JOURNAL OF CHEMICAL AND ENGINEERING DATA
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2021
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IF 2.694
Qing Yi,Wei-Peng Chen,Xiang-yang Zhang,Yan-Yang Wu,Bin Wu,Kui Chen,Li-Jun Ji
The isobaric vapor–liquid equilibrium (VLE) data of 2-phenylethanol (2-PE) + 2-ethylphenol (2-EP), 1-phenyl-2-propanol (1,2-PP) + 2-ethylphenol (2-EP), 2-phenylethanol (2-PE) + 1-phenyl-2-propanol (1,2-PP) and 2-phenyl-1-propanol (2,1-PP) + 2-ethylphenol (2-EP) were measured by a modified Rose type still under 101.3 kPa. Both the Fredenslund test and Redlich–Kister area test were employed to verify the consistency of the experimental data. Besides, the experimental isobaric VLE data were correlated by Wilson, nonrandom two-liquid, and universal quasi-chemical models, and the corresponding parameters were obtained accordingly. All three models showed good agreement with the experimental data, and among which the Wilson model performed slightly better than the others.
研究领域:
化学工程
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物理化学
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DOI
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
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2023
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IF 5.2
Yanyang Wu,Jiabo Rao,Qing Yi,Zhihui Ma,Bin Wu,Kui Chen,Lijun Ji
Metal-organic frameworks (MOFs) with sensitive nanospace and selective binding sites are widely used to discriminate the subtle structural. Adsorption performances of 2-Phenylethanol, 1-Phenyl-2-propanol, and 2-Ethylphenol on MOFs were studied in this paper. Eight MOFs were prepared hydrothermally and NH 2 -UiO-66(1) was chosen as the subsequent adsorbent based on the larger selectivity for both 1-Phenyl-2-propanol/2-Phenylethanol and 2-Ethylphenol/2-Phenylethanol. Studies on adsorption kinetics showed that pseudo-first-order model was suitable for adsorption performances of 1-Phenyl-2-propanol on NH 2 -UiO-66(1), while pseudo-second-order model was suitable for both 2-Phenylethanol and 2-Ethylphenol. The adsorption isotherm revealed that Langmuir model was suitable for 1-Phenyl-2-propanol, 2-Ethylphenol, and 2-Phenylethanol. Thermodynamic parameters including Gibbs free energy, enthalpy, and entropy indicated that adsorption of 1-Phenyl-2-propanol on NH 2 -UiO-66(1) was a spontaneous and exothermic physisorption process, while those of 2-Ethylphenol and 2-Phenylethanol were spontaneous and endothermic physisorption processes. The adsorption process indicated that the separation of 2-Phenylethanol from 1-Phenyl-2-propanol and 2-Ethylphenol on NH 2 -UiO-66(1) was due to the Lewis acid-base interactions and sieving effect. NH 2 -UiO-66(1) was also treated the simulated enriched 2-Phenylethanol solutions and 99.5% 2-Phenylethanol was obtained. In conclusion, NH 2 -UiO-66(1) can be a feasible adsorbent to separate 2-Phenylethanol from 1-Phenyl-2-propanol and 2-Ethylphenol for industrial application.
研究领域:
化学工程
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材料科学
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物理化学
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产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
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2026
·Vol. 14
·期 5
·124698
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IF 7.5
Jing-jing Wu,Jia-yuan Tian,Feng Lin,Yu-long Ma,Yong-gang Sun,Pei Ma,Shuai-lei Li,Xue Zhang,Yi-shu Ma,Xiao-lin Xue
The efficient hydrodeoxygenation (HDO) of lignin oil to produce high-value-added cycloalkanes is a key route for biomass resource utilization. However, developing catalysts with both high catalytic activity and product selectivity remains a crucial challenge in this field. Herein, a strategy integrating crystalline-phase regulation and hydrogen spillover was proposed. Ru was doped into the ZIF-67 precursor via a one-pot method. After controlled calcination and hydrogen reduction, a nitrogen-doped carbon-coated Ru-Co bimetallic catalyst (RuCo@NC) was successfully prepared. Characterization results showed that the introduction of Ru induced the phase transformation of Co from face-centered cubic (FCC) to hexagonal close-packed (HCP) and precisely regulated the electron density distribution of catalytic active sites through Ru to Co electron transfer. H 2 -TPR/TPD confirmed that Ru, as a hydrogen spillover site, significantly enhanced low-temperature reducibility and hydrogen adsorption capacity. DFT calculations indicated that Ru sites dominated the efficient dissociation and activation of H₂ molecules, while Co sites were responsible for the selective adsorption of substrate molecules. The synergistic effect between the two metals greatly improved the HDO activity of the catalyst. The optimized 0.009RuCo@NC-400 catalyst achieved 100% conversion of lignin oil at 240 °C and 2 MPa H₂, with a cycloalkane selectivity of 73.7%. Moreover, the conversions of ten lignin derivatives were all above 97%. This study reveals a synergistic catalytic mechanism of the 0.009RuCo@NC-400 catalyst, integrating crystalline phase structure, electronic effects, and hydrogen spillover, providing theoretical guidance for the design of efficient HDO catalysts.
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
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IF 13.2
Zifan Wu,Lu Chen,Yacong Deng,Fengyu Tian,Guangzheng Sun,Yuting Qiu,Yichuan Li,Yuan Pan,Bin Liu,Bin Dong,Yongming Chai
Lignin-derived phenols, with their high energy density and rich aromatic structure, are potentially high-quality feedstocks for the production of aviation fuel-range cycloalkanes. Herein, we fabricated a Ni Mo alloy catalyst anchored on graphitic carbon nitride (g-C 3 N 4 ) coated γ-Al 2 O 3 (10Ni-5Mo/CN@γ-Al 2 O 3 ), which could completely hydrodeoxygenate various lignin-derived phenols into cycloalkanes under mild conditions. 10Ni-5Mo/CN@γ-Al 2 O 3 significantly catalyzed the hydrodeoxygenation of lignin oil at 240 °C under 3 MPa H 2 for 8 h, achieving a deoxygenation degree of 96.5 % and a high propylcyclohexane selectivity (41.8 %), and the resulting products met the requirements for aviation fuels. The study results showed that electron transfer within Ni Mo alloys and the strong interaction between g-C 3 N 4 and surface anchored Ni Mo alloys in 10Ni-5Mo/CN@γ-Al 2 O 3 facilitated the dissociation of H 2 into active hydrogen to hydrogenate the aromatic rings. Meanwhile, the formation of oxygen vacancies enhanced the adsorption and activation ability of the catalyst for oxygen-containing substrates, which was beneficial for the demethoxylation and dehydroxylation reactions. This work provides a new strategy for constructing supported non-noble metal catalysts for the hydrodeoxygenation of lignin oil into aviation fuels.
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DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Xia Zhang,Wenzhi Li,Yihang Jiang,Leyu Zhu,Liqun Wang
Efficient lignin depolymerization is crucial in the generation of valuable liquid fuels and mono-phenols for enhancing the utilization and sustainability of biomass resources. However, the complicated three-dimensional structure of lignin, the propensity for intermediate products to condense, and an overreliance on high-pressure hydrogen in depolymerization reactions pose major challenges. In this regard, we prepared a La and Ru modified Y zeolite (Ru 2 La 0.5 /HYo) and employed isopropanol (IPA) as an in situ hydrogen donor for the efficient conversion of lignin without requiring an external hydrogen source. Ru 2 La 0.5 /HYo selectively activates and decomposes IPA, constantly liberating H 2 for lignin degradation. The Ru-mediated synergy between the L-acid and hydrogenation active sites stabilizes the active intermediate and inhibits condensation, thereby balancing the depolymerization and condensation rates. La coordination with the alumina in the molecular sieve limits Al leaching, preventing zeolite deactivation during the reaction and enabling lignin depolymerization to proceed steadily. After four consecutive trials, no significant decline in activity is unobserved. After a 12 h reaction at 290°C, the oxygen content dropped from 29.69 % to 15.47 %, and the higher heating value (HHV) improved from 25.41 to 34.65 MJ/kg. Extending the period to 24 h resulted in a 93.80 % yield of liquid product and a 63.68 % yield of petroleum ether soluble (PES) product, allowing lignin to be upgraded for liquid fuels generation.
研究领域:
化学工程
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环境科学
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材料科学
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能源
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
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2024
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IF 8.3
Yang Zhou,Wei Liu,Shuangkun Zhang,Huan Liu,Zhanpeng Wu,Xiaodong Wang
Multiactuated shape memory materials are a class of promising intelligent materials that have received great interest in the fields of self-healing, anticounterfeiting, biomedical, soft robotic, and smart thermal management applications. To obtain a light/heat-dual-actuated shape memory material for thermal management applications in fire safety, we have designed a type of halogen-free flame-retardant phase-change composite film based on polyaryloxyphosphazene (PDAP)/phosphorene (PR) hybrid foam as a support material and paraffin wax (PW) as a phase-change material (PCM). PDAP was synthesized as a flexible foam matrix through the ring-opening polymerization of hexachlorocyclotriphosphazene, followed by a substitution reaction of aryloxy groups. The porosity of the PDAP foam is improved by introducing PR nanosheets, facilitating a high latent heat capacity of the PDAP–PR/PW composite films for thermal management applications. The PDAP–PR/PW composite films can implement rapid shape recovery within 65 s in the heating process, which is much shorter than that of the corresponding film without PR nanosheets (185 s). Furthermore, the PDAP–PR/PW composite films also exhibit light-actuated shape memory behavior thanks to their good solar-to-thermal energy absorption and conversion contributed by PR nanosheets as a highly effective photothermal material. More importantly, the presence of PR nanosheets imparts an excellent flame-retardant property to the PDAP–PR/PW composite films. The PDAP–PR/PW composite film can be self-extinguished within 2 s after the flame. Through an innovative integration of flexible polyphosphazene foam, PR nanosheets, and solid–liquid PCM to obtain a sensitive actuating response to light and heat, this study offers a new approach for developing multiactuated and eco-friendly flame-retardant shape memory materials to meet the requirement of applications with a requirement of fire safety in soft actuators, thermal therapy, control devices, and so on.
研究领域:
材料科学
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化学工程
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消防安全工程
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纳米技术
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热能管理
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产品关联
DOI
PubMed
高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
·
2022
·
IF 6.056
Xiaoqing Ye,Yan Liu,Changbo Peng,Xi Guan,Yi Liu,Zhenming Che,Hongbin Lin,Xu Min,Qi Zhu,Wenwu Ding
In this study, Pixian Douban (PXDB) was produced in a closed system of multi-scale temperature and flow fields constructed with the materials of pseudoplastic fluid in a gradient steady-state temperature field. The flavors and microorganisms of PXDB in the MTFF were compared with those in the traditional process with original materials (TPOM) and the traditional process with materials of pseudoplastic fluid (TPPF). The contents of organic acids, free amino acids and flavors in the MTFF were higher than those in the TPPF and TPOM. Chitinophagaceae_Unclassified and Bradyrhizobium_Unclassified were the predominant bacteria while Phyllachora sp . UB03986 and Rhizopus oryzae were identified as the core fungi at the species levels in the processes. The correlation analysis showed that 26 bacterial and 6 fungal were significantly correlated with the flavors. The results indicated that the closed system of MTFF could improve the product quality and was helpful to realize the controllable PXDB production.
研究领域:
食品科学
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微生物学
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发酵技术
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产品关联
DOI
高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
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2022
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IF 6.056
Yan Liu,Yimao Zhang,Yujiao Shi,Manna Zhang,Yi Liu,Zhenming Che,Hongbin Lin,Guangyuan Lv,Qi Zhu,Shirong Dong,Wenwu Ding
In this study, a material of pseudoplastic fluid was obtained by dealing with the original material of Pixian Douban (PXDB). The multi-scale temperature and flow fields (MTFF) were established, and a PXDB product fermented in the MTFF (PFM) was obtained. Meanwhile, the material of pseudoplastic fluid and the original material was also fermented into PXDB products named MPTF and OMP, respectively, following the traditional process. The contents of major physicochemical indexes, organic acids and free amino acids in the PFM were higher than those in the MPTF and OMP. A total of 112, 102, 105 volatile compounds were detected in the PFM, MPTF and OMP. The PFM was rich in esters and alcohols while MPTF was abundant in aldehydes. The PFM possessed higher soy sauce-like, umami, sour taste and sour smell by quantitative descriptive analysis (QDA). The PFM was positively correlated with many indexes by partial least squares discriminant analysis (PLS-DA), such as all physicochemical properties, Asp, Glu, C3 and A8. These results indicated that the flavor of PFM was richest, which showed that a PXDB product with higher quality could be obtained in MTFF.
研究领域:
食品科学
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化学工程
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农业工程
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）