Thermodynamic and XRD analysis of reaction behaviors of gangue minerals in roasting mixture of scheelite and calcium carbonate for Ca3WO6 preparation

Li, Xiaobin; Xu, Xiangming; Zhou, Qiusheng; Qi, Tiangui; Liu, Guihua; Peng, Zhihong; Cui, Yuanfa; Li, Jianpu

doi:10.1016/j.ijrmhm.2016.07.007

Cited by 8 publications

(2 citation statements)

References 41 publications

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“…The component of coal gangue sample used in this work is mainly SiO 2 (53.1%), as shown in Table , which was kindly supplied by the Wujialiang coal preparation plant from Inner Mongolia province, China. To improve the properties, the sample was activated by calcination .…”

Section: Methodsmentioning

confidence: 99%

“…The developed process provides an alternative approach for the utilization of coal gangue which is of great significance for environmental protection and waste utilization. 27 as shown in Table 1, which was kindly supplied by the Wujialiang coal preparation plant from Inner Mongolia province, China. To improve the properties, the sample was activated by calcination.…”

Section: Introductionmentioning

confidence: 99%

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A Novel Mesoporous SiO₂ Material with MCM-41 Structure from Coal Gangue: Preparation, Ethylenediamine Modification, and Adsorption Properties for CO₂ Capture

Liu

et al. 2018

Energy Fuels

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A novel mesoporous SiO2 material (M-SiO2) with MCM-41 structure was readily fabricated from the inexpensive coal gangue via a hydrothermal reaction in the presence of cetyltrimethylammonium bromide (CTAB) for CO2 capture. On the basis of orthogonal experimental results, the optimum conditions for the preparation of M-SiO2 were identified as follows: the SiO3 2– leaching of 21 g/L from coal gangue, the CTAB concentration of 0.25 mol/L, the HCl concentration of 2.5 mol/L, the hydrothermal temperature of 393.15 K, and the hydrothermal time of 20 h. Under the optimum condition, the M-SiO2 exhibited an adsorption capability of 9.61 mg/g to 8% CO2 at 298.15 K. To further improve the CO2 adsorption performance, the M-SiO2 was chemically modified using ethylenediamine (EDA), and the optimum conditions for the modification of M-SiO2 were identified as follows: the impregnation time of 10 h, the drying temperature of 343.15 K, and the ratio of EDA/M-SiO2 = 2:1. Under the optimum conditions, the adsorption capability of EDA-modified M-SiO2 (EDA-M-SiO2) was increased by 83.5 mg/g. The obtained M-SiO2 and EDA-M-SiO2 were systemically characterized by N2 adsorption–desorption isotherms, thermogravimetric analysis, Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, and X-ray diffraction measurements techniques. The analytical results indicated that the M-SiO2 was mainly composed of O and Si in the form of SiO2 with a specific surface area of 156 m2/g, and part of M-SiO2 exhibited a structure similar to MCM-41. Moreover, the mechanisms of EDA modification and CO2 adsorption were investigated and discussed in detail.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Novel Mesoporous SiO₂ Material with MCM-41 Structure from Coal Gangue: Preparation, Ethylenediamine Modification, and Adsorption Properties for CO₂ Capture

Liu

et al. 2018

Energy Fuels

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Eco-friendly Copolymer Grafted Loess Particles for Rapid and Efficient Removal Pollutants in Wastewater

Zhang,

Yang,

Sun

et al. 2023

J Polym Environ

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Equilibrium WO3 concentration in the Ca2+-(NH4)2CO3-(NH4)2WO4-NH3-H2O system

Zhou

et al. 2019

Chemical Engineering Science

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Thermodynamic and XRD analysis of reaction behaviors of gangue minerals in roasting mixture of scheelite and calcium carbonate for Ca3WO6 preparation

Cited by 8 publications

References 41 publications

A Novel Mesoporous SiO₂ Material with MCM-41 Structure from Coal Gangue: Preparation, Ethylenediamine Modification, and Adsorption Properties for CO₂ Capture

A Novel Mesoporous SiO₂ Material with MCM-41 Structure from Coal Gangue: Preparation, Ethylenediamine Modification, and Adsorption Properties for CO₂ Capture

Eco-friendly Copolymer Grafted Loess Particles for Rapid and Efficient Removal Pollutants in Wastewater

Equilibrium WO3 concentration in the Ca2+-(NH4)2CO3-(NH4)2WO4-NH3-H2O system

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Thermodynamic and XRD analysis of reaction behaviors of gangue minerals in roasting mixture of scheelite and calcium carbonate for Ca3WO6 preparation

Cited by 8 publications

References 41 publications

A Novel Mesoporous SiO2 Material with MCM-41 Structure from Coal Gangue: Preparation, Ethylenediamine Modification, and Adsorption Properties for CO2 Capture

A Novel Mesoporous SiO2 Material with MCM-41 Structure from Coal Gangue: Preparation, Ethylenediamine Modification, and Adsorption Properties for CO2 Capture

Eco-friendly Copolymer Grafted Loess Particles for Rapid and Efficient Removal Pollutants in Wastewater

Equilibrium WO3 concentration in the Ca2+-(NH4)2CO3-(NH4)2WO4-NH3-H2O system

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Product

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A Novel Mesoporous SiO₂ Material with MCM-41 Structure from Coal Gangue: Preparation, Ethylenediamine Modification, and Adsorption Properties for CO₂ Capture

A Novel Mesoporous SiO₂ Material with MCM-41 Structure from Coal Gangue: Preparation, Ethylenediamine Modification, and Adsorption Properties for CO₂ Capture