PDF Publication Title:
Text from PDF Page: 085
X-ray diffraction data (XRD) in the two-theta range 5 – 35o were recorded with a Siemens D 5000 powder diffractometer equipped with a Cu-target and running in Bragg- Brentano geometry. Nitrogen sorption at liquid N2 temperature was measured for all samples with a Micromeritrics ASAP 2010 instrument after outgassing for 12 hours at 300o C. The BET equation was used to calculate the zeolite loading (gzeolite/gsample) of the samples from N2 adsorption data. It was assumed that the surface area of the zeolite in the film was 721 m2/g in accordance with the measured surface area for the reference material, sample DC. The pore size distribution was determined by the Barrett-Joyner-Halenda (BJH) method applied to the desorption branch. Mercury Intrusion Porosimetry (MIP) was performed using a Micromeritics Autopore 9220 V1.04 mercury porosimeter, operated between 0.1 and 3500 bar. 2.3 Breakthrough experiments The films were also characterized by measuring the CO2 breakthrough profile with step change experiments. The experimental set-up consisted of a gas feed section, an adsorption column and a gas analysis section. Three identical coated monolith samples, each 10 cm long and 2 cm in diameter were used in the step change experiment. The samples where placed in series in the adsorption column (30 cm long and 2 cm diameter). The adsorbents were activated under a nitrogen flow of 0.2 l/min. at 300o C for 3 hours with a heating and cooling rate of 2o C/min. The samples were thereafter cooled to room temperature (26o C and 101 kPa, respectively). At time zero, the feed was switched from N2 (99.995%, Linde Gas) to a 0.2, 0.5 or 1 l/min flow of 10% CO2 in N2 (9.99% CO2 in N2, Linde Gas) using a pneumatic switching valve (switching time of less than 0.1 s). The concentration of CO2 in the gas exiting the column was measured as a function of time using 69PDF Image | Structured Zeolite Adsorbents for PSA Applications
PDF Search Title:
Structured Zeolite Adsorbents for PSA ApplicationsOriginal File Name Searched:
structured-zeolites.pdfDIY PDF Search: Google It | Yahoo | Bing
CO2 Organic Rankine Cycle Experimenter Platform The supercritical CO2 phase change system is both a heat pump and organic rankine cycle which can be used for those purposes and as a supercritical extractor for advanced subcritical and supercritical extraction technology. Uses include producing nanoparticles, precious metal CO2 extraction, lithium battery recycling, and other applications... More Info
Heat Pumps CO2 ORC Heat Pump System Platform More Info
CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com (Standard Web Page)