FUEL
·
2022
·
IF 8.035
Puxiang Yan,Haiyong Wang,Yuhe Liao,Pengyao Sun,Chenguang Wang
Catalytic valorization of biomass into chemicals and fuels plays a key role in order to achieve net-zero greenhouse gas emissions. Herein, a series of hierarchical ZSM-5 zeolites were synthesized by the post-treatment method to transform furfural alcohol (FAL) to levulinic acid (LA). ZSM-5 obtained from tandem alkaline treatment (0.2 M NaOH) and acid washing (0.1 M HCl), denoted as ZSM-5-OH 0.2 -H, exhibited the highest activity, affording 76.2% LA yield in 9:1 acetone–water mixed solvents at 393 K for 0.5 h. The enhanced adsorption capacity and acid accessibility of FAL on zeolite mediated by the introduction of mesopores, as well as the reduced secondary reactions of the generated LA due to few Al atoms in straight and sinusoidal channels (as confirmed by UV–vis diffuse reflectance), were responsible for the outstanding catalytic performance of ZSM-5-OH 0.2 -H. The structure–activity relationship revealed that regulating the porous structure and Al distribution of ZSM-5 was an effective strategy to enhance its hydrolytic performance of FAL to LA. Moreover, ZSM-5-OH 0.2 -H could be reused for three reaction cycles without significant loss in catalytic activity.
研究领域:
化学工程
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催化
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生物质转化
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可持续化学
✓ 已验证
DOI
高影响因子
Journal of Cleaner Production
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2017
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IF 5.715
Leichang Cao,Gang Luo,Daniel C.W. Tsang,Huihui Chen,Shicheng Zhang,Jianmin Chen
As a typical lignocellulosic biomass , abundant amount of green landscaping waste can be used as low-cost feedstock to produce value-added chemicals. This work developed a novel process to obtain industrially important cellulose acetate from green landscaping waste after separation of hemicellulose as a substrate rich in monomeric xylose . Sixteen samples of selected green waste were pretreated with diluted acid at moderate temperatures. Afterwards, the residues were treated with acetic anhydride and a small amount of sulfuric acid as catalyst to make cellulose acetate. The quantity and quality of cellulose acetate were analyzed by Fourier Transform Infrared Spectroscopy (FT-IR), Nuclear Magnetic Resonance ( 1 H NMR), and Gel Chromatography (GPC). The activation mechanisms of the diluted-phosphoric-acid pretreatment on yields and quality of cellulose acetate were also investigated using Thermogravimetric Analyzer (TGA) and Scanning Electron Microscope (SEM). Without the pretreatment, the yields of cellulose acetate from green landscaping waste ranged from 4.0% to 8.6%. After the pretreatment the mean yield of cellulose acetate from all sixteen green waste significantly increased to approximately 35%, illustrating the high efficiency and wide applicability of our proposed method.
研究领域:
生物化学
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材料科学
✓ 已验证
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
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2024
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IF 5.6
Junhong Wang,Dongming Lan,Junping Zhuang,Yonghua Wang
Fruit shell biomass is an agricultural waste that could be valorised into various value-added chemicals. However, the intertwined structure between lignin and holocellulose limits free sugar generation for further fermentation, requiring efficient pretreatment for selective delignification. We pretreated Camellia oleifera shell by ethanolamine-based solvents (binary deep eutectic solvents and single ethanolamine or its derivatives), and compared pretreatment effectiveness of these solvents. Single ethanolamine was the best among ethanolamine-based solvents, indicating the unnecessity of deep eutectic solvent synthesis. Furthermore, structural characterization confirms that ethanolamine could effectively deconstruct Camellia oleifera shell with the highest delignification (76.46%) and sugar yields (83.73% for glucose and 66.87% for xylose) at 130 °C for 3 h. Additionally, correlation analysis suggests that alkalinity and proton dissociation capacity together determined the delignification capacity of ethanolamine. Our findings serve a potential solution to valorise the waste fruit shell lignocellulose resources.
研究领域:
生物技术
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化学工程
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农业科学
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2021
·Vol. 12
·期 1
·1-11
·
IF 14.919
Wang Jinling,Dai Xingchao,Wang Hualin,Liu Honglai,Rabeah Jabor,Brückner Angelika,Shi Feng,Gong Ming,Yang Xuejing
Diminishing fossil fuel resources and calls for sustainability are driving the urgent need for efficient valorization of renewable resources with high atom efficiency. Inspired from the natural goethite mineral with Mn paragenesis, we develop cost-effective MnO 2 /goethite catalysts for the efficient valorization of dihydroxyacetone, an important biomass-based platform molecule, into value-added glycolic acid and formic acid with 83.2% and 93.4% yields. The DHA substrates first undergo C−C cleavage to selectively form glycolic acid and hydroxymethyl (·CH 2 OH) radicals, which are further oxidized into formic acid. The kinetic and isotopic labeling experiments reveal that the catalase-like activity of MnO 2 turns the oxidative radicals into oxygen, which then switches towards a hydroxymethyl peroxide (HMOO) pathway for formic acid generation and prevents formic acid over-oxidation. This nature-inspired catalyst design not only significantly improves the carbon efficiency to 86.6%, but also enhances the oxygen atom utilization efficiency from 11.2% to 46.6%, indicating a promising biomass valorization process.
研究领域:
化学工程
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催化
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可持续化学
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生物质转化
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CELLULOSE
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2022
·Vol. 30
·期 3
·1503-1515
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IF 6.123
Liu Shiqi,Ji Hairui
In this study, a strategy of corncob valorization was proposed. Corncob was first pretreated with a recyclable acid hydrotrope ( p -TsOH, aqueous solution) to selectively remove lignin and hemicelluloses. After pretreatment, the collected liquid phase was diluted with deionized water to precipitate lignin. The hemicelluloses degradation products, mainly pentose, in the resulting acid liquor were converted into furfural with a yield of 53.65% without adding any catalyst. The collected lignin was depolymerized to phenolic monomers with a yield of 68.00% via a hydrodeoxygenation process. The pretreated cellulose-rich solid was subjected to 10 s ultrasonic treatment to form pulp and subsequently used for papermaking by blending it with commercial softwood pulp. With a corncob pulp addition of 20%, the tensile index and ring crush index of hand sheets increased by 10.62% and 5.05%, respectively, compared with those containing 100% softwood pulp. Therefore, this study provided a strategy for corncob valorization toward multipurpose fractionation: furfural, phenolic monomers, and pulp, reaching a comprehensive utilization of corncob. Graphical abstract
研究领域:
化学工程
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生物技术
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材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF CATALYSIS
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2024
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IF 15.7
Jiafa Chen,Peng Bai,Shibo Yuan,Yi He,Zifan Niu,Yicheng Zhao,Yongdan Li
Designing highly efficient photocatalyst for the valorization of CO 2 is an ideal strategy to reduce greenhouse gas emissions and utilize solar energy. In this study, a S-scheme heterojunction photocatalyst is fabricated by solvothermal impregnation of ZnO on W 18 O 49 for photocatalytic CO 2 N -formylation of aniline. The localized surface plasmon resonance effect of W 18 O 49 improves the absorption capacity for long-wave light significantly, and the hot electrons generated in W 18 O 49 with a high energy can migrate to the conduction band of ZnO and thus enhance the photocatalytic reduction ability. Meanwhile, the S-scheme heterojunction facilitates the separation of photoinduced charge carriers and preserves the redox ability of W 18 O 49 /ZnO composite photocatalyst. The conversion of aniline reaches 99.1% after 5 h reaction under visible light irradiation at room temperature with an N -formylaniline selectivity of 100%. A possible photocatalytic reaction mechanism is proposed. This study paves a promising way for the design of highly efficient photocatalyst and the sustainable utilization of CO 2 .
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
DOI
高影响因子
APPLIED ENERGY
·
2023
·
IF 11.2
Ali Reza Kamali,Siyuan Li
Polyethylene terephthalate (PET) is one of the most widely used plastic materials, and therefore, its clean, efficient and low-cost valorization into high-value materials is of substantial economic and environmental interest. Here, for the first time, the utilization of molten salts for the facile, scalable and fast depolymerization of PET into terephthalic acid (C 8 H 6 O 4 ) is reported. It is asserted that the simple heat-treatment of PET in molten KCl-LiCl containing SnCl 2 in air leads to the green preparation of nanocrystalline terephthalic acid embedded with SnO 2 nanocrystals, with an excellent performance as the anode of lithium ion batteries (LIBs). The structural, morphological, thermal, surface, electrical and electrochemical characteristics of plastic-derived nanocomposites are evaluated by various techniques. The sample prepared at 500 °C (PDN-500) contains 28.3 wt% SnO 2 , and exhibits an enhanced bulk electrical conductivity of 447.3 S m −1 , and an excellent Li-ion storage capacity of 498 mAh g -1 after 500 cycles, corresponding to 1657 mAh per gram of SnO 2 . This performance is accompanied by an enhanced lithium ions diffusion coefficient of 8.51 × 10 −10 cm 2 s −1 recorded after 300 cycles, and a capacitive storage contribution of above 42 %. The sustainability of the presented molten salt approach is discussed from two complementary points of view, in terms of the clean conversion of waste plastics into high-performance anode materials for LIBs, as well as the facile and scalable depolymerization of PET, reducing the waste plastics in our environment. This article proposes an efficient and green strategy for the valorization of waste plastics into nanostructured SnO 2 @terephthalic acid for energy storage applications .
研究领域:
材料科学
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能源存储
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环境科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Yunxiao Zheng,Xiaohui Wu,Tao Zhou,Chuan Yi,Wei Xiang,Mingjie Huang
Biochar-enabled catalytic polymerization in advanced oxidation processes (AOPs) offers a sustainable route for pollutant removal. However, the mechanistic link between lignocellulosic biopolymer composition (lignin, cellulose, hemicellulose) and polymerization capacity of biochar remains unexplored. Herein, five biochars with distinct structures and surface chemistries were synthesized from representative biomass (walnut shell, corn stalks, reed straw, pine wood chips, bamboo powder). These biochars predominantly activated peroxymonosulfate (PMS) through non-radical pathways, specifically electron-transfer pathway (ETP) and singlet oxygen ( 1 O 2 ) mechanisms, to drive pollutant polymerization into oligomeric dimers and trimers. Crucially, clear correlations emerged between the biomass composition and the resulting biochar functionality. Pearson analysis confirmed that precursors rich in lignin yielded biochars enriched with persistent free radicals (PFRs) and oxygen functional groups (OFGs), which were key to promoting the generation of active species and facilitating their direct participation in phenol C-C/C-O coupling reactions. Consequently, biochars derived from lignin-rich precursors achieved a polymerization capacity of 16.23 mg/g, surpassing that of lignin-poor biochars (2.42 mg/g) by 6.7-fold. This work reveals lignin content as a critical design parameter for developing highly efficient polymerization-based decontamination systems.
研究领域:
环境科学
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材料工程
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化学工程
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
Engineering
·
2024
·
IF 10.1
Jinjing Huang,Xia Liu,Kaixing Fu,Shengyun Yang,Shiqing Zhou,Jinming Luo
The valorization of Chinese medicine residues (CMRs) into high-value-added products, such as microcrystalline cellulose (MCC), has garnered significant interest in the current post-pandemic era, particularly in regions where Chinese medicine (CM) is widely utilized (i.e., Southeast Asia). In this study, we propose a facile and economical protocol for selectively extracting MCC from CMRs via one-step direct peroxymonosulfate (PMS) oxidation without the need for intricate steps. Importantly, our proposed protocol has been verified to be versatile and can be applied to various solid waste sources rich in cellulose, with an average extraction rate of 75%. Analysis using the Fukui index revealed that the β-O-4 bond, the aromatic ring in lignin, specific O sites in hemicellulose, and the amorphous region of cellulose are more susceptible to electrophilic attack by PMS than to reactions involving HO • , SO 4 •− , or 1 O 2 . Leveraging this distinct mechanism, the extracted MCC demonstrated ultrahigh purity (∼95%) and crystallinity (∼85.36%). Overall, our work involves transforming solid waste into high-value products through the provision of a technical solution, with the potential for onsite application. This represents a significant advancement to the valorization of CMRs, particularly in providing theoretical guidance for accelerating the recycling of waste materials.
研究领域:
环境科学
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材料科学
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化学工程
·
废物管理
·
药学
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-11
·
IF 14.7
Liu Shengqin,Jin Yangxin,Huang Shuquan,Zhu Qi,Shao Shan,Lam Jason Chun-Ho
The catalytic valorisation of biomass to afford synthetically useful small molecules is essential for sustainable biorefinery processes. Herein, we present a mild cascaded electrochemical protocol for converting furoic acid, a common biomass-derived feedstock, into a versatile platform chemical, gamma-butyrolactone. In the platinum(+)|nickel(−) electrode paired undivided cell, furoic acid is electrochemically oxidised with 84.2% selectivity to 2(5 H )-furanone, the olefin of which is then hydrogenated to yield gamma-butyrolactone with 98.5% selectivity. The final gamma-butyrolactone yield is 69.1% with 38.3% Faradaic efficiency and 80.1% carbon balance when the reaction is performed with 100 mM furoic acid at 80 °C at +2.0 V Ag/AgCl . Mechanistic investigation revealed the critical temperature and electrolyte pH conditions that maximise the production and protection of the key intermediate, furan radical, promoting its transition to 2(5 H )-furanone rather than self-polymerising. The reaction is scalable, as 2.1 g of 98.1% pure gamma-butyrolactone is isolated through a simple solvent extraction.
研究领域:
化学工程
·
电化学
·
可持续化学
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生物质转化
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ChemSusChem
·
2025
·
IF 6.6
Muhammad Wasim,Muhammad Tayyab,Ali Arbab,Abdul Zeeshan Khan,Zulakha Zafar,Muhammad Arshad,Rida Javed,Maira Liaqat,Xian-Zhu Fu,Jing-Li Luo
Developing cost-effective, eco-friendly electrocatalysts with strong electrochemical performance is essential for advancing in water electrolysis. Noble metal-based catalysts offer excellent activity, but due to less availability and more expenses leads to an urgent demand for efficient, affordable, and earth-abundant alternatives. In this study, a bimetallic foam architecture (CuF@Ni) was fabricated by electrodeposition of Ni on CuF. This structure acts as both a conductive support and an active electrocatalyst. The synthesized CuF@Ni demonstrated superior HER activity and overpotential of 0.18 V at 50 mA/cm², while for MOR overpotential was observed 0.14 V at 50 mA/cm². CuF@Ni electrocatalytic electrode achieved a Faradaic efficiency ~100 %, with a formate (HCOO-) concentration of 7.9 mM during 150 C charge transfer. In a co-generation system integrating HER and MOR the onset potential was observed as lower 0.4 V and CuF@Ni required only 0.92 V to sustain the current density of 50 mA/cm², demonstrating significant energy savings. In addition, device consumes less power than theoretical water electrolysis under higher current density. Long-term stability tests confirmed minimal degradation under the harsh conditions. This study highlights CuF@Ni as a promising dual-functional electrocatalyst for efficient energy conversion for future renewable energy applications.
研究领域:
能量转换
·
电化学
·
材料科学
·
催化
·
可再生能源
·
纳米技术
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Catalysis
·
2025
·
IF 13.1
Xin Lin,Jian Lin,Zhukun Zhang,Quan Yao,Dechao Wang,Haihan Huang,Kaiyue Wu,Jianchun Jiang,Zhifeng Zheng
Hydrogen and bioderived fuels are central for decarbonizing energy systems, yet catalyst deactivation and inefficient synthesis methods remain major bottlenecks. Herein, we report a rapid strategy to synthesize graphite-encapsulated NiMn heterostructured nanoparticles via a rapid high-temperature carbothermal shock (HCS). Structural characterization reveals a dual-phase architecture comprising Mn-incorporated face-centered cubic Ni (fcc-Ni) and MnO phase, synergistically enhancing bond cleavage within complex reactions. The optimized catalyst achieves an 18.7-fold increase in hydrogen yield (8.4 ± 0.3 mmol/gbiomass-daf, 40.3 ± 0.9 vol %) compared to noncatalytic pyrolysis, while simultaneously enabling complete conversion of various lipid feedstocks, particularly fatty acid methyl ester (FAME), into biojet and diesel-range hydrocarbons via dominant decarboxylation (DCO2) pathways. The catalyst maintains over 80% efficiency over seven cycles, and its catalytic activity can be effectively restored through a rapid shock-based regeneration strategy. Mechanistic studies further reveal that the heterostructure design and shell structure modulation enhance bond activation and promote reaction kinetics. This work demonstrates the effectiveness of HCS as a platform for engineering Ni-based nanomaterials, potentially bridging biomass-to-hydrogen conversion with biofuel upgrading for integrated biorefineries.
研究领域:
能源化学
·
催化
·
纳米材料
·
可再生能源
·
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）