Functional layered double hydroxides and their catalytic activity for 1,4-addition of n-octanol to 2-propenonitrile

Functional layered double hydroxides and their catalytic activity for 1,4-addition of n-octanol to 2-propenonitrile

Publication Type:

Journal Article

Source:

Applied Clay Science, Volume 146, p.411-422 (2017)

ISBN:

0169-1317

Abstract:

<p>This contribution concerns the catalytic activity of functional layered double hydroxides (LDHs) for 1,4-addition of n-octanol to 2-propenonitrile aiming to investigate the influence of the organic interlayer anion nature on their physico-chemical and catalytic performances. Two series of functional LDHs, e.g. Mg2.5Al, and Zn2.5Al respectively, were synthesized by co-precipitation at pH 9.5 using a metal nitrates M2+ (NO3)(2)center dot 6H(2)O (M2+ = Mg, Zn), Al(NO3)(3)center dot 9H(2)O solution, an organic acid sodium salt (e.g. sodium dodecyl sulfate (NaDS), sodium laurate (NaL), or sodium stearate (NaS)) and NaOH solution for pH adjustment. XRD, DRIFTS and DR-UV-Vis-NIR characterizations indicated a better intercalation of DS in the interlayer region compared to L or S. The catalytic activity of these solids was related to both their organophilic character and basicity, Mg2.5Al-DS samples, which were more basic, showed a higher activity than Zn2.5Al-DS.</p>