Article
Chemistry, Multidisciplinary
Josue Alves Melo, Mirele Santana de Sa, Ainara Moral, Fernando Bimbela, Luis M. Gandia, Alberto Wisniewski
Summary: Renewable hydrocarbons were produced from waste cottonseed oil through micropyrolysis, and catalytic upgrading of the pyrolysis vapors was investigated using various catalysts. Results showed that Mo-Co/gamma-Al2O3 catalyst had the highest conversion yields into total renewable hydrocarbons, indicating its effectiveness in the process.
Article
Engineering, Environmental
Jida Wang, Yifei Chen, Can Liu, Yi Lu, Xu Lin, Defa Hou, Cuiping Luo, Dechao Wang, Zhifeng Zheng, Yunwu Zheng
Summary: Efficient, economical and environmentally friendly Mo-based bimetallic Al/MCM-41 catalysts were developed for catalytic oleic acid pyrolysis into hydrocarbon-like upgrading biofuel. Different metal oxide types and Ce to Mo mixed ratios were compared and characterized, and the deoxygenation effect and reusability properties were evaluated. The molybdenum-based bimetallic catalyst exhibited superior deoxygenation activity in the decarbonylation and decarboxylation pathways. The synergistic effect between Ce and MoOx species contributed to better reaction activity and coke resistance.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Kuntong Song, Yi Li, Ruiqi Zhang, Nan Wang, Junhong Liu, Wenxia Hou, Qing Zhou, Xingmei Lu
Summary: Compared to conventional pyrolysis, steam-assisted pyrolysis of PET effectively eliminates char and upgrades TPA. However, the degree of cracking varies greatly, affecting the yield and purity of TPA. To enhance TPA, catalysis among different components of the metal-acid catalyst was utilized. Through experiments, Pt@Hzsm-5 was identified as the optimal catalyst, promoting hydrogen transfer efficiency and reducing impurities. This discovery clarifies the synergistic catalytic effect in PET pyrolysis, laying the foundation for further catalyst screening and industrial application of TPA preparation.
Article
Chemistry, Analytical
Jida Wang, Zhangshuai Ding, Feng Shi, Yifei Chen, Defa Hou, Fulin Yang, Can Liu, Yi Lu, Xu Lin, Zhifeng Zheng, Yunwu Zheng
Summary: An efficient CaO-MgO-promoting γ-Al2O3 decarboxylation catalyst was prepared via ball-milling method for regulating product distribution and production of hydrocarbons. The catalyst showed high selectivity in the catalytic copyrolysis of oleic acid and methanol. Factors influencing the reaction, reaction mechanisms, possible pathways, and deactivation mechanisms were investigated. Methanol addition enhanced biogasoline selectivity and reduced coke deposition.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Energy & Fuels
Kai Sun, Wanli Wang, Nickolas J. Themelis, A. C. Thanos Bourtsalas, Qunxing Huang
Summary: The co-pyrolysis of PC and PE/PP in the presence of HZSM-5 catalyst without external hydrogen addition was studied to promote deoxygenation and aromatic hydrocarbon formation. Increasing the blending ratio of PE/PP resulted in a higher yield of gas phase products and decreased yields of oil phase, coke, and solid products. Catalyst regeneration reduced acidity but showed slight decrease in deoxygenation and aromatization effects.
Article
Environmental Sciences
Majid Saidi, Alireza Zhandnezhad
Summary: Biofuel production from neem seeds can be achieved through pyrolysis process, and the use of catalysts can enhance the conversion of pyrolysis oil into biofuel. The addition of different catalysts leads to different chemical reactions and improvements in the quality and composition of the products.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Biochemistry & Molecular Biology
Yan Xiao, Nannan Zhan, Jie Li, Yuan Tan, Yunjie Ding
Summary: The catalytic upgrading of ethanol into butanol through the Guerbet coupling reaction has been widely studied due to the abundance of bioethanol and the versatility of butanol applications. Four different supported Cu catalysts were used to investigate the catalytic performances for ethanol conversion. It was found that Ni-containing catalysts showed better reactivity, Al-containing catalysts exhibited better stability, and Ni-Al catalytic systems had a synergistic effect on ethanol conversion, butanol selectivity, and catalyst stability. Various characterizations were applied to analyze the properties of different catalysts, and it was found that Cu species provided active sites for ethanol dehydrogenation/hydrogenation, while the support derived from Ni-Al-LDH supplied appropriate acid-base sites for aldol condensation, resulting in high butanol selectivity. Moreover, catalysts with strong reducibility, such as Cu/NiO, were easily deactivated during the Guerbet coupling process.
Article
Energy & Fuels
Candice R. Ellison, Dorin Boldor
Summary: This study investigates a low cost iron-based catalyst for mild in-situ upgrading of fast pyrolysis vapors, which can reduce pyrolysis liquid yields, increase gas yields, and produce a more stable liquid product. Increasing iron loading can decrease catalyst coking, but result in greater amounts of polyaromatics in the pyrolysis liquid. Upgraded pyrolysis liquids have lower concentrations of unstable carboxylic acids and aldehydes, with a shift towards a more stable liquid product. Iron-doped montmorillonite catalyst is demonstrated to be a viable, low cost catalyst for mild upgrading of fast pyrolysis vapors.
Article
Green & Sustainable Science & Technology
Shasha Liu, Gang Wu, Yi Gao, Bin Li, Yu Feng, Jianbin Zhou, Xun Hu, Yong Huang, Shu Zhang, Hong Zhang
Summary: The study showed that catalytic reaction with activated char could increase the relative content of phenolic substances in bio-oil and create more active sites. At higher temperatures, the content of aromatic hydrocarbons in bio-oil increased while oxygen-containing compounds (such as ketones, acids, aldehydes) decreased.
Article
Chemistry, Physical
Camila P. Ferraz, Anouchka Kimene, Karen Silva Vargas, Svetlana Heyte, Claire Durlin, Olivier Simon, Franck Dumeignil, Sebastien Paul, Robert Wojcieszak
Summary: The study shows that Ni-Cu alloy catalysts exhibit high catalytic performance in decarboxylation reactions, avoiding catalyst deactivation and enhancing product yields. By investigating the structure and properties of the catalyst in depth, optimization of reaction conditions can be achieved to achieve higher yields.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Thermodynamics
Mahdi Abdi-Khanghah, Arezou Jafari, Goodarz Ahmadi, Abdolhossein Hemmati-Sarapardeh
Summary: A novel synthesis process was proposed to produce mono, bi, and trimetallic Sn-Ni-Cu/ionic microemulsion catalysts (IMECs) that are active and feasible. The catalytic solutions and IMECs were characterized using various techniques, including conductivity, refractivity index, inductively coupled plasma, light microscope, and FTIR. Experimental evaluation and statistical modeling were conducted to understand the interaction between catalyst formulation and operational parameters. The optimal catalyst formulation was found to be the trimetallic IMEC with 23.09% Sn, 60.648% Ni, and 16.268% Cu, which exhibited a viscosity of 586.99 cP and a gas weight percent (PGWP) of 1.269%. The reaction temperature of 73 degrees C and catalysts wt% of 0.2% were considered as the optimum operational condition.
Article
Chemistry, Physical
Yunwu Zheng, Jida Wang, Donghua Li, Can Liu, Yi Lu, Xu Lin, Zhifeng Zheng
Summary: Catalytic pyrolysis is an effective method for converting biomass into value-added chemicals, but developing cost-effective catalysts remains a challenge. A highly efficient bimetallic Pt-Ni catalyst was fabricated for upgrading biomass into hydrocarbon-rich bio-oil. The addition of Pt improved the interaction between NiO and alumina, enhancing nickel dispersion and promoting C=O hydrogenation. The Pt-Ni/Al = 1:2 catalyst showed excellent catalytic performance, achieving highest peak areas of desired hydrocarbons and aromatic hydrocarbons.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Applied
Gulce Cakman, Selim Ceylan, Suna Balci
Summary: Converting waste oils into renewable fuels by catalytic deoxygenation reactions was studied using Ni@CMK-3 catalyst. The results showed that Ni@CMK-3 catalyst was suitable for producing biofuels from oleic acid pyrolysis.
JOURNAL OF POROUS MATERIALS
(2023)
Article
Engineering, Environmental
Lingmei Yang, Wen Luo, Hui Wen Li, Hai yong Wang, Aihua Zhang, Zhilian Wu, Qiying Liu, Zhongming Wang, Pengmei Lv, Zhenhong Yuan
Summary: In this study, a series of Ni/SAPO-11 catalysts were prepared via impregnation with different solvents, showing that citric acid and ethylene glycol can enhance the catalytic performance, improve the selectivity of iso-alkanes, and have significant potential for application.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Energy & Fuels
Shuo Zhang, Yunfei Wu, Yiming Wang, Mei Zhong, Guijin Wang, Yanpeng Ban, Shun Zhao, Haoquan Hu, Lijun Jin
Summary: This study applied a CO2-enhanced water leaching method to remove alkali/alkaline earth metallic species from biochar and used the demineralized biochar as a catalyst for upgrading pyrolysis biooil. The results showed that the pore structure of the catalyst played a dominant role in increasing phenols contents, while alkali/alkaline earth metallic species enhanced the polymerization of aromatic hydrocarbons and the decarbonylation of oxygenated compounds.
Article
Chemistry, Analytical
Yunwu Zheng, Jida Wang, Donghua Li, Can Liu, Yi Lu, Xu Lin, Zhifeng Zheng
Summary: A high-performance hierarchical porous carbon enriched in oxygen-containing functional groups was prepared using pine as the raw material, KOH and KMnO4 as activators. The two-step process and higher activation to biomass ratio led to excellent adsorption performance. Adsorption mechanisms differ between KOH and KMnO4 activation due to differences in chemical structures and functional groups present on the biochar surface.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
Article
Agricultural Engineering
Xin Cai, Zhaoxia Zhang, Yueyuan Ye, Duo Wang, Shuirong Li, Dechao Wang, Zhifeng Zheng
Summary: The use of acid addition method improves the conversion of fatty acids and esters into long-chain alkanes under mild hydrothermal conditions, simplifies the reaction system, expands the range of applicable raw materials, and maintains excellent catalytic activity.
BIOMASS & BIOENERGY
(2022)
Article
Energy & Fuels
Jinlei Chen, Dechao Wang, Fenqiang Luo, Xinyu Yang, Xingyong Li, Shuirong Li, Yueyuan Ye, Duo Wang, Zhifeng Zheng
Summary: This study reports on the selective production of alkanes and higher fatty alcohols through hydrodeoxygenation (HDO) of palmitic acid over red mud-supported nickel catalysts (Ni/RM). The results show that 7%Ni/RM exhibits the best catalytic performance and demonstrates stable reuseability. Hexadecanol plays an important role in the routes of deoxygenation, decarbonylation, and decarboxylation.
Article
Chemistry, Physical
Lei Tao, Bingyuan Ma, Fenqiang Luo, Zhengrui Xu, Zhifeng Zheng, Haibo Huang, Peng Bai, Feng Lin
Summary: The conversion of single-sheet graphitic carbon papers to function-gradient Li/C composite anodes was achieved by controlling the thermal infiltration time, allowing for controllable formations of LiC6 and Li metal. The resulting composite anode with a unique gradient structure enables selective utilization of Li metal and LiC6 as the active component under different electrochemical conditions. This composite anode has a stable porous framework and abundant lithiophilic sites, providing uniform local electric field and stable Li metal deposition during cycling, leading to better long-term cycling stability and higher rate capability compared to traditional Li foil anodes.
Article
Biochemistry & Molecular Biology
Yan Li, Can Liu, Menglin Chen, Yulong An, Yunwu Zheng, Hao Tian, Rui Shi, Xiahong He, Xu Lin
Summary: Carbon dots (CDs) are widely used nanomaterials with good biocompatibility and photostability. This paper presents a simple and convenient solvent-free pyrolysis method to directly prepare water-soluble CDs with blue fluorescence and a high quantum yield. The obtained CDs demonstrate selectivity for the detection of various metal ion solutions, especially Ni2+.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Biochemistry & Molecular Biology
Yulong An, Can Liu, Yan Li, Menglin Chen, Yunwu Zheng, Hao Tian, Rui Shi, Xiahong He, Xu Lin
Summary: This paper presents a unique strategy to achieve multicolour solid-state fluorescence of carbon dots (CDs) by regulating the solutions. The authors successfully prepared orange, green, and blue solid fluorescent CDs using different precursors and solvents, and demonstrated their application potential in LED lighting equipment. The findings provide valuable insights into the development of luminescent nanomaterials.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Multidisciplinary
Yan Li, Can Liu, Menglin Chen, Yunwu Zheng, Hao Tian, Rui Shi, Xiahong He, Xu Lin
Summary: Biomass carbon dots with red, green, and blue luminescence were synthesized using a simple hydrothermal method under different pH conditions. The optical properties of these carbon dots can be controlled by the pH value. Mixing biomass carbon dots with epoxy resin can create warm and cold white LEDs with promising applications.
Article
Biochemistry & Molecular Biology
Wendong Wang, Donghua Li, Ping Xiang, Yunwu Zheng, Zhifeng Zheng, Xu Lin, Xiahong He, Can Liu
Summary: The pyrolysis of biomass can convert it into high-performance chemicals and functional materials. However, current technologies have limitations in terms of conversion rates and products. This study presents a method for producing nitrogen-containing chemicals and biochar with high adsorption capacity through the carbonization of walnut shells. It provides an efficient, rapid, and environmentally friendly approach for utilizing biomass.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Biochemistry & Molecular Biology
Shijiao Qin, Yujia Wu, Hao Tian, Yun Liu, Huan Kan, Defa Hou, Xu Lin, Yunwu Zheng, Zhifeng Zheng, Can Liu
Summary: This paper introduces a modified starch film with pH response characteristics, which can be used for real-time monitoring of the safety of liquid foodstuffs, especially for juice quality monitoring.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Polymer Science
Xuehui Li, Bowen Liu, Lulu Zheng, Hisham Essawy, Zhiyan Liu, Can Liu, Xiaojian Zhou, Jun Zhang
Summary: Bio-based biodegradable foams were successfully formulated using starch, furfuryl alcohol, glyoxal, and condensed tannin. The addition of tannin from forestry improved the properties of the foam, such as compressive strength and flame retardancy. Furthermore, the foam exhibited biodegradation under the influence of Penicillium sp.
Article
Biochemistry & Molecular Biology
Jin Xie, Hao Sun, Yuchun Yang, Junxiong Liang, Yun Li, Defa Hou, Xu Lin, Jun Zhang, Zhengjun Shi, Can Liu
Summary: In this study, lignin thermoplastic phenolic resins (LPRs) were prepared using lignin and toughened by the addition of polybutylene succinate (PBS). The results showed that the tensile strength of the LPRs increased by 2.8 times and the elongation at break increased by 31 times when 30% of PBS was added. This work demonstrates the potential of lignin thermoplastic phenolic resins for industrial applications and provides novel concepts for toughening biobased aromatic resins with PBS.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Biochemistry & Molecular Biology
Ming Chen, Fulin Yang, Defa Hou, Yunwu Zheng, Can Liu, Xu Lin, Yan Li, Hao Sun
Summary: In this study, three representative fluorescent carbon dots (CDs) were synthesized under different pH conditions, exhibiting yellow, green, and blue fluorescence and comparable carbon structures. The diversity of their photoluminescence properties was attributed to the different sizes of sp(2) conjugated structures. By mixing the synthesized CDs with epoxy resin, yellow, green, and blue LED devices were successfully prepared.
Article
Chemistry, Multidisciplinary
Menglin Chen, Can Liu, Jichao Zhai, Yulong An, Yan Li, Yunwu Zheng, Hao Tian, Rui Shi, Xiahong He, Xu Lin
Summary: A simple, green, and solvent-free pyrolysis method for the preparation of starch-based carbon dots (CDs) was developed. The CDs prepared at 300 degrees C exhibited a highest quantum yield of 21.0%, which was mainly due to the high degree of graphitisation of the CDs. The CDs were selective for the detection of Ru3+ ion solutions.
Article
Chemistry, Physical
Jie Liu, Dipan Xuan, Zhe Lu, Zhuang Wang, Qian Liu, Shuirong Li, Duo Wang, Yueyuan Ye, Dechao Wang, Zhifeng Zheng
Summary: This study investigates the interfacial interactions between carbon materials and PPy by forming novel freestanding composite electrodes via depositing PPy on the surface of carbon foam. The results show that the introduction of different oxygen-containing functional groups affects the cycling stability of composite materials. Furthermore, intermolecular interactions also impact the redox properties of composite electrodes.
APPLIED SURFACE SCIENCE
(2022)
Article
Green & Sustainable Science & Technology
Cameron Bracken, Nathalie Voisin, Casey D. Burleyson, Allison M. Campbell, Z. Jason Hou, Daniel Broman
Summary: This study presents a methodology and dataset for examining compound wind and solar energy droughts, as well as the first standardized benchmark of energy droughts across the Continental United States (CONUS) for a 2020 infrastructure. The results show that compound wind and solar droughts have distinct spatial and temporal patterns across the CONUS, and the characteristics of energy droughts are regional. The study also finds that compound high load events occur more often during compound wind and solar droughts than expected.
Article
Green & Sustainable Science & Technology
Ning Zhang, Yanghao Yu, Jiawei Wu, Ershun Du, Shuming Zhang, Jinyu Xiao
Summary: This paper provides insights into the optimal configuration of CSP plants with different penetrations of wind power by proposing an unconstrained optimization model. The results suggest that large solar multiples and TES are preferred in order to maximize profit, especially when combined with high penetrations of wind and photovoltaic plants. Additionally, the study demonstrates the economy and feasibility of installing electric heaters (EH) in CSP plants, which show a linear correlation with the penetration of variable energy resources.
Article
Green & Sustainable Science & Technology
M. Szubel, K. Papis-Fraczek, S. Podlasek
Article
Green & Sustainable Science & Technology
J. Silva, J. C. Goncalves, C. Rocha, J. Vilaca, L. M. Madeira
Summary: This study investigated the methanation of CO2 in biogas and compared two different methanation reactors. The results showed that the cooled reactor without CO2 separation achieved a CO2 conversion rate of 91.8%, while the adiabatic reactors achieved conversion rates of 59.6% and 67.2%, resulting in an overall conversion rate of 93.0%. Economic analysis revealed negative net present worth values, indicating the need for government monetary incentives.
Article
Green & Sustainable Science & Technology
Yang Liu, Yonglan Xi, Xiaomei Ye, Yingpeng Zhang, Chengcheng Wang, Zhaoyan Jia, Chunhui Cao, Ting Han, Jing Du, Xiangping Kong, Zhongbing Chen
Summary: This study investigated the effect of using nanofiber membrane composites containing Prussian blue-like compound nanoparticles (PNPs) to relieve ammonia nitrogen inhibition of rural organic household waste during high-solid anaerobic digestion and increase methane production. The results showed that adding NMCs with 15% PNPs can lower the concentrations of volatile fatty acids and ammonia nitrogen, and increase methane yield.
Article
Green & Sustainable Science & Technology
Zhong Ge, Xiaodong Wang, Jian Li, Jian Xu, Jianbin Xie, Zhiyong Xie, Ruiqu Ma
Summary: This study evaluates the thermodynamic, exergy, and economic performance of a double-stage organic flash cycle (DOFC) using ten eco-friendly hydrofluoroolefins. The influences of key parameters on performance are analyzed, and the advantages of DOFC over single-stage type are quantified.
Article
Green & Sustainable Science & Technology
Nicolas Kirchner-Bossi, Fernando Porte-Agel
Summary: This study investigates the optimization of power density in wind farms and its sensitivity to the available area size. A novel genetic algorithm (PDGA) is introduced to optimize power density and turbine layout. The results show that the PDGA-driven solutions significantly reduce the levelized cost of energy (LCOE) compared to the default layout, and exhibit a convex relationship between area and LCOE or power density.
Article
Green & Sustainable Science & Technology
Chunxiao Zhang, Dongdong Li, Lin Wang, Qingpo Yang, Yutao Guo, Wei Zhang, Chao Shen, Jihong Pu
Summary: In this study, a novel reversible liquid-filled energy-saving window that effectively regulates indoor solar radiation heat gain is proposed. Experimental results show that this window can effectively reduce indoor temperature during both summer and winter seasons, while having minimal impact on indoor illuminance.
Article
Green & Sustainable Science & Technology
Alessandro L. Aguiar, Martinho Marta-Almeida, Mauro Cirano, Janini Pereira, Leticia Cotrim da Cunha
Summary: This study analyzed the Brazilian Equatorial Shelf using a high-resolution ocean model and found significant tidal variations in the area. Several hypothetical barrages were proposed with higher annual power generation than existing barrages. The study also evaluated the installation effort of these barrages.
Article
Green & Sustainable Science & Technology
Francesco Superchi, Nathan Giovannini, Antonis Moustakis, George Pechlivanoglou, Alessandro Bianchini
Summary: This study focuses on the optimization of a hybrid power station on the Tilos island in Greece, aiming to increase energy export and revenue by optimizing energy fluxes. Different scenarios are proposed to examine the impact of different agreements with the grid operator on the optimal solution.
Article
Green & Sustainable Science & Technology
Peimaneh Shirazi, Amirmohammad Behzadi, Pouria Ahmadi, Sasan Sadrizadeh
Summary: This research presents two novel energy production/storage/usage systems to reduce energy consumption and environmental effects in buildings. A biomass-fired model and a solar-driven system integrated with photovoltaic thermal (PVT) panels and a heat pump were designed and assessed. The results indicate that the solar-based system has an acceptable energy cost and the PVT-based system with a heat pump is environmentally superior. The biomass-fired system shows excellent efficiency.
Article
Green & Sustainable Science & Technology
Zihao Qi, Yingling Cai, Yunxiang Cui
Summary: This study aims to investigate the operational characteristics of the solar-ground source heat pump system (SGSHPS) in Shanghai under different operation modes. It concludes that tandem operation mode 1 is the optimal mode for winter operation in terms of energy efficiency.
Article
Green & Sustainable Science & Technology
L. Bartolucci, S. Cordiner, A. Di Carlo, A. Gallifuoco, P. Mele, V. Mulone
Summary: Spent coffee grounds are a valuable biogenic waste that can be used as a source of biofuels and valuable chemicals through pyrolysis and solvent extraction processes. The study found that heavy organic bio-oil derived from coffee grounds can be used as a carbon-rich biofuel, while solvent extraction can extract xantines and p-benzoquinone, which are important chemicals for various industries. The results highlight the promising potential of solvent extraction in improving the economic viability of coffee grounds pyrolysis-based biorefineries.
Article
Green & Sustainable Science & Technology
Luiza de Queiroz Correa, Diego Bagnis, Pedro Rabelo Melo Franco, Esly Ferreira da Costa Junior, Andrea Oliveira Souza da Costa
Summary: Building-integrated photovoltaics, especially organic solar technology, are important for reducing greenhouse gas emissions in the building sector. This study analyzed the performance of organic panels laminated in glass in a vertical installation in Latin America. Results showed that glass lamination and vertical orientation preserved the panels' performance and led to higher energy generation in winter.
Article
Green & Sustainable Science & Technology
Zhipei Hu, Shuo Jiang, Zhigao Sun, Jun Li
Summary: This study proposes innovative fin arrangements to enhance the thermal performance of latent heat storage units. Through optimization of fin distribution and prediction of transient melting behaviors, it is found that fin structures significantly influence heat transfer characteristics and melting behaviors.
