Confined Jet Impingement Continuous Microchannel Reactor Synthesis of Ultrahigh-Quality Mesoporous Silica Nanospheres for CO2 Capture

• DOI: 10.1021/acs.iecr.2c00947
• Publication Date: 2022-06-27T07:11:57Z
• Authors: Qiang Chen; Kai Chen; Feng Yu; Aixia Guo; Siqing Zou; Mei Zhou; Jiangwei Li; Jianming Dan; Yongsheng Li; Bin Dai; Xuhong Guo
• Keywords: Specific surface area; Particle (ecology); Microchannel

Li4SiO4 has been evaluated as one of the most promising CO2 absorbers to mitigate climate changes caused by excessive emissions. absorbents with a high specific surface area would hold higher capture capacity. However, lack suitable SiO2 precursors, synthesis and well-defined hollow sphere structure was still challenging. Here, two-stream confined jet impingement continuous microchannel reactor proposed produce ultrahigh-quality mesoporous silica nanospheres (UHMSNs) an ultrahigh small particle size. The obtained UHMSNs possessed excellent water dispersibility, uniform diameter (142–207 nm), tunable perpendicular mesopores (2.6–3.3 (1347∼1854 m2/g), large pore volume 0.86∼1.23 cm3/g). Moreover, MesoDyn simulation provided valuable information optimize nucleation stage crystallization UHMSNs. Additionally, were used silicon source synthesize petal-like microspheres, which enhanced adsorption.