Article
Chemistry, Applied
Yong Tang, Kaihong Liu, Ye Wu, Siyu Zhou, Tanyu Cheng, Guohua Liu
Summary: The development of cooperative catalysis is important for multi-step sequential enantioselective organic transformations. This study presents the design of an integrated Cu/bisoxazoline and Ru/diamine co-catalyst system for the direct preparation of 1,3-distereocentered beta-sulfonamido alcohols. The cascade reaction enables efficient and selective synthesis of chiral products.
ADVANCED SYNTHESIS & CATALYSIS
(2022)
Article
Chemistry, Applied
Yingqi Xia, Baijun Ye, Minjie Liu, Meifen Jiang, Fener Chen
Summary: An expeditious and efficient continuous-flow process for the synthesis of syn-2-amino-1,3-diol was reported in this paper, achieving a 93% isolated yield using Raney Ni catalyst. The reaction time was significantly shortened in the flow system compared to batch processing, and the optimal conditions for the reaction were determined.
ORGANIC PROCESS RESEARCH & DEVELOPMENT
(2022)
Article
Chemistry, Physical
Miroslaw K. Szukiewicz, Krzysztof Kaczmarski
Summary: The study elaborates a dynamic model of the hydrogenation reaction of benzene to cyclohexane in an industrial reactor, which can predict the composition and temperature profile of the reaction mixture accurately. The model also enables the anticipation of catalyst activity and remaining deactivated catalyst lifetime, providing deep insights for knowledge-based decision-making. Improvements in operating conditions or catalyst application resulting from the study are expected to significantly impact profits and environmental protection due to the large-scale and expected growth of the process.
Article
Chemistry, Multidisciplinary
Jing Wang, Han Li, Jiawei Chen, Cheng Wang
Summary: This study reports a reactor for base-free formaldehyde condensation to 1,3-dihydroxyacetone (DHA) using a Soxhlet extractor that separates the product from the catalyst, enabling stable catalytic operation and a clean conversion of formaldehyde to DHA.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Chuncheng Lin, Weihao Wan, Xueting Wei, Jinzhu Chen
Summary: Co nanoparticles encapsulated in N-doped carbon nanotubes (Co@NC900) have been investigated as a potential substitute for precious Pt-group catalysts in hydrogenative heterocyclization reactions. Co@NC900 demonstrates efficient catalytic activity for the hydrogenative coupling of 2-nitroaniline to benzaldehyde, with >99% yield at ambient temperature in a single step. The catalyst is easily recoverable and recyclable, with kinetic experiments suggesting that hydrogenation is the rate-determining step, with an apparent activation energy of 41 +/- 1 kJ mol(-1). Theoretical investigations reveal the mechanism by which Co@NC900 activates both H-2 and the nitro group of 2-nitroaniline, providing insights for the green and efficient synthesis of heterocyclic compounds.
Article
Agricultural Engineering
G. Grasa, I. Martinez, R. Murillo
Summary: Gasification kinetics of six chars from residual origin were studied under relatively low temperature, low CO2, and high H2O partial pressures. The Random Pore Model (RPM) showed the best fit to experimental results, but the selection of the reaction model depended on the ash composition, specifically the presence of alkali and alkaline earth metals. Chars with ash content higher than 30% wt. were modeled with the RPM model, while chars with the highest K/Si ratio required modified versions of the RPM to accurately predict reaction rates. Textural properties played a key role in determining reaction parameters, such as the pre-exponential factor and activation energy, for chars with similar ash content and composition.
BIOMASS & BIOENERGY
(2024)
Article
Engineering, Environmental
Chao Wei, Jianping Dong, Huining Zhang, Xu Wang
Summary: This study examined the effect of temperature, L/S ratio, and CRW concentration on the carbonation degree in basic oxygen furnace slag and CRW carbonation process, and discussed their kinetics using surface coverage model and shrinking core model. A CO2 sequestration intensifying factor was introduced to consider carbonation depth, showing a 1.6 times enhancement compared to water carbonation. The reaction kinetics were controlled by the diffusion of calcium, with results useful for understanding micro-scale reactions in the future establishment of a triple wastes self-circulation system network for industrial application.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Applied
Qi Dang, Xiaoqi Zhang, Yuling Zhou, Xiaotong Jia
Summary: This work presents a robust method for predicting and optimizing syngas production through the development of a kinetic-based biomass gasification process model. Sensitivity and multivariable analyses were conducted to determine key parameters affecting syngas yield, leading to the establishment of a surrogate model for predicting optimal syngas yields under different operating conditions. The global optimization model demonstrated a maximum syngas yield of 78.6 vol% under specific temperature, ER, S/B ratio, and MC conditions.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Agricultural Engineering
Misa Mojca Cajnko, Jost Oblak, Miha Grilc, Blaz Likozar
Summary: Enzymes play a crucial role in lignin valorization, with different enzymes involved in various elementary reaction mechanisms. Degradation of lignin depends on enzyme activity and the interaction with proteins in ways that target specific covalent bonds in lignin. Various factors influence enzymatic activity, which must be taken into consideration for optimal functionality and synthesis yields.
BIORESOURCE TECHNOLOGY
(2021)
Article
Chemistry, Physical
Xiaodong Liu, Yunlei Fu, Defang Zhou, Hanchu Chen, Yanyan Li, Jianhui Song, Shouyan Zhang, Hui Wang
Summary: A ruthenium-based catalyst was synthesized for the direct catalytic hydrogenation of carboxyl nitrile rubber (XNBR). The effects of various hydrogenation conditions on the reaction were investigated, and the optimal conditions were determined as 11.25 wt% solid content, 140 degrees C reaction temperature, 1300 psi hydrogen pressure, and 0.05 wt% catalyst. The study also examined the vulcanization, mechanical performance, aging resistance, and oil resistance of the produced hydrogenated carboxyl nitrile rubber (HXNBR) under these conditions.
Article
Engineering, Environmental
Cheng Liu, Iran Li, Linlin Wu, Zhongfeng Geng
Summary: The kinetics of 1,3-butadiene synthesis from ethanol and acetaldehyde over ZrO2-MgO-SiO2 catalyst were studied, showing that the aldol condensation step followed the Langmuir-Hinshelwood mechanism. The obtained kinetics models were verified under different conditions, suggesting their validity for practical applications.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Jiapeng Bi, Panpan Zhou, Xuezhang Xiao, Zhaoqing Liang, Jiacheng Qi, Yajie Zhang, Huaqin Kou, Tao Tang, Lixin Chen
Summary: In this study, the poisoning resistance behaviors and mechanism of ZrCo in H2+CO2 mixed gas were systematically investigated. Even trace amounts of CO2 can strongly deteriorate hydrogenation kinetics of ZrCo, but this phenomenon can be mitigated by further increasing the inputting pressure of the mixed gas. In-situ surface reconstruction strategy by high-temperature treatment was proposed, which enhanced the CO2 poisoning tolerance of ZrCo through the formation of metallic Co nanoclusters on ZrCo surface.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Environmental
Hao Li, Xin Xu, Xue Liu, Zhen Yao, Kun Cao
Summary: The research investigated the kinetics of 1,3-butadiene dimerization under high temperature and high pressure using a microchannel reactor. The study found that the dimerization reaction produced VCH and COD, with COD only forming under high temperature conditions. By fitting experimental data, apparent kinetic parameters for the dimerization under high pressure were obtained, showing that the reaction rate constants in the liquid phase were greater than in the gas phase.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Yi Zhao, Kuan Chang, Qingqing Gu, Bing Yang, Jing Xu, Ying Zhang, Chengsi Pan, Zhenlin Wang, Yang Lou, Yongfa Zhu
Summary: Layered two-dimensional MoS2 exhibits excellent activity and selectivity for heterogeneous selective hydrogenation. The strategy of constructing edge-confined active centers with specific phase composition opens an approach to developing highly efficient catalysts.
Article
Multidisciplinary Sciences
Peeraporn Pakakaew, Yuthana Phimolsiripol, Siraphat Taesuwan, Sarawut Kumphune, Wannaporn Klangpetch, Niramon Utama-ang
Summary: This research aimed to reduce the processing time of black garlic while maintaining a high level of S-allylcysteine (SAC). By pre-treating and incubating the fresh garlic under different temperature and humidity conditions, the study achieved a shorter processing time and higher SAC content. The resulting product was called golden garlic due to its golden color.
SCIENTIFIC REPORTS
(2022)
Article
Engineering, Environmental
Zeliang Wu, Liang Wang, Shixia Chen, Xiaomin Zhu, Qiang Deng, Jun Wang, Zheling Zeng, Shuguang Deng
Summary: This study developed a HZIF/CNT cathode via facile TA etching and low-temperature treatment, which showed strong LiPSs adsorption capability and excellent battery performance.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Agriculture, Multidisciplinary
Jiaheng Xia, Ping Yu, Zheling Zeng, Maomao Ma, Guohua Zhang, Dongman Wan, Deming Gong, Shuguang Deng, Jun Wang
Summary: The study showed that lauric triglyceride (LT) effectively reduced body weight and improved serum triglyceride metabolism in obese rats, while also reducing adipocyte and hepatic lipid deposition. Additionally, LT altered gene expression related to lipogenesis, lipolysis, beta-oxidation, and mitochondrial biosynthesis in white fat and liver tissues, suggesting that LT can ameliorate diet-induced obesity in rats.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2021)
Article
Biochemistry & Molecular Biology
Junxin Zhao, Maomao Ma, Zheling Zeng, Ping Yu, Deming Gong, Shuguang Deng
Summary: SCNL is a novel lipase with high purity and activity, showing robust activity at various temperatures and pH values, sensitivity to enzyme inhibitors and metal ions, and potential applications in industrial and biotechnological fields.
JOURNAL OF ENZYME INHIBITION AND MEDICINAL CHEMISTRY
(2021)
Article
Chemistry, Physical
Rui Gao, Xiang Li, Lingyun Guo, Zhikun Tong, Qiang Deng, Jun Wang, Zheling Zeng, Ji-Jun Zou, Shuguang Deng
Summary: A bifunctional catalyst based on pyrochlore/Al2O3 composites with rich oxygen defects was synthesized, showing enhanced C = O hydrogenation ability and Lewis acid-catalyzed ring-rearrangement ability. The composite-based catalysts demonstrated significantly improved reaction rates compared to single metal oxide-based catalysts.
APPLIED CATALYSIS A-GENERAL
(2021)
Article
Chemistry, Physical
Pei-Pei Hou, Long Tan, Zhi Liu, Meng-Chao Li, Xin-Jian Jin, Qun-Yi Zhou, Peng Liao, Xiao-Di Wang, Ping Wu, Xiang-Rong Shao, Zheling Zeng, Shuguang Deng, Gui-Ping Dai
Summary: The study introduces a novel carbon-based nanostructure synthesized through a series of carbon nanopearl chains and carbon nanofiber connection structure. These structures, with nanometer-sized spheres and solid interiors, have potential as reinforcing matrix for producing strong and tough carbon-based nanocomposites.
FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES
(2021)
Article
Engineering, Chemical
Zhenliang Zhu, Peixin Zhang, Bei Li, Shixia Chen, Qiang Deng, Zheling Zeng, Jun Wang, Shuguang Deng
Summary: The study presents a universal strategy for enhancing deep desulfurization by chemically immobilizing amino acids into a robust metal-organic framework. The modified MOF-808-His material exhibited excellent adsorption performance with high SO2 uptake and superior SO2/CO2 selectivity. The findings highlight the crucial role of immobilized amino acids in improving SO2 capture ability and selectivity.
Article
Engineering, Chemical
Ze Dong, Bei Li, Hua Shang, Peixin Zhang, Shixia Chen, Jiangfeng Yang, Zheling Zeng, Jun Wang, Shuguang Deng
Summary: The study introduces a simple method to prepare ultramicroporous carbon granules with a narrow pore-size distribution, which show efficient CH4/N-2 separation capabilities. The granular oil-tea-shell-derived porous carbon (GOC-2) exhibited excellent CH4 adsorption and separation performance at 1.0 bar and 298K.
Article
Engineering, Electrical & Electronic
Buwen Cao, Shuguang Deng, Hua Qin, Yue Tan
Summary: A centralized mobility-based clustering protocol is proposed to improve network performance in traditional wireless sensor networks, focusing on transmission success rate, power consumption, and control overhead.
EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING
(2021)
Article
Chemistry, Physical
Jiejing Huang, Shixia Chen, Fangqi Yang, Weikang Yu, Qiangguo Meng, Haoming Yu, Zheling Zeng, Jun Wang, Shuguang Deng
Summary: In this study, small nickel nanoparticles confined in nitrogen-doped carbon were successfully prepared for highly efficient CO2 to CO conversion, showing excellent Faradaic efficiency and long-term stability. The research provides a new pathway for the facile preparation of metal nanoparticles for efficient CO2 to CO conversion.
Article
Engineering, Environmental
Kodanda Phani Raj Dandamudi, Melvin Mathew, Thinesh Selvaratnam, Tapaswy Muppaneni, Mark Seger, Peter Lammers, Shuguang Deng
Summary: The study confirmed the feasibility of recovering nutrients from G. sulphuraria biochar and using these nutrients to successfully cultivate algae without inhibition, supporting reduced steps for recycling, process optimization, and HTL technology commercialization.
RESOURCES CONSERVATION AND RECYCLING
(2021)
Article
Engineering, Environmental
Kodanda Phani Raj Dandamudi, Tessa Murdock, Peter J. Lammers, Shuguang Deng, Elham H. Fini
Summary: The study explores the use of multiple feedstock sources to produce functionalized biochar with specific functional groups on its surface. By blending microalgae and swine manure, different biochar yields and properties were obtained for potential applications in construction and manufacturing. The presence of various functional groups on the biochar surface could enhance its role as a free-radical scavenger in these industries, highlighting the importance of developing unconventional uses for biochar in addressing biowaste challenges and promoting environmental sustainability through resource conservation and forest management.
RESOURCES CONSERVATION AND RECYCLING
(2021)
Article
Chemistry, Multidisciplinary
Qiang Deng, Jiawei Zhu, Yao Zhong, Xiang Li, Jun Wang, Jianxin Cai, Zheling Zeng, Ji-Jun Zou, Shuguang Deng
Summary: The study introduces metal-organic framework (MOF) encapsulating metal-acid interfaces as catalysts for C-O hydrogenolysis of biomass-derived aromatic aldehydes. These catalysts show higher activity and selectivity compared to traditional supported catalysts, with Pd@UiO-SO3H exhibiting the best performance.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Physical
Zeliang Wu, Shixia Chen, Liang Wang, Qiang Deng, Zheling Zeng, Jun Wang, Shuguang Deng
Summary: This study demonstrates the use of Ni, Co bimetal phosphides in hollow carbon nanocages as a multifunctional separator interlayer for high-power Li-S batteries, achieving outstanding cyclic lifespan and rate performance.
ENERGY STORAGE MATERIALS
(2021)
Article
Engineering, Chemical
Zhenliang Zhu, Bei Li, Xing Liu, Peixin Zhang, Shixia Chen, Qiang Deng, Zheling Zeng, Jun Wang, Shuguang Deng
Summary: This study reported two metal-organic frameworks for the adsorptive separation of xenon and krypton, with Al-CDC showing higher adsorption capacity and selectivity due to its narrow pore aperture and pore structure. The results indicate potential industrial applications and stable reusability of these materials.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Physical
Shixia Chen, Yuewei Li, Zhuogang Bu, Fangqi Yang, Junhui Luo, Qizheng An, Zheling Zeng, Jun Wang, Shuguang Deng
Summary: The research demonstrates a hydrogen-bonding promoted strategy significantly enhances the efficiency of CO production on a Cu-N-C catalyst, showing potential application prospects in efficient CO2 electroreduction.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Engineering, Chemical
Xu Yang, Jieshi Xiao, Jian Huang, Kaixiang Peng
Summary: This study introduces an online convolutional adversarial autoencoder (AAE) model to learn representative industrial process information. By extracting features that reflect diverse information and follow a Gaussian distribution, the model improves the accuracy of fault detection and removes redundant information through a feature selection strategy.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2024)
Article
Engineering, Chemical
Shao-Yang Wu, Meng-Tsun Lai, Chung-Hui Hsu, Kevin C. W. Wu, Yesong Gu
Summary: This study investigated the effectiveness of using Fe-based MOF or MIL-100(Fe) in conjunction with a PEDOT-modified Pt electrode for detecting the synthetic azo dye tartrazine. By modifying the electrode with two different methods, favorable lower reductive potentials, competitive sensitivities, and good repeatability and stability were achieved in all MIL-100(Fe)/PEDOT/Pt electrodes.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2024)