Article
Chemistry, Physical
Zhaoying Di, Hongxia Chen, Runduo Zhang, Hao Wang, Jingbo Jia, Ying Wei
Summary: This study investigates the effect of reducing pretreatment on the physicochemical properties of zeolite catalysts and their performance in formaldehyde oxidation. The results show that reducing treatment can significantly reduce the size of Pd nanoparticles and improve the dispersion of noble metal. The use of NaBH4 as a reducing agent leads to the smallest Pd nanoparticle size and the best catalytic activity.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Engineering, Chemical
Hua Liu, Xuechao Gao, Shengxian Wang, Zhou Hong, Xuerui Wang, Xuehong Gu
Summary: High-silica CHA (SSZ-13) zeolite membranes show great potential for CO2 separation, but practical application is limited by high investment costs. In this study, SSZ-13 zeolite membranes were successfully synthesized on hollow fibers with different pore sizes, achieving good CO2/CH4 selectivity and CO2 permeance on membranes with 150 nm pores. Evaluation of gas permeation found that small molecules mainly pass through zeolitic pores, while larger molecules are more sensitive to non-zeolitic pores.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Ryan M. Claydon, Luis A. Roman-Ramirez, Joseph Wood
Summary: The study shows that the Mo-MMO catalyst exhibits comparable reaction rates to Pd-2%/Al2O3 catalyst and significant advantage in cis-decalin production, offering the opportunity for generating more alkyl naphthenes in subsequent hydrodecyclization reactions. On the other hand, Pd catalysts supported on Al2O3 tend to preferentially produce trans-decalin due to the electronic properties of Pd catalysts influencing octalin intermediate orientations on the catalyst surface.
Article
Nanoscience & Nanotechnology
Phong Hoai Le, Shunki Yamashita, Kiet Le Anh Cao, Tomoyuki Hirano, Nao Tsunoji, Duhaul Biqal Kautsar, Takashi Ogi
Summary: This study focused on developing TWC particles with a hierarchically ordered macroporous structure using a template-assisted spray method. The synthesized catalyst particles exhibited better catalytic performance due to the enhanced mass transfer efficiency induced by the macropores.
ACS APPLIED NANO MATERIALS
(2023)
Article
Materials Science, Coatings & Films
David Shaw, Justyna Kulczyk-Malecka, Peter J. Kelly, Aidan M. Doyle
Summary: Magnetron sputtering was used to prepare Pd heterogeneous catalyst powders for the abatement of exhaust emissions in natural gas fuelled engines. The study found that the quantity of Pd deposited increased with deposition time and varied with the support material. The methane oxidation activity of the catalysts also increased with Pd content, with zeolite catalysts showing the highest activity despite having a greater amount of Pd present on titania.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Engineering, Environmental
Weilong Hou, Kehang Lin, Xiangyu Zhang, Bowen Xu, Yuexia Wang, Xinqing Lu, Yijing Gao, Rui Ma, Yanghe Fu, Weidong Zhu
Summary: This study developed efficient catalysts for nonoxidative propane dehydrogenation (PDH) and demonstrated that the stability and selectivity for propylene of the catalysts were significantly enhanced. The catalysts also showed no sintering at high temperatures, providing a strategy for practical applications.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Atsushi Ishihara, Mizuki Kobayashi, Tadanori Hashimoto
Summary: Among the tested catalysts, Pt/CM exhibited the highest conversion rate of soybean oil at 460 degrees Celsius under 1.0 MPa of hydrogen, attributed to its higher acid sites and more stable pore structure compared to other catalysts.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Review
Chemistry, Physical
Hai-Ying Chen, Jing Lu, Joseph M. Fedeyko, Agnes Raj
Summary: This review summarizes recent literature reports on the development of zeolite supported Pd catalysts for the complete oxidation of methane. It reveals that the framework structures of zeolite have little influence on the methane oxidation activity or the stability of the supported catalysts. The Si/Al ratio of the zeolite support plays a critical role in determining the catalytic activity and stability. Catalysts supported on siliceous zeolites consistently show excellent activity and stability, with silanol nest defect sites proposed as anchoring sites for Pd nanoparticles. Challenges in overcoming sulfur poisoning are discussed.
APPLIED CATALYSIS A-GENERAL
(2022)
Article
Chemistry, Multidisciplinary
Yujia Liu, Chenyang Zhao, Bing Sun, Hongwei Zhu, Ning Shi, Wei Xu
Summary: In this study, a silane-assisted strategy was developed to prepare TS-1-CTES zeolites with abundant micropore channels, which exhibited high propylene conversion (13.3%) and high propylene oxide selectivity (92.7%). The addition of silane not only participated in constructing the MFI framework but also served as a spatial filling agent to build secondary micropore channels. The optimized distribution of Au and Ti active sites in Au/TS-1-CTES enhanced their synergistic catalytic effects and improved the stability of propylene oxide formation rate.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Applied
Yiquan Xie, Ling Zhang, Yiwen Jiang, Shichao Han, Liang Wang, Xiangju Meng, Feng-Shou Xiao
Summary: The study investigated the catalytic combustion of methane over zeolite-supported Pd catalysts, finding significant improvement in catalytic performance through ion exchange, with NaLa-ZSM-5 supported Pd catalyst showing the best result. Using an optimized catalyst, methane conversion could be achieved at a lower temperature. Factors influencing catalytic activity were identified as Pd dispersion and its chemical states.
Article
Materials Science, Multidisciplinary
Elena I. Senkina, Ales S. Buyakov, Sergey O. Kazantsev, Olga V. Bakina, Maksim G. Krinitsyn, Aleksandr S. Lozhkomoev
Summary: In this study, the modification of macroporous alpha-Al2O3 ceramics with AlOOH/Ag nanostructures has been demonstrated to enhance the efficiency of water purification, effectively removing bacteria.
Article
Chemistry, Physical
Xin Song, Fangjun Shao, Zijiang Zhao, Xiaonian Li, Zhongzhe Wei, Jianguo Wang
Summary: In this study, a single-atom Ni-modified Al2O3-supported Pd catalyst was proposed for the selective semi-hydrogenation of alkynes with high activity at low temperatures and pressures. The catalyst exhibited good stability and achieved efficient reactions at lower temperatures and pressures, benefiting from the synergistic effect of Pd and Ni.
Article
Chemistry, Physical
Pawel Mierczynski, Magdalena Mosinska, Lukasz Szkudlarek, Karolina Chalupka, Misa Tatsuzawa, Marwa Al Maskari, Waldemar Maniukiewicz, Satriyo K. Wahono, Krasimir Vasilev, Malgorzata I. Szynkowska-Jozwik
Summary: Biodiesel production from rapeseed oil and methanol using various monometallic catalysts supported on natural zeolite was investigated. Highest activity and methyl ester yields were observed with Pt/NZ catalyst, suggesting noble metals improve reactivity properties. Increasing metal loading from 0.5 to 2 wt.% enhanced catalytic performance.
Article
Chemistry, Physical
Renjie Li, Baofang Jin, Teng Ma, Yutai Liang, Yuechang Wei, Xuehua Yu, Jianmei Li, Jian Liu, Zhen Zhao
Summary: Au-Pd bimetallic nanoparticles supported on 3DOM Al2O3 with different Au/Pd ratios were synthesized using the micropores-diffused reduction method. The supported bimetallic catalysts, especially Au-2-Pd-2/3DOM Al2O3, showed higher catalytic activity for soot combustion due to synergistic effects between gold and palladium. The Au/Pd ratio influenced the chemical states and size of the nanoparticles significantly.
Article
Chemistry, Physical
Jiaqin He, Fangfang Zheng, Yuanbo Zhou, Xunxun Li, Yaru Wang, Jun Xiao, Youyong Li, Dongyun Chen, Jianmei Lu
Summary: A series of 3D@2D constructed Al2O3@CoMn2O4 microspheres with a hollow hierarchical structure supporting Pd nanoparticles were successfully synthesized. The catalyst exhibited excellent catalytic activity, high stability, water-resistance, and low-cost, making it a promising candidate for VOC combustion. The introduction of hollow Al2O3 and in situ growth of 2D CMO spinel materials in the microspheres resulted in a well-defined core-shell hollow hierarchical structure with larger specific surface area and promoted catalytic activity. The optimum catalyst showed the lowest apparent activation energy for toluene and achieved 100% conversion of toluene, benzene, and ethyl acetate at relatively low temperatures.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Endocrinology & Metabolism
Andrea J. Glenn, Jie Li, Kenneth Lo, David J. A. Jenkins, Beatrice A. Boucher, Anthony J. Hanley, Cyril W. C. Kendall, Aladdin H. Shadyab, Lesley F. Tinker, Steven D. Chessler, Barbara V. Howard, Simin Liu, John L. Sievenpiper
Summary: This study analyzed the relationship between diet patterns and incident type 2 diabetes in 145,299 postmenopausal women without diabetes. The findings showed that greater adherence to the Portfolio, DASH, and Mediterranean diets was associated with a lower risk of type 2 diabetes in postmenopausal women.
Article
Nutrition & Dietetics
Jie Li, Xia Zou, Fei Zhong, Qingling Yang, JoAnn E. Manson, George D. Papandonatos, Lingling Zheng, Wen-Chih Wu, Kei Hang Katie Chan, Yan Song, Jian Kuang, Simin Liu
Summary: Prenatal exposure to the Chinese famine of 1959-1962 was associated with increased risk of diabetes in men but not in women, independent of age.
EUROPEAN JOURNAL OF NUTRITION
(2023)
Article
Nanoscience & Nanotechnology
Guoqiang Gan, Fengquan Xu, Xinyong Li, Shiying Fan, Chunpeng Bai, Qidong Zhao, Moses O. Tade, Shaomin Liu, Wenjun Zhang
Summary: The influence of crystal phase on the electrocatalytic performance and active sites of CuFe2O4 spinel for the electrochemical dechlorination of 1,2-dichloroethane is studied. A higher activity and ethylene selectivity are observed for the cubic phase compared to the tetragonal phase, indicating the significant enhancement of electrocatalytic performance by the cubic crystal structure. The octahedral Fe atom on the surface of cubic CuFe2O4(311) is identified as the active site responsible for ethylene production with an energy barrier of 0.40 eV. This work highlights the importance of crystal phase engineering for optimizing electrocatalytic performance and provides an efficient strategy for the development of advanced electrocatalysts.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Medical Laboratory Technology
Jie Li, Lingling Zheng, Kei Hang Katie Chan, Xia Zou, Jihui Zhang, Jundong Liu, Qingwei Zhong, Tracy E. Madsen, Wen-Chih Wu, JoAnn E. Manson, Xueqing Yu, Simin Liu
Summary: This study aimed to explore the role of sex hormone-binding globulin (SHBG) levels in risk stratification and intervention for coronary heart disease (CHD). The findings showed that higher SHBG levels were associated with a decreased risk of CHD in both men and women. Therefore, SHBG can be used as a marker for assessing and predicting the risk of CHD.
CLINICAL CHEMISTRY
(2023)
Article
Public, Environmental & Occupational Health
Joanna Lankester, Jin Li, Elias Levy Itshak Salfati, Marcia L. Stefanick, Kei Hang Katie Chan, Simin Liu, Carolyn J. Crandall, Shoa L. Clarke, Themistocles L. Assimes
Summary: The study finds a causal association between a later age at natural menopause and a decreased risk of osteoporosis and fractures, as well as an increased risk of lung cancer.
INTERNATIONAL JOURNAL OF EPIDEMIOLOGY
(2023)
Article
Engineering, Environmental
Lijinhong Huang, Bin Xiao, Lihong Liu, Wenhao Li, Xiaoguang Duan, Wanfu Huang, Chunyan Fan, Yu Dong, Shaomin Liu
Summary: In this study, three-dimensional porous polymers were successfully prepared using benzimidazole and benzoxazole via a one-pot synthesis. The materials exhibited high surface areas and pore volumes, making them suitable for the adsorption and removal of heavy rare earth ions.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Chemistry, Physical
Fukai Wang, Yanan Wang, Linzhe Li, Zichen Li, Weimin Zhang, Zhiwei Xue, Dong Liu, Xiuxia Meng, Claudia Li, Jaka Sunarso, Shaomin Liu, Naitao Yang
Summary: In this study, a novel non-precious cathode catalyst (Fe@MXene) was developed, which achieved a high Faradaic efficiency of 8.4% and an NH3 yield of 8.24 x 10-9 mol·s-1·cm-2 on an anode-supported intermediate-temperature proton-conducting solid oxide cell.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Nutrition & Dietetics
Ross L. Prentice, Sowmya Vasan, Lesley F. Tinker, Marian L. Neuhouser, Sandi L. Navarro, Daniel Raftery, G. A. Nagana Gowda, Mary Pettinger, Aaron K. Aragaki, Johanna W. Lampe, Ying Huang, Linda Van Horn, JoAnn E. Manson, Robert Wallace, Yasmin Mossavar-Rahmani, Jean Wactawski-Wende, Simin Liu, Linda Snetselaar, Barbara V. Howard, Rowan T. Chlebowski, Cheng Zheng
Summary: Based on the Women's Health Initiative observational data, a low-fat dietary pattern is beneficial for breast cancer, coronary heart disease, and diabetes. After calibrating fat intake with biomarkers, the density of fat is associated with both breast cancer and coronary heart disease, but the association with coronary heart disease weakens after controlling for other dietary variables.
JOURNAL OF NUTRITION
(2023)
Article
Engineering, Chemical
Di Wang, Heyao Wu, Yanyang Xu, Tianjia Chen, Yongfeng Zhang, Zhifei Hu, Zhigang Wang, Xiaoyao Tan, Shaomin Liu
Summary: In this study, nickel hollow fiber membranes were successfully fabricated and used as membrane reactors for toluene steam reforming and H2 separation. The results showed that the membrane reactor achieved stable and efficient performance in toluene conversion and H2 production under suitable conditions.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Hongyong Zhao, Ting Song, Xiaoli Ding, Ruyi Cai, Xiaoyao Tan, Yuzhong Zhang
Summary: Membrane technology is widely used for O2/N2 separation in industries, and cobalt-based compounds are known for their affinity for O2, which improves O2/N2 selectivity. A study successfully developed PIM-1 mixed matrix membranes containing cobalt-based ionic liquid, resulting in higher O2/N2 selectivity and lower O2 permeability. The application of a magnetic field further enhanced the O2/N2 selectivity of the membranes. These findings highlight the potential of these membranes for air separation.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Guoqiang Song, Wenjun Zhou, Claudia Li, Zhigang Wang, Feiyang Hu, Tianchang Wang, Ziwei Li, Anjiang Tang, Michael P. Harold, Shaomin Liu, Sibudjing Kawi
Summary: In this study, a water-conducting LTA membrane with well-distributed non-penetrative macroholes was prepared, resulting in a cheese-like structure that combines the advantages of micro-nanochannels for high water selective permeability and macroholes for quick water diffusion. The optimized SH-LTA membranes showed high water permeability and good stability, with permeances of methanol, H2, and CO2. The dissolution-recrystallization route of the SH morphology was confirmed, and molecular dynamics simulations were used to elucidate the superior water separation behavior in the SH-LTA membrane compared to the pristine LTA membrane.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Wenjing Tang, Bojun Li, Huaqing Liu, Ting Liang, Pei Li, Changwei Zhao, Xiang Li, Shaomin Liu
Summary: In this study, ss-cyclodextrin based polyester membranes with superior chlorine resistance and antifouling properties were successfully developed. The optimized membrane exhibited excellent long-term stability, salt retention, and water permeability.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Physical
Gonghe Tong, Yanbin Li, Zhigang Wang, Xiaoyao Tan
Summary: Micro-tubular protonic ceramic fuel cells (MT-PCFCs) have advantages in terms of intermediate operating temperature, large volumetric power density, and low sealing requirements. This study successfully fabricates high-performance MT-PCFCs using a one-step fabrication method, achieving a peak power density of 601.2 mW cm-2 for a single cell and a power output of 2.5 W for a cell stack.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Inorganic & Nuclear
Yuepeng Hei, Zuojun Lu, Claudia Li, Jian Song, Bo Meng, Naitao Yang, Sibudjing Kawi, Jaka Sunarso, Xiaoyao Tan, Shaomin Liu
Summary: In this study, Ce0.8Y0.2O2-delta-BaCe0.8Y0.2O3-delta (YDC-BCY) hollow fiber (HF) membranes were developed and characterized for their hydrogen (H-2) permeation fluxes. By synthesizing YDC and BCY ceramic powders using the sol-gel method and fabricating YDC-BCY dual-phase ceramic HF membranes, it was found that the YDC/BCY molar ratio of 4:1 exhibited the highest hydrogen flux under certain conditions.
Article
Chemistry, Analytical
Xihui Bian, Zizhen Zhao, Jianwen Liu, Peng Liu, Huibing Shi, Xiaoyao Tan
Summary: A novel method combining the discretized butterfly optimization algorithm-partial least squares (BOA-PLS) and near-infrared (NIR) spectroscopy is proposed for the rapid determination of blood cholesterol concentration. The results show that the improved V-shaped (I-V) function is the best transfer function for discretization. Preprocessing and variable selection methods based on BOA can improve the prediction performance of PLS. The MSC-MMS can further enhance the predictive accuracy of I-V-BOA-PLS.
ANALYTICAL METHODS
(2023)