Full N,N-Methylation of 4,4′-Methylenedianiline with Dimethyl Carbonate: A Feasible Access to 4,4′-Methylene bis(N,N-Dimethylaniline)

Table 5

Elemental analysis and N₂ adsorption of fresh and reused NaY catalysts.

Run	C/wt%	N/wt%	Surface area; /m^2/g	Pore volume; /cm^3/g
1	0.1	—	408.2	0.37
2	10.0	1.2	87.9	0.16
3	10.3	1.3	54.0	0.15