butanol peroxide as the oxidant and water as the extractant. The endowed porosity of the PLs significantly improved the SO 2 capture performance, and the polydimethylsiloxane solvent acted as a protective screen to prevent the corrosion of SO 2 to the equipment. The prepared PLs exhibited excellent reusability owing to their structural stability. Furthermore, the captured SO 2 was fully oxidised to SO 4 2− due to the excellent catalytic oxidation activity of encapsulated polyoxometalates in NENU-3a, thus obtaining a high-purity sulfuric acid product. This work not only proposes a novel technology to realise the resource ability of SO 2 under environmentally friendly conditions but also opens a new window for the rational treatment of emitted SO 2 gas based on PLs to meet the new requirements for fossil fuel utilisation.
研究领域:
环境科学
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化学工程
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材料科学
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DOI
高影响因子
APPLIED CATALYSIS A-GENERAL
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2019
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IF 4.63
Zhiwei Wang,Sha Li,Shaohua Xie,Yuxi Liu,Hongxing Dai,Guangsheng Guo,Jiguang Deng
Volatile organic compounds (VOCs) cause damage to atmospheric environment and human health. Supported noble metal catalysts are widely used to control VOCs emissions. The high cost, and low H 2 O-, CO 2 -, and SO 2 -resistance of such catalysts are worthy to be improved. Herein we fabricated Ce-, V-, or W-doped TiO 2 supported ultralow loading Pt catalysts via the in-situ molten salt method, and evaluated their catalytic performance for acetone (major pollutants in pharmaceutical industry) removal. Under the present reaction conditions, all the catalysts exhibited high catalytic activity and stability for acetone oxidation , with the temperature required 90% acetone conversion being of 245 °C over 0.57 wt% CeO 2 -0.05 wt% Pt/TiO 2 . The doping of Ce, V, or W enhanced the H 2 O-, CO 2 -, and SO 2 -tolerance ability of 0.05 wt% Pt/TiO 2 . More than 85 %85%, 70%, or 60% of acetone could be removed even in the presence of 20 vol% water vapor, 10 vol% CO 2 , or 100 ppm SO 2 , respectively. The improvement in SO 2 -tolerance ability was due to the inhibition of SO 2 adsorption and oxidation activity as well as Ti(SO 4 ) 2 or TiOSO 4 formation. Acetone complete oxidation over 0.57 wt% CeO 2 -0.05 wt% Pt/TiO 2 would follow the pathway: adsorbed acetone molecules → acetic acid and formic acid → carbonate species → CO 2 and H 2 O. The present supported Pt catalysts might be suitable for oxygenated VOCs removal.
研究领域:
环境科学
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催化化学
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DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2020
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IF 7.183
Qingping Xin,Ke An,Yu Zhang,Mingya Yun,Shaofei Wang,Ligang Lin,Hui Ye,Xiaoli Ding,Hong Li,Yuzhong Zhang
Membrane contactor has been considered to be a prospective alternative to traditional technology for toxic acid gases capture. In this study, the mixed matix membrane contactors (MMMCs) with the metal organic frameworks (MOFs, MIL-101(Cr)) as fillers are fabricated for high-efficiency SO 2 removal. The MIL-101(Cr) with microporous structure provides more SO 2 channels for the enhancement of SO 2 absorption flux. Moreover, the open metal sites from MIL-101(Cr) display the high affinity to SO 2 , which construct “SO 2 -philic” channels in the finger-like pore structure , resulting in the increment of SO 2 removal efficiency. The introduction of MIL-101(Cr) into PVDF modifies the physical structure verified by scanning electron microscope (SEM), liquid entry pressure (LEPw) and gas permeation test et al. The newly developed MIL-101(Cr) doped MMMCs exhibit competitive hydrophobicity with the water contact angle of 119°. In particular, the M 9 15 MMMC with MIL-101(Cr) loading 15 wt% displays the optimum SO 2 absorption performance with the SO 2 absorption flux and SO 2 removal efficiency of 1.09 × 10 −3 mol m −2 s −1 and 89.51%, respectively. The SO 2 mass transfer coefficient in membrane ( K m ) is significantly enhanced to 4.44 × 10 −3 m s −1 and membrane phase resistance ( H / K m ) is noticeably decreased to 92.96 s m −1 . Besides, the MIL-101(Cr) doped MMMCs show both the alkali resistance and long-term stability.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
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2020
·Vol. 44
·期 48
·21228-21237
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IF 3.288
Bo Hao,Wenbo Zhao,Dong Feng,Shengchao Xu,Yuan Chen
The enforcement of environmental law worldwide has attracted considerable attention in recent years towards capturing sulfur dioxide (SO2). The phase change absorption has turned out to be an effective way due to its industrially scalable characteristics. Herein, an aminosilane absorbent, namely dibutyl-trimethylsilanylmethyl-amine (DTSMA), was facilely synthesized by a substitution reaction of chloromethyltrimethylsilane and di-n-butylamine. The phase-change absorption performance of SO2 was systematically studied by using dimethyl silicone oil (DSO) as the solvent. The viscosity of pure DTSMA was only 1.29 mPa s, which is much lower than those of absorbents such as ionic liquids and deep eutectic solvents reported elsewhere, and the absorption product is found to be a charge transfer complex DTSMA SO2. The absorption capacity of DTSMA can reach 1.90 and 0.57 mol SO2 per mol DTSMA under 1 and 0.02 atm at 30 °C, respectively. In particular, the DTSMA/DSO solution can be not only almost regenerated within just 60 minutes at 100 °C, but also exhibited selective absorption towards SO2. All the results indicated that the synthesized DTSMA absorbent has enormous potential for application in capturing SO2 with benign circular desorption performance.
研究领域:
化学工程
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环境科学
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DOI
高影响因子
ENERGY & FUELS
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2018
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IF 3.024
Yang Chen,Bin Jiang,Haozhen Dou,Luhong Zhang,Xiaowei Tantai,Yongli Sun,Haiming Zhang
Deep eutectic solvents (DESs) have been seen as promising absorbents for SO2 capture in recent years. In this work, a series of DESs based on imidazole derivatives were synthesized to investigate the low pressure SO2 absorption. The physical properties were determined, and the DESs exhibited low viscosities and high stability. Effects of composition, operating temperature and pressure, and water content on SO2 absorption capacity were investigated. It was demonstrated that the 1-butyl-3-methylimidazolium chloride (BmimCl):4-methylimidazole (4CH3-Im) (1:2) could absorb 1.42 and 0.189 gSO2/gDES at 101.3 and 1 kPa SO2 partial pressure, respectively, which were higher than most reports to date under this condition. The absorbed SO2 could be released easily under mild condition, and there was no change in absorption performance after 5 cycles. Furthermore, the absorption mechanism studied by FTIR and NMR indicated that the high SO2 absorption capacity originated from the synergistic interaction of BmimCl and 4CH3-Im on SO2. This work opens opportunity for low partial pressure SO2 capture and insight into the formation mechanism of DESs for further investigation.
研究领域:
化学工程
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环境科学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2013
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IF 3.473
Kuan Huang,Yong-Le Chen,Xiao-Min Zhang,Shuang Xia,You-Ting Wu,Xing-Bang Hu
Two new simple acid salt ionic liquids (ASILs), tetraethylammonium diglutarate ([N 2222 ][diglutarate]) and dimethylethanolammonium diglutarate ([DMEA][diglutarate]) were synthesized and the ASILs/sulfolane binary mixtures containing 40 wt% ASILs were prepared for SO 2 absorption in this work. The SO 2 absorption rate is found to be quite fast with an equilibrium time within 2 min, due to the low viscosity of the mixtures. The solubilities of SO 2 in the two binary mixtures were measured under the pressure range of 0–1 bar and the temperature range of 303.15–333.15 K and results demonstrate the binary mixtures could trap as much as 6.836–7.624 mol SO 2 /kg absorbents at 1 bar and 303.15 K. The solubilities are 0.826–0.954 mol SO 2 /kg absorbents at a pressure as low as 0.004 bar, which is important for capturing SO 2 from the flue gas with low content of SO 2 . Thermodynamic analysis based on a Reaction Equilibrium Thermodynamic Model (RETM) was used to calculate the Henry’s law constants, reaction equilibrium constants, chemical absorption capacity, physical absorption capacity and thermodynamic functions of SO 2 absorption in the mixtures. The calculated absorption enthalpy are −53.73 and −47.15 kJ/mol for the two binary mixtures, respectively. The ASILs/sulfolane binary mixtures are shown to be an attractive alternative to pure ILs to be applied in SO 2 absorption due to the large absorption capacity and low absorption enthalpy, as well as the fast absorption rate.
研究领域:
环境科学
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化学工程
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产品关联
DOI
高影响因子
CATALYSIS LETTERS
·
2022
·Vol. 153
·期 1
·248-259
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IF 2.936
Liu Yi,Chen Ying,Zhi Yunfei,Yu Xiaojian,Wang Pengfei,Wang Shouhong,Shan Shaoyun
In this work, by loading a chromium Salen complex on amino-functionalized cellulose (AFC-SalenCr), a novel and efficient heterogeneous catalyst was successfully synthesized, and used for the copolymerization of sulfur dioxide (SO 2 ) with cyclohexene oxide for the first time. The catalysts were characterized by FTIR, XPS, ICP-MS and TGA for their physiochemical and thermal properties. The as-prepared AFC-SalenCr showed high catalytic activity for the copolymerization. Under optimal reaction conditions, the molecular weight of the resultant copolymer could reach 40,100 g/mol. Moreover, the catalyst was able to recover facilely and be reused for four cycles without any significant activity loss. In addition, the thermal degradation kinetics of the synthesized copolymer was further studied using Kissinger and Flynn–Wall–Ozawa methods for the first time, which indicated that the activation energy of the thermal degradation was 92.8 kJ/mol and 94.0 kJ/mol, respectively. Graphical Abstract
研究领域:
材料科学
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催化化学
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高分子化学
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DOI
高影响因子
危险品化学品经营许可证（带存储）