y zeolite造句

• Many experiments have been done to understand the properties of Cu-Y zeolites.
• Cu ( I ) Y zeolite catalyst is typically used to reduce the sulfur in both situations.
• Cu-Y zeolites have been shown to catalyze the ethylation of benzene due to their acidic properties.
• However, Cu ( I ) Y zeolite is not the most efficient copper exchanged catalyst used for this purpose.
• It is obtained by dealumination of a low-sodium, ultra-stable Y zeolite with a combined acid and thermal treatment.
• Research shows the Cu-ZSM-5 has higher catalytic activity even though the Y zeolite has a larger pore size and higher copper loading.
• "' Cu-Y zeolites "'are derivatives of the faujasite mineral group which in turn is a member of the zeolite family.
• By using thermal, hydrothermal or chemical methods, some of the alumina can be removed from the Y zeolite framework, resulting in high-silica Y zeolites.
• By using thermal, hydrothermal or chemical methods, some of the alumina can be removed from the Y zeolite framework, resulting in high-silica Y zeolites.
• Cu-Y zeolites are synthesized through aqueous or gaseous ionic exchange unlike the naturally occurring faujasites : faujasite-Ca, faujasite-Mg, and faujasite-Na.
• The exchanged copper atom can vary in oxidation states, but the most studied Cu-Y zeolite variants include Cu ( I ) or Cu ( II ) cations.
• Copper based type Y zeolites were first described as a means of hydrocracking in a patent filed in 1963, and were soon implemented in environmental impact when used as fuel.
• The two most common applications of the Cu ( I ) Y Zeolite are catalytic decomposition of nitrous oxide to nitrogen and oxygen, and desulfurization of fuels used in the hydrocracking process for petroleum production.