FUEL
·
2022
·
IF 8.035
Jingjing He,Hao Chen,Yisong Chen,Xin Su,Peng Zhang,Hongming Xu,Chenglong Zhou
Among the biofuels produced from lignocelluloses, cyclopentanol is a promising candidate. In this study, a constant volume chamber (CVC) is employed to investigate the effects of adding cyclopentanol in diesel with different proportions (0%, 10%, and 20% in volume) on the spray and combustion characteristics. Tests are performed under three injection pressures (100, 120 and 140 MPa). The experimental results in the CVC show that the atomization characteristics of cyclopentanol-diesel blends are better in the early stage of spray and slightly worse in the later stage than those of diesel. As the injection pressure increases, the diesel cyclopentanol blend fuels improve the air fuel mixing. The addition of cyclopentanol has risen the temperature of the flames and cut the soot formation of diesel by 12.7–89.2% under all injection pressure conditions. The addition of cyclopentanol is found to reduce the natural flame luminosity and combustion duration significantly due to the effective combustion process acceleration and is helpful for improving the combustion, especially for CP10. Overall, blending cyclopentanol into diesel has a great soot reduction potential with a low cetane number and improved mixing, and CP10 can be seen as a future alternative fuel, especially under an injection pressure of 140 MPa.
研究领域:
能源科学
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燃烧学
✓ 已验证
产品关联
DOI
高影响因子
RENEWABLE ENERGY
·
2020
·
IF 6.274
Hao Chen,Xin Su,Jingjing He,Peng Zhang,Hongming Xu,Chenglong Zhou
Cyclopentanol is a promising alternative biofuel for automobiles. In this study, an optical engine was employed to investigate the effects of cyclopentanol blending ratios on combustion characteristics. Cyclopentanol was blended with diesel by 10% and 20% volume, denoted as CP10 and CP20, respectively. Comparison tests between blends and diesel (denoted as D100) were performed under three injection pressures (100, 120, and 140 MPa) and four injection timings (−6°, −9°, −12° and −15° crank angle after top dead center (°CA ATDC)). The experimental results indicated that the addition of cyclopentanol prolongs the ignition delay , shortens the combustion duration and improves the indicated thermal efficiency . As the injection pressure increases or the injection timing advances, the peak combustion pressures (PCPs) and peak heat release rates (PHRRs) increase. Compared to D100, the PCPs and PHRRs of cyclopentanol/diesel fuel blends are lower and decrease with the increase of cyclopentanol ratio. Blending cyclopentanol in diesel is effective in reducing soot emission, and the reduction effect weakens as the injection pressure increases or the injection timing advances. CP10 is superior to CP20 according to the comprehensive evaluation of combustion and emission, especially at the injection timing of −12°CA ATDC under the injection pressure of 140 MPa.
研究领域:
能源科学
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燃烧学
✓ 已验证
产品关联
DOI
高影响因子
CHINESE CHEMICAL LETTERS
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2017
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IF 1.932
Yan-Fu Ma,Hao Wang,Guang-Yue Xu,Xiao-Hao Liu,Ying Zhang,Yao Fu
A series of cobalt catalysts with different supports were prepared for the selective conversion of biomass-derived furfural to cyclopentanol (CPL) in one step. The best CPL yield was 82 mol% at 160 °C, 2 MPa H 2 , 4 h when cobalt was supported on ZrO 2 -La 2 O 3 . The supports were characterized by X-ray diffraction (XRD) and temperature-programmed desorption of ammonia (NH 3 -TPD). The XRD results indicated that the more stable t-ZrO 2 formed by doping La 2 O 3 . The amount of acid sites of the catalyst increased, too. The influences of parameters such as reaction temperature, hydrogen pressure, and reaction time on the catalytic activity were also investigated. The polymer formed during the reaction may cause the deactivation of the Co/ZrO 2 -La 2 O 3 catalyst. This work provides a possibility to prepare the stable t-ZrO 2 and apply with cobalt metal for biomass valorization.
研究领域:
化学工程
·
生物质能
✓ 已验证
产品关联
DOI
高影响因子
Materials Advances
·
2022
·Vol. 3
·期 9
·3885-3896
·
IF 0
Xing-Long Li,Rui Zhu
Developing an economic catalyst to upgrade furfural to cyclopentanol is highly significant for fine chemical synthesis and biomass utilization. In this manuscript, an efficient and economical multi-functional porous Co-400 catalyst was developed. This catalyst obtained porosity, magnetism, Lewis acidity and hydrogenation activity via simple reduction of purchased Co3O4. Various factors were investigated in detail, and 87% yield of CPL could be obtained when Co-400 was used as the catalyst. The active sites of the catalyst were identified according to XRD, IR, XPS, SEM and Raman analysis. Moreover, the keys to the high activity and chemoselectivity of the Co-400 catalyst were mainly attributed to highly dispersed Co0 species and amorphous porous Co3O4 species, which were precisely controlled by the reduction temperature. The catalyst can be easily separated by magnetism. Furthermore, a possible reaction mechanism was proposed based on a series of controlled experiments and catalyst characterizations.
研究领域:
化学工程
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生物质利用
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催化科学
✓ 已验证
产品关联
DOI
JOURNAL OF CHEMICAL AND ENGINEERING DATA
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2019
·
IF 2.298
Lu Zhao,Dengfeng Ye,Yongsheng Guo,Wenjun Fang
Oxygenated additives have been proved to improve the property of an aviation fuel, such as reducing pernicious emissions and adjusting physical properties, and an appropriate alcohol is usually a typical candidate. To understand the properties of high-energy-density hydrocarbon fuels with alcohol, densities (ρ) and viscosities (η) of ternary system, cyclopentanol + exo-tetrahydrodicyclopentadiene (JP-10) + 1,3-dimethyladamantane (1,3-DMA), and their corresponding binary systems, have been determined over the whole composition range at different temperatures, T = (293.15–333.15) K, and atmospheric pressure, p = 0.1 MPa. The excess molar volumes (VmE) and the viscosity deviations (Δη) of the binary systems mixtures were calculated and fitted to the Redlich–Kister equation, while those of the ternary systems were calculated and fitted to four different semiempirical equations. The results show that the addition of cyclopentanol can lead to a little higher density and a lower viscosity, which are beneficial to the design and performance of hydrocarbon fuels.
研究领域:
化学工程
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燃料科学
✓ 已验证
产品关联
DOI
高影响因子
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
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可再生能源
✓ 已验证
产品关联
DOI
高影响因子
ChemCatChem
·
2024
·
IF 3.8
Libin Liu,Yuxi Si,Wenjie Zhao,Qingqin Zhu,Zhaoran Yang,Jing He,Yangqiang Huang,Youwei Cheng
Cyclopentanone (CPO) and cyclopentanol (CPL), derived from renewable biomass resource hemicellulose, are considered sustainable chemicals that can substitute fossil-based products, which could be obtained through the hydrogenation-rearrangement reaction of furfural (FFA). However, the inevitable condensation reactions of FFA and furfuryl alcohol (FA) in aqueous solutions generate humins and result in carbon loss, limiting the industrial application of this process. Herein, a series of Cu-based catalysts were synthesized using the reverse co-precipitation method with various metal promoters and applied in the FFA hydrogenation-rearrangement reaction. The highest yield of 97.1% CPO/CPL achieved in a typical reaction condition at 200 °C, 4 MPa, in 20 wt% isopropanol-water mixed solvent over CuZnZr catalyst and the recyclability test confirmed that the catalyst had excellent stability. Experimental studies and characterizations showed that the enhanced performance could be attributed to the adequate Lewis acid sites, regulated through the synergistic interaction between Cu, Zn, and Zr compounds. The simultaneous introduction of Zn and Zr promotes the Cu reduction, and results in more dispersed Cu0 and Cu+, providing an ample and reliable active site. This study outlines a viable method for the catalyst designing and valorizing biomass into high-value-added products.
研究领域:
催化化学
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可再生资源化学
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2021
·
IF 2.495
Haihong Xia,Jing Li,Changzhou Chen,Dichao Wu,Jurong Ren,Jianchun Jiang,Minghao Zhou
Metal-organic frameworks (MOFs) as an emerging class of porous materials exhibit some unique advantages, including controllable composition, a large surface area, high porosity, and so on. In this work, the spherical NiMo bimetal catalysts supported on porous carbon matrix were prepared using a simple wet impregnation method and studied for selective hydrogenation of furfural (FFA). Three different catalysts were investigated including Ni/C-Mo-BTC, Ni/C-Mo-DHTA and Ni/C-Mo-PTA. Of the catalysts studied the Ni/C-Mo-BTC catalyst could achieve the highest selectivity of CPL (up to 90%) under moderate reaction conditions (140 °C, 2 MPa, 2 h) in aqueous medium. In addition, other Ni-based catalysts (Ni/C-Fe, Ni/C-Zn, Ni/C-Cu, Ni/C-Ce) were also investigated to achieve yields of 20–70% under the same reaction conditions. The influence of temperature, H 2 pressure, time and solvent were investigated for the best performing catalyst. Based on the optimal reaction condition, various of furfural derivatives could also be effectively transferred to produce corresponding products. The detailed physicochemical characterization was carried out by means of XRD, SEM, TEM, XPS, NH 3 -TPD and Raman analysis. In the end, the optimal Ni/C-Mo0.4 catalyst could be recycled magnetically and efficiently applied in the next run for five consecutive recycling tests in the FFA hydrogenation to CPL. The results suggested Ni/C-Mo0.4 catalyst occurred to increasingly favor the formation of Ni-Mo alloys and suggested a metallic active site in FFA hydrogenation with the addition of element Mo. Mechanism study indicated that water was a key factor contributing to the formation of different desired products, which was responsible for the arrangement of furan compound.
研究领域:
化学工程
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催化材料科学
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL TECHNOLOGY
·
2023
·
IF 2.8
Haihong Xia,Jing Li,Jun Zhao,Minghao Zhou,Jianchun Jiang
Cyclopentanol (CPL) was an eco-friendly solvent as well as important platform chemical which could be generated from biomass-derived furfural (FFA). In this paper, a series of Ni, Cu, Mo, Co bimetallic catalysts with different metals loadings supported on carbon nanotubes (CNT) were synthesized by an impregnation method for aqueous-phase hydrogenation of FFA to obtain CPL. Various effects of reaction parameters such as reaction solvent, reaction temperature, reaction time and different loading amounts of Ni over bimetallic Ni-based CNT catalysts were fully investigated. Among the catalysts studied, (15 + 5) wt% NiCu/CNT catalysts showed a high conversion of FFA and 88% selectivity towards CPL in water and 96% selectivity towards acetal in methanol at the mild condition of 160℃, 2 MPa hydrogen and 4 h reaction time. NiCu bimetallic synergistic effect was interpreted through H2-TPR and NH3-TPD measurement and a possible pathway was proposed. The features of the CNT-supported catalysts were investigated via XRD, XPS, TEM, H2-TPR and NH3-TPD. The Ni and bimetallic NiCu catalysts synthesized in this work were inexpensive and simple, which made them a promising candidate for the conversion of biomass-derived FFA to CPL.
研究领域:
化学工程
·
催化材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Sustainable Energy & Fuels
·
2020
·Vol. 4
·期 11
·5709-5720
·
IF 5.503
Haihong Xia,Changzhou Chen,Peng Liu,Minghao Zhou,Jianchun Jiang
Transformation of furfural (FFA), a typical representative of furan platform chemicals derived from the acid hydrolysis of hemicellulose to the high value chemicals tetrahydrofurfuryl alcohol (THFOL) and cyclopentanol (CPL), has drawn great attention. In this study, we report an efficient NiCo bimetallic catalyst with highly dispersed NiCo-based metals on a porous carbon matrix for FFA hydrogenation. For different FFA conversion reactions of the bimetallic catalysts, the tetrahydrofurfuryl (THFOL) yield was up to 95% over the Ni3Co1@C catalyst at 80 °C. Furthermore, cyclopentanol (CPL) could also be obtained with a yield of 95% with Ni1Co1@C as the catalyst at 160 °C in an aqueous medium. The detailed physicochemical characterization was carried out by means of XRD, SEM, BET, ICP, XPS, NH3-TPD and Raman analysis. With the addition of Co in the bimetallic catalysts, the average particle size decreased obviously to around 5.7 nm in NixCoy/C catalysts with different Ni/Co ratios, which increased the dispersion and improved the catalytic activity of FFA hydrogenation. The NixCoy@C catalysts could be recovered and efficiently applied in the next run for four consecutive recycling tests in FFA hydrogenation to the corresponding target products under different reaction conditions. The results suggested that the NixCoy@C catalyst appeared to increasingly favor the formation of Ni–Co alloys and suggested a metallic active site in FFA hydrogenation with the addition of the Co element. Mechanistic study indicated that temperature was a key factor contributing to the formation of different desired products (THFOL and CPL). Furthermore, water was another essential factor, which was responsible for the arrangement of the furan compound.
研究领域:
化学工程
·
催化材料科学
✓ 已验证
DOI
高影响因子
RSC Advances
·
2022
·Vol. 12
·期 19
·11843-11852
·
IF 4.036
Qi Guo,Xinglong Hou,Wei Xu,Junli Liu
Ni3Co1/ELAC catalyst, prepared by the enzymatically hydrolyzed lignin activated carbon as a carrier and a 3 : 1 ratio content of nickel and cobalt, can selectively convert furfural to cyclopentanol (CPL) in aqueous solution. We used activated carbon prepared by the phosphoric acid method as the carrier, and investigated the effect of the carrier on the catalyst activity. The ratio of bimetal (Ni, Co) content and reaction conditions (reaction temperature, reaction time, initial H2 pressure) have also been investigated in the furfural hydrogenation. With the optimal Ni3Co1/ELAC catalyst, the conversion rate of furfural and the selectivity of CPL were 100% and 94.1%, respectively. In this process, some important catalysts were studied by XRD, XPS, ICP-AES, BET and TEM characterization. Through experimental results and other people's research, we deduced a reasonable reaction path and verified it by replacing the reaction substrate and solvents. Finally, the experiment proved that the formation of CPL by furfural required the occurrence of a rearrangement reaction and the participation of aqueous solution.
研究领域:
化学工程
·
催化材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2024
·
IF 7.1
Honghui Gong,Fei Wang,Qi Li,Longxing Wei,Juan Zhang,Yuan Ma,Yifan Rui,Xian-Lei Shi
Selective synthesis of cyclopentanol (CPL) from biomass-derived furfural (FAL) is highly attractive, but it still faces serious challenges. In this work, an alloyed Cu–Co catalyst derived from Cu–Co–Al layered double hydroxide (LDH) was grafted onto sulfur-doped coffee biochar for the first time (Cu–Co–Al/SCB). Cu–Co–Al/SCB achieved a maximum CPL yield of 97.5% and a high turnover frequency (TOF) of 15.6 h–1 in the selective hydrogenative rearrangement of FAL at 140 °C. The characterization results demonstrated that grafting Cu–Co–Al onto SCB results in the formation of Cu–Co alloys and a strong interaction between them. Further characterization and activity tests demonstrated that the formation of a highly dispersed Cu–Co alloy and in situ generated Brønsted acid sites collaboratively catalyzes the selective hydrogenative rearrangement of FAL to CPL over Cu–Co–Al/SCB, and the strong interaction between the Cu–Co alloy and sulfur-doped coffee biochar endowed Cu–Co–Al/SCB with remarkable stability. As a result, Cu–Co–Al/SCB is a promising catalyst for the selective hydrogenative rearrangement of FAL.
研究领域:
催化化学
·
生物质能
·
材料科学
✓ 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）