Article
Agricultural Engineering
Bijoy Biswas, Avnish Kumar, Ramandeep Kaur, Bhavya B. Krishna, Thallada Bhaskar
Summary: Carbon-based support catalysts play a crucial role in optimizing the hydrothermal liquefaction of alkali lignin, leading to increased bio-oil yield through efficient depolymerization. The use of ethanol solvent system, higher reaction temperatures, and increased catalyst quantities results in enhanced conversion and selectivity towards vanillin.
BIORESOURCE TECHNOLOGY
(2021)
Article
Engineering, Chemical
Ankit Kumar, Priyanka Yadav, Sivamohan N. Reddy
Summary: In this study, in-situ hydrothermal liquefaction of direct Cu salt solution with lignin and Cu-impregnated lignin was conducted to increase bio-oil yield and produce nanometal carbon hybrids. The performance of both processes was evaluated by varying the temperature (200°C to 320°C) and assessing the bio-oil yields. The maximum bio-oil yields achieved were 28.74% and 24.87% for impregnated and direct processes, respectively, at the optimum condition of 280°C, 15 min, and feed-to-solvent ratio of 1:9, which is nearly double the non-catalytic bio-oil yields (10.16%) under similar operating conditions. XRD analysis confirmed the transition of Cu2+ to Cu+ and Cu, while TEM revealed average Cu particle sizes of 15.9 nm and 62.1 nm in hybrids material obtained from direct Cu effluent and Cu-impregnated lignin, respectively.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Energy & Fuels
Elmeri Pienihakkinen, Christian Lindfors, Taina Ohra-aho, Anja Oasmaa
Summary: This study investigated the removal of alkali from forest residues, eucalyptus residues, and wheat straw through water and dilute nitric acid leaching. The results showed that nitric acid leaching increased the organic liquid yield and reduced the alkali content in eucalyptus residues and wheat straw. However, pyrolysis experiments with acid-leached forest residues were unsuccessful.
Article
Energy & Fuels
Shanshan Shao, Weicheng Wang, Xinyu Yang, Zian Ye, Jiayuan Sun, Xiaohua Li
Summary: A new method for upgrading biomass fast pyrolysis oil using CuO catalysts and methanol as the hydrogen donor was proposed. The carbonyl compounds in the biooil were hydrogenated to synthesize alcohols using a hydrotalcite-like Cu2Al catalyst, achieving a maximum yield of 73.81%. Cu2Al showed excellent performance in bio-oil catalytic transfer hydrogenation (CTH) and can be applied on a large scale with stable alcohol production during repeated use.
Review
Chemistry, Physical
Giuseppe Bagnato, Aimaro Sanna, Emilia Paone, Enrico Catizzone
Summary: Catalytic hydrotreatment is crucial in refining industry, converting biomass into fuels similar to conventional ones to reduce emissions and fossil fuel dependence. Additionally, it can enhance the value of biorefinery by-products.
Article
Green & Sustainable Science & Technology
Yifeng He, Ronghou Liu, Dominic Yellezuome, Wanxi Peng, Meisam Tabatabaei
Summary: This study focuses on the upgrading of biomass-derived bio-oil through catalytic hydrogenation. A new catalyst, Rh/ZrO2, was developed with high deoxygenation ability. Catalytic hydrogenation can remove oxygen from bio-oil and reduce its oxygen content, thereby enhancing its potential as a biofuel.
Article
Engineering, Environmental
Xingjie Guo, Ya Ma, Zuzhi Li, Qian Jiang, Zhicheng Jiang, Bi Shi
Summary: In this study, lignin nanoparticles with an abundance of oxygen-containing groups were successfully prepared from catechyl lignin oligomers extracted from castor seed coats. These nanoparticles acted as a support for stabilizing and reducing Pd2+ ions, which were then used as catalysts for the hydrogenation of lignin-derived aldehydes with high selectivity. The unique self-assembly capacity and lower pi-pi interaction energy of the catechyl-dominant lignin oligomers enabled the production of nanoparticles with a smooth surface. The efficient adsorption and partial reduction of Pd2+ ions on the nanoparticles was attributed to the high content of phenolic hydroxyl groups. The catalytic activity for hydrogenation could be attributed to the interaction preference between the substrate and the nanoparticles. This study has important implications for the lignin biorefining industry.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Agricultural Engineering
Jiapeng Wang, Bo Zhang, Awsan Shujaa Aldeen, Stephen Mwenya, Haoqiang Cheng, Zhixiang Xu, Huiyan Zhang
Summary: This study proposes a method for upgrading biomass pyrolysis products through sodium persulfate pretreatment and fast catalytic pyrolysis. By degrading the biomass structure and changing the composition, the quality and value of the products can be improved.
BIORESOURCE TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Xinyu Yang, Shanshan Shao, Xiaohua Li, Dong Tang
Summary: The catalytic transfer hydrogenation (CTH) of bio-oil over CuO/PC catalyst with the solid residue as the carrier was studied. The influence of carbonization temperature, activation temperature, KOH solution, and metal loading on the catalyst's physicochemical characteristics and catalytic performance were investigated. It was found that CuO/PC produced more alcohols when using less Cu(NO3)2 due to the favorable porous structure. Under the optimized conditions, the catalyst with 50% mesopores achieved a maximum alcohol yield of 81% and showed good recycling performance with a slight decrease of 3% after five cycles. This study enhances the efficient utilization of biomass for alcohol production, aligning with the theme of energy conservation and low-carbon era.
Article
Materials Science, Paper & Wood
Peng Zeng, Ying-Hong Xu, Ming -Fei Li
Summary: Formic acid (FA) was used to reductively depolymerize industrial corncob lignin via the ethanol and Pt/C system. The highest bio-oil yield of 71.4% was achieved at 260 degrees C with an FA/lignin ratio of 8 for 0.5 h. The bio-oil consisted of oligomers (MW within 600 Da) and lignin depolymerized fragments (MW beyond 600 Da). The study emphasizes the importance of reaction temperature in determining the properties of bio-oil and highlights the potential to increase the amount of alkylphenols in bio-oil through appropriate temperature and retention time adjustments. The findings provide a theoretical basis for the future upgrading of bio-oil to biofuels and aromatic chemicals.
Article
Energy & Fuels
Yanfang Zhu, Wenqi Song, Ruijuan Yao, Yuzhen Zhao, Guiyang Xu
Summary: Catalytic hydro-pyrolysis of lignin using ZSM-5 catalysts was studied, and it was found that catalytic pyrolysis increased the bio-oil yield and produced more aromatic hydrocarbon compounds. The presence of catalysts and hydrogen showed synergistic effects on the hydrogenation of bio-oil.
JOURNAL OF THE ENERGY INSTITUTE
(2022)
Article
Green & Sustainable Science & Technology
Yu-Hong Kang, Xian-Yong Wei, Xiao-Qi Zhang, Yan-Jun Li, Guang-Hui Liu, Xiang-Rong Ma, Xiao Li, Hong-Cun Bai, Zhen-Ni Li, Hai-Jun Yan, Zhi-Min Zong
Summary: Through catalytic hydroconversion over a supported nickel catalyst, compounds in straw-derived bio-oil were converted into chain alkanes and cycloalkanes; Uniformly dispersed nickel nanoparticles and strong Lewis acid sites in Ni-11%/MZY play crucial roles in removing heteroatoms and hydrogenating aromatic rings; The catalyst exhibits good stability and activity for the catalytic hydroconversion of benzyloxybenzene after being recycled multiple times.
Article
Chemistry, Applied
Yao-Bing Huang, Ji-Long Zhang, Xuan Zhang, Xue Luan, Hao-Ze Chen, Bin Hu, Li Zhao, Yu-Long Wu, Qiang Lu
Summary: This study reports the use of non-precious skeletal CuZnAl catalysts for the depolymerization of lignin dimers and real organosolv lignin through catalytic transfer hydrogenation (CTH) method. The results show that under mild reaction conditions, typical lignin dimers and birch organosolv lignin can be effectively converted into aromatics and alcohols. It is found that the water brought by the wet catalyst promotes the cleavage of the C-O bonds. This study provides an economical and environmentally-friendly method for the selective cleavage of lignin into value-added chemicals, and has great potential for industrial applications.
FUEL PROCESSING TECHNOLOGY
(2022)
Review
Chemistry, Multidisciplinary
Guanyi Chen, Lan Liang, Ning Li, Xukai Lu, Beibei Yan, Zhanjun Cheng
Summary: Bio-oil, as an alternative and promising green energy source, needs to be upgraded through the electrocatalytic hydrogenation (ECH) process due to its nature issues. ECH integrates the advantages of mild operating conditions, no petrochemically derived hydrogen and good controllability, but still faces challenges in determining the dominant steps and exploring efficient electrocatalysts.
Review
Chemistry, Multidisciplinary
Iris K. M. Yu
Summary: Biorefinery plays a key role in achieving carbon neutrality in 30-40 years by transforming biomass into renewable energy and materials. Metal-reactant interactions are fundamental determinants of reaction rate and product distribution in the reductive upgrading of bio-based aromatic compounds.
Article
Nanoscience & Nanotechnology
Xingwang Zhou, Jun Yao, Ming Yang, Jiangquan Ma, Qingwei Zhou, Ershen Ou, Zhen Zhang, Xueni Sun
Article
Nanoscience & Nanotechnology
Yongwei Yu, Qing Yang, Jiangquan Ma, Wenliang Sun, Chong Yin, Xiazhang Li, Jun Guo, Qingyan Jiang, Zhiyuan Lu
Article
Engineering, Chemical
Ming Zhu, Xiaoqiang Fan, Jiangquan Ma, Nan Li, Xiaoxin Gao
Summary: This study proposed a systematic design and optimization method for separation processes of the vinyl acetate/acetic acid/acetic anhydride ternary system. By minimizing the total annual cost and CO2 emission, the optimal separation process was determined. The mechanical vapor recompression heat pump distillation processes showed better performance than conventional distillation processes, with the one incorporating a heat exchange network achieving significant cost and CO2 emission savings.
ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Wei Zhan, Nan Li, Shixiang Zuo, Zhimin Guo, Chenghong Qiang, Zhengping Li, Jiangquan Ma
Summary: In this study, cubic RuSe2 electrocatalysts with varying 1T phase ratios and crystallinities were developed using a fast and efficient synthesis method. The RuSe2-500 catalyst exhibited outstanding performance with a small overpotential and Tafel slope, attributed to its high crystallinity and appropriate 1T phase content. Additionally, RuSe2-500 showed the lowest charge transfer resistance due to its abundant active centers and excellent conductivity from the 1T phase, benefiting the hydrogen evolution reaction kinetics and catalytic performance.
Article
Materials Science, Ceramics
Minghao Shi, Nan Li, Shixiang Zuo, Guifang Sun, Wenjing Shen, Mianmian Wu, Qingfei Li, Jiangquan Ma
Summary: This study developed NiS/CoNC electrocatalysts with excellent oxygen evolution reaction (OER) performance by pyrolysis and sulfidation of NiCo-MOF nanosheets on nickel foam. The construction of easily accessible hydroxide ion adsorption sites effectively accelerated the kinetics of the OER. The outstanding OER function is attributed to the surface reconstruction and activation of NiS/CoNC catalyst, resulting in the generation of NiOOH/CoOOH active component and the excellent charge transfer capability of the NiS component. This work offers a scheme to construct electrocatalysts derived from MOF with excellent OER performance.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Mianmian Wu, Nan Li, Shixiang Zuo, Wenjing Shen, Guifang Sun, Qingfei Li, Minghao Shi, Jiangquan Ma
Summary: Piezocatalysis is a promising technology that converts mechanical energy into chemical energy to address environmental pollution. This study investigates the role of phase engineering in piezocatalysis by constructing MoSe2 nanosheets with different IT phase percentages. The results show that phase engineering can increase the active sites, improve conductivity, and inhibit electron-hole recombination, leading to higher catalytic efficiency.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Nan Li, Minghao Shi, Wei Zhan, Wenjing Shen, Mianmian Wu, Guifang Sun, Qingfei Li, Jiangquan Ma
Summary: Researchers prepared a novel RuSe2/Co-N-C electrocatalyst with uniform distribution of RuSe2 nanospheres on Co-N-C nanosheets and two-electron modulation, significantly improving the performance of the hydrogen evolution reaction.
Article
Materials Science, Multidisciplinary
Wenjing Shen, Nan Li, Minghao Shi, Mianmian Wu, Guifang Sun, Qingfei Li, Jiangquan Ma
Summary: By loading RuSe2 cocatalyst on Black-TiO2 to form RuSe2/Black-TiO2 heterostructure, the degradation rate of rhodamine B has been significantly improved, with advantages of narrow band gap, more active sites, and better conductivity.
Article
Chemistry, Inorganic & Nuclear
Nan Li, Minghao Shi, Guifang Sun, Mianmian Wu, Qingfei Li, Wenjing Shen, Jiangquan Ma
Summary: In this study, a novel Z-scheme heterojunction CdIn2S4/Bi2WO6 piezo-photocatalyst was designed and demonstrated to exhibit better performance than pure CdIn2S4 and Bi2WO6 in terms of piezo-photocatalysis under sunlight and ultrasound. This research provides an efficient approach for constructing highly efficient piezo-photocatalysts for converting solar and mechanical vibration energies.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Applied
Nan Li, Wenhua Fu, Guifang Sun, Minghao Shi, Mianmian Wu, Wenjing Shen, Qingfei Li, Jiangquan Ma
Summary: A novel Z-scheme ZnSnO3/Bi2WO6 (ZSO/BWO) piezo-photocatalyst with a synergistic polarized electric field was synthesized. The optimized 1% ZSO/BWO showed exceptional piezo-photodegradation efficiency and mineralization of diclofenac (DCF) under combined ultrasound and light, surpassing the results using ultrasound or light alone. The enhanced activity of the ZSO/BWO composite was attributed to increased absorption, improved charge transfer, Z-scheme heterojunction, and strong surface contact between ZSO and BWO. The Z-scheme mechanism of ZSO/BWO composites was studied and confirmed using radical capture and electron spin resonance technology. The intermediates and possible degradation pathways of DCF on ZSO/BWO composites were analyzed by liquid chromatography-mass spectrometry and DFT, providing insights into the mechanisms of photocatalytic degradation.
APPLIED ORGANOMETALLIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Wenhua Fu, Nan Li, Minghao Shi, Mianmian Wu, Guifang Sun, Wenjing Shen, Qingfei Li, Jiangquan Ma
Summary: In this study, the electrocatalytic performance of RuSe2-CoTe/NC electrode has been significantly enhanced by optimizing the electronic structure and local electron transfer. The electrode exhibits better hydrogen evolution reaction kinetics with a smaller overpotential compared to RuSe2/NF and CoTe/NC electrodes. Moreover, it demonstrates good stability after long-term stability testing.
Article
Chemistry, Inorganic & Nuclear
Qingfei Li, Nan Li, Mianmian Wu, Guifang Sun, Wenjing Shen, Minghao Shi, Jiangquan Ma
Summary: In this study, novel CoNi2S4/C3N4 nanowires on a nickel foam electrode were constructed as a bifunctional electrocatalyst for alkaline water splitting through a two-step hydrothermal and thermal annealing process. The prepared CoNi2S4/C3N4 electrocatalyst exhibited superior HER and OER activities in a 1 M KOH electrolyte, with much smaller overpotentials compared to other materials. It also showed excellent stability during a 20-hour stability test. The unique tentacle-like nanowire nanostructure of CoNi2S4/C3N4 minimized interfacial resistance and provided abundant channels for electrocatalysis.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Minghao Shi, Nan Li, Wenhua Fu, Guifang Sun, Mianmian Wu, Qingfei Li, Wenjing Shen, Jiangquan Ma
Summary: Currently, nickel sulfides are widely used in the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). This study designs a nitrogen-doped carbon-coated CeO2-NiS heterogeneous interface catalyst to improve the HER and OER activity by constructing a rational heterogeneous interface.
Article
Chemistry, Inorganic & Nuclear
Mianmian Wu, Nan Li, Minghao Shi, Guifang Sun, Wenjing Shen, Qingfei Li, Jiangquan Ma
Summary: Efficient spatial charge separation is crucial for improving photocatalytic performance. In this study, 1T/2H MS/BOC and 2H MS/BOC piezo-photocatalysts were synthesized. The combination of piezoelectric catalysis and photocatalysis led to a highly active piezo-photocatalytic process. The optimized 1T/2H MS/BOC catalyst showed superior DCF degradation and H-2 evolution activity under ultrasound and light. The improvement in performance can be attributed to the polarization electric field, abundance of active sites, and advantageous band structure between BiOCl and 1T/2H MoSe2.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Mianmian Wu, Nan Li, Minghao Shi, Guifang Sun, Wenjing Shen, Qingfei Li, Jiangquan Ma
Summary: Efficient spatial charge separation plays a crucial role in improving the photocatalytic performance. By combining piezoelectric catalysis and photocatalysis, a highly active piezo-photocatalytic process is realized. The optimal 1T/2H MS/BOC piezo-photocatalyst displays superior DCF degradation and H-2 evolution activity under the combined action of ultrasound and light.
DALTON TRANSACTIONS
(2023)
