Synthesis of A Mesoporous Silica from Coal Slag on the basis of a CO2 release method and Its Adsorption Properties to Phenol.
Synthesis of A Mesoporous Silica from Coal Slag on the basis of a CO2 release method and Its Adsorption Properties to Phenol.
复制标题
基于CO释放法的煤渣合成介孔二氧化硅及其对苯酚的吸附性能
DOI：
10.1016/j.jclepro.2018.10.212
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Jianbin Zhang
中科院分区：
文献类型：
--
作者：
Xinyu Yang;Jianbin Zhang
利用煤渣是一种有吸引力的、可再生的、环境友好的方法，有助于缓解能源短缺和阻止环境恶化。以煤渣为原料，通过水热法与co2储存材料（CO2SM）释放的co2反应合成介孔二氧化硅（MS）。系统考察了初始pH、合成温度、合成时间、十六烷基三甲基溴化铵（CTAB）浓度、CO2SM用量等5个关键条件，优化了质谱的合成，并对质谱吸附苯酚的动力学模型和热力学分析进行了系统探讨。结果表明，MS对苯酚的吸附量为106.2 mg/g。经8次循环后，质谱对苯酚的吸附效果良好。本研究为优化煤渣利用开辟了一条新途径，为通过大量捕获CO2来缓解温室效应提供了一条有希望的途径。此外，所合成的质谱还有望作为市售的代用品。
Utilization of coal slag, a waste generated from coal combustion, is an attractive, renewable, and environmentally friendly approach to helps ease energy shortage and stop environmental deterioration. Coal slag was used to synthesize mesoporous silica (MS) by reacting with CO2released from a CO2-storage material (CO2SM) in a hydrothermal process. Five key conditions including initial pH, synthesis temperature and time, cetyltrimethyl ammonium bromide (CTAB) concentration, and CO2SM dosage were systematically investigated to optimize the synthesis of MS. Additionally, kinetic models and thermodynamic analyses for phenol adsorption by MS were systemically explored. Results showed that the MS exhibited a phenol adsorption amount of 106.2 mg/g. The MS could be recycled and reused, showing a good phenol adsorption after eight cycles. The current study opens a new approach to optimize the utilization of coal slag and provides a promising way to mitigate the greenhouse effect by substantially capturing CO2. In addition, the synthesized MS is promising to be used as a substitute commercially available.