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Electrocatalytic cleavage of a lignin β-O-4 model compound and coupling with nitrogen-containing aromatics using Prussian blue analogue-derived nickel–cobalt spinel

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Journal of Energy Chemistry 2025年第1期100卷 628-636页

作者： Yi Qi Xueying Chen Bowen Liu Xuliang Lin Xueqing Qiu Yanlin Qin Guangdong Provincial Key Laboratory of Plant Resources Biorefinery School of Chemical Engineering and Light Industry Guangdong University of Technology Guangdong Provincial Laboratory of Chemistry and Fine Chemical Engineering Jieyang center Guangdong Basic research center of Excellence for Ecological Security and Green Development Guangdong University of Technology

Electrochemical conversion of lignin for the production of high-value heterocyclic aromatic compounds has great *** demonstrate the targeted synthesis and cation modulation of NiCo2O4spinel nanoboxes,synthesized via cation exchange and calcination *** catalysts exhibit excellent efficacy in the electrocatalytic conversion of lignin model compounds,specifically 2-phenoxy-1-phenylethanol,into nitrogen-containing aromatics,achieving high conversion rates and *** catalysts were synthesized via a cation exchange and calcination oxidation process,using Prussian blue nanocubes as *** porous architecture and polymetallic composition of the NiCo2O4spinel demonstrated superior performance in electrocatalytic oxidative coupling,achieving a 99.2 wt%conversion rate of the 2-phenoxy-1-phenylethanol with selectivities of 37.5 wt%for quinoline derivatives and 31.5 wt%for *** innovations include the development of a sustainable one-pot synthesis method for quinoline derivatives,the elucidation of a multistage reaction pathway involving CAO bond cleavage,hydroxyaldol condensation,and CAN bond formation,and a deeper mechanistic understanding derived from DFT *** work establishes a new strategy for lignin valorization,offering a sustainable route to produce high-value nitrogen-containing aromatics from renewable biomass under mild conditions,without the need for additional reagents.

关键词： Spinel biomass valorization Electrocatalysis Lignin oxidation Coupling

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Smart Cellulose‑Based Janus Fabrics with Switchable Liquid Transportation for Personal Moisture and Thermal Management

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Nano-Micro Letters 2025年第1期17卷 333-347页

作者： Jianfeng Xi Yanling Lou Liucheng Meng Chao Deng Youlu Chu Zhaoyang Xu Huining Xiao Weibing Wu Jiangsu Co‑Innovation center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and MaterialsJiangsu Provincial Key Lab of Sustainable Pulp and Paper Technology and Biomass MaterialsNanjing Forestry UniversityNanjing 210037People’s Republic of China College of Materials Science and Engineering Nanjing Forestry UniversityNanjing 210037People’s Republic of China Department of Chemical Engineering University of New BrunswickFrederictonNB E3B 5A3Canada Macromolecular Chemistry and Bavarian Polymer Institute University of BayreuthBayreuth 95440Germany

The Janus fabrics designed for personal moisture/thermal regulation have garnered significant attention for their potential to enhance human ***,the development of smart and dynamic fabrics capable of managing personal moisture/thermal comfort in response to changing external environments remains a ***,a smart cellulose-based Janus fabric was designed to dynamically manage personal moisture/*** cotton fabric was grafted with N-isopropylacrylamide to construct a temperature-stimulated transport ***,hydrophobic ethyl cellulose and hydrophilic cellulose nanofiber were sprayed on the bottom and top sides of the fabric to obtain wettability *** fabric exhibits anti-gravity directional liquid transportation from hydrophobic side to hydrophilic side,and can dynamically and continuously control the transportation time in a wide range of 3–66 s as the temperature increases from 10 to 40℃.This smart fabric can quickly dissipate heat at high temperatures,while at low temperatures,it can slow down the heat dissipation rate and prevent the human from becoming too *** addition,the fabric has UV shielding and photodynamic antibacterial properties through depositing graphitic carbon nitride nanosheets on the hydrophilic *** smart fabric offers an innovative approach to maximizing personal comfort in environments with significant temperature variations.

关键词： Directional water transport Cotton fabric Anti-gravity directional liquid transportation Janus wettability

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Isolation and Characterization of Cellulose Nanofiber(CNF)from Kenaf(Hibiscus cannabinus)Bast through the Chemo-Mechanical Process

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Journal of Renewable Materials 2024年第6期12卷 1057-1069页

作者： Rudi Dungani Mohammad Irfan Bakshi Tsabita Zahra Hanifa Mustika Dewi Firda A.Syamani Melbi Mahardika Widya Fatriasari School of Life Sciences and Technology Institut Teknologi BandungBandung40132Indonesia research center for biomass and bioproducts National Research and Innovation Agency(BRIN)Cibinong16911Indonesia

The present work emphasizes the isolation of cellulose nanofiber(CNF)from the kenaf(Hibiscus cannabinus)bast through a chemo-mechanical *** order to develop high CNF yield with superior properties of CNF for improving compatibility in varied applications this method is *** fiber purification involved pulping and bleaching treatments,whereas mechanical treatment was performed by grinding and high-pressure *** kraft pulping as a delignification method followed by bleaching has successfully removed almost 99%lignin in the fiber with high pulp yield and delignification *** morphology of the fibers was characterized by scanning electron microscopy,which showed a smooth surface,fiber bundles,gel-shaped nanofiber,and an average size of 94.05 nm with 69%of CNF in 34–100 nm *** chemo-mechanical process exhibited a more crystalline nature in CNF than pulp *** low zeta potential values exhibit the distribution of fibrils and colloidal suspension stability without any further agglomeration.A lower concentration of CNF is less stable exhibiting the product ***,the chemo-mechanical process for the isolation of CNF(Hibiscus cannabinus)from kenaf involves sustainable,low-cost,non-toxic,and cheap alternatives than other traditional methods.

关键词： Kenaf bast fiber kraft delignification and bleaching ultrafine grinder chemo-mechanical properties CNF

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Degradation Kinetics of Xylose and Glucose in Hydrolysate Containing Dilute Sulfuric Acid

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过程工程学报 2008年第6期8卷 1132-1137页

作者：亓伟张素平许庆利任铮伟颜涌捷 research center for biomass Energy East China University of Science and Technology

In preparation of fuel alcohol from biomass as feedstock, hydrolysis with dilute acid as catalyst is one way to produce fermentable saccharide, xylose and glucose. However, the acid is also the catalyst in degradation of xylose and glucose and the yield of sacchride is dependent on the kinetic behaviors of saccharide. The degradation kinetics of xylose and glucose in the hydrolysate was investigated under the conventional process conditions of hydrogen ion concentration from 0.05 to 0.2 mol/L and temperature from 150 to 200 ℃ . With a numerical calculation method, the kinetic parameters were estimated, and the activation energy of xylose and glucose in the degradation reaction was obtained. The kinetic equations correlating the effect of hydrogen ion concentration on the rate constants of degradation reaction were established. Comparison between the calculated results from the equations and experimental ones proved that the established kinetic model could satisfactorily predict the degradation behavior of xylose and glucose in the acidic hydrolysate.

关键词：降解动力学木糖葡萄糖水解过程稀硫酸

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Effect of Processing and Cultivar on Thermo-Chemical Properties of Australian-Grown Hemp Hurd(Cannabis sativa L.)

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Journal of Renewable Materials 2024年第8期12卷 1475-1493页

作者： Johannes Fehrmann Benoit Belleville Barbara Ozarska Maya Ismayati Wahyu Dwianto School of Agriculture Food and Ecosystem Sciences(SAFES)Faculty of ScienceThe University of MelbourneMelbourne3121Australia research center for biomass and bioproducts National Research and Innovation Agency(BRIN)Jakarta16911Indonesia

This study explored the thermo-chemical properties of industrial hemp hurd with different provenances,maturity stages,and retting *** findings were then compared to hemp hurd used in the fabrication of citric acid-bonded ultra-low-density hemp hurd ***-gas chromatography-mass spectrometry(Py-GC/MS),Fourier-transform infrared spectroscopy(FTIR),and thermogravimetric analysis(TGA)were employed to document the variability of the hurd and comprehend the potential impact on biobased composite *** choice of cultivar,maturity stage,and processing modality significantly influenced the chemical composition,presence of functional groups,and thermal stability of the ***-GC/MS revealed substantial variations in the lignin-to-carbohydrate(L/C)ratio,along with the absence of fatty acids in certain *** FTIR signals confirmed consistent functional groups,differences in peak intensities were indicative of carbohydrate variations associated with maturity and retting duration,impacting the availability of hydroxyl groups for,i.e.,interparticle bonding in citric acid-based ***,it was observed that shorter retting durations initially enhanced the thermal resistance,but prolonged retting led to accelerated degradation,significantly reducing the hurd’s residual *** findings indicated notable differences among the samples,emphasizing the importance of investigating variables such as provenance/cultivar,maturity,and processing *** assessment is essential to ensure effective agronomic practices that align the raw material characteristics with the specific requirements of intended applications,such as the fabrication of biobased hemp hurd composites.

关键词： Hemp hurd material characterization chemical analysis thermal analysis

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Flexible, ultrathin, and multifunctional polypyrrole/cellulose nanofiber composite films with outstanding photothermal effect, excellent mechanical and electrochemical properties

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Frontiers of Chemical Science and Engineering 2023年第8期17卷 1028-1037页

作者： Ya-Ge Zhang Ling-Zhi Huang Qi Yuan Ming-Guo Ma research center of biomass Clean Utilization MOE Engineering Research Center of Forestry Biomass Materials and BioenergyBeijing Key Laboratory of Lignocellulosic ChemistryCollege of Materials Science and TechnologyBeijing Forestry UniversityBeijing 100083China

Electrodes that combine energy storage with mechanical and photothermal performance are necessary for efficient development and use of flexible energy storage and conversion *** this study,the flexible,ultrathin,and multifunctional polypyrrole/cellulose nanofiber composite films were fabricated via a one-step“soak and polymerization”*** dense sandwich structure and strong interfacial interaction endowed polypyrrole/cellulose nanofiber composite films with excellent flexibility,outstanding mechanical strength,and desired ***,the polypyrrole/cellulose nanofiber composite film electrodes with quaternary amine functionalized cellulose nanofiber had the highest specific mass capacitance(392.90 F∙g^(–1))and specific areal capacitance(3.32 F∙cm^(–2))than the electrodes with unmodified and carboxyl functionalized cellulose ***,the polypyrrole/cellulose nanofiber composite films with sandwich structure had excellent photothermal conversion *** study demonstrated a feasible and versatile method for preparing of multifunctional composite films,having promising applications in various energy storage fields.

关键词： cellulose nanofiber electrochemical photothermal conversion polypyrrole

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Influence of Formulation and Hot-Pressing Conditions on the Performance of Bio-Based Molasses Adhesive for Plywood

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Journal of Renewable Materials 2024年第8期12卷 1383-1397页

作者： Jajang Sutiawan Alifah Syahfitri Sukma Surya Kusumah Dede Hermawan Rita Kartika Sari Luthfi Hakim Efri Mardawati Muhammad Adly Rahandi Lubis research center for biomass and bioproducts National Research and Innovation AgencyCibinong16911Indonesia Forest Product Department Faculty of Forestry and EnvironmentIPB UniversityBogor16680Indonesia Department of Forest Products Faculty of ForestryUniversitas Sumatera UtaraMedan20155Indonesia research Collaboration center for biomass and Biorefinery BRIN and Universitas PadjadjaranBandung40600Indonesia Department of Agro-Industrial Technology Universitas PadjadjaranBandung40600Indonesia

Molasses can serve as a natural adhesive for plywood and ***,several disadvantages remain,including lower dimensional stability and low bonding strength compared to other ***,modifications are needed to use molasses as an adhesive for *** research aims to improve bio-based molasses(MO)adhesive for plywood using citric acid(CA)*** addition,this research aims to analyze the effect of adding citric acid and to investigate the optimum hot-pressing temperature to produce the best quality *** the first stage,the molasses and citric acid were combined in a ratio of 100:0,75:25,50:50,25:75,0:100 w/w%.Then,the second stage focuses on analyzing the influences of pressing temperature based on an optimum first *** research demonstrated that the addition of CA altered the gelation time,solid content,viscosity,and pH of the molasses *** addition,the thermal properties of molasses adhesives were changed after mixing with citric *** phenomena indicate changes in characteristics,such as the curing of ***,the characteristics of plywood showed a steady improvement as the CA ratio increased but revealed a significant decline for the 25:75 MO-CA *** raising the pressing temperature from 180℃ to 200℃,the quality of plywood was effectively *** plywood that was bonded using adhesives with a 50:50 MO-CA ratio exhibited superior mechanical properties and improved dimensional stability compared to the plywood bonded solely with ***,the optimal mechanical and physical properties resulted in plywood bonded with a 50:50 MO-CA ratio when subjected to a pressing temperature of 200℃.The Thermal and FTIR measurements revealed that CA established ester bonds with both the MO and wood *** conclusion,the mechanical characteristics of plywood were improved,while maintaining its excellent dimensional stability.

关键词： Citric acid composite molasses pressing temperature plywood

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Preparation and Characterization of Thermoplastic Starch from Sugar Palm (Arenga pinnata) by Extrusion Method

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Journal of Renewable Materials 2023年第4期11卷 1963-1976页

作者： Muhammad Ghozali Yenny Meliana Widya Fatriasari Petar Antov Mochamad Chalid Departement of Metallurgy and Material Universitas IndonesiaDepok16424Indonesia research center for Chemistry National Research and Innovation Agency(BRIN)Kawasan PUSPIPTEK SerpongTangerang Selatan15314Indonesia research center for biomass and bioproducts National Research and Innovation Agency(BRIN)Jl Raya Bogor KM 46 CibinongBogor16911Indonesia Faculty of Forest Industry University of ForestrySofia1797Bulgaria

Sugar palm(Arenga pinnata)starch is considered an important renewable,biodegradable,and eco-friendly polymer,which is derived from agricultural by-products and residues,with great potential for the development of biocomposite *** research was aimed at investigating the development of TPS biocomposites from *** palm starch using an extrusion *** starch,glycerol,and stearic acid were extruded in a twin-screw *** electron microscopy(SEM)analysis of TPS showed that the starch granules were damaged and gelatinized in the extrusion *** density of TPS was 1.3695 g/mL,lower than that of palm starch,and the addition of stearic acid resulted in increased TPS density.X-ray diffraction(XRD)results showed that palm starch had a C-type pattern crystalline *** tensile strength,elongation at break,and modulus of elasticity of TPS were 7.19 MPa,33.95%,and 0.56 GPa,*** addition of stearic acid reduced the tensile strength,elongation at break and modulus of elasticity of *** rheological properties,i.e.,melt flow rate(MFR)and viscosity of TPS,were 7.13 g/10 min and 2482.19 Pa.s,*** presence of stearic acid in TPS resulted in increased MFR and decreased viscosity *** peak gelatinization temperature of *** palm starch was 70°C,while Tg of TPS was 65°*** addition of stearic acid reduced the Tg of *** thermogravimetric analysis(TGA)analysis showed that the addition of glycerol and stearic acid decreased the thermal stability,but extended the temperature range of thermal *** derived from *** palm starch by extrusion method has the potential to be applied in industrial practice as a promising raw material for manufacturing bio-based packaging as a sustainable and green alternative to petroleum-based plastics.

关键词： Arenga pinnata sugar palm starch thermoplastic starch glycerol stearic acid twin-screw extruder biocomposites

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Effects of Microwave Torrefaction with Mg（OH）2 on Characteristics of Bio-oil from Co-pyrolysis of Straw Stalk and Soapstock

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China Petroleum Processing & Petrochemical Technology 2019年第3期21卷 10-16页

作者： Wen Pingwei Zhou Yue Dai Leilei Wang Yunpu Liu Yuhuan Ruan Roger College of Chemistry and Chemical Engineering College of Life ScienceJiangxi Normal UniversityNanchang 330022 Engineering research center for biomass Conversion Ministry of EducationNanchang UniversityNanchang 330047 center for Biorefining and Department of bioproducts and Biosystems Engineering University of MinnesotaMN 55108USA

This study investigated the effects of torrefaction with Mg(OH)2 on the properties of bio-oil formed from the microwave-assisted catalytic fast co-pyrolysis of straw stalk and *** effects of torrefaction temperature and residence time on the yield and composition of bio-oil were *** showed that the torrefaction temperature and residence time remarkably influenced the yield and composition of *** the increase in temperature and time,the bio-oil yield and the proportion of oxygen-containing compounds decreased,while the proportion of aromatic compounds *** the feedstocks were subject to torrefaction reaction for 20 min at 260°C,the proportion of oxygen-containing compounds decreased from 29.89%to 16.49%.Meanwhile,Mg(OH)2 could render the deoxidization function of torrefaction process increasingly *** proportion of the oxygen-containing compounds reached a minimum(14.41%),when the biomass-to-Mg(OH)2 ratio was 1:1.

关键词： microwave torrefaction Mg(OH)2 straw stalk soapstock bio-oil

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Distribution of heavy metals in pig farm biogas residues and the safety and feasibility assessment of biogas fertilizer

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International Journal of Agricultural and Biological Engineering 2013年第4期6卷 35-43页

作者： Ma Jieqiong Zhu Hongguang Fan Min research Institute of Modern Agricultural Science&Engineering Biomass Energy Research CenterTongji UniversityShanghai 200092China

The presence of high levels of heavy metals in anaerobic fermentation residues is a major obstacle to the resource utilization and urgent research for removal of heavy metals in the biogas slurry is *** handling of large-scale residue slurry and safely returning to field urgently needed constructive *** contents of heavy metal elements in the residue of anaerobic digestion processes of the wastewater and waste of the piggery were mainly *** contents of heavy metals in the original fluid and the centrifugal solution were determined in this *** included elements,such as Cu,Zn,Cr,Cd,Pb,As,Ni,Mn,and Se,which were compared with the existing standard including the irrigation water quality standards(GB5084-2005),comprehensive discharge standard of sewage(GB8978-1996)and water-solubility humic acid fertilizer quality standards(NY1106-2010).The preliminary data suggested that both the heavy metals before and after centrifugation were in excess of the standards to some degree and the exceeding standard rate declined significantly after *** absolute contents of heavy metals after centrifugation declined significantly compared with that before *** ratios are 91.8%,73.2%,47.6%,94.5%,93.5%,59.4%,95.8%,100%for Zn,As,Cd,Cr,Cu,Ni,Mn,Pb,respectively.A descriptive statistics as well as a correlational analysis showed that there existed strong correlation among Cu,Pb,and the total suspended solids(TS).Meanwhile,significant correlation was found among TS,Cd,Zn,As,Cr,Ni,and Mn at 0.01 *** data and the analysis above provided the theoretical and experimental support for the removal of heavy mental mainly characterized by the removal of *** to the comparison between contents of heavy mental conversed from large amount nutrients and corresponding standard(NY1110-2006),only as was found beyond *** was feasible to apply biogas residues after centrifugation as water-solubility fertilizer due to the fac

关键词： fluid biogas residue heavy metals distribution correlation fertilization

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