Chemistry-An Asian Journal
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2021
·Vol. 16
·期 15
·2113-2117
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IF 4.568
Da Yang,Guang-Zhao Zhou,Long-Li Zhang,Huan Liu
Graphical The hydroamidocarbonylation of alkynes with amides was accomplished over a bifunctional ligand based Pd catalyst. The hydroamidocarbonylation of alkynes with amides allows for the synthesis of α,β-unsaturated imides with the advantage of 100% atomic economy. Herein, the bifunctional ligand ( L1 ) containing a sulfonic acid group (-SO 3 H) and phosphino-fragment enable the Pd catalyst to accomplish the hydroamidocarbonylation of alkynes with amides. It was found that, due to an intramolecular synergetic effect, the L1 -based Pd-catalyst exhibited much higher activity than the individual mechanical mixtures of Xantphos-based Pd-complex and MeSO 3 H. The formation and stability of Pd-H species were promoted by the presence of L1 , which was verified by in situ high-pressure FT-IR analysis. Under the optimized conditions, the target products of the branched imides were obtained with yields in the range of 46–87% over the L1 -based Pd-catalyst. Advantageously, as an ionic ligand, the L1 -based Pd-catalyst could be recycled for 4 runs in the ionic liquid of [Bmim]NTf 2 without any obvious activity loss and detectable metal leaching.
研究领域:
有机化学
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催化化学
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DOI
PubMed
高影响因子
Energy Material Advances
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2024
·
IF 14.8
Junhao Zhang,Yadong Wang,Yuqiong Kang,Hao Du,Tianding Jia,Jiahui Xu,Yonglin Huang,Yun Zhao,Feiyu Kang,Baohua Li
Sodium-ion batteries (SIBs) have been commercialized in 2023 and are expected to capture a substantial market share in the future. However, the material systems in SIBs are very similar to those in lithium-ion batteries (LIBs), which necessitate consideration of recycling in terms of safety issues, environmental concerns, and economic values. In this study, we present the first evaluations of the disassembly of spent commercialized SIBs and the leaching and regeneration of their cathode material (NaNi1/3Fe1/3Mn1/3O2). We find that pretreatment of SIBs recycling offers advantages, particularly in separating the cathode and removing impurities from the material surface. The primary challenge in recycling is that failed cathode materials are difficult to dissolve in traditional inorganic acids, with an extraction rate of only 57.4% even when a reducing agent is added. Fortunately, there is a possibility for the failed NaNi1/3Fe1/3Mn1/3O2 regeneration. By replenishing sodium and repairing the structure through thermal treatment, the capacity can be restored to 109.4 mAh g−1, with potential practical applications. Economic analysis indicates that the recycling of spent SIBs through cathode material regeneration results in a profit of $3.76 kg−1 battery, even surpassing the $2.64 kg−1 battery profit from LIB recycling. We hope that this research will provide a foundation for SIB recycling.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
POLYMER
·
2019
·
IF 3.771
Siyuan Xu,Feng Wu,Zhikai Li,Xiang Zhu,Xiaohong Li,Lian Wang,Yongjin Li,Yingfeng Tu
Typical semicrystalline aromatic polyesters are synthesized via the condensation polymerization of aromatic diacids with excess diols in vacuum. We demonstrate here a green cascade polycondensation-coupling ring-opening polymerization (PROP) method for the facile incorporation of diols into polyesters in N 2 , utilizing cyclic oligo(butylene terephthlate)s as monomer and bio-based 1,10-decanediol as initiator. Poly(butylene- co -decylene terephthalate) (PBDT) copolyesters are synthesized with high atom economy (87–99%), and their structures are characterized and confirmed by the 1 H quantitative NMR, two dimensional 1 H– 1 H gCOSY and DOSY NMR spectra . Property investigations reveal that with the increment of decanediol content, the glass transition temperature , melting temperature, storage modulus and Young's modulus for PBDT copolyesters decrease, while the toughness increases, respectively. Our results provide a high atom economy PROP method for the synthesis of sustainable PBDT copolyesters, which have lower processing temperatures and improved ductility than poly(butylene terephthalate) (PBT) homopolymers , and could draw attentions for further investigations on the green synthesis of other copolyesters.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Water Process Engineering
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2023
·
IF 7
Jingjing Sun,Shangqing Chen,Yanan Dong,Junfeng Wang,Yi Nie
The removal of hardness and silicon in the reverse osmosis influent is urgently desirable in view of wastewater purification and reuse. However, the development of cost-effective method reducing the hardness and silicon to low level is challenging. Herein, the single step process and double step precipitation process were proposed, aiming at minimize the adverse effect of influent wastewater on reverse osmosis membranes. The optimal dosages of precipitants (FeCl 3 and MgCl 2 ) and the effects of pH values and time were investigated. In the double step process, the concentrations of total hardness and silicon reached the lowest values (11.0 mg·L −1 and 2.1 mg·L −1 ) by adding 400 mg·L −1 MgCl 2 and 300 mg·L −1 FeCl 3 . Subsequently, four schemes for the wastewater treatment were proposed, which scheme D using both FeCl 3 and MgCl 2 as precipitants obtained the lowest cost (1.20 $·t −1 ). This work could provide technological support for removing total hardness and silicon from industrial wastewater and industrial wastewater recycling.
研究领域:
环境工程
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废水处理
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产品关联
DOI
高影响因子
Journal of Cleaner Production
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2024
·
IF 9.7
Haoran Wu,Xueli Chang,Yuli Wang,Xiaoyang Zheng,Chun Chang,Xiuli Han
This study provides an in-depth insight into the kinetics of corn cobs hydrolysis over formic acid to produce xylose and assesses the economic performance of the clean production process. The effects of reaction time, reaction temperature, and the solid-liquid ratio on the xylose yield were optimized by the response surface methodology. The results show that a high yield of xylose (29.9%) can be obtained under optimal conditions of a solid-liquid ratio of 1:10.15, 115.5 °C, and 66 min. The crystallization yield and purity of xylose reached 85% and 90%, respectively. Additionally, a mixed model consisting of a shrinking core model and a pseudo-first-order kinetics model was first proposed to elucidate the kinetics of corn cobs hydrolysis to xylose. Kinetic studies revealed that the depolymerization of lignocellulosic matrix to hemicellulose was the rate-determining step of the overall hydrolysis. Techno-economic analysis showed that the financial internal rate of return (FIRR) was 36.33% at the end of the project lifetime, which was much higher than the benchmark value of 15% for chemical enterprises. In addition, the investment profit margin was 52.11%, which was higher than the industry standard of 26%. The selling price of xylose was the main driving factor affecting FIRR.
研究领域:
生物化学
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化工工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CONTAMINANT HYDROLOGY
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2024
·
IF 3.5
Yuting Song,Hongyan Deng,Wenbin Li,Shuni Zhou,Xin Liu
To study the pollutants immobilization and economy of biologically amended coastal soil , Alternanthera philoxeroides biomass (Bm), biochar (Bc), and dodecyldimethyl betaine (BS) modified Bc (BS-Bc) were used to amend coastal soil from Jialing, Fu, and Qu River. A runoff experiment was used to simulate the longitudinal migration and morphological changes of Pb(II) and chlortetracycline (CTC) in each amended coastal soil, and the economy of pollutants immobilization by different amended coastal soil were compared. The equilibrium time of Pb(II) and CTC in each amended coastal soil ranked in the order of BS-Bc-amended > Bc-amended > Bm-amended > unamended coastal soil. The average Pb(II) and CTC flow rate in different amended coastal soils presented an opposite trend with the equilibrium time. Pb(II) and CTC content all reduced with the increasing runoff length. Under the same soils, the content changes presented Bm and Bc amended > unamended > BS-Bc amended. CEC and clay content of coastal soils were the key factors affecting Pb(II) and CTC immobilization. The immobilization mechanisms were electrostatic attraction, ion exchange, surface precipitation, and complexation to Pb(II) and ion exchange and complexation to CTC. The economy of Pb(II) and CTC immobilization ranged from 0.5 to 9.0 and from 1.0 to 5.4 mg/¥, and coastal soil amended by BS-Bc had practical application value and high economy.
研究领域:
环境科学
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生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Today Chemistry
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2021
·
IF 8.301
P. Jia,Y. Ma,F. Song,C. Liu,L. Hu,Y. Zhou
Over the last 60 years, phthalate plasticizer production has increased manifold, owing to their inexpensive, multipurpose, durable, and lightweight nature. These characteristics have raised the demand for phthalate plasticizers that will continue to grow over the coming years. However, with increased phthalate plasticizer production comes increased water pollution and soil pollution, as well as serious harm to human health. The recent studies mainly focused on plasticizing properties, plasticizing mechanism, and raw material sources, but the relationship of chemical structure of the plasticizer and its toxicity has never been reported. In this study, we synthesized three kinds of renewable atom-efficient dendrimer-like plasticizers based on toxic tung oil (DPTs). Plasticizing properties, plasticizing mechanism, and toxicity of DPTs were investigated. The results showed that polyvinyl chloride (PVC)/40 phr DPT has superior plasticizing properties and migration resistance than PVC/40 phr dioctyl phthalate. All DPT plasticizers have toxic doses of 5000 mg/kg and are non-toxic. These DPTs are potential to replace reproductive toxic phthalate plasticizers in food packaging materials, toys, and medical equipment .
研究领域:
材料科学
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环境科学
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生物学
✓ 已验证
产品关联
DOI
高影响因子
Frontiers in Plant Science
·
2023
·
IF 5.6
Pengfei Deng,Ruoyong Yin,Huiling Wang,Leiru Chen,Xiaoqing Cao,Xiaoniu Xu
The intercropping practice has been regarded as a practical land-use selection to improve the management benefits of Bletilla striata plantations. The reports about the variety of economic and functional traits of Bletilla pseudobulb under intercropping systems were limited. The present study investigated the variation of economic and functional traits of Bletilla pseudobulb under different intercropping systems (the deep-rooted intercropping system: B. striata - Cyclocarya paliurus, CB; and the shallow-rooted intercropping system: B. striata - Phyllostachys edulis, PB). The functional traits were analyzed through non-targeted metabolomics based on GC-MS. The results indicated that the PB intercropping system significantly decreased the yield of Bletilla pseudobulb while significantly increasing the total phenol and flavonoids compared with the control (CK). However, there were no significant differences in all economic traits between CB and CK. The functional traits among CB, PB, and CK were separated and exhibited significant differences. Under different intercropping systems, B. striata may adopt different functional strategies in response to interspecific competition. The functional node metabolites (D-galactose, cellobiose, raffinose, D-fructose, maltose, and D-ribose) were up-regulated in CB, while the functional node metabolites (L-valine, L-leucine, L-isoleucine, methionine, L-lysine, serine, D-glucose, cellobiose, trehalose, maltose, D-ribose, palatinose, raffinose, xylobiose, L-rhamnose, melezitose, and maltotriose) were up-regulated in PB. The correlation between economic and functional traits depends on the degree of environmental stress. Artificial neural network models (ANNs) accurately predicted the variation in economic traits via the combination of functional node metabolites in PB. The correlation analysis of environmental factors indicated that Ns (including TN, NH4+-, and NO3--), SRI (solar radiation intensity), and SOC were the main factors that affected the economic traits (yield, total phenol, and total flavonoids). TN, SRI, and SOC were the main factors affecting the functional traits of the Bletilla pseudobulb. These findings strengthen our understanding of the variation of economic and functional traits of Bletilla pseudobulb under intercropping and clarify the main limiting environmental factors under B. striata intercropping systems.
研究领域:
植物学
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药用植物学
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生态学
✓ 已验证
DOI
高影响因子
ACS Omega
·
2020
·
IF 2.87
Shujuan Guo,Yanjie Zhang,Yuansong Ye,Jinzhe Song,Mengru Li
Synthesis of a Ti-incorporated zeolite using a simple and economical method has recently become a focus of attention. The direct hydrothermal synthesis of Ti-MWW is most commonly applied; however, it is challenging to perform and exhibits low titanium utilization. An innovative strategy of synthesizing Ti-MWW is proposed in the present study by simply treating the ERB-1 precursor of an MWW-type boron silicate with a H2TiF6/HNO3 solution. This significantly shortens the Ti grafting process from 5 days to only a few hours and reduces the use of the structure-directing agent hexamethyleneimine (HMI); furthermore, no extraframework Ti is observed in the precursor, indicating good atomic economy. Typically, a piperidine (PI)-treated sample Ti-MWW2–1-PI exhibits a higher conversion (76.6%) than the original Ti-MWW (44.8%) in the epoxidation of 1-hexene. X-ray diffraction (XRD), inductively coupled plasma (ICP), and transmission electron microscopy (TEM) techniques are used to explain in detail the probable mechanism underlying the incorporation of Ti species into the MWW framework. X-ray photoelectron spectroscopy (XPS) is employed to study the coordinate state of the Ti and F species in the samples after treatment with a piperidine solution. This method can be applied to synthesize other kinds of lamellar-structured zeolites with heteroatoms.
研究领域:
催化化学
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
ChemSusChem
·
2024
·
IF 7.5
Ke-An Wang,Zhen-Long Wang,Hai-Bin Zhu
Graphical Efficient electrosynthesis of methyl formate is achieved through the facile reaction between formaldehyde produced from anodic methanol oxidation, and methoxy bromide which is in-situ generated by reaction of Br 2 from anodic oxidation of Br − and methoxide from cathodic methanol reduction. This method features high atomic economy only producing valuable methyl formate and hydrogen gas. Methyl formate (MF) is one of the most important chemical commodities, which has a wide range of applications. Due to environmental friendliness, mild reaction conditions, and easy operations, electrosynthesis of MF has garnered increasing attention in recent years. In this work, we reported an electrosynthesis route toward MF in a halide-containing methanol solution. The thorough mechanistic investigations point out that electrosynthesis of MF is accomplished by instant reaction between aldehyde from anodic methanol oxidation, and methoxy bromide (CH 3 OBr) that is in-situ generated by reaction of Br 2 from anodic oxidation of Br − with methoxide (CH 3 O − ) from cathodic reduction of methanol. This method features high atomic economy only producing valuable MF and hydrogen gas, and shows distinct advantages compared to the reported MF electrosynthesis methods. Even at 200 mA/cm 2 , the faradaic efficiency (FE) of MF remains consistently around 60 % at the anode while a 100 % FE hydrogen gas is produced at the cathode.
研究领域:
化学工程
·
电化学
·
绿色化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Chem Catalysis
·
2025
·
IF 11.6
Xiaoshan Zheng,Rito Yanagi,Zhenhua Pan,Chong Zhou,Tian Liu,Baoliang Chen,Kenji Katayama,Shu Hu,Chiheng Chu
Particulate photocatalysis (PC) has shown great potential in sustainable chemical synthesis. Until now, developing a scalable PC system remains a major challenge hurdling the practical application of hydrogen peroxide (H 2 O 2 ) photosynthesis. Here, we report a flexible hydrophobic photocatalyst sheet based on visible-light-responsive bismuth vanadate (BiVO 4 ) photocatalysts with (λ < 520 nm) to achieve flow-transport-dependent cascade photocatalytic H 2 O 2 production. Using dissolved oxygen from the air and deionized water or tap water, the flexible sheets showed solar-to-chemical conversion (STC) efficiency of 0.11%. These BiVO 4 photocatalyst sheets were arranged in a 4 × 4-panels array in a 1-m 2 flow-by reactor and achieved 1-month outdoor stability under diurnal solar cycles. We utilized this solar-produced H 2 O 2 solution for disinfection, achieving >99.9% inactivation of a coronavirus surrogate in 60 min. Techno-economic analysis (TEA) shows that at 2% STC efficiency, the cost becomes comparable to commercial approaches due to the elimination of transportation, storage, and deployment costs.
研究领域:
环境科学
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材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
GREEN CHEMISTRY
·
2020
·Vol. 22
·期 16
·5274-5284
·
IF 9.48
Puxiang Yan,Ming Xia,Shanshuai Chen,Wanying Han,Hongliang Wang,Wanbin Zhu
5-Hydroxymethylfurfural (HMF), a versatile biomass derivative building block, is recognized as a bridge between biorefinery and petrorefinery for the production of sustainable fuels and chemicals. Despite extensive research, the industrial production of HMF is far from being realized. The design of novel systems for biomass processing should fully consider the properties of feedstocks and products, and only in this way can we realize the efficient and economical utilization of biomass on industrial scales. Here, we break through the limitations of traditional technologies and report a novel strategy with simple operation, high efficiency, and low cost for HMF production. By the simultaneous circulation of a reaction phase and an extraction phase, and the separation of a HMF extraction process from carbohydrate dehydration conditions, carbohydrates could be continuously and stably dehydrated to HMF in high yields. Over 94 mol% yield of HMF was obtained from fructose and nearly 70 mol% was obtained from glucose, both of which were significantly higher than all reported data obtained in water. Techno-economic analysis demonstrated that HMF could be produced at a minimum selling price of $1716 per ton and $1215 per ton from fructose and glucose, respectively, which brings hope and motivation for the commercial production of HMF.
研究领域:
生物化学工程
·
可再生能源
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）