Abstract The thermal effect of microwave heating was investigated in a NaY aged precursor gel with high dissipation factor. influence power, position, and geometry the cylindrical vessel evaluated on hot spots zeolite formation oven. Higher powers at higher temperatures led to more heterogeneity faster near wall. highest temperature gradient achieved which placed off‐center turntable farthest d...

In this study, Fe loaded zeolite NaY with varying iron contents was prepared and used as glyphosate adsorbents. A hydrothermal method to synthesize the from bagasse ash derived silica (Si-BA). Various (1.75 - 7.66 %w/w) were impregnated onto zeolite. Several techniques examine physicochemical properties of adsorbents, including X-ray diffraction (XRD), energy dispersive fluorescence (ED-XRF), N...

We calculated transition state theory and exact rate coefficients for benzene jumps in Na-Y zeolite between 150 and 500 K. This is the first exact flux correlation function rate calculation for a non-spherical molecule inside a zeolite. We calculated rates for jumps between SII and W sites, located near Na ions in 6-rings and in 12-rings windows, respectively. Partition function ratios were cal...

A well-defined cluster containing 12 equivalent platinum atoms was prepared by ion exchange of an NaY zeolite, followed by hydrogen reduction. It was characterized by electron paramagnetic resonance (EPR) spectroscopy, hyperfine sublevel correlation (HYSCORE), and theoretical calculations. Combing the results of the experiments with density functional calculations, the likely structure of this ...

Hydrogen production from biomass has been paid more attention for years. Processes suggested for production of hydrogen from biomass are often involved in high-temperature pyrolysis, catalytic steam reforming or enzymatic biosynthesis. These strategies, however, encounter problems of high consumption of energy, low catalyst efficiency and very limited productivity. Group VIII metals such as Pt,...

In addition to the adsorption mechanism, heat released during exothermic influences chemical reactions that follow heterogeneous catalysis. Both steps depend on structure and surface chemistry of catalyst. An example a typical catalyst is faujasite zeolite. For zeolites, influence Si/Al ratio number Na+ Ca2+ cations was therefore investigated in systematic study. A comparison between NaX (Sodiu...

CO2 capture on solid materials possesses significant advantages on the operation cost, process for large-scale CO2 capture and storage (CCS) that stimulates great interest in exploring high-performance solid CO2 adsorbents. A ship-in-a-bottle strategy was successfully developed to prepare the [APMIM]Br@NaY host-guest system in which an amine-functionalized ionic liquid (IL), 1-aminopropyl-3-met...