Synthesis of an emerging morpholine-typed Gemini surfactant and its application in reverse flotation carnallite ore for production of potash fertilizer at low temperature

Cheng, Chen; Huang, Zhiqiang; Zhang, Ruirui; Zhou, Jianrong; Liu, Zuwen; Zhong, Hong; Wang, Hongling; Kang, Zhongmin; He, Guichun; Yu, Xinyang; Ren, Zijie; Qiu, Tingsheng; Hu, Yuling; Fu, Weng

doi:10.1016/j.jclepro.2020.121121

Cited by 60 publications

(15 citation statements)

References 41 publications

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“…et al, 2020 ). Furthermore, environmental pollution and energy shortages are becoming exacerbated (Cheng C. et al, 2020 ; Chuanchang et al, 2020 ; Huang et al, 2020a ; Yang et al, 2020 ). Therefore, new energy development technologies have received widespread attention (Huang et al, 2020b ; Wang D. et al, 2020 ; Liu et al, 2021 ; Nie et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Synergistic Catalysis of SnO2-CNTs Composite for VO2+/VO2+ and V2+/V3+ Redox Reactions

et al. 2021

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In this study, a SnO2-carbon nanotube (SnO2-CNT) composite as a catalyst for vanadium redox flow battery (VRFB) was prepared using a sol-gel method. The effects of this composite on the electrochemical performance of VO2+/VO2+, and on the V2+/V3+ redox reactions and VRFB performance were investigated. The SnO2-CNT composite has better catalytic activity than pure SnO2 and CNT due to the synergistic catalysis of SnO2 and the CNT. SnO2 mainly provides the catalytic active sites and the CNTs mainly provide the three-dimensional structure and high electrical conductivity. Therefore, the SnO2-CNT composite has a larger specific surface area and an excellent synergistic catalytic performance. For cell performance, it was found that the SnO2-CNT cell shows a greater discharge capacity and energy efficiency. In particular, at 150 mA cm−2, the discharge capacity of the SnO2-CNT cell is 28.6 mAh higher than that of the pristine cell. The energy efficiency of the modified cell (7%) is 7.2% higher than that of the pristine cell (62.8%). This study shows that the SnO2-CNT is an efficient and promising catalyst for VRFB.

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Section: Introductionmentioning

confidence: 99%

Synergistic Catalysis of SnO2-CNTs Composite for VO2+/VO2+ and V2+/V3+ Redox Reactions

et al. 2021

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“…When the pH was 10.0, the zeta potential of the quartz changed from −41.8 mV to 44 mV, a variation of 85.8 mV. As an amine cation collector, the enamine can exchange and adsorb the hydrolysate RNH + 3 or RNH 2 • RNH + 3 with the surface of the quartz under acidic and neutral conditions [20,21], causing the zeta potential of the quartz surface to shift positively. Under alkaline conditions, the enamine is mainly in the form of amine molecules, RNH + 3 concentration decreases, and OHconcentration increases in solution.…”

Section: Infrared Analysis Of the Influence Of Enamine Collectors On mentioning

confidence: 99%

Behavior and mechanism of enamine on quartz flotation

Jing¹,

He²,

Wu³

et al. 2020

ScienceAsia

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The mechanism of enamine on a quartz surface was investigated by pure mineral flotation tests combined with quartz surface wettability measurements, zeta potential tests and other analytical methods. The results show that the enamine flotation system had a quartz flotation pH range of 6.0-8.0 and a suitable collector concentration of 50 mg/L. Under neutral conditions, when the collector concentration was low, the enamine was adsorbed on the quartz surface through a weak electrostatic force. Semi-micelle adsorption occurred when the collector concentration reached the critical micelle concentration value of 10 mg/L. At enamine concentrations higher than 50 mg/L, multilayer adsorption of enamine and quartz occurred. The infrared spectroscopy results showed that no new peaks were formed before and after the interaction between quartz and enamine and that the enamine was mainly physically adsorbed on the quartz surface.

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“…The excessive use of fossil fuels has resulted in an increasing depletion of energy resources and significant damage to the environment ( Cheng et al, 2020 ; Huang et al, 2020 ; Liu et al, 2020 ; Li et al, 2021 ; Wang et al, 2021 ). Hence, the development of new energy sources for environmental protection is a critical issue ( Wang T. et al, 2020 ; Chuanchang et al, 2020 ; Fang et al, 2020 ; He et al, 2020 ; Yang et al, 2020 ; Liu et al, 2021 ; Nie et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Enhanced Catalysis of P-doped SnO2 for the V2+/V3+ Redox Reaction in Vanadium Redox Flow Battery

Feng

Zhang

et al. 2021

Front. Chem.

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In this work, nanosized P-doped SnO2 (SnO2-P) was prepared by a sol–gel method as a catalyst for the V3+/V2+ redox reaction in vanadium redox flow battery. Compared with SnO2, the electrochemical performance of SnO2-P is significantly improved. This is because P doping provides more active sites and shows greatly improved electrical conductivity, thereby increasing the electron transfer rate. As a result, SnO2-P shows better catalytic performance than SnO2. The SnO2-P modified cell is designed, and it exhibits an increase of 47.2 mA h in discharge capacity and 8.7% in energy efficiency compared with the pristine cell at 150 mA cm−2. These increases indicate that the modified cell has a higher electrolyte utilization rate. This study shows that SnO2-P is a new and efficient catalyst for vanadium redox flow battery.

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Synthesis of an emerging morpholine-typed Gemini surfactant and its application in reverse flotation carnallite ore for production of potash fertilizer at low temperature

Cited by 60 publications

References 41 publications

Synergistic Catalysis of SnO2-CNTs Composite for VO2+/VO2+ and V2+/V3+ Redox Reactions

Synergistic Catalysis of SnO2-CNTs Composite for VO2+/VO2+ and V2+/V3+ Redox Reactions

Behavior and mechanism of enamine on quartz flotation

Enhanced Catalysis of P-doped SnO2 for the V2+/V3+ Redox Reaction in Vanadium Redox Flow Battery

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