ENERGY
·
2025
·
IF 9.4
Haojie Zhu,Junbiao Li,Yuan Zhang,Zhipeng Liu,Junda You,Guoqing Ma,Ling Fu,Senran Hao,Hongxin Yang,Shuo Zhai,Pengfei Wang,Jing Zhu,Suling Shen,Jialiang Chen,Ying Teng,Bin Chen,Heping Xie
The traditional utilization of coal fuels is primarily through direct combustion to generate electricity, with low efficiency and significant carbon dioxide emissions conflicting with the goal of carbon neutrality. Here, for the first time, we proposed a novel electrochemical system to achieve the tri-generation of hydrogen, power, and methane from coal-based fuels, with CO 2 emission efficiency reduced in tail gas, enabled by protonic ceramic fuel cells (PCFCs) combined with water gasification of coal and CO 2 methanation. As demonstrated, the system firstly achieved an enhanced hydrogen production rate of up to 34.8 μmol min −1 g −1 from the syngas produced by coal gasification. Sequentially, the system achieved an excellent peak power density of 868 mW cm −2 at 600 °C in the PCFCs fueled by the syngas, enhanced by a catalytic functional layer (CFL, NiMn@YSZ). In addition, the system is able to produce methane at 6.3 mL min −1 during in-situ CO 2 methanation at 500 °C with a current density of 110 mA cm −2 . This work introduces a new electrochemical strategy for efficiently utilizing coal to generate electricity and value-added chemicals.
研究领域:
能源科学
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材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2019
·
IF 5.107
Yunchang Fan,Dongxu Cai,Sheli Zhang,Huiying Wang,Kaigang Guo,Lei Zhang,Lei Yang
The removal of nitrogen compounds by liquid-liquid extraction using ionic liquids (ILs) as extraction solvents has been limited by the lack of easy-to-prepare, low cost and highly efficient ILs. To overcome this limitation, the present work synthesized protic ILs (PILs) via acid-base reaction and investigated their extraction ability for nitrogen compounds (quinoline, indole and carbazole) from model fuel ( n -dodecane). Experimental results suggested that the PIL, triethylammonium p -toluenesulfonate (TEA-TSA), exhibited higher extraction ability for indole and carbazole as compared to the 1-butyl-3-methylimidazolium ([C 4 mim] + ) based ILs due to the stronger π-π interaction between TEA-TSA and nitrogen compounds. Among a number of ILs, TEA-TSA containing a slight excess of p -toluenesulfonic acid (2%, molar percent) was particularly promising as extractant because of its excellent extraction performance for the basic and neutral nitrogen compounds. Furthermore, the suggested PIL could be easily regenerated and reused via a back extraction process. The results showed that extractive denitrogenation using PILs as extractants was a potential technique to produce clean fuel considering their stronger extraction ability, lower-cost and easy-to-prepare characteristics.
研究领域:
化学工程
·
环境科学
✓ 已验证
DOI
高影响因子
COMBUSTION AND FLAME
·
2020
·
IF 4.57
Zhi-Hao Jin,Jin-Tao Chen,Shu-Bao Song,Dong-Xu Tian,Jiu-Zhong Yang,Zhen-Yu Tian
The pyrolysis of three-component surrogate fuel for jet fuel has been studied experimentally in flow reactor using synchrotron photoionization and molecular beam mass spectrometry techniques with temperature range of 850–1150 K. Alkenes are the most abundant products in the decomposition process . Other important intermediates such as alkanes, alkynes, polycyclic aromatic hydrocarbons were also identified and quantified. Detailed kinetic reaction model involving 462 species and 3170 reactions have been developed by validating against the measured results as well as oxidation data reported previously with reasonable predictions. Detailed rate of production and sensitivity analysis indicated T135MCH mainly decay through demethylation and H-abstraction reactions. Moreover, n-propylbenzene consumption is more sensitive to CH 3 than H, while n-dodecane and T135MCH prefer H radical. The reactions between fuel and fuel-derived radicals show limited effect on surrogate fuel consumption. Reactivity changes of NPB and NC 12 H 26 were investigated through the comparison of fuel conversion ratio. The coupling effect was displayed via the common and important sensitive reactions which are related to the H and CH 3 radicals. Present experimental data and reaction model will contribute to a better understanding of combustion behavior of 3C surrogate fuel. Thus, the results of present work could contribute to comprehensive investigation of jet fuel combustion properties .
研究领域:
化学工程
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燃烧科学
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能源研究
✓ 已验证
DOI
高影响因子
FUEL
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2019
·
IF 5.128
Shaoqu Xie,Chuhan Fu,Wenli Song,Yulei Zhang,Conghua Yi
Developing a simple and efficient process for the conversion of biomass to petrol, diesel and jet fuels are our urgent mission due to the limitation of fossil fuels. Biobutanol is an important biomass-derived biofuel that can be converted to longer-chain petrol-range, diesel-range and jet-range fuels. Basing on the obtained concentrated acetone-1-butanol-ethanol (ABE) fermentation broth through a prefractionator, we report a palladium-catalysed alkylation of acetone with ethanol and 1-butanol to more efficiently produce C 5 –C 11 fuel precursors in a reactor, where all the precursors and reactants were separated simultaneously by the salting-out effect of K 3 PO 4 . The precursors include ketones and a small amount of alcohols that can be reduced to alkanes for use as liquid transportation fuels. Tuning the reaction conditions can obtain different proportions of C 5 –C 7 products (monoalkylation) and C 9 –C 11 products (double alkylation) and the overall product contents accounted for up to 82 wt%. More than 99.5% of water from the concentrated ABE fermentation broth was removed by the salting-out effect of K 3 PO 4.
研究领域:
生物化学
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能源科学
✓ 已验证
DOI
高影响因子
FUEL
·
2024
·
IF 6.7
Lei Liu,Zijian Zhou,Xingqiang Zhang,Yue Zhou,Pengxin Zeng,Xingyu Liang,Xiaowei Liu,Minghou Xu
The application of Co-based recyclable zero-carbon fuels, utilizing oxygen both as a heat transfer fluid and reactant, has gained significant attention as a potential solution to address the intermittency challenges associated with zero-carbon renewable sources. However, the widespread adoption of these fuels faces obstacles, particularly when industrial waste heat deviates from the optimal operational temperature range of 900–1000 °C. Despite efforts to modify operation temperatures, the underlying reaction mechanism remains unclear. To elucidate the crucial factors influencing the recovery process of Co-based recyclable zero-carbon fuels, the density functional theory (DFT) method was employed to analyze the deoxygenation process of the spinel structure. This is essential as the recovery and combustion process involve the dissociation and reconstruction of crystal structures. In this study, the desorption steps of oxygen were studied separately. After the complete desorption of the first layer atoms from the slab surface, the second layer is exposed. To ensure structure stability, the surface undergoes reconstruction. The analysis revealed that the concentration of oxygen vacancy of the same type on the slab surface significantly impacts the energy barrier of deoxygenation, particularly in the initial two stages. This finding is further supported by examining the deoxygenation process in Co 2 MO 4 (M=Mn, Mg, Ni, and Cu) fuels, as reported in previous studies. Notably, the surface energy emerged as a key parameter for these Co-based spinel structure fuels. Modifying the surface energy, by lowering it, was identified to enhance the structural stability to increase the recovery temperature. Conversely, improving the surface energy will decrease the stability and lower the recovery temperature. Understanding and manipulating these factors, as proposed in this study, offer avenues for tailoring Co-based recyclable zero-carbon fuels for various industrial processes. This work serves as a crucial guide for further research and development in this field, potentially unlocking new possibilities to broaden the operation temperature range and enhance the performance of these fuels.
研究领域:
能源科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
Energies
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2022
·Vol. 15
·期 3
·1023
·
IF 3.252
Xiaowei Xu,Enlong Liu,Neng Zhu,Fanfu Liu,Feng Qian
As fossil fuels continue to be extracted and used, issues such as environmental pollution and energy scarcity are surfacing. For the transportation industry, the best way to achieve the goal of “carbon neutrality” is to research efficient power systems and develop new alternative fuels. As the world’s largest product of chemicals, ammonia is a new renewable fuel with good combustion energy. It can be used as an alternative fuel to reduce carbon emissions because of its proven production process, low production and transportation costs, safe storage, the absence of carbon-containing compounds in its emissions, and its future recyclability. This paper firstly introduces the characteristics of ammonia fuel engine and its problems; then it summarizes the effects of various ammonia-blended fuels on the combustion and emission characteristics of the engine from the combustion problem of ammonia-blended engine; then the fuel storage of ammonia-blended hydrogen is discussed, the feasibility of hydrogen production instead of hydrogen storage is introduced.Keywords:engine;mixed fuel;hybrid fuel;combustion performance;emissions
研究领域:
能源工程
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环境科学
✓ 已验证
DOI
高影响因子
ACTA PHYSICO-CHIMICA SINICA
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2017
·Vol. 33
·期 8
·1614-1620
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IF 0.767
WANG Xiao-Qiang,LIU Jiang,XIE Yong-Min,CAI Wei-Zi,ZHANG Ya-Peng,ZHOU Qian,YU Fang-Yong,LIU Mei-Lin
A direct carbon solid oxide fuel cell (DC-SOFC) stack was prepared with 3 tubular cells electrically connected in series. To increase carbon storage in the stack, the anode was fabricated outside the tubular cells so that carbon fuel can be loaded at the exterior of the stack, which
is more spacious than the interior. The 3-cell-stack is operated directly with carbon as the fuel and oxygen in ambient air as the oxidant. With a total effective area of 10.2 cm2 and a 5% (w) Fe-loaded activated carbon fuel of 17 g, the stack reveals a peak power of 4.1
W at 800°C. The stack discharged at a constant current of 1.0 A for 19 h, giving a charge capacity of 19 A·h and an energy capacity of 31.6 W·h, which are much higher than those of a similar stack with anode on the inside and carbon loaded at the interior. The high capacity
of our DC-SOFC opens up potential applications in portable devices.
研究领域:
能源科学
·
材料科学
✓ 已验证
DOI
高影响因子
FUEL PROCESSING TECHNOLOGY
·
2021
·
IF 7.033
Tian Lan,Yiran Wang,Raza Ali,Hui Liu,Xiangyang Liu,Maogang He
Critical properties have great significance for the optimization of the combustion process of gasoline. Mixtures of n-heptane + isooctane are often used as primary reference fuels (PRF) to replace gasoline in scientific research. The critical temperatures ( T c ) and critical pressures ( p c ) of n-heptane + isooctane + n-propanol, n-heptane + isooctane + n-butanol and n-heptane + isooctane + ethyl propionate were measured by the flow method to study the effect of biofuels on the critical properties of traditional gasoline. The Redlich–Kister equations are used to correlate the measured data. The average absolute relative deviations for T c and p c are 0.10% and 0.31%, respectively. The experimental data is also used to evaluate the accuracy of the prediction model based on group contribution (GC) method previously proposed by our group.
研究领域:
化学工程
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能源科学
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
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2019
·
IF 7.467
Xiaojing Zhi,Tian Gan,Nianjun Hou,Lijun Fan,Tongtong Yao,Jun Wang,Yicheng Zhao,Yongdan Li
Ni 1-x Zn x O-Ce 0.8 Sm 0.2 O 1.9 is studied as an anode material for solid oxide fuel cells with hydrogen and methanol as fuels. After reduction, Zn is incorporated into the lattice of Ni when x is less than 0.5, while NiZn alloy accompanied with ZnO is formed when x reaches 0.8. The electrochemical oxidation process of H 2 on the anode is investigated with a symmetric cell under various H 2 partial pressures. The addition of Zn increases the electron cloud density of Ni and thus weakens the adsorbing strength of H on Ni, accelerating the surface diffusion of H species, which is the rate determining step when the content of Zn is lower than 0.5. ZnO in the reduced Ni 0·2 Zn 0·8 O- Ce 0.8 Sm 0.2 O 1.9 anode facilitates H spillover, resulting in the variation of the rate determining step and the highest activity of the anode. The cell with Ni 0·2 Zn 0·8 O- Ce 0.8 Sm 0.2 O 1.9 anode shows the highest performance with both H 2 and methanol fuels at 700 °C. ZnO also improves coking resistance of NiO-Ce 0.8 Sm 0.2 O 1.9 anode.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED ENERGY
·
2021
·
IF 9.746
Bangxin Li,John T.S. Irvine,Jiupai Ni,Chengsheng Ni
A solid oxide fuel cell utilizing bio-fuels such as methanol and ethanol could provide a carbon–neutral electricity generation and facilitate its applications in transport or stationary power unit. Herein, Ce 4+ doping in SrFe 0.95 Ni 0.05 O 3 imparts FeNi 3 exsolution and CeO 2 precipitation in a reducing condition, contributing to the fuel reforming, C-C bond cleavage and coke consumption in the anode chamber. The ferrite perovskites are stable in ethanol/steam at 800 °C, whereas they are unstable in ethanol vapor with the high C fugacity inducing the formation of Fe 0 and carbides. However, the Ce 0.2 Sr 0.8 Fe 0.95 Ni 0.05 O 3 anode maintains mostly the perovskite and is free from coke after the 300 h’ operation under C 2 H 5 OH fuel at 0.5 V or 0.7 V because of the dynamic balance between the carbon deposition and consumption since an operation for 10 h shows a clear carbon deposition. A maximum power density of 0.58 W cm −2 and a polarization resistance of 0.21 Ω cm 2 at 800 °C can be obtained for the symmetrical solid oxide fuel cell with identical Ce 0.2 Sr 0.8 Fe 0.95 Ni 0.05 O 3 cathode and anode under an ethanol fuel. The results demonstrate that the reversible and stable SrFeO 3 with Ce/Ni co-doping has a bright prospect for alcohol fuel oxidation.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2020
·
IF 4.939
Xianzhu Peng,Yunfeng Tian,Yun Liu,Wenjie Wang,Jing chen,Jin Li,Bo Chi,Jian Pu,Jian Li
Double perovskite Sr 2 MnMoO 5+δ (SMM) based hybrid catalyst is synthesized with SrMoO 4 (SM) nanoparticles' in-situ exsolution. And the super exchange model in double perovskite structure enable the excellent redox property of SMM based electrode. Electrolyte (Ce 0.8 Sm 0.2 O 1.9 , SDC)-supported symmetrical solid oxide fuel cell (SOFC) is prepared with the structure as SMM/NiO-SDC||SDC||NiO-SDC/SMM. The NiO-SDC powders are prepared from gel-casting combined co-synthetic method and SMM hybrid catalyst is loaded on NiO-SDC scaffold by solution infiltration. In-situ exsolved SM particles provide additional oxygen reduction reaction (ORR) active sites on electrode surface which also contributes to the cell's cathodic performance. The peak power densities of 245 and 183 mW/cm 2 can be achieved by as-prepared electrode when operating in wet CH 4 and C 2 H 5 OH fuels at 800 °C, respectively. And the cell runs stably for over 320 h with hydrocarbon fuel, which reveals SMM/NiO-SDC electrode's high electrochemical activity and promising carbon deposition resistance.
研究领域:
材料科学
·
电化学
·
能源材料
·
固体氧化物燃料电池
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催化化学
·
功能陶瓷
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2021
·
IF 5.816
Chao Sun,Liuzhen Bian,Wang Yu,Yunting Hou,Lijun Wang,Lei Xing,Chaoyi Wang,Jun Peng,Jihua Peng,Shengli An
La-doped Sr 2-x La x Fe 1.5 Mo 0.5 O 6-δ perovskite oxides are synthesized and used as a symmetric electrode to evaluate the effect of La on the crystal structure, conductivity, and catalytic activity for O 2 reduction and H 2 oxidation reaction. The electronic doping effect dominates the oversize effect in Sr 2-x La x Fe 1.5 Mo 0.5 O 6-δ oxide, resulting in unit cell volume expansion and decreased conductivity in air. In addition, the introduction of La increases the chemical structural stability of Sr 2 Fe 1.5 Mo 0.5 O 6-δ in reducing condition due to the higher La–O bond compared with Sr–O bond, leading to high catalytic activity for the H 2 oxidation reaction. At 800 °C, the R p values of Sr 1.9 La 0.1 Fe 1.5 Mo 0.5 O 6-δ symmetric cell in air and wet H 2 are as low as 0.075 and 0.21 Ω cm 2 , respectively. Moreover, the peak power densities of 769, 561, 439, and 653 mW cm −2 at 850 °C are obtained when wet H 2 , CO, CH 4, and C 3 H 8 are used as fuels on Sr 1.9 La 0.1 Fe 1.5 Mo 0.5 O 6-δ /LSGM/Sr 1.9 La 0.1 Fe 1.5 Mo 0.5 O 6-δ cell. The symmetric cell also shows excellent stability (>100 h) in wet H 2 /air, implying Sr 1.9 La 0.1 Fe 1.5 Mo 0.5 O 6-δ oxide is a promising symmetric electrode material .
研究领域:
材料科学
·
能源科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）