fig2

Figure 2. (A) Correlation of the selectivity to dual-cross-condensation with L acidic sites in reaction of 2-aminobenzaldehyde and acetaldehyde; (B) Time course in the reaction between 2-aminoethanol with acetaldehyde on Ni-NiAlZr-LDO at 120 °C under ambient atmosphere; (C) In-situ FT-IR of piperidine adsorption on Ni-NiAlZr-LDO at 50 °C; (D) Time course based on piperidine conversion in the reaction between piperidine with ethanol on Ni-NiAlZr-LDO at 120 °C under ambient atmosphere. LDO: Layered double oxides; FT-IR: Fourier transform infrared.