Synthesis and CO2 adsorption performance of high Si/Al ratio DDR zeolites prepared from silica fume

Peng, Zhonghao; Liu, Ze; Gao, Yu; Liu, Jiayu; Wang, Dongmin; Liu, Hongying; Zhang, Yanbo; Li, Li

doi:10.1016/j.jece.2023.110837

Cited by 6 publications

(3 citation statements)

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“…Therefore, using coal gangue as a resource is of great importance with regards to environmental protection, the utilization of waste resources and the sustainable development of society. At present, the utilization of CG in China is not high; the treatment of CG is mainly focused on basic applications, such as the production of building materials and extraction of chemical products, and agricultural applications [6][7][8][9][10][11]. Realizing the resource utilization of solid waste CG is an important direction for comprehensive technical utilization of CG [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

“…At present, the utilization of CG in China is not high; the treatment of CG is mainly focused on basic applications, such as the production of building materials and extraction of chemical products, and agricultural applications [6][7][8][9][10][11]. Realizing the resource utilization of solid waste CG is an important direction for comprehensive technical utilization of CG [7][8][9]. In addition to achieving green development in the coal industry, efficient coal gangue treatment and utilization can also result in the recycling of secondary resources.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, search for an inexpensive material to synthesize alumina aerogel is very much needed. Utilizing CG to create aluminum-based aerogel material has the potential to significantly lessen and render harmless the solid waste coal gangue, as well as ease the nation's energy and resource shortage [8]. This has far-reaching implications for the development of a resource-conscious society, in keeping with the modern industrial development concept.…”

Section: Introductionmentioning

confidence: 99%

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Fiber-Reinforced Coal Gangue-Based Alumina Aerogel Composites with Highly Thermal Stability by Ambient Pressure Drying

Bo,

Liu,

Zhang

et al. 2024

Sustainability

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An aluminum silicate fiber/alumina aerogel (ASF/AA) composite was prepared via the sol-gel method and atmospheric drying (APD) method using coal gangue (CG) solid waste from Xingxian county, Shanxi Province, as the aluminum source. Utilizing N2 adsorption, scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, and thermal conductivity meters, researchers examined the microstructure, composition, pore structure, and thermal insulation performance of ASF/AA composites. The thermal conductivity mechanism of the composite was analyzed. The experimental results show that most of the aluminum in CG is used. More importantly, in the process of aerogel synthesis, the atmospheric pressure drying method is used to obtain similar properties to supercritical drying. The composite material exhibits a low thermal conductivity of 0.047 W/(m·K), a high specific surface area of 416 m2/g, and a low density of 0.26 g/cm3 at room temperature. After heating at 1200 °C for 2 h, the thermal conductivity was as low as 0.071 W/(m·K). This strategy can not only effectively achieve a reduction in the harmfulness of solid waste coal gangue, but also alleviate the shortage of related energy and resources in our country.

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