Cu layered double hydroxides as catalysts for N-methylation of p-anisidine: Influence of synthesis conditions

• Published in: Catalysis communications 2019-07, Vol.127, p.39-44
• Main Authors: Bukhtiyarova, M.V., Nuzhdin, A.L., Bukhtiyarov, A.V., Kardash, T.Y., Romanenko, A.V.
• Format: Article
• Language: English
• Subjects: Base solution; Layered double hydroxides; N-Methylation; p-Anisidine conversion
• ISSN: 1566-7367; 1873-3905
• DOI: 10.1016/j.catcom.2019.05.004

Cu-containing layered double hydroxides were synthesized by co-precipitation method using base solution (NaOH and Na2CO3) with different concentration of carbonate ions. The influence of the precipitating agent concentration on formation of hydrotalcite phase was investigated. Characterization of the surface of the obtained samples calcined at 450 °C and 650 °C was performed by x-ray photoelectron spectroscopy. Catalysts based on Cu-layered double hydroxides were investigated in N-methylation of p-anisidine by methanol obtaining N-methyl-p-anisidine using autoclave reactor. Effect of precipitating agent concentration during synthesis of the Cu-layered double hydroxide on the catalyst performance was studied. [Display omitted] •Cu-layered double hydroxides are prepared by co-precipitation method.•The concentration of sodium carbonate in the base solution is varied during synthesis.•Cu catalysts on the base of LDHs are active in N-methylation of p-anisdine.•p-Anisidine conversion increases with decrease of carbonate concentration.