Preoxidation-assisted nitrogen enrichment strategy to decorate porous carbon spheres for catalytic adsorption/oxidation of methyl mercaptan

Zhang, Changming; Wang, Yaqi; Zhang, Xiaochao; Wang, Rongxian; Kou, Lifang; Fan, Caimei

doi:10.1039/d0ra07375j

Cited by 7 publications

(1 citation statement)

References 55 publications

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“…In Fig. 3, the curve ttings of the N1s spectra yield ve main components with binding energies at 397.9, 399.2, 400.6, 401.7 and 402.8 eV, which can be assigned to pyridinic nitrogen, amide, pyrrolic nitrogen, quaternary nitrogen and nitrogen oxide, respectively (Zhang et al, 2016;Zhang et al, 2020;Raymundo-Piñero et al, 2003).…”

Section: Resultsmentioning

confidence: 99%

Hierarcal porous polystyrene-based activated carbon spheres for CO2 capture

Ren

Zhang

Kou

et al. 2021

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Activated carbon spheres with high specific surface area and hierarcal porous texture were prepared from polystyrene-based macroreticular resin spheres by air pre-oxidization and steam activation. The as-prepared carbon spheres had a specific surface area of 1274.95 m2 g− 1, total pore volume of 1.09 cm3 g− 1 and micropore volume of 0.47 cm3 g− 1. Moreover, these carbon spheres showed a hierarcal porous texture composed of ultrafine micropores (0.5-1 nm), micropores (1–2 nm), mesopores (10–50 nm) and macropores (50–100 nm). A CO2 adsorption capacity of 2.82 mmol g− 1 for carbon spheres can be obtained at 30 ℃ and 1 atm. Further, after introducing nitrogen-containing functional groups by gaseous ammonia at 600 ℃, these carbon spheres exhibited a high CO2 adsorption capacity of 3.2 mmol g− 1. In addition, excellent cyclic stability, low hygroscopicity and regenerability temperature suggested these carbon spheres were favorable for CO2 capture.

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Section: Resultsmentioning

confidence: 99%