8Chen D T,Zhang L,Kobe J M, et al. Methylamine synthesis over solid acid catalysts : reaction kinetic measuiements [ J ]. J Moleeular Catal, 1994,93:337 - 355.
9Corbin D R. Process for preparing methylamines using acidic molecular sieve catalysts : US,6166258 [ P ]. 2000 - 12 - 26.
10Corbin D R, Michael K J, Abrams L, et al. Designing zeolitecatalysts for shape-selective reactions:chemical modification of surfaces for improved selectivity to dimethylamine in syn- thesis from methanol and ammonia [ J ]. J Catal, 1990,124 (1) :268 -280.