Sustainable Energy & Fuels
·
2018
·Vol. 2
·期 8
·1863-1869
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IF 0
Jiawei Xie,Lei Zhang,Xiangwen Zhang,Peijuan Han,Junjian Xie,Lun Pan,De-Rong Zou,Song-Hua Liu,Ji-Jun Zou
Biofuels synthesized from lignocellulose-derived platform chemicals are very attractive for sustainable development. Here we reported a new and facile route to synthesize multi-substituted cycloalkanes with a high density and low freezing point using isophorone and furanic aldehydes (furfural and 5-hydroxymethylfurfural), by solvent-free aldol condensation, followed by hydrodeoxygenation. Catalysts were screened and NaOH showed good performance. The reaction conditions including catalyst dosage, isophorone/furanic aldehyde ratio, temperature and solvent were optimized, and finally the yields of 70.0% for isophorone/furfural and 72.8% for isophorone/5-hydroxymethylfurfural were obtained. Pt/HZSM-5 was prepared as the bifunctional catalyst for hydrodeoxygenation of the condensed product. The resultant multi-substituted cyclohexanes derived from isophorone/furfural and isophorone/5-hydroxymethylfurfural have a density of 0.813 g mL−1 and 0.846 g mL−1 respectively and both have a freezing point lower than −75 °C, and are very promising as stand-alone fuels or additives of other biofuels.
研究领域:
生物化学
·
可再生能源
✓ 已验证
产品关联
DOI
CHEMICAL ENGINEERING SCIENCE
·
2019
·
IF 3.372
Genkuo Nie,Yiying Dai,Yanan Liu,Junjian Xie,Si Gong,Nisha Afzal,Xiangwen Zhang,Lun Pan,Ji-Jun Zou
Synthesizing high performance jet fuel from biomass provides potential way to convert low-cost biomass to valuable fuels and meets the requirements of sustainable development. Here, we report a one-pot synthesis of high density and low freezing point jet-fuel-ranged blending from bio-derived phenol and cyclopentanol, which is with high yield, simple and low-cost for scale-up. With the co-presence of acid catalyst like Hβ and metal catlayst like Pd/C, the alkylation first happens to produce bi-and tri-cyclic compounds under N 2 atomphere, then in H 2 atmosphere the remained reactant is partly hydrogenated and takes part in alkylation again to produce cyclic compounds, finally hydrodeoxygenation happens to convert all the compounds to cyclic hydrocarbons. A jet-fuel-blending containing bi- and tri-cyclic alkanes is obtained at high molar yield of 83.9% from the starting reactant, which shows high density of 0.89 g/mL, freezing point lower than −75 °C. Especially, the major component, i.e. cyclopentylcyclohexane shows much better low-temperature properties compared with reported hydrocarbons with similar molecular structure. This result provides a simple, low-cost way to synthesize high performance jet fuel from biomass.
研究领域:
生物化学
·
可再生能源
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2023
·Vol. 19
·期 41
·2302339
·
IF 13.3
Lizhong Wang,Guochen Jiang,Dongyu Zhu,Ze Tian,Changhao Chen,Xinyu Hu,Rui Peng,Daizhou Li,Hongjun Zhang,Huanyu Zhao,Peixun Fan,Minlin Zhong
Liquid fluidity is a most key prerequisite for a broad range of technologies, from energy, fluid machineries, microfluidic devices, water, and oil transportation to bio-deliveries. While from thermodynamics, the liquid fluidity gradually diminishes as temperature decreases until completely solidified below icing points. Here, self-driven droplet motions are discovered and demonstrated occurring in icing environments and accelerating with both moving distances and droplet volumes. The self-driven motions, including self-depinning and continuous wriggling, require no surface pre-preparation or energy input but are triggered by the overpressure spontaneously established during icing and then continuously accelerated by capillary pulling of frosts. Such self-driven motions are generic to a broad class of liquid types, volumes, and numbers on various micro-nanostructured surfaces and can be facilely manipulated by introducing pressure gradients spontaneously or externally. The discovery and control of self-driven motions below icing points can greatly broaden liquid-related applications in icing environments.
研究领域:
材料科学
·
物理化学
·
微流体技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2014
·
IF 2.045
Xiaodong Jiang,Guijin He,Xi Wu,Yongsheng Guo,Wenjun Fang,Li Xu
Experimental data of density, viscosity, refractive index, and freezing point have been measured for the binary mixtures of 1,1′-bicyclohexyl with methylcyclohexane, ethylcyclohexane, and butylcyclohexane at different temperatures from T = (293.15 to 318.15) K and the pressure p = 0.1 MPa. The values of density, viscosity, and refractive index at a given temperature, along with the freezing point, increase continuously versus the increasing mole fraction of 1,1′-bicyclohexyl in the binary mixtures. The excess molar volumes (VmE), the viscosity deviations (Δη), and the refractive index deviations (ΔnD) are then calculated and are fitted to the Redlich–Kister equation. All of the VmE and Δη values are observed to be negative for these three binary systems over the whole composition range, which are discussed from the molecular interactions and structural effects. The fundamental data are provided for the preparation of advanced hydrocarbon fuels.
研究领域:
物理化学
·
燃料科学
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-16
·
IF 14.7
Hao Baojiu,Zhou Jinqiu,Yang Hao,Zhu Changhao,Wang Zhenkang,Liu Jie,Yan Chenglin,Qian Tao
The breakthrough in electrolyte technology stands as a pivotal factor driving the battery revolution forward. The colloidal electrolytes, as one of the emerging electrolytes, will arise gushing research interest due to their complex colloidal behaviors and mechanistic actions at different conditions (aqueous/nonaqueous solvents, salt concentrations etc.). Herein, we show “beyond aqueous” colloidal electrolytes with ultralow salt concentration and inherent low freezing points to investigate its underlying mechanistic principles to stabilize cryogenic Zn metal batteries. Impressively, the “seemingly undesired” concentration polarization at the interface would disrupt the coalescence stability of the electrolyte, leading to a mechanically rigid interphase of colloidal particle-rich layer, positively inhibiting side reactions on either side of the electrodes. Importantly, the multi-layered pouch cells with cathode loading of 10 mg cm –2 exhibit undecayed capacity at various temperatures, and a relatively high capacity of 50 mAh g –1 could be well maintained at −80 °C.
研究领域:
电池技术
·
电化学
·
材料科学
·
胶体化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Chemistry-An Asian Journal
·
2024
·
IF 3.5
Zhongdong Tian,Yuan Gao,Peishu Tian,Silong Tian,Fengwei Shi,Jun Mei
Rechargeable and flexible aqueous batteries (ABs) have emerged as one of promising energy devices which is primarily due to the safety, environmental friendliness and economic efficiency. However, because of the freezing behavior of aqueous electrolytes, most ABs possess poor performance when the working temperature drops below zero. To solve this problem, a gel polymer electrolyte (GPE) with high ionic conductivity (IC) and frost-resistance is designed for aqueous Zn−Li hybrid batteries by a biomass-based polymers complex consisting of carboxyl modified sodium alginate (SA) and zwitterionic betaine (BA). Introducing iminodiacetic acid to enrich −COOH groups along the SA main chains could improve IC of the prepared GPEs to 41.27 and 20.96 mS cm −1 at 20 and −20 °C, respectively. At −20 °C, the discharge capacity of the resultant cell is two times higher than that of the liquid electrolyte-based cell, and the cell presents a capacity retention of 91.6 % after 300 charge/discharge cycles at 1 C. This proposed strategy greatly improve the IC of GPEs at freezing temperature, which is expected to broaden the practical application of GPEs in wide range of temperature.
研究领域:
能源存储
·
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Green Energy & Environment
·
2022
·
IF 12.781
Guoshen Yang,Gangrui Qu,Chi Fang,Jie Deng,Xianqi Xu,Yinghao Xie,Tian Sun,Yachao Zhu,Jiaxin Zheng,Hang Zhou
The recent advances in aqueous magnesium-ion hybrid supercapacitor (MHSC) have attracted great attention as it brings together the benefits of high energy density, high power density, and synchronously addresses cost and safety issues. However, the freeze of aqueous electrolytes discourages aqueous MHSC from operating at low-temperature conditions. Here, a low-concentration aqueous solution of 4 mol L −1 Mg(ClO 4 ) 2 is devised for its low freezing point (−67 °C) and ultra-high ionic conductivity (3.37 mS cm −1 at −50 °C). Both physical characterizations and computational simulations revealed that the Mg(ClO 4 ) 2 can effectively disrupt the original hydrogen bond network among water molecules via transmuting the electrolyte structure, thus yielding a low freezing point. Thus, the Mg(ClO 4 ) 2 electrolytes endue aqueous MHSC with a wider temperature operation range (−50 °C–25 °C) and a higher energy density of 103.9 Wh kg −1 at 3.68 kW kg −1 over commonly used magnesium salts (i.e., MgSO 4 and Mg(NO 3 ) 2 ) electrolytes. Furthermore, a quasi-solid-state MHSC based on polyacrylamide-based hydrogel electrolyte holds superior low-temperature performance, excellent flexibility, and high safety. This work pioneers a convenient, cheap, and eco-friendly tactic to procure low-temperature aqueous magnesium-ion energy storage device.
研究领域:
电化学
·
能源存储
·
材料科学
·
超级电容器
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Yan-Fei He,Kai Cheng,Zi-Tao Zhong,Xiao-Lin Hou,Chang-Zhi An,Wei Chen,Bo Liu,Yuan-Di Zhao
A method for simultaneous labeling and multicolor fluorescence imaging of different hepatic immune cells below freezing point is established based on quantum dots . In the experiment, carbon quantum dots with emission wavelength of 435 nm, [email protected] quantum dots at 542 nm and [email protected] quantum dots at 604 nm are synthesized respectively, it is found that when the mass fractions of KCl (as antifreeze) are 12 %, 14 %, and 12 %, respectively, the three quantum dot dispersion systems remain liquid state at −20 °C. After they are conjugated with the corresponding secondary antibodies, agarose gel electrophoresis , circular dichroism and capillary electrophoresis confirm the effectiveness of conjugation. By indirect immunofluorescence method, the above three quantum dot fluorescent probes are used to simultaneously and specifically target a variety of liver immune cells, and the multi-color simultaneous imaging of different liver immune cells is realized under the same excitation wavelength, it is found that hepatic macrophages are arranged radially in the liver, hepatic stellate cells present punctate distribution, and hepatic sinusoidal endothelial cells present circular distribution, which is consistent with the results of H&E staining and ultrathin section TEM. This study provides an important technical means for elucidating the structure and function of the liver.
研究领域:
免疫学
·
生物技术
·
细胞生物学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）