Article
Chemistry, Physical
Zhenping Cai, Yongxin Ding, Jiayin Zhang, Panjie Yu, Yongde Ma, Yanning Cao, Ying Zheng, Kuan Huang, Lilong Jiang
Summary: In this study, oil-soluble Mo-based ionic liquids were used as precursors to produce MoS2 catalysts for the hydroconversion of biolipids. The in situ generated MoS2 catalysts showed excellent activity in converting methyl palmitate and hexadecane to biodiesel. The structures of the catalysts were characterized, and the hydroconversion kinetics and pathways were analyzed. High conversions of feeds and selectivities of HDO products were achieved in the hydroconversion of methyl palmitate and palm oil under solvent-free condition.
JOURNAL OF CATALYSIS
(2023)
Article
Chemistry, Physical
Liang Hong, Jing Yang, Yongzheng Li, Xin Gao, Wuling Song, Hongxi Zhang
Summary: In this study, an acid-modified vermiculite (AVM)-supported Pd-Ni bimetallic catalyst was investigated for the hydrodeoxygenation of bio-oil and its model compounds. The catalyst efficiently hydrodeoxygenated phenol, reaching 94% conversion at 0.5% Ni loading and temperatures beyond 513 K. The synergistic effects between the active component and the carrier were found to be the main reason for the catalytic activity, with significant influences of Ni loading and temperature on the hydrogenation of phenol.
Article
Chemistry, Physical
Xiangze Du, Xiaomei Lei, Linyuan Zhou, Yong Peng, Yan Zeng, Huiru Yang, Dan Li, Changwei Hu, Hermenegildo Garcia
Summary: This study discovers that bimetallic Ni-Mo nitrides can be obtained by a non-nitridation method and serve as efficient catalysts for the hydrodeoxygenation reaction in the production of liquid fuels from biomass. The Ni3Mo3N samples show high selectivity and activity in the hydrodeoxygenation of palmitic acid, and they can be recycled with slight decay in catalytic activity.
Article
Energy & Fuels
Tao Liu, Zhipeng Tian, Weijie Zhang, Bowen Luo, Libin Lei, Chao Wang, Jianping Liu, Riyang Shu, Ying Chen
Summary: In this study, the controllable selective hydrodeoxygenation (HDO) of phenolic compounds derived from pyrolysis lignin-oil to cyclohexanol using a RuFe bimetallic catalyst was investigated. The optimized 2Ru2.5Fe/Al2O3-EG catalyst exhibited excellent catalytic performance, achieving 99.99% guaiacol conversion and 81.35% cyclohexanol selectivity. The intimate contact between Ru and Fe2O3 species in the catalyst was found to improve the cyclohexanol selectivity.
Article
Energy & Fuels
Cong Yu, Shitao Yu, Lu Li, Shangda Li
Summary: A novel Mo-based catalyst with high stability was developed using transition metal dopants. The CuMo/C catalyst showed excellent activity and stability in the hydrogenation of methyl oleate to produce diesel-like hydrocarbons, by selectively adsorbing carbon-oxygen bonds and avoiding the hydrogenation of C=C bonds through oxygen vacancies.
Article
Green & Sustainable Science & Technology
Thikhamporn Burimsitthigul, Boonyawan Yoosuk, Chawalit Ngamcharussrivichai, Pattarapan Prasassarakich
Summary: The study investigated the hydrodeoxygenation of palm oil catalyzed by unsupported nickel-molybdenum sulfide, showing that longer reaction time and higher temperature enhanced n-alkane yield. The catalyst with a structure consisting of weakly coupled layers, rim sites, and Ni edges efficiently catalyzed the reaction and could be reused for multiple cycles.
Article
Energy & Fuels
Mingxing Zhao, Jun Hu, Ping Lu, Shiliang Wu, Chao Liu, Yahui Sun
Summary: Efficient conversion of lignin-derived bio-oils to cycloalkanes was achieved using bifunctional RuCoWx/NC catalyst prepared by in situ pyrolysis method. The catalyst exhibited excellent hydrodeoxygenation (HDO) activity towards 4-propylguaiacol and rice husk bio-oil, leading to high yields of propylcyclohexane and hydrocarbons, respectively. The stability of RuCoW0.03/NC catalyst was also confirmed after four cycles.
Article
Nanoscience & Nanotechnology
Shenglan He, Yue Liu, Hongjian Li, Qianbao Wu, Dongsheng Ma, Daojiang Gao, Jian Bi, Yaoyue Yang, Chunhua Cui
Summary: A highly active ethanol oxidation electrocatalyst was developed by decorating Mo sites on Pd nanosheets, increasing current density and achieving nearly 100% faradic efficiency for ethanol-to-acetate conversion without CO2 generation. This selective and CO2-free conversion offers a promising strategy for alcohol fuel cells to provide comparable current density and for the selective oxidation of biofuels to useful acetate intermediates.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Mingrui Li, Kowsalya D. Rasamani, Yugang Sun
Summary: Utilizing highly dispersed Pd nanoparticles attached to the surface of silica nanospheres for photocatalytic hydrodeoxygenation (HDO) of vanillin enables efficient deep HDO yield under mild reaction conditions. The reaction kinetics of the photocatalytic HDO process is orders of magnitude higher compared to the catalytic HDO process in the dark.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Energy & Fuels
Zhuoyou Gao, Zhijun Zhou, Mengying Wang, Ningzhao Shang, Wei Gao, Xiang Cheng, Shutao Gao, Yongjun Gao, Chun Wang
Summary: This study presents an efficient method to fabricate highly dispersed Pd-PTA/ZrO2 catalysts and demonstrates their superior catalytic performance for the hydrodeoxygenation of lignin-derivatives under mild conditions.
Article
Chemistry, Multidisciplinary
Junifa Layla Sihombing, Herlinawati Herlinawati, Ahmad Nasir Pulungan, Lisnawaty Simatupang, Rahayu Rahayu, Ary Anggara Wibowo
Summary: Bio-oil from biomass pyrolysis has potential as a sustainable biofuel and high-value-added chemical. However, it suffers from corrosiveness, low HHV, and instability due to high acid, water, and oxygenate content. This study investigates the refining of bio-oil using natural zeolite-based transition metal oxide through the hydrodeoxygenation method. The results show improved physicochemical properties and high catalytic performance, indicating its potential for better and low-cost biofuel production.
ARABIAN JOURNAL OF CHEMISTRY
(2023)
Article
Engineering, Chemical
Aqsha Aqsha, Lakshmi Katta, Mansour M. Tijani, Camilla F. de Oliveira, Nader Mahinpey
Summary: The catalytic hydrodeoxygenation (HDO) of a model component (anisole) of lignocellulose biomass over Mo- and V-promoted Ni deposited on titania support was investigated, revealing high activity and activation energy values for the reactions. The presence of metals and acidic sites significantly influenced the HDO activity of the catalysts, with Ni-Mo/TiO2 showing higher activity potentially due to a high Ni/Ti surface atomic ratio. Major products of the reactions were phenol, with benzene and cyclohexane also observed in substantial amounts.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2021)
Article
Energy & Fuels
Yujun Han, Lin Ai, Yinteng Shi, Jixiang Chen
Summary: SiO2 supported Ni3Ga intermetallic compounds were prepared with different nominal Ni contents using impregnation-reduction method and showed high reactivity in the hydrodeoxygenation of anisole. The Ni3Ga particles size did not increase significantly with increasing Ni content, leading to a structure-sensitive reaction with optimal performance observed at 15%Ni3Ga/SiO2.
JOURNAL OF THE ENERGY INSTITUTE
(2021)
Article
Green & Sustainable Science & Technology
Majid Saidi, Maryam Safaripour
Summary: Novel nickel-molybdenum nanoparticles catalysts stabilized with ether-functionalized ionic polymer (Ni-Mo NPs@IP) were successfully synthesized and demonstrated superior catalytic activity in converting phenolic compounds into deoxygenated fuel-grade products. The removal of oxygen was more pronounced at higher temperatures, pressures, and longer reaction times.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Agricultural Engineering
Chengzhi He, Tao Ruan, Xinping Ouyang, Yuqiao Ma, Yong Qian, Xueqing Qiu
Summary: The efficient conversion of renewable lignin bio-oil into cyclohexanol and its derivatives is crucial for reducing reliance on fossil resources. A bimetallic Ni-Co catalyst supported on MgO-modified γ-Al2O3 was developed to selectively hydrodeoxygenate monophenolics from lignin bio-oil. The catalyst demonstrated improved catalytic activity and selectivity, making it a promising approach for the valorization of lignin bio-oil. Rating: 8/10.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Chemistry, Physical
Pengfei Wu, Tingting You, Qingyuan Ren, Hongyan Xi, Qingqing Liu, Fengjuan Qin, Hongfei Gu, Yu Wang, Wensheng Yan, Yukun Gao, Wenxing Chen, Penggang Yin
Summary: Interface regulation plays a key role in the electrochemical performance for biosensors. In this study, a strongly coupled 1T phase molybdenum sulfide (1T-MoS2)/MXene hybrid was designed through interface electronic engineering to construct an efficient electrocatalytic biomimetic sensor. Experimental and theoretical results showed that the modified electrode exhibited ultra high sensitivity and low detection limit.
Article
Engineering, Environmental
Lili Zhang, Yuanting Lei, Wenjing Xu, Dan Wang, Yafei Zhao, Wenxing Chen, Xu Xiang, Xinchang Pang, Bing Zhang, Huishan Shang
Summary: In this study, a highly active and durable N-CoP/CeO2 nanowire heterostructure electrocatalyst was developed, showing excellent catalytic activity for both oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). The N-CoP/CeO2 catalyst exhibited low overpotentials of 215 and 74 mV at 10 mA cm-2 in 1.0 M KOH. The assembled water electrolyzer with N-CoP/CeO2 displayed super stability, maintaining 95.9% catalytic activity over 42 days at 1.52 V@10 mA cm-2. Theoretical calculations revealed that the metallic heterostructure interfaces of N-CoP/CeO2 enhanced the electrocatalytic activity through fast electron transfer and optimized adsorption/desorption processes.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Cheng-Bin Hong, Guoliang Li, Haichao Liu
Summary: In this study, a novel green synthesis of piperidine from bio-renewable tetrahydrofurfurylamine (THFAM) is reported. The process involves the hydrogenolysis of THFAM to 5-amino-1-pentanol (APO) and the subsequent intramolecular amination of APO. SiO2-supported Rh-ReOx catalysts showed high efficiency and stability in converting THFAM to piperidine with a yield of 91.5% under the conditions of 200 degrees C and 2.0 MPa H-2 in water. The study provides an efficient strategy for the green production of piperidine and its derivatives from biomass resources.
Article
Chemistry, Physical
Qidi Sun, Qing Wang, Fuzhi Li, Yizhe Liu, Xintong Li, Zonglong Zhu, Jianlin Chen, Yung-Kang Peng, Jun Gu
Summary: Single-atom catalysts are widely used in energy storage and conversion. However, determining the local structure of active metal sites is challenging. In this study, carbon black-conjugated complexes were used as model catalysts to explore the intrinsic activity of metal sites. The catalytic performances of different catalysts were measured, and carbon black-conjugated [Co(salophen)] showed the highest intrinsic activity.
Article
Chemistry, Multidisciplinary
Shaomian Liu, Yongjun Ji, Bing Liu, Wenqing Xu, Wenxing Chen, Jian Yu, Ziyi Zhong, Guangwen Xu, Tingyu Zhu, Fabing Su
Summary: Guided by density functional theory (DFT) calculations, a catalyst with dual active centers, including Co single-atoms (SAs) and CoOx nanoclusters (NCs) co-anchored on Ce0.75Zr0.25O2 support (CZO), has been developed. This catalyst achieves above 99.7% NO conversion and 100% N-2 selectivity at 250-400 degrees C under 5 vol% O-2. The strong interaction among Co SAs, CoOx NCs, and CZO support is confirmed by DFT calculation and experimental results. Co SAs enhance CO adsorption and accompany the oxygen vacancies (OVs) formation in CZO, while the CoOx NCs promote both NO conversion to nitrate intermediate and the breakage of the N-O bond at OVs, synergistically boosting the N-2 formation.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Shaomian Liu, Wenjuan Xue, Yongjun Ji, Wenqing Xu, Wenxing Chen, Lihua Jia, Tingyu Zhu, Ziyi Zhong, Guangwen Xu, Donghai Mei, Fabing Su
Summary: This study demonstrates that interfacial oxygen vacancies (IOVs) generated at the Co3O4-CeO2 heterointerfaces by ball-milling-induced strain can significantly enhance both NOx conversion and N2 selectivity in the CO-SCR process. The catalyst exhibits high catalytic performance under various temperature and oxygen concentration conditions.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Engineering, Environmental
Kangyu Liu, Bingzhang Shao, Haichao Liu, Jinlong He, Aiguo Zheng, Genghong Li, Bo Zheng, Zeyang Li, Wei Liu, Xuefeng Li, Baoning Zong
Summary: In this study, a highly efficient catalyst was developed to convert alpha-amino-e-caprolactam (alpha-ACL) to dimethyl-protected cyclic lysine (DMCL) with a yield of 97.1%. The catalyst surface lacked Broensted acid sites, which facilitated the formation of DMCL and suppressed undesirable reactions. The nylon-6 copolymers produced from the synthesized DMCL showed similar structure and thermal stability to pure nylon-6, indicating potential for synthesizing self-cleaning antibacterial polymers.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Yaning Hu, Shuo Zhang, Zedong Zhang, Hexin Zhou, Bing Li, Zhiyi Sun, Xuemin Hu, Wenxiu Yang, Xiaoyan Li, Yu Wang, Shuhu Liu, Dingsheng Wang, Jie Lin, Wenxing Chen, Shuo Wang
Summary: In this study, a high-performance photocatalytic transfer hydrogenation catalyst was successfully synthesized by loading ultrafine Pd nanoparticles on a graphite-like C3N4 structure with nitrogen defects. The resulting catalyst showed superior reaction rate and selectivity in the hydrogenation of alkynes. The Mott-Schottky effect in Pd/DCN and the nitrogen defects in the supports were found to play important roles in enhancing the catalytic activity.
ADVANCED MATERIALS
(2023)
Review
Chemistry, Physical
Kaiyuan Liu, Pengwan Chen, Zhiyi Sun, Wenxing Chen, Qiang Zhou, Xin Gao
Summary: Producing hydrogen peroxide (H2O2) through electrochemical oxygen reduction reaction (ORR) is a safe and green alternative to traditional anthraquinone processes. Single atom catalysts (SACs) have shown advantages in 2e(-) ORR catalytic production of H2O2, although their selectivity has been a challenge. This article reviews recent research on H2O2 production by SACs catalysis and emphasizes the importance of understanding the atomic interface of SACs in developing novel catalysts.
Article
Chemistry, Physical
Zhimo Fang, Juanjuan Qi, Wenxing Chen, Lin Zhang, Jianhui Wang, Caili Tian, Qin Dai, Wen Liu, Lidong Wang
Summary: By modulating the density of sulfur vacancies, cobalt sulfide catalysts can selectively generate singlet oxygen, enabling highly selective degradation of electron-donating organic pollutants and exhibiting excellent interference resistance for efficient purification applications.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Correction
Chemistry, Physical
Haoxiang Fan, Fengjuan Qin, Qi Yuan, Zhiyi Sun, Hongfei Gu, Wenjing Xu, Hao Tang, Shuhu Liu, Yu Wang, Wenxing Chen, Jia Li, Huazhang Zhai
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Linyuan Tian, Yin-Song Liao, Jyh-Pin Chou, Zicong Tan, Jian Lin Chen, Jung-Hoon Lee, Tsz Woon Benedict Lo, Yung-Kang Peng
Summary: Although there has been considerable attention given to the development of solid catalysts for H2O2 synthesis, optimizing its utilization and product selectivity in a given reaction has been less studied. In this study, it was shown that regulating H2O2 activation on different surfaces of CeO2 can lead to the desired product in aniline oxidation, establishing a structure-selectivity correlation that can guide the rational design of catalysts in other oxidation reactions.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Huifeng Zhuang, Tengfei Zhang, Hong Xiao, Fanchao Zhang, Pinyu Han, Hongfei Gu, Junrong Jiao, Wenxing Chen, Qiuming Gao
Summary: Atomically distributed cross-linked hollow carbonaceous nanovesicle fibers are fabricated using electrostatic spinning and thermal treatment. These conductive nanovesicles are able to store electrolytes and transmit electrons quickly. As a cathode-separator interlayer, they provide efficient electrocatalytic sites, improving the capture and transformation of lithium polysulfides, resulting in high capacity and cycling stability.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Engineering, Environmental
Zhu Zhang, Wenqing Chen, Hiutung Chan, Junjie Peng, Peili Zhu, Junkui Li, Xiaoli Jiang, Zhang Zhang, Ying Wang, Zicong Tan, Yungkang Peng, Shiqing Zhang, Kaili Lin, Ken Kin-Lam Yung
Summary: In this study, the systemic toxicity of polystyrene microplastics (MPs) of different sizes was examined in mice. The results showed that the distribution of MPs in the organs is size-dependent, and exposure to different sized MPs results in distinct toxicity pathways and impacts. This study provides important insights into the toxicity of MPs in mammalian models.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Chemistry, Physical
Ming Qu, Zhe Chen, Zhiyi Sun, Danni Zhou, Wenjing Xu, Hao Tang, Hongfei Gu, Tuo Liang, Pengfei Hu, Guangwen Li, Yu Wang, Zhuo Chen, Tao Wang, Binbin Jia
Summary: This study developed nickel single-site catalysts with dual-coordinated phosphorus and nitrogen atoms, which significantly improved the CO2RR activity of the catalyst. Experimental and theoretical results revealed that the asymmetric Ni-P1N3 site facilitated the adsorption/desorption of CO2 intermediates, thereby promoting reaction kinetics and enhancing CO2RR activity.