Investigation of NH Desorption Kinetics on the LTA and SOD Zeolite Membranes.

The acidity characteristics of zeolite are highly significant, and understanding the acidic properties is essential for developing new types of zeolite catalysts. Zeolite membranes were synthesized using metakaolin, sodium hydroxide, and alumina with a molar ratio of 6AlSiO:12NaOH:2AlO as the starting ingredients. X-ray diffraction, scanning electron microscopy, and infrared spectroscopy were used for this study.

Synthesis and reactivity of a novel class of long-lived ammonium ylides: derivatives of benzo[b]pyrrolo[2,1-f][1.6]naphthyridine.

Reaction of 10-cyanotetrahydrobenzo[b][1,6]naphthyridines (1-6) with activated alkynes affords stable benzo[b]pyrrolo[2,1-f][1,6]naphthyridine-4-ium ylides (7-14) in moderate yields. A proposed mechanism for their formation consists of a new tandem multistage process.