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Solvothermal Synthesis of FDU-12 Derived Ni-Phyllosilicate Using Double Solvent of H.sub.2O and n-Pentane
Ist Teil von
Catalysis letters, 2022-05, Vol.152 (5), p.1488
Ort / Verlag
Springer
Erscheinungsjahr
2022
Link zum Volltext
Quelle
SpringerLink (Online service)
Beschreibungen/Notizen
In order to inhibit the serious damage of pore structure of silica template during the conventional hydrothermal method to prepare Ni-phyllosilicate material, a solvothermal method using double solvent, a small amount of water and a large amount of hydrophobic n-pentane, was proposed to synthesize FDU-12 derived Ni-phyllosilicate in this work. Water can infiltrate the inside channels of FDU-12 owing to more hydrophilic silica hydroxyl groups, and the hydrophobic n-pentane tends to surround the outside of FDU-12. The growth of Ni-phyllosilicate occured only inside channels rather than surface, and the addition of urea could improve its formation at 180 °C in 12 h. As a result, the optimal catalyst retained the pore structure of FDU-12 and obtained fine Ni particle size of 1.5 nm after 750 °C reduction in H.sub.2 flow, which exhibited CO.sub.2 conversion of 77.0% and CH.sub.4 selectivity of 94.7% at 450 °C, 60 L·g.sup.-1·h.sup.-1. In addition, this catalyst showed high long-term stability in a 100 h-lifetime test with high anti-sintering property derived from Ni-phyllosilicate.