Article
Engineering, Chemical
Fang Li, Jia Li, Luyao Chen, Yanmei Dong, Pinhong Xie, Qiming Li
Summary: A stable and efficient supported CoB catalyst with excellent catalytic performance and cycling stability has been successfully developed for hydrogen production from NaBH4 hydrolysis. The as-prepared CoB/PANI composite catalyst exhibits high hydrogen production rate and low activation energy, showing great potential in practical applications.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
Article
Chemistry, Physical
Jinlin Song, Ran Li, Hua Dong
Summary: The addition of cheap and environment-friendly acetic acid (CH3COOH) into NaBH4 solutions stabilized with NaOH can significantly accelerate the hydrolysis reaction and control the start/stop of the reaction by adding acid or base into the solution, enabling on-site hydrogen production. This finding is of great significance for efficient and convenient hydrogen production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Jiale Shen, Danyun Xu, Jian Ji, Qicheng Zhang, Xiaobin Fan
Summary: A facile method is developed to synthesize defects-rich TiO2 supported CoB nanoparticles (CoB/TiO2-x) for efficient NaBH4 hydrolysis. The as-synthesized CoB/TiO2-x catalyst exhibits good catalytic performance with a hydrogen generation rate of 3070 mL min-1 gCo-1 and an activation energy of 57.03 kJ mol-1.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Engineering, Chemical
Kai Yan, Peisen Huang, Mingzhu Xia, Xingen Xie, Lin Sun, Wu Lei, Fengyun Wang
Summary: This study used electrodialysis and electrodeposition combined method to treat the spent electroless nickel plating bath, and the experimental results showed that this method has the ability of high recovery of Ni2+ and removal of HPO32-, with low energy consumption.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Yuxin Yang, Xinzhong Li, Xiao Liang, Ruirun Chen, Jingjie Guo, Hengzhi Fu, Dongmei Liu
Summary: Thin Pd membranes were prepared using a two-step electroless plating method and the effects of heat treatment on membrane performance were investigated. The results showed that Pd membranes prepared with high-temperature heat treatment exhibited the best performance, with high hydrogen permeation flux and selectivity.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Physical
Seda Hosgun, Mine Ozdemir, Yeliz Buruk Sahin
Summary: This study utilized halloysite as a support material for catalytic activity enhancement and reusability improvement of a Co metal-based system in the hydrolysis of NaBH4. The optimal reaction conditions were determined to achieve maximum hydrogen generation rate, and response surface methodology was employed for optimization.
CLAYS AND CLAY MINERALS
(2021)
Article
Chemistry, Physical
Asim Balbay, Nuran Selvitepe, Cafer Saka
Summary: This study explored the use of modified montmorillonite clay as a support material for Co-B and Co-Fe-B catalysts in hydrogen generation reactions. By investigating the effects of different acids and various parameters of the catalyst, optimal activation conditions and hydrogen generation efficiency were identified.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Jun-Yi Wang, Yen-Hsun Chi, Jin-Hua Huang
Summary: Sequential addition of hydrazine in an EDTA-free bath resulted in the fabrication of high-performance composite Pd membranes with improved selectivity and cycling stability compared to membranes made using EDTA-contained bath.
Article
Chemistry, Multidisciplinary
Qi Zhang, Ke Wang, Xianchun Chen, Xiaohong Tang, Qian Zhao, Qiang Fu
Summary: The study used electroless plating method to improve the thermal stability and functionality of bamboo fibers, resulting in an increase in initial degradation temperature and potential applications. The coating layer formed through plating can block external O2 invasion, delay degradation time and pyrolysis rate, while also improving hygroscopicity and electrical and magnetic properties.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Physical
Hongming Zhang, Yue Fan, Junrui Zhang, Xuezhang Xiao, Liuzhang Ouyang
Summary: A novel (Al-x%Li)-y%NaBH4 composite with a core-shell structure was prepared through one-step ball-milling method for hydrogen generation by hydrolysis. The Al-x%Li alloy particles were completely coated with a NaBH4 surface layer to prevent agglomeration and oxidation. The synergism between the Al-Li alloy and NaBH4 significantly enhanced the hydrogen generation rate of the composite. The composite showed outstanding hydrolysis capacity with near-stoichiometric CoCl2 solution, and the hydrogen emission exceeded 90% with only twice the amount of stoichiometric CoCl2 injection. The addition of a stoichiometric solution increased the hydrogen mass density from approximately 0.6 wt% to over 2.3 wt%, demonstrating the practical application of the portable fuel cell.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Ran Li, Hao Shi, Jinlin Song, Zihong Dong, Tao Wan, Hua Dong
Summary: In this study, a magnetically separable catalyst for promoting NaBH4 hydrolysis was developed by anchoring cobalt nanoparticles on magnetic dendritic KCC-1 nanospheres. The catalyst exhibited high catalytic activity under alkaline conditions and showed good recyclability. This development provides a promising option for portable hydrogen production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Faezeh Mirshafiee, Mehran Rezaei
Summary: In this study, cobalt nanocatalysts supported on Fe3O4@GO were synthesized and used to enhance hydrogen generation from the hydrolysis of sodium borohydride. The Co/Fe3O4@GO catalysts showed high catalytic activity, with a hydrogen generation rate of 4000 mL/min.gcat and good stability when loaded with 30 wt% cobalt. The Box-Behnken design under response surface methodology (RSM) was employed to investigate the effect of parameters on the hydrogen generation rate and identify the optimal reaction conditions. The Co/Fe3O4@GO catalyst exhibited a superior H2 generation rate of 6005 mL/min.gcat and low activation energy of 44.4 kJ/mol under the optimized conditions of temperature, catalyst loading, and NaBH4 concentration. The Co/Fe3O4@GO catalyst holds promise for NaBH4 hydrolysis due to its easy preparation and separation method, high hydrogen generation rate, and low activation energy.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Sultan Butun Sengel, Hatice Deveci, Vural Butun
Summary: Poly[2-(dimethylamino)ethyl methacrylate] cryogel beads were prepared as a catalyst for hydrogen production from NaBH4 by alcoholysis. The catalyst's efficiency was tested in the temperature range of 0-40°C and showed higher reaction rates for methanolysis compared to ethylene glycolysis. After six repetitions, the catalyst activity remained above 50% for both reactions. Published by Elsevier Ltd.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Yuxin Yang, Xinzhong Li, Xiao Liang, Ruirun Chen, Jingjie Guo, Hengzhi Fu, Dongmei Liu
Summary: Thin Pd membranes with a thickness of about 2 μm were prepared by a two-step electroless plating method on porous ceramic supports. The membranes exhibited stable and high hydrogen permeation flux and selectivity under different operating conditions. The effect of gas mixtures on the hydrogen permeation flux was studied, and the membranes also showed good resistance to attrition.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Green & Sustainable Science & Technology
Yaoxing Liu, Xiaoyu Wu, Xiaoyun Wu, Liping Dai, Jianguo Ding, Xin Ye, Riyao Chen, Rui Ding, Jianxi Liu, Yanchao Jin, Bart Van der Bruggen
Summary: This study used bipolar membrane electrodialysis (BMED) to effectively remove and recover Ni2+, NH4+, total phosphorus (TP), and NO3- from electroless nickel-plating (ENP) wastewater. The results showed that current density significantly influenced ion removal and recovery efficiency, energy consumption, and ion migration velocity. BMED system equipped with more wastewater compartments improved the recovery efficiency and reduced specific energy consumption. The recovered products were of satisfactory purity and similar physicochemical properties compared to commercial counterparts.
JOURNAL OF CLEANER PRODUCTION
(2023)