POLYMER BULLETIN
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2021
·Vol. 79
·期 2
·1057-1068
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IF 2.87
Zhang Yue-Fei,Tang Jian,Li Tao,Liu Yun,Li Yan
In this paper, the polymerization of acrolein (A) via UV-mediated atom transfer radical polymerization (ATRP) is reported. The optimization of the experimental conditions of the polymerization is investigated, and it shows that dimethyl sulfoxide as solvent, ethyl 2-bromoisobutyrate (EBIB) and fluorescein (FL) as catalyst, and [A] 0 /[EBIB] 0 /[FL] 0 = 200/1/0.1 in the period of 5 h at 47 °C are suitable conditions for the reaction. In this way, the yield of the polymer is 24.5%. The glass transition temperature and melting point of polyacrolein characterized by differential scanning calorimetry are 115.5 °C and 165.7 °C, respectively. At low conversion, the polymerization conforms to be the first-order kinetics reaction. The dependence of polymerization on light source is proved by “on/off” light source experiment. In short, this study opens up a new way for the ATRP of acrolein, and the polyacrolein with abundant aldehyde groups can be used in the fields of biomedical labeling, immobilization carrier and adsorption of organic amines. Graphic abstract
研究领域:
高分子化学
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材料科学
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DOI
高影响因子
Catalysts
·
2019
·Vol. 10
·期 1
·43
·
IF 3.444
Xincheng Wang,Fenghe Zhao,Long Huang
Temperature programmed surface reaction (TPSR) was developed as a method for rapid screening of catalysts. In this study, a series of acid catalysts was screened for the low-temperature dehydration of glycerol to acrolein via TPSR. Results suggested that most catalysts show activity of glycerol conversion to acrolein at a greatly different temperature range. HY, SiO2supported H4SiW12O40(STA/SiO2), SO42−/ZrO2, and SO42−/TiO2were observed to be efficient for the conversion of glycerol into acrolein at 210 °C, which was significantly lower than that generally reported (250–340 °C). Moreover, high selectivity of acrolein was gained at 85% and 86% over SiW/SiO2and SO42−/TiO2, respectively. A new style catalyst, ZnCl2/SiO2, was also found to be highly selective to acrolein and evaluated in a conventional fixed-bed reactor. Especially, stability tests showed that the catalyst life was up to 300 h with no clear deactivation on ZnCl2/SiO2with hydrogen as dilution.Keywords:glycerol;low temperature dehydration;acrolein;TPSR
研究领域:
化学工程
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催化科学
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产品关联
DOI
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
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2020
·
IF 4.192
Xiaoyun Jiang,Dingmin Zhang,Yongling Lu,Lishuang Lv
Increasing evidence has identified the unsaturated aldehyde acrolein (ACR) as the potential factor that causes deoxyribonucleic acid cross-linking and the development of chronic diseases. The objective of this study was to investigate the mechanism by which theophylline (TP) scavenges ACR for the first time. TP efficiently scavenged ACR through forming adducts, which was demonstrated in a system in which TP was incubated with ACR at different ratios for different times for liquid chromatography with tandem mass spectrometry. Then, the mono- and di-ACR-TP adducts were purified, and their structures were elucidated by high-resolution mass spectrometry and nuclear magnetic resonance analysis. We found that the ACR residue on mono-ACR-TP further trapped one more ACR and formed di-ACR-TP adducts. Furthermore, mono- and di-ACR-TP had similar time-dependent ACR-scavenging activity to TP. Finally, we demonstrated that green tea, coffee, and cocoa inhibited ACR by trapping ACR to form mono- and di-ACR-TP adducts during the incubation of green tea, coffee, and cocoa with ACR.
研究领域:
食品科学
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毒理学
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生物化学
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DOI
PubMed
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
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2020
·
IF 4.192
Xiaoyun Jiang,Huifang Lv,Yang Lu,Yongling Lu,Lishuang Lv
Acrolein (ACR) is a toxic unsaturated aldehyde that is formed during different steps of thermal food processing. Here, we explored the kinetics of curcumin and ACR and elucidated the pathway of curcumin trapping ACR by preparing a mono-adduct of ACR (CMA-1) conjugated with curcumin. The synergistic scavenging effect and mechanism of curcumin combined with quercetin on ACR was analyzed by liquid chromatography–tandem mass spectrometry (LC–MS/MS). Comparing the uses of curcumin and quercetin both individually and in combination, we found that quercetin in combination resulted in more curcumin being transformed into CMA-2, while curcumin in combination made the amount of di-ACR conjugated to quercetin (QDA) increase. We also added combined curcumin and quercetin into grilled chicken wings to demonstrate that curcumin and quercetin could scavenge ACR by forming their own ACR adducts and antioxidant activity during the process. Our results have noted a new strategy, in which some combinations of dietary polyphenols might contribute to the removal of toxic ACR produced during thermal food processing.
研究领域:
食品科学
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生物化学
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毒理学
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产品关联
DOI
PubMed
高影响因子
Scientific Reports
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2017
·Vol. 7
·期 1
·1-8
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IF 4.259
Su Yanbin,Ma Xiaowei,Su Yanwen,Mu Tongxing,Li Yanhe,Jiang Ning,Su Yuyun,Zhang Qi
Inappropriate use of ethanol (EtOH) had led to noticeable health problems, but a beneficial phenomenon was found that EtOH displayed unique influences for toxic trans-crotonaldehyde (TCA) derived from mitochondrial lipid peroxidation. The influences of EtOH on the structure of TCA were systematically probed by UV-vis & Raman spectroscopy in the absence and presence of mitochondria, respectively. The maximum UV-vis peak at 301 nm of TCA was red shifted by hydroxyl (-OH) and methyl (-CH 3 ) of EtOH, respectively. Raman stretching band of aldehyde (-CH=O) of TCA (TCA-CH=O) was split by the -CH 3 of EtOH. The -CH 3 increased TCA-CH=O stretching frequency while the -OH induced it. The more exposed -OH, the less stretching frequency. The ectopic -CH 3 red shifted the UV-vis peak at 301 nm and Raman band of TCA-CH=O. In mitochondria, EtOH red shifted Raman stretching band of TCA-CH=O. Raman stretching bands of C-H, C-O and C-C of EtOH were red shifted, while Raman stretching bands of -CH 2 and C-C-O of EtOH disappeared. The paper unearths the influences of EtOH to trap and transform the structure of TCA-CH=O. This discovery has an important contribution to eliminate TCA in order to protect and repair mtDNA by means of the decrease of 8-oxoG.
研究领域:
生物化学
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毒理学
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医学
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产品关联
DOI
PubMed
高影响因子
GREEN CHEMISTRY
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2020
·Vol. 22
·期 13
·4222-4230
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IF 9.48
Jiayuan Yu,Anker Degn Jensen,Lei Wang,Chunshan Li,Suojiang Zhang
Methacrolein (MAL) is an important chemical for the manufacture of methyl methacrylate and a key monomer in many polymerization reactions. In this study, L-proline was investigated as the catalyst for the aldol condensation of formaldehyde and propionaldehyde to produce MAL. The catalytic activity of the reaction system was closely related to the competition between the main reaction synthesizing MAL and the side reaction producing 2-methyl-2-pentenal, which could be modified by adjusting the operating parameters. The influences of several operating conditions, including temperature, reaction time and water content, on the catalytic performance of the system were systematically studied via a series of single-factor experiments, and the optimized reaction conditions were obtained. The mechanistic investigation via ESI-MS indicated that the reaction pathway followed the Mannich route. Experimental and theoretical kinetic analyses of the L-proline-catalyzed aldol condensation reaction were performed, and the reaction orders of the reactants were obtained by regression. The results showed that L-proline was an efficient catalyst for the production of MAL via aldol condensation under mild conditions.
研究领域:
化学工程
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有机化学
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2021
·
IF 4.539
Yun Liu,Yue-Fei Zhang,Jian Tang,Yuting Tan,Hang Lei,Ying Li,Pengmian Huang,Yan Li
In this study, we developed a novel chitosan-based adsorbent with low cost, high adsorption capacity and marvelous reusability. The adsorbent was prepared in one pot by crosslinking chitosan with acrolein , which was the first attempt to use acrolein as a crosslinking agent to achieve chitosan-based hydrogel (A/CS hydrogel). The A/CS hydrogel not only had the high swelling ratio as many as approximately 1300 times the dry hydrogel, but also has excellent adsorption property for the anion dye acid blue 93 (AB93). Under the optimal adsorption conditions, the adsorption capacity of the adsorbent on AB93 reached up to 1839 mg/g, which realized the ultra-high adsorption capacity. After 12 times of adsorption-desorption cycle, the adsorption rate of the adsorbent to AB93 was still about 90%, which revealed marvelous stability and reusability. The purpose of the present study was to provide a new choice of the elimination and recycle of AB93 and have potential for industrial application.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
CATALYSIS LETTERS
·
2022
·Vol. 153
·期 4
·965-977
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IF 2.936
Zhang Tong,Zhao HuaHua,Yang Jian,Zhao Jun,Yan Liang,Chou Lingjun,Song Huanling
Selective hydrogenation of crotonaldehyde to crotyl alcohol over PDA (polydopamine) modified Co 3 O 4 supported Pt catalysts was investigated in liquid phase. The catalysts which contain PDA and Co 3 O 4 lead to the formation of two kinds of interfaces: Pt-PDA and Pt-Co 3 O 4 , which greatly improves the performance in the hydrogenation of crotonaldehyde. TEM results reveal that the Pt nanoparticles of Pt/Co 3 O 4 @PDA have a smaller size and better dispersion than Pt/Co 3 O 4 . XPS, FT-IR and CO-DRIFTs results indicate that the addition of PDA decreases the electron density of Pt which is favor to the hydrogenation of C=O in crotonaldehyde. The characterization results demonstrate that the interaction between Pt and PDA creates new active interfacial sites and the synergy of Pt-PDA and Pt-Co 3 O 4 is responsible for the excellent performance. Graphical Abstract
研究领域:
催化化学
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
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2021
·
IF 6.165
Yan Li,Jian Tang,Yun Liu,Zhongliang Xiao,Yue-Fei Zhang
In this paper, the adsorption properties of polyacrolein (PA-1) for congo red (CR) and acid blue 93 (AB93) dyes were studied. The effects of pH value, temperature, and contact time on the adsorption effect were investigated, and the prepared PA-1 was characterized. In the binary dyes system, PA-1 can significantly adsorb CR, which can be attributed to the hydrogen bonding interaction between PA-1 and CR, matched molecular size and chemical reaction. Additionally, the concentration of these dyes can be adjusted to regulate the selective adsorption of CR by PA-1. According to molecular dynamics (MD) calculations, the affinity of dimer acrolein (DA) with CR is stronger than that of DA with AB93 and the complexes of DA with CR are more stable, which is the reason why PA-1 can selectively absorb CR. Therefore, PA-1 has a promising prospect in the treatment of multicomponent dyes wastewater.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF POLYMER RESEARCH
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2022
·Vol. 29
·期 11
·1-9
·
IF 3.061
Wang Biao,Wan Xin,Liu Ziqian,Zhong Jinrong,Tan Jinglin,Li Yan,Zhang Yue-Fei
In this paper, the organic gel polyacrolein (PA OG ) was prepared by NaOH-induced ionic polymerization with acrolein as raw material, which presented good adsorption performance on acid fuchsin (AF). It has been characterized using BET, FT-IR, zeta potential measurements, and XPS to determine the structural and physicochemical properties of PA OG . The adsorption performance was examined in relation to contact time, temperature, and pH value. According to the results, polyacrolein gel adsorbent had a fast adsorption rate, and the adsorption process basically reached equilibrium in the first thirty minutes, which agreed with the pseudo-second-order kinetics. It was determined that the adsorption isotherm conformed to the Langmuir model, which was the endothermic spontaneous reaction (ΔH > 0, ΔG < 0). The five executed adsorption–desorption cycles of AF suggested a good reusability of PA OG . These results can help us better understand the adsorption mechanism of PA OG on AF and provide useful treatment method for removing AF.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
·
2020
·Vol. 31
·期 8
·1597-1604
·
IF 1.399
Ma Tianlin,Ding Jianfei,Liu Xueli,Zheng Jiandong,Yun Zhi
Gas phase conversion of glycerol to acrolein over a variety of aluminum phosphate (AlP) catalysts synthesized by a simple replacement reaction method with a variation in calcination temperature (300-700 ºC, AlP-300, AlP-400, AlP-500, AlP-600, and AlP-700, respectively) has been investigated. The textural properties, acidities and coke contents of the samples were also determined. The catalysts were presented in an amorphous state when the AlP sample was calcined below 500 ºC. Further increasing the calcination temperature promoted the formation of orthorhombic α-AlPO4 crystal. The weak acid sites increased when the calcination temperature was raised from 300 to 500 ºC. However, the weak acid sites decreased when the AlP was calcined above 500 ºC. The acidity of the catalyst played a crucial role in the glycerol dehydration reaction. The maximum acrolein selectivity of 66% at 98% glycerol conversion was obtained over AlP-500 catalyst, due to the largest number of acid sites and appropriate textural properties. AlP-700 exhibited the lowest glycerol conversion, owing to the formation of orthorhombic α-AlPO4 crystalline phase and the lowest amount of acid sites under high calcination temperature. The significant reduction in the acidity of the used sample led to a decrease of glycerol conversion.
研究领域:
化学工程
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催化科学
✓ 已验证
DOI
高影响因子
CATALYSIS TODAY
·
2021
·
IF 6.766
Shan Liu,Zhiquan Yu,Yao Wang,Zhichao Sun,Yingya Liu,Chuan Shi,Anjie Wang
Catalytic dehydration of glycerol over solid catalysts provides a sustainable and economic route to producing acrolein. Unsupported MoP catalyst was prepared by temperature-programmed-reduction method and used for the gas-phase glycerol dehydration. The catalyst was characterized by means of XRD, SEM, TEM, NH 3 -TPD, Py-IR, XPS, TG-DSC, and N 2 adsorption-desorption. It is indicated that the acidic P OH and M oOH groups, which are usually associated with the weak or moderate strength of Brønsted acid sites, were presented on the surface of MoP. The effects of reaction temperature and carrier gas flow rate on glycerol conversion and acrolein selectivity were investigated over MoP. The selectivity to acrolein was up to 89.0 % and kept constant in a 50-h run at 240 °C. The gradual decrease of glycerol conversion might be related to the insoluble carbonaceous materials deposited on the catalyst surface.
研究领域:
催化化学
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材料科学
·
可再生能源
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）