Exclusive SAPO-seeded synthesis of ZK-5 zeolite for selective synthesis of methylamines

Abstract

The selectivity for monomethylamine plus dimethylamine is urged to be improved in selective synthesis of methylamines due to their high value as the chemical intermediates. ZK-5, a small-pore zeolite, shows...

Insights on the seed selection criteria of SAPO-34 synthesis: structural units and their chemical microenvironment

“…39,40 However, there have only been a few studies involving heteronuclear seeds due to insufficient recognition of the related principle. 17,[41][42][43] A recent result of the seed-assisted synthesis of zeolite Y revealed that only partial dissolution with solid residue is crucial for a qualified seed, where hydrogel microparticles migrate and attach, inducing fast nucleation and crystal growth. 44 But the working mechanism of a seed in a SAPO system has been rarely investigated.…”

Electrosynthesis ofN,N-dimethylformamide from market-surplus trimethylamine coupled with hydrogen production

“…9,10 Consequently, the large TMA distribution in the products greatly limits the overall efficiency for DMA production. Although advanced silica-alumina catalysts were reported to suppress TMA formation via methanol animation to some extent, [11][12][13] the development of a cost-effective and less energyintensive method to directly channel TMA into DMF production is desirable to enhance the synthetic efficiency of DMA.…”