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学者姓名：杨臣
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Abstract ：
Catalytic hydrotreatment is one of the promising routes for upgrading pyrolysis liquids (PLs) to intermediates that can be co-fed with vacuum gas oil for FCC refinery. Among all the factors, catalysts are always crucial in catalytic hydrotreatment of PLs as hydrogenation and repolymerization reactions occur in parallel. Therefore, catalysts with sufficient hydrogenation activity are generally required to enhance the hydrogenation reaction and to inhibit the repolymerization reaction of the thermally liable compounds in PLs. Among all noble metal catalysts tested, Ru/C catalysts showed a better performance than other catalysts in terms of the oil yield and deoxygenation level. However, a clear repolymerization was observed during catalytic hydrotreatment of PLs using Ru/C catalysts, especially during mild hydrotreatment, thus there is still ample room for their activity improvement. Here, a series of Ru-based catalysts supported on nitrogen-doped carbon materials (NC) and activated carbon (AC) were prepared. The catalytic performance was evaluated for hydrotreatment of PLs in a batch autoclave (250 degrees C, 8 MPa H2, 4 h for mild hydrotreatment; 340 degrees C, 6 MPa H2, 4 h for deep hydrotreatment). The Ru catalyst supported on nitrogen-doped carbon materials, obtained by the polyol reduction method with polyvinylpyrrolidone (PVP) as the protective agent (Ru/NC (PVP)), showed a better performance (in terms of product oil properties) than the other catalysts investigated in this work, due to a good distribution of the ruthenium nanoparticles. For mild hydrotreatment the H/C ratio, O/C ratio and MCRT value were 1.42, 0.37 and 9.9 wt%, respectively. For deep hydrotreatment the H/C ratio, O/C ratio and MCRT value were 1.26, 0.16 and 4.6 wt%. The comparison with results published earlier for other hydrotreatment catalysts is satisfactory but also shows room for further improvement. GC-MS and 1H NMR results showed that the contents of thermal liable components like aldehydes (16.7 %), ketones (24.3 %) and sugars (4.0 %) in PLs were quantitatively converted under mild hydrotreatment, while phenols and alkanes significantly increased from 35.9 %, 0 % to 49.1 %, 35.3 %, respectively, especially for deep hydrotreatment compared with PLs feed. The catalyst characterization revealed that Ru/NC (PVP) with the most uniform dispersion and the smallest average particle size (1.5 nm), rendered the best performance. These findings indicate that Ru/NC (PVP) catalyst is a promising candidate for the catalytic hydrotreatment of PLs.
Keyword ：
Biomass Biomass Catalytic hydrotreatment Catalytic hydrotreatment Fast pyrolysis Fast pyrolysis Pyrolysis liquids Pyrolysis liquids rials rials Ru supported on nitrogen -doped carbon mate Ru supported on nitrogen -doped carbon mate
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| GB/T 7714 | Xia, Yunhui , Xi, Nan , Yu, Xinyang et al. Catalytic hydrotreatment of fast pyrolysis liquids from Pine wood using Ru-based catalysts supported on nitrogen-doped carbon materials [J]. | FUEL , 2024 , 368 . |
| MLA | Xia, Yunhui et al. "Catalytic hydrotreatment of fast pyrolysis liquids from Pine wood using Ru-based catalysts supported on nitrogen-doped carbon materials" . | FUEL 368 (2024) . |
| APA | Xia, Yunhui , Xi, Nan , Yu, Xinyang , Luo, Maohua , Chen, Shi , Wang, Qinglian et al. Catalytic hydrotreatment of fast pyrolysis liquids from Pine wood using Ru-based catalysts supported on nitrogen-doped carbon materials . | FUEL , 2024 , 368 . |
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N-Methylpyrrolidone is widely used across various sectors; however, the energy-efficient removal of 1,4-butyrolactone impurity from NMP remains a significant challenge due to their nearly identical molecular size and properties. Herein, we synthesize a series of flexible molecular materials, perethylated pillar[n]arene (n = 5, 6) with enhanced crystallization efficiency under the induce of dichloromethane solvent. Through a size-specific recognition and varied host–guest interaction, EtP5 demonstrates exceptional 99 % selectivity for GBL against NMP; single-crystal structure analyses and theoretical calculations unveil intricate C-H···O hydrogen bonding interactions, and π-π stacking interactions between EtP5 and GBL. The single-crystal structure of the two-guest complexes has proved the existence of adsorption transition states, and it comprehensively elucidates the dynamic adsorption process of EtP5 with GBL, supported by theoretical calculations. Reuse experiments validate these crystals could be fully reused without loss of performance. © 2024 Elsevier B.V.
Keyword ：
1,4-Butyrolactone 1,4-Butyrolactone Adsorption mechanism Adsorption mechanism N-Methylpyrrolidone N-Methylpyrrolidone Perethylated pillar[5]arene Perethylated pillar[5]arene
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| GB/T 7714 | Yin, M. , Yang, C. , Tang, D. et al. Revealing the mechanism behind the highly selective separation of 1,4-butyrolactone from n-methylpyrrolidone using nonporous adaptive crystals of perethylated pillar[5]arene [J]. | Chemical Engineering Journal , 2024 , 495 . |
| MLA | Yin, M. et al. "Revealing the mechanism behind the highly selective separation of 1,4-butyrolactone from n-methylpyrrolidone using nonporous adaptive crystals of perethylated pillar[5]arene" . | Chemical Engineering Journal 495 (2024) . |
| APA | Yin, M. , Yang, C. , Tang, D. , Huang, S. , Lou, X. , Cui, R. et al. Revealing the mechanism behind the highly selective separation of 1,4-butyrolactone from n-methylpyrrolidone using nonporous adaptive crystals of perethylated pillar[5]arene . | Chemical Engineering Journal , 2024 , 495 . |
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Catalytic distillation is an effective and important technology for low-temperature dehydrogenation of perhydrobenzyltoluene (H12-BT). However, current researches have unfortunately failed to comprehensively understand the reaction and separation processes, hindering the broader application of catalytic distillation dehydrogenation technology. Therefore, in the study, a comprehensive dehydrogenation reaction kinetic model that accounts for the influence of the intermediate H6-BT was established firstly. Subsequently, the vapor-liquid equilibrium data for the binary systems H12-BT + H6-BT and H6-BT + H0-BT was estimated by utilizing the UNIFAC model, so as to obtain the azeotropes. By developing a modified catalytic distillation model, the catalytic distillation dehydrogenation process was examined. Our exploration revealed the existence of an optimal degree of dehydrogenation value, namely 0.8, within the catalytic distillation dehydrogenation process, yielding an approximate 23.8 % reduction in unit H2 production cost in comparison to the fully dehydrogenation case. Our findings contribute valuable insights that have the potential to promote the overall development of the hydrogen energy economy.
Keyword ：
Catalytic distillation Catalytic distillation Degree of dehydrogenation Degree of dehydrogenation Dehydrogenation process Dehydrogenation process Perhydro-benzyltoluene Perhydro-benzyltoluene Reaction kinetic Reaction kinetic
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| GB/T 7714 | Wang, Qinglian , Le, Keyu , Lin, Yi et al. Investigation on catalytic distillation dehydrogenation of perhydro-benzyltoluene: Reaction kinetics, modeling and process analysis [J]. | CHEMICAL ENGINEERING JOURNAL , 2024 , 482 . |
| MLA | Wang, Qinglian et al. "Investigation on catalytic distillation dehydrogenation of perhydro-benzyltoluene: Reaction kinetics, modeling and process analysis" . | CHEMICAL ENGINEERING JOURNAL 482 (2024) . |
| APA | Wang, Qinglian , Le, Keyu , Lin, Yi , Yin, Wang , Lin, Yixiong , Alekseeva, Maria, V et al. Investigation on catalytic distillation dehydrogenation of perhydro-benzyltoluene: Reaction kinetics, modeling and process analysis . | CHEMICAL ENGINEERING JOURNAL , 2024 , 482 . |
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With the increasing demand of cyclohexanol in nylon industry, it is significant to develop a safe, green and economical process to produce cyclohexanol. For this purpose, a novel reactive distillation process through cyclohexyl acetate transesterification with methanol was proposed in this work. The NKC-9 catalyst was preferred to establish the reaction kinetic model based on pseudo-homogeneous model. Seven reactive distillation experiments with pilot-scale for cyclohexanol synthesis were explored to prove feasibility of reactive distillation processes and accuracy of model by comparing simulated results, which ensured the establishment of the process simulation. Furthermore, three reactive distillation processes of cyclohexanol production were designed and optimized by the sequential iterative algorithm based on minimum total annual cost. After optimization of pressure and recycled stream flow, a novel double column of reactive and pressure-swing hybrid distillation process showed the minimized total annual cost per ton product, which was 170.90 $/kg. Finally, total annual cost of transesterification, hydrolysis and hydrogenation processes were compared, and transesterification process demonstrated economic advantage. This work would provide a guidance for cyclohexanol green production by reactive distillation through cyclohexyl acetate transesterification, while a whole, economical and atomic economical reactive distillation process of cyclohexanol production could be established in the future.
Keyword ：
Cyclohexanol Cyclohexanol Process intensification Process intensification Reaction kinetics Reaction kinetics Reactive distillation Reactive distillation Transesterification Transesterification
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| GB/T 7714 | Hou, Zhengkun , Geng, Xueli , Ding, Qiuyan et al. A green synthesis route of cyclohexanol via transesterification reaction intensified by reactive distillation technology [J]. | JOURNAL OF CLEANER PRODUCTION , 2024 , 442 . |
| MLA | Hou, Zhengkun et al. "A green synthesis route of cyclohexanol via transesterification reaction intensified by reactive distillation technology" . | JOURNAL OF CLEANER PRODUCTION 442 (2024) . |
| APA | Hou, Zhengkun , Geng, Xueli , Ding, Qiuyan , Li, Hong , Guo, Yaocong , Qiu, Ting et al. A green synthesis route of cyclohexanol via transesterification reaction intensified by reactive distillation technology . | JOURNAL OF CLEANER PRODUCTION , 2024 , 442 . |
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根据学情分析，确立了“实例引导创新”的思路，对理工科课程设计贯通低、中、高阶认知的教学方案，并利用实际工程案例引导同学们进行创新。引进系统性教学资源和碎片式知识点引发学生学习兴趣，结合工程案例和实验技术培养学生动手能力，例如蒸馏操作中的反应精馏实例，培养学生责任心与专业信念，使用创新思维范式引导学生进行自组织学习、主动构建案例，而学生的创新成果又纳入课程内容，促进教学迭代优化。
Keyword ：
创新思维 创新思维 实例引导 实例引导 教学迭代 教学迭代
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| GB/T 7714 | 葛雪惠 , 尤新强 , 李玲 et al. 基于实例引导创新的《化工原理》教学改革与实践 [J]. | 当代化工研究 , 2024 , 3 (05) : 158-160 . |
| MLA | 葛雪惠 et al. "基于实例引导创新的《化工原理》教学改革与实践" . | 当代化工研究 3 . 05 (2024) : 158-160 . |
| APA | 葛雪惠 , 尤新强 , 李玲 , 叶长燊 , 杨臣 . 基于实例引导创新的《化工原理》教学改革与实践 . | 当代化工研究 , 2024 , 3 (05) , 158-160 . |
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Compressing metal foam flow field usually causes a higher pressure drop and uncontrollable pore structure while enhancing the water discharge capability of proton exchange membrane fuel cell (PEMFC). To further enhance the water discharge capability of metal foam flow field at a low cost of pressure drop, a novel metal foam flow field exhibiting hierarchical pore structure(dcoarse/dfine=2; Vcoarse/Vfine=1; dfine=0.5 mm) is first introduced. This work numerically investigates water management characteristics and output performance of novel metal foam flow field. Subsequently, 3D printing technology is employed to precisely manufacture metal foam flow fields, which are compared with several flow fields in the cathode side experimentally. Experimental results demonstrate that at 1.5 A/cm2 during 3 h, the amount of water discharge in metal foam flow field with hierarchical pore structure is close to parallel flow field, which is 1.12 times and 1.30 times that in metal foam flow field with uniform coarse pore and uniform fine pore, respectively. Moreover, compared with the previous optimized strategy, namely metal foam flow field with 75 PPI and a compression rate of 0.75, metal foam flow field with hierarchical pore structure can not only improve the maximum net power density by 9.5 % and water discharge amount by 14.1 %, but also decrease two-thirds of the pressure drop in the cathode side. This research lays the theoretical groundwork and offers technical insight for the implementation of metal foam flow fields in PEMFCs. © 2024 Elsevier B.V.
Keyword ：
3D printing 3D printing Cathodes Cathodes Drops Drops Flow fields Flow fields Metal foams Metal foams Parallel flow Parallel flow Pore structure Pore structure Pressure drop Pressure drop Proton exchange membrane fuel cells (PEMFC) Proton exchange membrane fuel cells (PEMFC) Water management Water management
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| GB/T 7714 | Sun, Yun , Lin, Yixiong , Wan, Zhongmin et al. Water management and performance enhancement in proton exchange membrane fuel cell through metal foam flow field with hierarchical pore structure [J]. | Chemical Engineering Journal , 2024 , 494 . |
| MLA | Sun, Yun et al. "Water management and performance enhancement in proton exchange membrane fuel cell through metal foam flow field with hierarchical pore structure" . | Chemical Engineering Journal 494 (2024) . |
| APA | Sun, Yun , Lin, Yixiong , Wan, Zhongmin , Wang, Qinglian , Yang, Chen , Yin, Wang et al. Water management and performance enhancement in proton exchange membrane fuel cell through metal foam flow field with hierarchical pore structure . | Chemical Engineering Journal , 2024 , 494 . |
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Furfuryl alcohol (FOL) is commercially available by selective hydrogenation of furfural (FAL). A variety of catalysts have been developed for such purpose, among which Cu-based catalysts show superior catalytic performance. However, copper nanoparticles with complex valence states are easy to agglomerate during hydrogenation reaction, which might have a negative influence on the catalytic performance. The carbon coating is an efficient strategy to prevent the sintering of Cu-based catalysts. Herein, a strategy based on the thermal decomposition of Cu-EDTA complex was designed to prepare carbon encapsulated Cu-based catalysts. The prepared catalysts were applied in the selective hydrogenation of FAL to FOL in the batch reactor. The results showed that a nearly quantitative conversion of FAL with a selectivity of 98.7 % towards FOL was achieved using CuOx@NC-150 (molar ratio of Cu: Na4EDTA·4H2O=2:1; obtained by oxidative activation at 150 °C) under 140 °C, 3 MPa in 4 h. The performance was comparable to that of the commercial CuCr2O4 catalyst under the identical conditions. In addition, the developed carbon encapsulated Cu-based catalysts exhibited a slightly better stability than CuCr2O4 catalyst in terms of FOL yield in five consecutive cycles. XPS and XAES characterizations implied that the presence of a suitable surface ratio of Cu+/(Cu++Cu0) of the prepared catalyst may contribute to the selective hydrogenation of FAL to FOL. © 2024 Elsevier B.V.
Keyword ：
Aldehydes Aldehydes Batch reactors Batch reactors Carbon Carbon Catalyst selectivity Catalyst selectivity Chromium compounds Chromium compounds Coatings Coatings Copper compounds Copper compounds Decomposition Decomposition Furfural Furfural Hydrogenation Hydrogenation Molar ratio Molar ratio Sintering Sintering
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| GB/T 7714 | Xi, Nan , Chen, Shiting , Bao, Ruixi et al. Layered carbon encapsulated CuOx nanopaticles for selective hydrogenation of furfural to furfuryl alcohol [J]. | Molecular Catalysis , 2024 , 565 . |
| MLA | Xi, Nan et al. "Layered carbon encapsulated CuOx nanopaticles for selective hydrogenation of furfural to furfuryl alcohol" . | Molecular Catalysis 565 (2024) . |
| APA | Xi, Nan , Chen, Shiting , Bao, Ruixi , Wang, Qinglian , Lin, Yixiong , Yue, Jun et al. Layered carbon encapsulated CuOx nanopaticles for selective hydrogenation of furfural to furfuryl alcohol . | Molecular Catalysis , 2024 , 565 . |
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The balance between water discharge and mass transfer within metal foam flow field is vital for elevating the performance of proton exchange membrane fuel cell (PEMFC). To obtain an improved balance, this work designs a novel bilayer structure with two types of PPI (pore per inch) for metal foam flow field. Experimental and numerical results confirmed that arranging a metal foam featuring a smaller PPI in the layer 1 near the membrane electrode assembly (MEA) and a larger PPI in the layer 2 away from the MEA is beneficial to enhance the output performance. The excellent PPI combination for balancing mass transfer and water discharge involves utilizing a 50 PPI metal foam for the layer 1 and 110 PPI metal foam for the layer 2. Compared to conventional metal foam with 50 PPI, metal foam flow field with excellent PPI combination showcases a 11.2 % increase in water discharge and a 13.2 % boost in mass transfer, leading to a notable 23.5 % performance enhancement. Similarly, compared to conventional metal foam with 110 PPI, there is a 7.3 % decrease in mass transfer but a significant 29.5 % increases in water discharge, leading to a 15.2 % performance improvement. © 2024 Elsevier Ltd
Keyword ：
Bilayer structure Bilayer structure Mass transfer Mass transfer Metal foam flow field Metal foam flow field PEMFC PEMFC Water discharge Water discharge
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| GB/T 7714 | Sun, Y. , Lin, Y. , Wang, Q. et al. Design and optimization of bilayer structure in metal foam flow field for proton exchange membrane fuel cell [J]. | Applied Thermal Engineering , 2024 , 257 . |
| MLA | Sun, Y. et al. "Design and optimization of bilayer structure in metal foam flow field for proton exchange membrane fuel cell" . | Applied Thermal Engineering 257 (2024) . |
| APA | Sun, Y. , Lin, Y. , Wang, Q. , Yin, W. , Liu, B. , Yang, C. et al. Design and optimization of bilayer structure in metal foam flow field for proton exchange membrane fuel cell . | Applied Thermal Engineering , 2024 , 257 . |
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材料与化工领域的人才培养对当前社会发展具有重要的作用.结合国家工程专业学位类别调整的背景,紧扣材料工程与化学工程学科交叉点,调整专业学位硕士培养方案,全力提高材料与化工专业学位研究生创新实践能力,是新时期材料与化工专业学位研究生人才培养的发展方向.作者提出基于"企业专班"的材料与化工专业学位研究生培养模式,通过选拔生源、精选合作企业、开设企业专班,培养实践型、应用型高层次人才.从学生就业数据和学生反馈来看,取得了一定成效,具有较好的推广价值和实用意义.
Keyword ：
专业学位 专业学位 企业专班 企业专班 材料与化工 材料与化工 研究生培养 研究生培养
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| GB/T 7714 | 葛雪惠 , 肖龙强 , 杨臣 et al. 基于"企业专班"的材料与化工专业学位研究生培养模式研究 [J]. | 化工时刊 , 2024 , 38 (5) : 65-67 . |
| MLA | 葛雪惠 et al. "基于"企业专班"的材料与化工专业学位研究生培养模式研究" . | 化工时刊 38 . 5 (2024) : 65-67 . |
| APA | 葛雪惠 , 肖龙强 , 杨臣 , 侯琳熙 . 基于"企业专班"的材料与化工专业学位研究生培养模式研究 . | 化工时刊 , 2024 , 38 (5) , 65-67 . |
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| GB/T 7714 | Xu, Hui-Jin , Yang, Chen , Yang, Liu et al. PREFACE: PHASE CHANGE, INTERPHASE COUPLING, AND MULTIPHASE TRANSPORT IN POROUS STRUCTURES (PART II) [J]. | JOURNAL OF POROUS MEDIA , 2023 , 26 (4) : V-VII . |
| MLA | Xu, Hui-Jin et al. "PREFACE: PHASE CHANGE, INTERPHASE COUPLING, AND MULTIPHASE TRANSPORT IN POROUS STRUCTURES (PART II)" . | JOURNAL OF POROUS MEDIA 26 . 4 (2023) : V-VII . |
| APA | Xu, Hui-Jin , Yang, Chen , Yang, Liu , Yang, Ren-Feng . PREFACE: PHASE CHANGE, INTERPHASE COUPLING, AND MULTIPHASE TRANSPORT IN POROUS STRUCTURES (PART II) . | JOURNAL OF POROUS MEDIA , 2023 , 26 (4) , V-VII . |
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