PHASE TRANSITIONS
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2020
·
IF 1.004
Shihua Zhang,Xuelai Zhang,Xiaofeng Xu,Yi Zhao
In order to find a low temperature phase change material with a temperature range of 2–8°C, decyl alcohol (DA) and myristyl alcohol (MA) binary eutectic mixture was prepared based on theoretical calculation, with a mass ratio of DA: MA=87:13. DA-CA/EG with an optimal mass ratio of DA-MA: EG=14:1 was obtained after vacuum adsorption. Scanning electron microscope and Fourier transformation infrared spectroscopy results show that DA-MA was uniformly distributed in the porous network structure of EG due to physical action. Phase change temperature and latent heat of DA-MA/EG were measured at 3.55°C and 172.3 J·g−1, and the thermal conductivity was 0.942 W·(m·K)−1, which was 3.4 times higher than DA-MA. After 500 high and low temperature cycles, DA-MA/EG did not change much and still maintained good stability. Overall, the prepared DA-MA/EG composite PCM had great application prospects in cold chain logistics.
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
·
2023
·
IF 2.3
Qin Qin,Cao Weiqi,Zhaxi DaWa,Chen Xianyong,Andreeva Daria V.,Chen Kefan,Yang Shuai,Tian Hao,Shaker Majid,Jin Zhan,Novoselov Kostya S.
Phase change materials (PCMs) offer efficient solutions for energy sustainability. Here, we used 1-decanol, expanded graphite (EG) with high thermal conductivity, and silica aerogel (SA), which is often used for thermal insulation protection, to prepare composite PCMs (EG-PCM and SA-PCM) with stable shape through the vacuum absorption method. The leakage rate test after heat treatment determined the optimum contents of EG and SA in the composite PCMs to be 9 and 14 wt.%, respectively. Even after 220 heating/cooling cycles, the fabricated composite PCMs still maintain good thermal stability. The thermal conductivity enhancement of EG-PCM and SA-PCM to 16.09 times and 1.21 times of the neat PCM, respectively. Moreover, we tested the prepared two composite PCMs by yogurt preservation experiments in a cold chain transport portable box, which proved that they could effectively maintain the temperature and acidity of yogurt for several hours without any cooling system. Based on these results, EG-PCM and SA-PCM have broad application prospects in cold chain transport of temperature-sensitive products such as food, medicine, and vaccine.
研究领域:
材料科学
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能源工程
·
食品科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS A-GENERAL
·
2022
·
IF 5.723
Yue Li,Huan Ren,Daolai Sun,Xinqiang Zhao,Satoshi Sato
Liquid-phase catalytic hydrodeoxygenation of 1,2-decanediol (1,2-DDO) to form 1-decanol was performed over various non-noble metal-loaded acidic catalysts, and Cu loaded on amorphous SiO 2 -Al 2 O 3 exhibited a high catalytic activity for the formation of 1-decanol. A high 1-decanol selectivity of 84.7% with a complete 1,2-DDO conversion was obtained within only 15 min over the Cu/SiO 2 -Al 2 O 3 at 250 °C under 10 MPa H 2 pressure. The temperature at 250 °C and the H 2 pressure higher than 3 MPa were conducive to the efficient production of 1-decanol from 1,2-DDO. In contrast to the previously reported noble metal catalysts, Cu/SiO 2 -Al 2 O 3 required a relatively high reaction temperature, while an extremely high 1-decanol productivity of 78 mmol g cat −1 h −1 could be achieved. Meanwhile, the hydrodeoxygenation of 1,2-decanediol over Cu/SiO 2 -Al 2 O 3 proceeded via a reaction mechanism in which decanal was formed as the intermediate. In addition, the Cu/SiO 2 -Al 2 O 3 catalyst was reusable at least five times without serious deactivation.
研究领域:
催化化学
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能源化学
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2021
·Vol. 11
·期 26
·16096-16105
·
IF 3.361
Zhenya Xu,Hui Su,Jian Zhang,Wensen Liu,Zhaowu Zhu,Jinggang Wang,Jing Chen,Tao Qi
The recovery of boron from salt lake brines has become an effective way to meet the increasing demand, particularly in China. In this study, nine commercially available monohydric alcohols with different structures were selected for boron extraction from a salt lake brine with high magnesium content. Passing through the optimization, isodecanol was finally selected for the detailed study on boron recovery from brine due to its moderate viscosity, lower solubility water entrainment and high extraction efficiency. Parameter effects on boron extraction were systematically studied, including equilibrium pH, organic concentration, phase ratio, temperature, and salting-out effect. A McCabe–Thiele diagram was established to determine the boron extraction and stripping stages. An organic solution containing 2.5 mol L−1 isodecanol was used for a simulated three-stage counter-current extraction test under optimized extraction conditions, and the boron extraction reached 99.07%. A simulated four-stage counter-current stripping test was carried out with water with the stripping efficiency of 98.71%. In total the boron recovery reached 97.79%. Additionally, the mechanism of boron extraction by isodecanol was investigated using both slope analysis method and Fourier transform infrared spectroscopy (FTIR). The stoichiometric ratio of isodecanol to boron required to form boric acid ester was found to be 1.268. These results indicate that the extraction system has great potential for commercial application in boron recovery from salt lake brines with high magnesium content.
研究领域:
化学工程
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环境科学
✓ 已验证
DOI
高影响因子
MOLECULAR PLANT PATHOLOGY
·
2016
·Vol. 19
·期 1
·49-58
·
IF 4.335
Shanshan Xie,Haoyu Zang,Huijun Wu,Faheem Uddin Rajer,Xuewen Gao
Summary Recent investigations have demonstrated that bacteria employ the volatile compounds they produce during interactions with other organisms, such as plants, fungi, nematodes and bacteria. However, studies focused on the antibacterial activity of plant growth-promoting rhizobacteria (PGPR) volatiles against bacterial phytopathogens are still rare. In this study, Bacillus strain D13, which is antagonistic to Xanthomonas oryzae pv. oryzae ( Xoo ), was isolated and screened. Volatile compounds emitted from strain D13 reduced the colony diameter and cell motility of Xoo cultured in divided Petri plates. Transmission electron micrograph analysis showed concentration in cytoplasm and altered surface morphology in the majority of Xanthomonas cells after co-cultivation with strain D13. Transcriptional expression of virulence-associated genes in Xoo was repressed. Based on gas chromatography/mass spectrometry (GC/MS) analysis, 12 volatile compounds specifically produced by strain D13 were identified. Among them, decyl alcohol and 3,5,5-trimethylhexanol inhibited the growth of Xoo at minimum inhibitory amounts of 0.48 and 2.4 mg, respectively. Furthermore, transcriptional expression of virulence-associated genes was also repressed by decyl alcohol and 3,5,5-trimethylhexanol. These results are useful for a better understanding of the biocontrol mechanisms of Bacillus .
研究领域:
微生物学
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植物病理学
·
农学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Xuezhi Wang,Yuan Sun,Ming Liu,Guyu You,Ting Fan,Hongmiao Wu,Liwei Xu,Xiaoli Zhao,Dongjie Ma
Polylactic acid (PLA) plastic is increasingly recognized as a sustainable alternative to petroleum-based plastics. However, its biodegradability remains a challenge, requiring substantial improvements to its biodegradation efficiency. This study explored the use of combined hydrothermal treatment (HTT) (160°C–240°C) and anaerobic digestion (AD) to improve methane yield from PLA. HTT enhanced significant structural changes in PLA, yielding 2-hydroxypropanoic acid, 1-decanol, 1-tetradecanol, pentan-2-one, and butyl 2-hydroxypropanoate, which facilitated PLA degradation. The methane yield from AD of hydrothermal-treated PLA (HTT-PLA) products at 180°C was 493 NmL/g-volatile solid, a 21.4-fold increased compared to untreated PLA. Genomic and proteomic analyses identified key genes and proteins involved in HTT-PLA products biodegradation, elucidating pathway for HTT-PLA products transformation in biodegradation process. The residues from AD of HTT-PLA products at 180°C exhibited rapeseeds germination index of approximately 90% and maintain stability locomotion and vitality in Caenorhabditis elegans , indicating their suitability for land application. Enhanced methane production offers a renewable energy source, and reduces PLA’s environmental footprint, providing significant practical implications for bioplastic waste management and sustainability.
研究领域:
环境科学
·
生物技术
·
可再生能源
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微生物学
·
毒理学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）