JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
·
2020
·
IF 1.701
Xiao-Yan Xue,Hu-Fei Li,Yong Wang,Fu-Qiang An,Tuo-Ping Hu,Jian-Feng Gao
Two novel adsorbents (AGD301 and ArgD301) were successfully prepared through ring-opening reaction. The adsorption performance and recognition selectivity of AGD301 and ArgD301 towards AuCl4− were studied by batch adsorption experiments. The results showed that adsorption time, pH, temperature and solution concentration had a significant influence on the adsorption performance. At 298 K and pH of 2, the equilibrium adsorption capacity of AGD301 and ArgD301 towards AuCl4− could reach 400.75 and 451.67 mg·g−1, respectively. In addition, AGD301 and ArgD301 possessed excellent selectivity and good reusability.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2020
·
IF 2.627
Dongmei Jia,Huamin Cai,Yongzheng Duan,Jiangbao Xia,Jia Guo
Chromium is a common harmful pollutant with high toxicity and low bearing capacity of soil and water. Excellent salinity resistance, a wide pH range, and high regeneration capacity were essential for qualified adsorbents used in removing hexavalent chromium (Cr(VI)) from polluted water. Herein, iron oxalate modified weak basic resin (IO@D301) for the removal of Cr(VI) was prepared by the impregnation method. The IO@D301 was characterized by scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FTIR), X-Ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). Owing to abundant amine, carboxyl groups and iron ions existing on the surface, IO@D301 possesses high adsorption and salinity resistance capacity for Cr(VI). The maximum adsorption capacity of IO301 towards Cr(VI) reached 201.30 mg·g −1 at 293 K and a pH of 5. The adsorption equilibrium was well fitted by the Freundlich model, and the adsorption process was described by the pseudo-first-order kinetics model as spontaneous and exothermic. The mechanism may be identified as electrostatic attraction, coordination, and reduction, which was confirmed by FT-IR and X-ray photoelectron spectroscopy.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION SCIENCE AND TECHNOLOGY
·
2019
·
IF 1.354
Fu-Qiang An,Hu-Fei Li,Xu-Dong Guo,Xiao-Yan Xue,Yong Wang,Tuo-Ping Hu,Jian-Feng Gao
Amino acid functionalized D301 resins (Tyr-D301, Phe-D301, and Ala-D301) are successfully prepared to remove phenols. The influences of adsorption condition on adsorption ability and the practical application value are investigated. The functionalized D301 resins possess strong adsorption ability toward phenol by ways of hydrogen bond interaction. The adsorption capacity of Tyr-D301, Phe-D301, and Ala-D301 is 388.2, 368.4, and 321.5 mg· g−1 at 293 K and pH of 2, respectively. The adsorption process could be described satisfactorily by Lagergren-first-order model and Langmuir model. The rate constant is 0.057, 0.042, and 0.035 min−1, respectively. The functionalized D301 can be used to dispose wastewater containing phenols.
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
BULLETIN OF THE KOREAN CHEMICAL SOCIETY
·
2017
·Vol. 39
·期 1
·58-64
·
IF 0.602
Min Li,Xiao-yan Xue,Yong Wang,Fu-qiang An,Tuo-ping Hu,Jian-feng Gao
In this article, a new surface imprinted polymer D301- g -IIPDMC is successfully prepared using AuCl 4 − as a template. The adsorption and recognition performances of D301- g -IIPDMC for AuCl 4 − are studied by using a static method and competitive adsorption experiment. The experimental results show that D301- g -IIPDMC possesses very strong adsorption affinity and excellent recognition for AuCl 4 − . The adsorption capacity of D301- g -IIPDMC for AuCl 4 − is 831.08 mg/g, and the selectivity coefficient relative to CuCl 4 2− is 128. The adsorption behavior is an endothermic spontaneous process, and fit well with pseudo-second order kinetic model and Freundlich adsorption isotherm model. Besides, D301- g -IIPDMC is desorbed easily and exhibits excellent reusability.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Gang Wang,Zengxi Li,Liu Fan,Chunshan Li,Suojiang Zhang
S ec -amines catalyzed two-step Mannich reaction for preparation of methacrolein from propionaldehyde and formaldehyde was more attractive than the C 4 selective oxidation route. Herein, a novel continuous fixed-bed process was developed for direct preparation of methacrolein from above stocks with catalysis of sec -amine grafted D301 resin. The effect of resin, sec -amine structure and grafting percentage on catalytic performance of the modified resin were detailed investigated and demonstrated by using FT-IR, TG-DTA, titration and solid-state NMR characterization methods before the optimal conditions were obtained. The grafting percentage of amine with abundant sec -amino groups onto D301 resin could reach 93.7% at optimal condition. With this new strategy, the yield and selectivity of methacrolein could attain 40.2% and 99.3%. In addition, the Mannich reaction step with activation energy of 66.3 kJ/mol was determined as the rate-controlling step through mechanism-based kinetic calculation.
研究领域:
有机化学
·
催化化学
✓ 已验证
DOI
高影响因子
Desalination and Water Treatment
·
2024
·
IF 1
Xiao-Yan Xue,Hu-Fei Li,Yong Wang,Fu-Qiang An,Tuo-Ping Hu,Jian-Feng Gao
In this study, two novel adsorbents (TSCD301 and TCHD301) were successfully synthesized through ring-opening reaction between the amino of thiosemicarbazide or thiocarbohydrazide and the epoxy group of poly(glycidyl methacrylate). The adsorption performance and recognition selectivity of TCHD301 and TSCD301 toward AuCl 4 – were studied by batch adsorption experiments. The results showed that the equilibrium adsorption capacity of TSCD301 and TCHD301 toward AuCl 4 – could reach 410.76 and 566.59 mg·g –1 at 298 K and pH of 2, respectively. The adsorption process could be described using the pseudo-second-order model, and the adsorption behavior of AuCl 4 – on TSCD301 and TCHD301 was typical monolayer adsorption. In mixed solution, two adsorbents had excellent selectivity toward AuCl 4 – . In addition, the adsorption capacity of adsorbent did not change significantly in repeated adsorption-desorption experiment.
研究领域:
环境化学
·
材料科学
·
湿法冶金
·
吸附技术
✓ 已验证
DOI
高影响因子
Journal of Environmental Sciences
·
2016
·
IF 2.208
Yue Sun,Peng Zuo,Junfen Luo,Rajendra Prasad Singh
Two novel weakly basic anion exchange resins (SZ-1 and SZ-2) were prepared via the reaction of macroporous chloromethylated polystyrene-divinylbenzene (Cl-PS-DVB) beads with dicyclohexylamine and piperidine , respectively. The physicochemical structures of the resulting resins were characterized using Fourier Transform Infrared Spectroscopy and pore size distribution analysis. The adsorption behavior of SZ-1 and SZ-2 for benzenesulfonic acid (BA) was evaluated, and the common commercial weakly basic anion exchanger D301 was also employed for comparison purpose. Adsorption isotherms and influence of solution pH, temperature and coexisting competitive inorganic salts (Na 2 SO 4 and NaCl) on adsorption behavior were investigated and the optimum desorption agent was obtained. Adsorption isotherms of BA were found to be well represented by the Langmuir model. Thermodynamic parameters involving Δ H , Δ G and Δ S were also calculated and the results indicate that adsorption is an exothermic and spontaneous process. Enhanced selectivity of BA sorption over sulfate on the two novel resins was observed by comparison with the commercial anion exchanger D301. The fact that the tested resins loaded with BA can be efficiently regenerated by NaCl solution indicates the reversible sorption process. From a mechanistic viewpoint, this observation clearly suggests that electrostatic interaction is the predominant adsorption mechanism. Furthermore, results of column tests show that SZ-1 possesses a better adsorption property than D301, which reinforces the feasibility of SZ-1 for potential industrial application.
研究领域:
化学工程
·
环境科学
✓ 已验证
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Guqing Xiao
2,4-Dichlorophenol (2,4-DCP) is a persistent organic pollutant that has been found in various water bodies. D301 anion exchange resin was anchored for the nanoconfinement of Fe 3 O 4 crystal (D301-Fe 3 O 4 ) to design 2,4-DCP adsorbent. In-situ grown Fe₃O₄ in D301-Fe 3 O 4 exhibited uniform distribution, nano crystal and strong superparamagnetism. The excellent thermal and chemical stability of D301-Fe 3 O 4 enabled its large-scale practical applications over a broad pH range (3−13), high salinity and alkalinity. The adsorption capacities of 2,4-DCP on D301-Fe 3 O 4 were superior to those of H103, XAD-4, D301, D201-Fe 3 O 4 and D201. D301-Fe 3 O 4 exhibited greater adsorption rate than D301. In the presence of interfering electrolytes and heavy metal Cd 2+ , D301-Fe 3 O 4 showed prominent anti-interference ability than D301. The synergistic adsorption mechanism of 2,4-DCP on D301-Fe 3 O 4 involved hydrophobic interaction, hydrogen bonding, π-π interaction and coordinate bonding. Ten adsorption-desorption cycles demonstrated that D301-Fe 3 O 4 could be effectively refreshed with 80% C 2 H 5 OH-1.5% NaCl and stably reused. 10 mL (1BV) of D301-Fe 3 O 4 could continuously purify 1584.4 BV of agricultural ditch water containing 0.05 mg/mL 2,4-DCP without the leakage of 2,4-DCP. Only 14.9 BV of 80% C 2 H 5 OH-1.5% NaCl as regenerant, the recovery rate of 2,4-DCP reached 95.87%. D301-Fe 3 O 4 holds great potential for 2,4-DCP wastewater treatment.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）