TEMPERATURE DEPENDENCE OF THE Pt L3-EDGE EXAFS OF PLATINUM CLUSTERS SUPPORTED ON NaY-ZEOLITE

Maximum hydrogen chemisorption on KL zeolite supported Pt clusters.

Platinum clusters supported on KL zeolites were characterized by EPR, HRTEM, and EXAFS. Two kinds of hydrogen chemisorption experiments both result in a saturation value of 2.9 hydrogen atoms per platinum atom, significantly more than that reported so far. A hydrogen coverage-dependent cluster restructuring is suggested.

Exafs Spectroscopy of Supported Osmium Clusters

Investigation on the Platinum-Loaded NaY Zeolite Catalysts for Liquid Phase Reforming of Carbohydrates to Hydrogen

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,...

the effect of taftan pozzolan on the compressive strength of concrete in the environmental conditions of oman sea (chabahar port)

cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...

the effect of explicit teaching of metacognitive vocabulary learning strategies on recall and retention of idioms

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