Pomegranate-like Core–Shell Ni-NSs@MSNSs as a High Activity, Good Stability, Rapid Magnetic Separation, and Multiple Recyclability Nanocatalyst for DCPD Hydrogenation

High Resolution Image Download MS PowerPoint Slide A novel pomegranate-like [email protected] nanocatalyst was successfully synthesized via a modified Stöber method, and its application in the hydrogenation of dicyclopentadiene (DCPD) was firstly reported. The [email protected] possessed a high specific area (658 m 2 /g) and mesoporous structure (1.7–3.3 nm). The reaction of hydrogenation of DCPD to endo -tetrahydrodicyclopentadiene ( endo -THDCPD) was used to evaluate the catalytic performance of the prepared materials. The distinctive pomegranate-like [email protected] core–shell nanocomposite exhibited superior catalytic activity (TOF = 106.0 h –1 and STY = 112.7 g·L –1 ·h –1 ) and selectivity (98.9%) than conventional Ni-based catalysts (experimental conditions: Ni/DCPD/cyclohexane = 1/100/1000 (w/w), 150 °C, and 2.5 MPa). Moreover, the [email protected] nanocatalyst could be rapidly and conveniently recycled by magnetic separation without appreciable loss. The [email protected] also exhibited excellent thermal stability (≥750 °C) and good recycling performance (without an activity and selectivity decrease in four runs). The superior application performance of the [email protected] nanocatalyst was mainly owing to its unique pomegranate-like structure and core–shell synergistic confinement effect.

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