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Journal of Energy Chemistry 2023年第4期79卷 22-30页

作者： Xinghua Zhang Miaojia Song Jianguo Liu Qi Zhang lungang chen Longlong Ma Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education School of Energy and EnvironmentSoutheast UniversityNanjing 210096JiangsuChina

In this work,a“cyclopentanone-vanillin”strategy was proposed for the preparation of jet fuel range cycloalkanes from lignocellulose-derived ketones and lignin-derived aldehydes via aldol condensation and hydrodeoxygenation(HDO).Ethanolamine lactate ionic liquid(LAIL)exhibited excellent catalytic activity in the aldol condensation of cyclopentanone and vanillin.Desired mono-condensation and bicondensation products were obtained with yield of 95.2%at 100℃.It is found that the synergy effects between amino group of ethanolamine and hydroxyl group of lactic acid play a key role in the aldol condensation.The condensation products were converted into cycloalkanes by HDO over 5%Pd/Nb_(2)O_(5)catalyst.The density of the obtained HDO products is 0.89 g/cm^(3)and the freezing point is lower than-60℃.These results suggest that the resulted cycloalkanes can be used as additives to improve the density and low-temperature fluidity of the jet fuels.

关键词： Aldol condensation Cyclopentanone-vanillin Ionic liquid catalysts Hydrodeoxygenation Jet fuel

Numerical research on biomass wastewater treatment using doublepartition vessel with off-centered impellers

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International Journal of Agricultural and Biological Engineering 2023年第2期16卷 232-240页

作者： Wei Zhang Yijie Yang Wenmin Qian Longlong Ma lungang chen Na Liu Ying Liu Yubao chen School of Energy and Environmental Science Yunnan Normal UniversityKunming 6500500China Yunnan Research Academy of Eco-environmental Sciences Kunming 650034China School of Energy and Environment Southeast UniversityNanjing 210096China

Limited by single function,it is difficult for the traditional stirred vessels to meet the requirements of mixing system in biomass wastewater treatment processes.The estimation of biomass wastewater stirring reactor performance by computational fluid dynamics(CFD)during multiphase reactions is important,due to the uncertainty in the numerical results.In this study,a novel double-partition stirred vessel with eccentrically located impellers was developed for the special subject.In addition,many simulations were carried out with the wastewater from biomass ethanol production as the medium to ensure the high reactor performance.The fluid flow was simulated and analyzed using the turbulent RNG k-ε model and multi reference frames.A good agreement is found between the simulation results and the confirmatory experiment.Moreover,the weir crest and interconnected pore were specially designed for the establishment of the circulation of fluid to maintain different technological conditions in the two regions.The distributions of radial velocities and tangential velocities were concentrated near the stirring blade.From the velocity profile,it is deduced that the flow pattern in the stirred vessel is insensitive to Reynolds number.Finally,this simulation study could contribute to the improvement and optimization of the structure,as well as the operation of the novel stirred vessel.

关键词： biomass wastewater treatment double-partition vessel computational fluid dynamics

Fabrication of a sinter-resistant Fe-MFI zeolite dragonfruit-like catalyst for syngas to aromatics conversion

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Journal of Energy Chemistry 2023年第2期77卷 70-79,I0003页

作者： chenguang Wang chengyan Wen Zheng Liang Zhipeng Tian Qian Jiang Yuhe Liao Xunzhu Jiang lungang chen Qiying Liu Longlong Ma Michiel Dusselier Guangzhou Institute of Energy Conversion Chinese Academy of SciencesGuangzhou 510640GuangdongChina Southeast University School of Energy and EnvironmentNanjing 210009JiangsuChina Center for Sustainable Catalysis and Engineering(CSCE) KU LeuvenCelestijnenlaan 200F3001 HeverleeBelgium CAS Key Laboratory of Renewable Energy Guangzhou 510640GuangdongChina Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development Guangzhou 510640GuangdongChina University of Chinese Academy of Sciences Beijing 100049China

Direct conversion of syngas to aromatics has great potential to decrease fossil fuel dependence.Here,a unique structured hybrid catalyst composed of Fe_(3)O_(4) nanoparticles intimately dispersed inside an acidic zeolite is developed.1 to 4 nm sized Fe_(3)O_(4) nanoparticles end up evenly dispersed in an acidic and slightly mesoporous Al-ZSM-5 based on Fe_(3)O_(4) restructuring during co-hydro thermal synthesis using organosilane modification.A very high aromatic productivity of 214 mmolaromatics h^(-1) gFe^(-1) can be obtained with a remarkable 62%aromatic selectivity in hydrocarbons.This catalyst has excellent sintering resistance ability and maintains stable aromatics production over 570 h.The synthetic insights that postulate a mechanism for the metastable oxide-zeolite reorganization during hydrothermal synthesis could serve as a generic route to sinter-resistant oxide-zeolite composite materials with uniform,well-dispersed oxide nanoparticles in close intimacy with-and partially confined in-a zeolite matrix.

关键词： Syngas Aromatics Sinter resistant Oxide-zeolite catalyst

Efficient production of ethyl levulinate from cassava over Al2(SO4)3 catalyst in ethanol–water system

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Journal of Energy Chemistry 2017年第1期26卷 115-120页

作者： Jin Tan Qiying Liu lungang chen Tiejun Wang Longlong Ma Guanyi chen School of Environmental Science and Engineering Tianjin UniversityTianjin 300072China Key Laboratory of Renewable Energy Guangzhou Institute of Energy ConversionChinese Academy of SciencesGuangzhou 510640GuangdongChina Guangdong Key Laboratory of New and Renewable Energy Research and Development Guangzhou 510640GuangdongChina

One-pot achievement of ethyl levulinate from cassava was conducted in ethanol–water system over several simple sulfate salt catalysts. Al2(SO4)3catalyst had the best performance in synthesizing ethyl levulinate comparing with those of a series of sulfate salts. The highest yields of ethyl levulinate was up to 39.27% as well as 7.78% levulinate acid when cassava was catalyzed in ethanol medium by adding 10?wt% water.13C and1H NMR spectroscopic investigations confirmed that isomerization of glucose to fructose over Al2(SO4)3catalyst is an important step in producing ethyl levulinate and levulinate acid. Due to aggregations of Al3+under hydrothermal conditions, tiny amount of Al3+were detected in filtrate at the percentage of 0.32% even if in absolute water. Br?nsted and Lewis acids could improve the yield of ethyl levulinate and levulinate acid by synergistic effect. All results suggested that Al2(SO4)3was a simple and efficient catalyst for ethyl levulinate and levulinate acid production. ? 2016 Science Press

关键词： Catalysts Ethanol Plants (botany) Sulfur compounds Waterworks

In situ synthesis of biomass-derived Ni/C catalyst by self-reduction for the hydrogenation of levulinic acid to γ-valerolactone

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Journal of Energy Chemistry 2019年第10期28卷 204-214页

作者： Shuqi Fang Zhibing Cui Yuting Zhu chenguang Wang Jing Bai Xinghua Zhang Ying Xu Qiying Liu lungang chen Qi Zhang Longlong Ma School of Chemical Engineering and Energy Zhengzhou UniversityZhengzhou 450001HenanChina Key Laboratory of Renewable Energy Guangzhou Institute of Energy ConversionChinese Academy of SciencesGuangzhou 510640GuangdongChina University of Chinese Academy of Science Beijing 100049China

Herein,we reported in situ synthesis of biomass-derived Ni/C catalyst by self-reduction with pomelo peel.Compared with the conventional method, which includes carbonization, activation, impregnation and reduction, the entire preparation process was simplified to two steps, which was more straightforward. This synthesis method was green as Ni/C can be prepared without any additional chemical and the self-reduction process was realized in N2, which can avoid using H2 thus averting some problems such as storage, transportation and safety of H2. Meanwhile, the size and dispersion of Ni particles can be controlled by changing carbonization temperature.The synthesis mechanism of Ni/C catalyst with selfreduction was investigated, which was mainly attributed to the carbon and reducing gas produced during the carbonization process.For the catalytic performance of GVL synthesis, a high yield (94.5%) can be obtained and it exhibited good stability up to 5 cycles without obvious loss of catalytic activity.

关键词： Pomelo peel Ni/C Self-reduction Hydrogenation Levulinic acid γ-Valerolactone

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基于木质纤维素的生物基材料

化学进展 2024年第5期36卷 709-723页

作者：徐斌刘建国张兴华陈伦刚张琦马隆龙中国科学技术大学能源科学与技术学院合肥230026 东南大学能源与环境学院南京210096 中国科学院广州能源研究所广州510640

随着化石能源的不断消耗和生态环境的不断破坏,开发环境友好型的可再生电化学储能装置与生物医疗材料尤为迫切。木质纤维素类生物质作为重要的可再生资源,具有成本低、易于获得、环境友好、孔隙结构丰富等优势,其作为一种可再生、可生... 详细信息

随着化石能源的不断消耗和生态环境的不断破坏,开发环境友好型的可再生电化学储能装置与生物医疗材料尤为迫切。木质纤维素类生物质作为重要的可再生资源,具有成本低、易于获得、环境友好、孔隙结构丰富等优势,其作为一种可再生、可生物降解、具有生物相容性的优秀改性材料基质,具有广泛的应用前景。生物质材料的处理已经从传统方法(包括燃烧法、饲料化、肥料化与基质化处理),逐步走向能源化、生态化、材料改性,以及制备新型生物基功能与智能材料产品,如:高性能储能装置与生物医疗装备。总之,以生物质材料为主要原料,开发新型基质与功能材料是发展趋势。本文对制备用于高性能储能装置与生物医疗领域的生物质衍生材料的最新研究进展进行了总结与展望,同时指出面临的问题与挑战。

关键词：木质素纤维素半纤维素生物基材料合成材料

基于VOSviewer的我国护理模拟教学的研究进展与热点分析

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卫生职业教育 2024年第9期42卷 96-101页

作者：唐喻莹苏行陈宏碧朱伦刚电子科技大学医学院附属绵阳医院/绵阳市中心医院四川绵阳621000

目的分析我国护理模拟教学领域研究主题、热点、发展趋势,旨在为我国护理模拟教学改革和发展提供参考。方法检索中国知网、万方、维普数据库,获取有关护理模拟教学的文献;采用NoteExpress软件统计分析年发文量、期刊分布等,采用VOSviewe... 详细信息

目的分析我国护理模拟教学领域研究主题、热点、发展趋势,旨在为我国护理模拟教学改革和发展提供参考。方法检索中国知网、万方、维普数据库,获取有关护理模拟教学的文献;采用NoteExpress软件统计分析年发文量、期刊分布等,采用VOSviewer 1.6.17软件进行作者、高频关键词、关键词共现聚类、关键词共现时间线分析。结果共纳入研究型文献3657篇,发文量总体呈上升趋势,其中发文量最多的期刊是《卫生职业教育》;我国护理模拟教学领域有相对独立的8个研究团队;高频关键词包括情景模拟教学、效果、护生、应用、带教等;研究热点主要为高仿真模拟教学和标准化病人在学校护理教学中的应用,情景模拟教学在低年资护士、新护士、规培护士中的应用效果等;情景模拟教学法与PBL教学法等其他方法联合运用,护理模拟教学在急诊科教学、实习生教学、护理带教中的应用是近年来新兴的研究主题。结论我国护理模拟教学领域研究发文量总体呈上升趋势,护理模拟教学改革、护理模拟教学的应用、多种教学法联合运用等的研究方兴未艾。

关键词：护理模拟教学 VOSviewer

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电催化加氢反应技术进展

当代化工研究 2024年第13期 5-8页

作者：潘晟昊陈伦刚张兴华张琦马隆龙刘建国东南大学-蒙纳士大学苏州联合研究生院江苏215123 东南大学能源与环境学院江苏210096

由可再生资源转化电力能减少化石燃料带来的能源与环境问题。电催化是比传统热催化更为绿色的反应方式,在化学品合成、碳捕集及转化、污染物消除和废弃物高值转化等领域尤有前景。电催化加氢以电能为能量来源,以非氢气氢供体为质子源,... 详细信息

由可再生资源转化电力能减少化石燃料带来的能源与环境问题。电催化是比传统热催化更为绿色的反应方式,在化学品合成、碳捕集及转化、污染物消除和废弃物高值转化等领域尤有前景。电催化加氢以电能为能量来源,以非氢气氢供体为质子源,具有能量来源广泛、反应条件温和、无氢气储运成本、反应进程易控等优点。本文综述了近年来电催化的选择性加氢反应技术的研究进展。首先,介绍了电催化加氢的原理及其优点。其次,从析氢副反应的抑制和复杂有机物官能团加氢的角度,评估了电催化选择性加氢的研究成果。最后,指出了电催化加氢仍有电解液析氢、含膜电催化体系成本高及能量密度无法保证等问题。得出要实现选择性和实用性的平衡,除了设计高活性的电催化剂外,探索高效电解质体系以及催化剂和电极之间有效偶联的方法十分重要的结论。

关键词：催化电催化加氢选择性能源

Raney镍-质子型离子液体体系催化木质素平台分子加氢脱氧制备烷烃

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化工学报 2023年第9期74卷 3697-3707页

作者：杨绍旗赵淑蘅陈伦刚王晨光胡建军周清马隆龙河南农业大学机电工程学院河南郑州450002 东南大学能源与环境学院江苏南京211189 中国科学院广州能源研究所广东广州510640 中国科学院绿色过程制造创新研究院北京100190

木质素是生物质组成中唯一的芳香类化合物组分,高效转化木质素制备烷烃对于生物质全组分利用具有重要意义。通过设计合成质子型醇胺类离子液体,并与Raney镍催化剂建立催化体系,考察了其对于木质素衍生酚及醚类化合物加氢脱氧制备环烷烃... 详细信息

木质素是生物质组成中唯一的芳香类化合物组分,高效转化木质素制备烷烃对于生物质全组分利用具有重要意义。通过设计合成质子型醇胺类离子液体,并与Raney镍催化剂建立催化体系,考察了其对于木质素衍生酚及醚类化合物加氢脱氧制备环烷烃的反应特性和规律。研究证明,Raney镍协同二乙醇胺三氟甲烷磺酸盐([2-HDEA]OTf)催化体系具有最优的催化木质素衍生酚类和醚类化合物加氢脱氧效果。在反应温度130℃,时间15 h,氢气压力3 MPa条件下,木质素衍生酚类及醚类化合物转化率>99.0%,目标产物环烷烃产率>80.0%。Raney镍催化剂表现出与Rh/C等贵金属相近的催化效果,离子液体阴离子结构(OTf)在催化脱氧过程中起关键性作用。

关键词：木质素离子液体 Raney镍加氢脱氧烷烃

地方政府运行中的“职能替代”现象研究——以劳动监察部门为例

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公共管理学报 2021年第3期18卷 38-49,170页

作者：陈家建王伦刚南京大学社会学院南京210023 西南财经政法大学法学院成都611130

在中国的地方政府运行中,存在着职能替代现象,即组织的制度职能被搁置,长期性、系统性地承担另一套职能。职能替代是组织职能多样化的一种类型,不同于组织转型,也不同于运动式治理,在既有的学术研究中缺乏专门的分析框架和解释机制。本... 详细信息

在中国的地方政府运行中,存在着职能替代现象,即组织的制度职能被搁置,长期性、系统性地承担另一套职能。职能替代是组织职能多样化的一种类型,不同于组织转型,也不同于运动式治理,在既有的学术研究中缺乏专门的分析框架和解释机制。本文通过对S省劳动监察部门的分析,揭示了职能替代的运行特征与发生机制。治理地方性与组织统一性的张力是职能替代产生的根本原因,两种张力的普遍存在使职能替代在许多科层部门都是常见的现象。职能替代,特别是劳动监察部门产生的关联型职能替代,增强了政府组织运作的灵活性,能够因地制宜地调整组织行为,对地方治理具有重要意义。对职能替代的探讨,有助于深入理解中国科层系统的运行逻辑,并对相关组织理论进行多角度思考。

关键词：职能替代劳动监察部门治理地方性组织统一性组织研究