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Nickel Oxide-Impregnated Phosphated Silica Catalyst: Synthesis and Application for Ethanol Dehydration into Diethyl Ether (DEE)

2024; Scientific.net; Volume: 365; Linguagem: Inglês

10.4028/p-qo2jwa

1662-9787

Mumu Mujtahid Fatwa, Aldino Javier Saviola, Mokhammad Fajar Pradipta, Riska Astin Fitria, Niko Prasetyo, Karna Wijaya,

Catalytic Processes in Materials Science

The synthesis, characterization, and application of a NiO-PO 4 /SiO 2 catalyst for ethanol dehydration to diethyl ether were successfully conducted. The sol-gel method utilized TEOS as the silica source, NaHCO 3 as a template, and different phosphoric acid concentrations (1, 2, and 3 M). Calcination occurred at temperatures of 400, 500, and 600 °C. The catalyst with the highest acidity underwent impregnation with 1, 2, and 3% (w/w) nickel precursor proceeded by calcination with N 2 gas. Characterization techniques included FTIR, XRD, SEM-EDX, and AAS. The application of SP 2-NiO 3% catalyst as the catalyst with the highest acidity demonstrated significant activity and selectivity in diethyl ether production at 175, 200, and 225 °C temperatures, yielding 88% conversion and 5.07% diethyl ether selectivity at its optimum temperature of 225 °C.