Adsorption of glycine on the acid site of H-ZSM-5 has been studied at an embedded ONIOM (MP2/6-31G(d,p): UFF) level of theory. Four possible modes of adsorptions are considered. The zwitterionic adsorption is the most stable conformation with the highest adsorption energy of 47.22 kcal/mol. The glycine zwitterion is protonated and stabilized by the anionic zeolite framework. The second most sta...

in the present work, b-zsm-5 zeolite membranes were synthesized on porous tubular α-alumina supports by several subsequence in situ crystallization hydrothermal treatments. the tio2- bohmite and ɣ- alumina intermediate layers were applied to improve the lattice matching between zeolite layer and the support. the uniform membrane intermediate layers with low permeation resistance were prepared o...

Abstract This study investigates the production of diesel fuels by integrated Fischer–Tropsch synthesis over a bifunctional cobalt catalyst consisting component (Co–Al 2 O 3 /SiO ) and zeolite-containing (ZSM-5). The catalytic properties were tested in continuous-flow reactor with stationary bed at 240–250°C, MPa, gas WHSV 1000 h –1 . effects SiO /Al ratio HZSM-5 zeolite on performance, deactiv...

In the present work, B-ZSM-5 zeolite membranes were synthesized on porous tubular α-alumina supports by several subsequence in situ crystallization hydrothermal treatments. The TiO2- Bohmite and ɣ- alumina intermediate layers were applied to improve the lattice matching between zeolite layer and the support. The uniform membrane intermediate layers with low permeation resistance were...