Journal of Cleaner Production
·
2017
·
IF 5.715
Xianglong Meng,Lu Li,Kan Li,Pin Zhou,Hongbo Zhang,Jinping Jia,Tonghua Sun
A facile transportation fuel reductive and extractive desulfurization process is studied using polyethylene glycol as extraction solvent , which is economical and environmental friendly, and sodium borohydride as reductant in this work. Several important parameters including sodium borohydride and nickel chloride dosage, stirring rate, temperature and polyethylene glycol/oil volume ratio are investigated. The total sulfur desulfurization efficiency for the simulated fuel reaches nearly 97% in this process after 1 h reaction at the temperature of 10 °C with sodium borohydride/sulfur molar ratio = 15, nickel chloride/sulfur molar ratio = 3, polyethylene glycol/oil volume ratio = 1. Furthermore, the desulfurization efficiency can be enhanced to 99% in a two-step desulfurization process. All components were detected by GC or GC-MS, and the possible desulfurization mechanism is deduced. The results show that sulfur compounds can be removed by direct desulfurization. The desulfurization performance of recycled polyethylene glycol and regenerated polyethylene glycol was also investigated and the desulfurization efficiency was 92% and 90% respectively, indicating polyethylene glycol can be regenerated in this process. Finally, actual transportation fuels (e.g. gasoline, diesel) were investigated and it revealed that polyethylene glycol and sodium borohydride can be applied in actual fuel extractive and reductive desulfurization.
研究领域:
化学工程
·
环境科学
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2014
·
IF 3.065
Ji-Ming Song,Cheng-Cheng Liu,Song-Song Zhang,He-Lin Niu,Chang-Jie Mao,Sheng-Yi Zhang,Yu-Hua Shen
Adsorption is an effective method of removing contaminants from water, however, desorption often becomes more difficult after adsorption process, due to the strong binding force between the adsorbent and pollutants, so that the desorbent cannot be reused. In this paper, Co 0.85 Se nanosheets prepared through a hydrothermal reaction have been used to remove cationic dye methylene blue from aqueous solution in the presence of sodium borohydride. The results show that adsorption/desorption properties of the Co 0.85 Se nanosheets to MB can be greatly changed in the presence/absence of sodium borohydride (NaBH 4 ), and the equilibration time of the adsorption/desorption depends on the amount of NaBH 4 . When NaBH 4 or Co 0.85 Se nanosheets existed together, the residual quantity of MB in solution was less than one-twentieth of that in the system alone using either NaBH 4 or Co 0.85 Se nanosheets; while a large number of MB (ca.90%) was released once again into the solution after NaBH 4 was decomposed because of catalysis of Co 0.85 Se. The zeta potential and pH tests have been elucidated the mechanism for the adsorption of MB onto Co 0.85 Se nanosheets. The efficient adsorption and recovery of dyes indicate that the prepared Co 0.85 Se nanosheets have potential application in wastewater treatment under the assistance of NaBH 4 .
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Deyu Tang,Jiaguang Zheng,Chengguo Yan,Ao Xia,Wei Kong,Arkadii Proskurin,Xiuzhen Wang
Sodium borohydride (NaBH 4 ) has long been regarded as a cost-effective hydrogen storage material with a theoretical hydrogen storage capacity of 10.6 wt%. However, its practical application is hindered by thermodynamic stability, and traditional hydrogen production from NaBH 4 required excess water, which lowered its volumetric and gravimetric capacities. In this study, for the first time, solid-state glycolic acid (GA) was used to destabilize NaBH 4 for producing hydrogen. According to the results, NaBH 4 -GA started releasing hydrogen rapidly from room temperature and more than 3.6 wt% hydrogen was produced below 100 ℃ with efficient hydrogen utilization rate of 95 %. Moreover, NaBH 4 -GA composites maintained solid-state through the entire dehydrogenation process with high volumetric capacity above 39 g H 2 L −1 . Through the evolution of bonding structures and composition in NaBH 4 -GA composites, the dehydrogenation process was further confirmed as similar to the hydrolysis process of NaBH 4 , but with no liquid appearing. This chemical process “solid-state hydrolysis” may offer potential application and novel insights in low-temperature solid-state hydrogen storage using NaBH 4 .
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
ENERGY & FUELS
·
2020
·
IF 3.421
Fanghui Wang,Yimeng Luo,Yajun Zhang,Yanan Wang,Hong Zhu
A NiO–Ni foam composite carrier was prepared by the hydrothermal method. Ruthenium metal was supported on the NiO–Ni foam by electroplating, obtaining a highly active bush-like Ru/NiO–Ni foam catalyst. To investigate the effect of NiO on the structure and performance of the catalyst, a Ru/Ni foam catalyst was prepared as a reference. The structures of the carrier and both catalysts were characterized by X-ray diffraction, scanning electron microscopy, and X-ray photoelectron spectroscopy, and the performances of both catalysts were evaluated in alcoholytic hydrogen production from sodium borohydride. On the carrier with the NiO-treated surface, the active component Ru developed a three-dimensional bush-like structure that enhanced the catalytic activity. Indeed, the hydrogen production from alcoholysis of sodium borohydride was three times higher on the Ru/NiO–Ni foam catalyst than on the Ru/Ni foam catalyst, and the highest rate exceeded 6 L/g/min. The repeated-use stability of the Ru/NiO–Ni catalyst (10 times) also exceeded that of Ru/Ni foam (8 times). However, as both catalysts used the same active component (i.e., Ru), their activation energies were almost identical.
研究领域:
材料科学
·
催化化学
✓ 已验证
DOI
高影响因子
Scientific Reports
·
2020
·Vol. 10
·期 1
·1-9
·
IF 3.998
Meng Xianglong,Zhou Pin,Li Lu,Liu Lizhong,Guo Mingming,Sun Tonghua
The selectivity of a facile reductive and extractive desulfurization process was studied. In this desulfurization method, polyethylene glycol was used as the extractant, and sodium borohydride was used as the reductant. Several different simulated fuels were prepared by dissolving thiophenic sulfides, methylbenzene and hexylene in octane. The results showed that methylbenzene and olefins had different effects on different sulfur compounds during this desulfurization process. The extraction and reduction mechanisms were also explained. Four factors could affect the desulfurization performance: (1) intermolecular hydrogen bonding: (a) active O bonding with aromatic H or (b) S bonding with H atoms in hydroxide radicals, (2) “like-dissolves-like” interactions between polyethylene glycol and thiophenic sulfides, (3) the methyl steric hindrance effect and the electron density of sulfur atoms, and (4) the combination of S atoms with produced nickel boride to form active desulfurization centres. The desulfurization reaction path was also deduced according to the GC/MS results.
研究领域:
化学工程
·
环境科学
✓ 已验证
DOI
PubMed
高影响因子
Functional Materials Letters
·
2019
·
IF 1.388
Lei Wei,Hongyan Liu,Qian Wang,Wenjuan Li,Lufeng Peng
Cobalt-based catalysts are highly efficient and low-cost for sodium borohydride (NaBH 4 ) hydrolysis to generate hydrogen. Co 3 O 4 and carbon-supported metal Co (i.e., Co/C) catalysts were prepared by means of ZIF-67 pyrolysis. Effects of pyrolysis temperature and atmosphere on catalyst composition and performance were mainly investigated. For material analyses, a series of characterizations were carried out including FE-SEM, TEM, XRD, BET, TGA and ICP-AES. Conventional water-displacement method was employed to evaluate the catalyst performance toward NaBH 4 hydrolysis. Experimental results indicated that catalytic activity of the Co 3 O 4 was much higher than that of Co/C, and the reasons were discussed in detail.
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
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Qing Guo,Xiulin Wang,Fan Yang,Shuhui Zhou,Kexin Wei,Yu Zhang,Li Sun,Siyuan Sun,Hongchen Liu,Junpu An,Yang Sun,Peidi Shen,Yongfeng Li
Rational design and preparation of single-atoms (SAs) catalysts with high atom efficiency and anion intercalation offer a promising way to enhancing the catalytic activity of sodium borohydride (NaBH 4 ) hydrolysis. Herein, Pt SAs loaded on borate anion-intercalated Co(OH) 2 nanoflakes (Pt/Co(OH) 2 -B) were synthesized by boron-assisted method and wet impregnation method, achieving a massive metal loading of 9.8 % for the Pt SAs through the oxidation of Co(OH) 2 -B. The optimal catalyst loaded with 6.1 % Pt SAs (Pt M /Co(OH) 2 -B) has a turnover frequency (TOF) of 956.34 mol H2 min - 1 mol Pt -1 , a hydrogen generation rate (HGR) of 9315 mL min - 1 g -1 cat at 30 °C, and a low activation energy of 47.31 kJ mol - 1 for NaBH 4 hydrolysis, outperforming most of the reported noble metal catalysts. The Co element attracts the electrons of Pt SAs, causing Pt SAs to be in an electron-deficient state, which accelerates the adsorption of H 2 O and promotes the hydrolysis rate of NaBH 4 . The remarkable performance is primarily attributed to the synergistic interaction between Pt SAs and α-Co(OH) 2 -B, with a slight shift in the d-band center optimizing the electronic structure of the hydrolysis reaction and reducing the binding energy, thereby achieving exceptional catalytic performance. Density functional theory (DFT) calculations demonstrate that the electronic synergistic interaction between Pt and α-Co(OH) 2 -B reduces the adsorption energy of BH 4 - and H 2 O. The interaction further lowers the energy barrier of B-H bond cleavage as the rate-determining step, thereby accelerating the hydrolysis rate of NaBH 4 . This work provides an innovative approach for the development of green hydrogen production catalysts.
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
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2020
·
IF 4.939
Chuanmin Ding,Zhiting Gao,Junwen Wang,Lichao Ma,Ju Shangguan,Qinbo Yuan,Ming Zhao,Kan Zhang
Efficient hydrogen storage, transportation and generation are key-technology for future hydrogen economy . Sodium borohydride (NaBH 4 ) stands out as promising hydrogen energy carrier with merits of high volumetric density and environmentally benign hydrolysis products. Flower-like layered double hydroxide α-Co(OH) 2 with intercalation of B species was synthesized via hydrothermal crystallization method using sodium tetraphenylboron as source of B and alkaline, which makes it different from the previous supporting materials. Pure or mixed cobalt oxides with different valence states containing B (CoO/B, Co 3 O 4 /B, Co+CoO/B, CoO+Co 3 O 4 /B) were subtly prepared via controlling calcination temperature, time and atmosphere for sodium borohydride hydrolysis. Coral-like CoO+Co 3 O 4 /B displayed superior hydrogen generation rate (6478 ml H2 ·min −1 ·g −1 metal ) with arrhenius activation energies of 41.14 kJ/mol for NaBH 4 hydrolysis in alkaline solutions compared to those reported pure precious metals. The out-standing catalytic performance of CoO+Co 3 O 4 /B may be attributed to electron transfer among cobalt oxide. DFT calculation indicates NaBH 4 hydrolysis undergoes a reaction path on CoO+Co 3 O 4 surface with lower relative energies.
研究领域:
材料科学
·
能源化学
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2022
·Vol. 12
·期 15
·2550
·
IF 5.719
Yuqian Yu,Li Kang,Lixian Sun,Fen Xu,Hongge Pan,Zhen Sang,Chenchen Zhang,Xinlei Jia,Qingli Sui,Yiting Bu,Dan Cai,Yongpeng Xia,Kexiang Zhang,Bin Li
Sodium borohydride (NaBH4), with a high theoretical hydrogen content (10.8 wt%) and safe characteristics, has been widely employed to produce hydrogen based on hydrolysis reactions. In this work, a porous titanium oxide cage (PTOC) has been synthesized by a one-step hydrothermal method using NH2-MIL-125 as the template and L-alanine as the coordination agent. Due to the evenly distributed PtNi alloy particles with more catalytically active sites, and the synergistic effect between the PTOC and PtNi alloy particles, the PtNi/PTOC catalyst presents a high hydrogen generation rate (10,164.3 mL∙min−1∙g−1) and low activation energy (28.7 kJ∙mol−1). Furthermore, the robust porous structure of PTOC effectively suppresses the agglomeration issue; thus, the PtNi/PTOC catalyst retains 87.8% of the initial catalytic activity after eight cycles. These results indicate that the PtNi/PTOC catalyst has broad applications for the hydrolysis of borohydride.Keywords:hydrogen generation;porous titanium oxide cage;PtNi nanoparticles;sodium borohydride hydrolysis
研究领域:
材料科学
·
催化化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CATALYSIS LETTERS
·
2021
·Vol. 152
·期 5
·1386-1391
·
IF 3.186
Zhang Jiapeng,Li Yilin,Yang Lijing,Zhang Fengming,Li Ran,Dong Hua
A monolithic complexed catalyst composed of a piece of Co foam decorated with Ru nanosheets has been fabricated. This catalyst has demonstrated excellent performance in catalyzing NaBH 4 hydrolysis under alkaline conditions. Most importantly, the bulky size of the developed catalyst provides convenience to control the start and stop of hydrogen production by manipulating the attachment and detachment between the catalyst and NaBH 4 solution. These features endow this catalyst with great potential for on-site hydrogen supply. Graphic Abstract
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
HYDROMETALLURGY
·
2023
·
IF 4.7
Anyang Tang,Jiahe Zhang,Huazhen Cao,Huibin Zhang,Guoqu Zheng
The synthesis of refractory rhenium (Re) powders is significant for the production of rhenic products. In this work, the ultra-fine Re nanoparticles were synthesized via a combination of aqueous-phase reduction and rapid hydrogen reduction using NH 4 ReO 4 as Re source. The theoretical reduction route was determined by investigating the Eh-pH diagram of the Re -H 2 O system and conducting thermodynamic calculations. The optimal results were achieved by adjusting the experimental parameters like acid type, initial acidity, molar ratio of BH 4 − : ReO 4 − , feed rate of reductant, reaction temperature (T), and reaction time (t). The amorphous Re powders with minor oxide inclusions can be prepared under the optimized conditions of [HCl] = 1.35 mol L −1 , BH 4 − : ReO 4 − molar ratio = 5.32, feed rate = 15 mL min −1 , reaction temperature = 30 °C, and reaction time = 30 min. The maximum reduction efficiency reaches 99.5%. After annealing in hydrogen for 30 min, the crystalline Re nanoparticles with low oxygen content can be obtained. This work demonstrates the feasibility and efficacy of rapidly synthesizing ultra-fine Re nanoparticles in a solution-based approach.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2019
·
IF 4.084
Yanhui Guo,Ruiqi Zhang,Weiju Hao,Jiankan Zhang,Yanjing Yang
The development of efficient and non-noble catalyst is of great significance to hydrogen generation techniques. Three surface-oxidized cobalt borides of Co–B–O@Co x B (x = 0.5, 1 and 2) have been synthesized that can functionalize as active catalysts in both alkaline water electrolysis and the hydrolysis of sodium borohydride (NaBH 4 ) solution. It is discovered that oxidation layer and low boron content favor the oxygen evolution reaction (OER) activity of Co–B–O@Co x B in alkaline water electrolysis. And surface-oxidized cobalt boride with low boron content is more active toward hydrolysis of NaBH 4 solution. An alkaline electrolyzer fabricated using the optimized electrodes of Co–B–O@CoB 2 /Ni as cathode and Co–B–O@Co 2 B/Ni as anode can deliver current density of 10 mA cm −2 at 1.54 V for overall water splitting with satisfactory stability. Meanwhile, Co–B–O@Co 2 B affords the highest hydrogen generation rate of 3.85 L min −1 g −1 for hydrolysis of NaBH 4 at 25 °C.
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
危险品化学品经营许可证（带存储）