CHEMICAL ENGINEERING JOURNAL
·
2015
·
IF 4.321
Dongjing Liu,Weiguo Zhou,Jiang Wu
x Ce y Mn/ZSM-5 sorbents were prepared using sol–gel method and employed for H 2 S removal in the temperature range of 600–800 °C. The sorbents exhibited high performance in sulfur removal due to the cooperative effect of CeO 2 and MnO x . The presence of H 2 was unfavorable for sulfidation and obviously shortened the breakthrough time and reduced the sulfur capacity. However, the existence of CO had little impact on the sulfur-removal performance. The characterization results revealed that the ZSM-5 structure remained intact during preparation and sulfidation process. And active species, such as CeO 2 and Mn 2 O 3 , were well dispersed on ZSM-5, which would suppress the mechanical disintegration and improve the thermal stability of x Ce y Mn/ZSM-5.
研究领域:
环境催化
·
能源化学工程
·
材料科学
·
无机功能材料
·
气体净化技术
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Jiahui Li,Genyan Hao,Gang Jin,Tao Zhao,Dandan Li,Dazhong Zhong,Jinping Li,Qiang Zhao
Replacing the anodic oxygen evolution reaction (OER) in water splitting with 5-hydroxymethylfurfural oxidation reaction (HMFOR) can not only reduce the energy required for hydrogen production but also yield the valuable chemical 2,5-furandicarboxylic acid (FDCA). Co-based catalysts are known to be efficient for HMFOR, with high-valent Co being recognized as the main active component. However, efficiently promoting the oxidation of Co 2+ to produce high-valent reactive species remains a challenge. In this study, Ni-doped CoTe (CoNiTe) nanorods were prepared as efficient catalysts for HMFOR, achieving a high HMFOR current density of 65.3 mA cm −2 at 1.50 V. Even after undergoing five successive electrolysis processes, the Faradaic efficiency (FE) remained at approximately 90.7 %, showing robust electrochemical durability. Mechanistic studies indicated that Ni doping changes the electronic configuration of Co, enhancing its charge transfer rate and facilitating the oxidation of Co 2+ to high-valent CoO 2 species. This work reveals the effect of Ni doping on the reconfiguration of the active phase during HMFOR.
研究领域:
材料科学
·
电化学
·
催化
·
可再生能源
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Chem Catalysis
·
2025
·
IF 11.6
Bin Zhu,Jie Yang,Qiuge Wang,Xiao Yu,Shilin Fan,Weiping Xie,Jian Zhang,Chunlin Chen
The intersection of corrosion engineering for constructing high-performance electrocatalysts and the efficient upgrading of biomass represents two vibrant, sustainable research themes that promise exciting outcomes when combined. In this study, we achieve the highly selective hydrogenation of 5-hydroxymethylfurfural (HMF) to 2,5-bis(hydroxymethyl)furan (BHMF) over corrosion-induced CoCu microwire arrays on copper foam (CoCuMW/CF). An HMF conversion of 95.7% and a BHMF yield of 85.4% can be achieved in the electrochemical process. Mechanistic investigations indicate that the reaction pathway is primarily governed by the Langmuir-Hinshelwood (L-H) mechanism. Density functional theory (DFT) calculations reveal that the CoCu interface exhibits lower free energy barriers for the hydrogenation steps of HMF, which significantly enhances the catalytic performance and BHMF selectivity. The induction of corrosion enhances the electrochemical hydrogenation performance of the copper-based electrocatalyst, which holds significant value in reducing catalyst costs and accelerating the application of HMF electrohydrogenation.
研究领域:
材料科学
·
催化化学
·
可再生资源转化
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of the Taiwan Institute of Chemical Engineers
·
2019
·
IF 3.834
Yunchao Feng,Miao Zuo,Ting Wang,Wenlong Jia,Xiaoyu Zhao,Xianhai Zeng,Yong Sun,Xing Tang,Tingzhou Lei,Lu Lin
Production of 5-hydroxymethylfurfural (HMF) from glucose with high yield remains a big challenge. Thereinto, assembling catalysts with outstanding performance is the bottleneck at the current stage. In this study, effective catalysts were synthesized by loading SO 4 2− /ZrO 2 (SZ) on a series of H + zeolites to investigate the catalytic dehydration of glucose into HMF. Among all the catalysts applied, 2-SZ-HM-550 (HZSM-5 with Si/Al molar ratios of 80∼150, calcined at 550 °C) gave the yields of HMF 41.32%, 61.14%, 54.67% and 40.71% in 4 applied reaction systems, respectively. Moreover, HMF with desirable yield was obtained while other carbohydrates were dehydrated catalyzed by 2-SZ-HM-550, such as fructose, sucrose, inulin and starch.
研究领域:
化学工程
·
催化科学
✓ 已验证
DOI
高影响因子
Toxics
·
2024
·Vol. 12
·期 6
·380
·
IF 3.9
Hui Yang,Xue Zhang,Yadong Zhu,Bo Zhang,Junfeng Fan,Hongfei Zhao,Bolin Zhang
Acrylamide (AA) and 5-hydroxymethylfurfural (HMF), which are potentially carcinogenic to humans, are often produced during the hot processing of foods. This study first used a molecular docking model to simulate the binding behavior of four lactic acid bacteria peptidoglycans (PGNs) to AA/HMF, and the binding rate of LAB-based PGNs to AA/HMF was evaluated in vitro. In silico results show that interaction energy is the driving force responsible for the adsorption of LAB-derived PGNs to AA/HMF. In vitro results showed that the PGN ofB. lactisB1-04 bound the most AA (28.7%) and HMF (48.0%), followed byL. acidophilusNCFM,B. breveCICC 6079, andL. plantarumCICC 22135. Moreover, an AA/HMF-bound layer on the cell surface ofB. lactisB1-04 was observed via AFM and SEM due to adsorption. XPS analysis indicated the removal rate of AA/HMF by selected strains was positively correlated with the proportion of C-O, C=O, and N-H groups of PGNs. The atoms O1, O2, O3, O4, N1, N2, N3, H1, and H2 are involved in the adsorption of LAB-based PGNs to AA/HMF. Thus, the PGNs derived from these fourLactobacillusstrains can be regarded as natural adsorbents for the binding of AA/HMF.
研究领域:
食品科学
·
微生物学
✓ 已验证
DOI
PubMed
高影响因子
ChemSusChem
·
2024
·
IF 7.5
Akkammagari Putta Rangapppa,Wenhua Xue,Anirban Chowdhury,Yixuan Liu,Jong-Min Lee,Jun Zhao
The photocatalytic conversion of biomass-based platform molecules, such as 5-hydroxymethylfurfural (HMF), holds significant importance for the utilization of biomass resources. This study focuses on the unique ability of atomically bridged indium (In) atoms that encourages inactive SnS2 surface and steer the selective HMF oxidation process under solar light. Experimental results suggest that In confined SnS2 structure provides not only favorable sites and electronic structures for the synergistic activation of HMF/O2 but also benefit in charge carrier dynamics, thus influencing the overall activity and selectivity of the SnS2 catalyst. In addition, in-situ spectroscopy and density functional theory (DFT) analysis uncovered the multifunctional role of In sites in promoting the key steps of the catalytic process, from ROS generation to regulated adsorption/activation of *HMF which serves as the rate limiting step of the overall HMF oxidation process. Consequently, the optimized In-SnS2-0.75 photocatalyst demonstrated excellent photo oxidation performance, reaching a high HMF conversion efficiency, yield, and selectivity of 91.2, 73 and 80% respectively, in just two hours of the reaction. This study highlights the strategic approach of rationally designed catalytic systems in order to tune the ROS and the product distribution of the HMF oxidation process.
研究领域:
材料科学
·
催化化学
·
可再生能源
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SOLID STATE IONICS
·
2024
·
IF 3
Qin Zhou,Cong Xia,Ji Li,Amei Cheng,Jianwen Liu,Hongying Liu,Lin Li,Shiquan Wang
Metal-organic framework (MOF-5) material was synthesized by solvothermal method. Porous carbon (C) and sulfur-doped porous carbon (S/C) were fabricated by calcining and vulcanization of MOF-5. X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and Raman spectroscopy were used to characterize the crystal structure and morphology of the samples. The electrochemical performance of C and S/C materials were tested as anode materials for lithium ion batteries (LIBs) and sodium ion batteries (SIBs). The S/C exhibits the high reversible capacity (1114.8 mAh g −1 after 100 cycles at 0.1 A g −1 and 485 mAh g −1 after 500 cycles at 2.0 A g −1 ), as anode for LIBs. It behaves a reversible discharge capacity of 268.8 mAh g −1 after 100 cycles at 0.1 A g −1 and a capacity of 157 mAh g −1 after 1000 cycles at 2.0 A g −1 , as anode for SIBs. Compared with C, the electrochamical performance of S/C material is significantly improved. This is mainly because the bigger specific surface area and the doping of sulfur atoms increases the layer spacing and facilitates the kinetics of the intercalation and deintercalation of Li + and Na + ions, especially Na + ions.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Sustainable Energy & Fuels
·
2024
·Vol. 9
·期 1
·152-171
·
IF 5
Haoyu Liu,Wenbo Luo,Ke Wang,Yanlin Wang,Hong Yuan
The bolaform surfactant C6H13-N+(CH3)2-C6H12-N+(CH3)2-C6H12-O-C6H4-C6H4-O-C6H12-N+(CH3)2-C6H12-N+(CH3)2-C6H13 (BCPH-6-6-6) was synthesized and used to guide the synthesis of hierarchical ZSM-5 nanosheets (HZN) for use as zeolite catalysts. The number of acidic sites and the Al distribution in the zeolite pores were varied by changing the amounts of sodium sulfate and Al in the initial gel. The X-ray diffraction, Fourier transform infrared spectroscopy, scanning electronic microscopy, NH3 temperature programmed desorption, 27Al magic angle spinning nuclear magnetic resonance spectroscopy and N2 adsorption/desorption were used to characterize these materials. These zeolites each had a well-developed hierarchical system and specific surface areas as high as 631 m2 g−1, indicating that the BCPH-6-6-6 formed lamellar micelles based on π–π stacking. Interconnected hierarchical pore structures were retained after the templating agent was removed. The HZN sample exhibited a 90° rotational intergrowth structure and retained a large number of lamellae. The same material had a high concentration of acidic sites and contained Al in a tetrahedral coordination framework. The catalytic cracking of oleic acid using this zeolite gave light olefin yields up to 52.2% at 500 °C, exceeding the performance of conventional ZSM-5 (38.9%), and the catalyst remained active for up to 60 h. At 450 °C, the BTX selectivity of 6.72% obtained with this material also exceeded that from the conventional ZSM-5. These results were attributed to the connected hierarchical pores of the HZN, which promoted diffusion and provided higher carbon resistance.
研究领域:
材料科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF CATALYSIS
·
2014
·
IF 1.552
Shurong Wang,Qinjie Cai,Xiangyu Wang,Li Zhang,Yurong Wang,Zhongyang Luo
Acids and ketones in biomass pyrolysis oil (bio-oil) can be readily cracked to produce hydrocarbons. They can also be enriched in the distilled fraction using molecular distillation techniques. To simulate the actual composition of the distilled fraction, the co-cracking performance of mixtures of hydroxypropanone, cyclopentanone, and acetic acid with ethanol in a fixed-bed reactor over an HZSM-5 catalyst was studied. The influences of reaction temperature and pressure on the reactant conversion, selectivity, and composition of the oil phase were investigated. At a low reaction temperature of 340 °C, the conversions of acetic acid and ethanol were as low as 67.9% and 74.4%, respectively, and the oil phase had a low hydrocarbon content of 59.8%, with large amounts of oxygenated byproducts. Cracking under atmospheric pressure also generated a low-quality oil phase with a very low selectivity of only 10.8%. Increasing the reaction temperature promoted reactant conversion and improved the deoxygenation efficiency, whereas increasing the reaction pressure significantly promoted hydrocarbon production. The optimum conditions for biogasoline production were 400 °C and 2 MPa. Under these conditions, the reactant conversion reached 100% and the oil phase selectivity was 31.5 wt%. This oil phase consisted entirely of hydrocarbons, 91.5 wt% of which were aromatic hydrocarbons , indicating that the HZSM-5 catalyst had high activity for deoxygenation and aromatization reactions during cracking. In addition, characterization of the spent catalysts and stability tests showed that the catalyst was deactivated after a long reaction time. However, the catalytic activity was recovered by catalyst regeneration.
研究领域:
能源生物学
·
催化化学
✓ 已验证
DOI
高影响因子
CARBOHYDRATE RESEARCH
·
2012
·
IF 2.332
Xingcui Guo,Quan Cao,Yijun Jiang,Jing Guan,Xiaoyan Wang,Xindong Mu
Mesoporous SBA-15 materials functionalized with propylsulfonic acid groups (SBA-15-SO 3 H) were synthesized through a conventional one-pot route. It was used as a catalyst for the selective synthesis of 5-hydroxymethylfurfural (HMF) from the dehydration of fructose using BmimCl as solvent. Reaction time, temperature and fructose concentration were investigated during the HMF synthesis procedure. The catalyst SBA-15-SO 3 H exhibits high fructose conversion (near 100%) and HMF selectivity (about 81%) with good stability in the HMF synthesis. It was a suitable catalyst to produce HMF from renewable carbohydrates in potential industrial process.
研究领域:
化学工程
·
催化化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Tianwei Wu,Zhenyu Du,Hao Wang
Reducing energy consumption in the desorption process of chemical absorption-based carbon capture is crucial for achieving efficient industrial-scale post-combustion carbon capture. Despite advancements in solvent improvement, catalyst application, and process optimization, there remains a significant gap between the energy consumption level and its theoretical limit. This study proposed an innovative surface treatment-seeding-hydrothermal synthesis method for loading ZSM-5 zeolite acidic catalysts onto the surface of industrial packing to enhance both the reaction kinetics and mass transfer during desorption, thereby reducing desorption energy consumption. The effectiveness of the loaded catalyst was verified in the temperature range of 86–106 °C, showing 7.84 %-37.25 % improvement in desorption amounts compared to commercial catalysts of equal volume. The optimal synthesis parameters for the loading process were investigated using various characterization techniques. It was observed that controlling the synthesis time and the number of layers to induce surface roughness, in conjunction with utilizing gels with a higher silica-to-alumina ratio, significantly enhanced the desorption performance of the supported catalytic packings based on the optimized parameters, supported catalytic packings prepared with industrial packings were tested in a simulated cyclic desorption tower. The results showed that, compared to the blank packing, desorption amounts increased by 24.30 %, 78.57 %, and 53.50 %, while relative energy consumption decreased by 19.66 %, 44.03 %, and 35.57 %, respectively.
研究领域:
化学工程
·
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
CytoJournal
·
2024
·
IF 2.5
Xinghua Liang,Xuelian Liu,Long Zhang,Junhao Liu,Rong Yan,Haiyan Li,Xiancheng Zeng,Hong Wang
Objective:
Colorectal cancer is severely challenging because of the insufficient understanding of the mechanism underlying its resistance to clinical chemotherapy. The purpose of our study is to investigate the role of the LIM protein Ajuba (JUB) in the chemoresistance of colon cancer and its potential effect on clinical treatment.
Material and Methods:
The protein levels of JUB in colon cancer tissues were evaluated using Western blot analysis and immunohistochemistry assays. The correlation between JUB and the prognosis of patients with colorectal cancer was determined using Kaplan–Meier plot analysis. 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assays were employed to determine the 50% inhibitory concentration of 5-fluorouracil (5-FU) and thus assess the effect of JUB on the effectiveness of 5-FU. In addition, the rate of cellular apoptosis was measured using fluorescence-activated cell sorting assays. Side population and sphere formation analyses were conducted to determine the role of JUB in promoting the stem cell-like traits of colon cancer cells. In vivo assays were performed and detect whether the downregulation of JUB induces 5-FU sensitivity. Moreover, luciferase and Western blot assays were employed to uncover the mechanism through which JUB promotes chemoresistance in colon cancer.
Results:
JUB expression was upregulated in chemoresistant colon cancer (P < 0.001) and correlated with relapse-free survival (P = 0.000002). Functionally, the upregulation of JUB conferred 5-FU resistance to colon cancer cells in vitro, whereas the downregulation of JUB induced 5-FU sensitivity in colon cancer cells in vivo. The high expression of JUB promoted the tumorigenic capability of colon cancer cells. Furthermore, the increased expression of JUB activated multiple downstream genes of the Notch signaling pathway with increased expression in JUB-overexpressing cells but reduced expression in JUB-silenced cells. Importantly, the inhibition of Notch signaling using a small-molecule inhibitor significantly suppressed JUB-induced chemoresistance.
Conclusion:
Results suggest that JUB plays an important role and may serve as a biomarker for the clinical treatment of patients with 5-FU-resistant colon cancer.
研究领域:
肿瘤学
·
分子生物学
·
药理学
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）