Rare Earth Elements In Zeolites And Cracking Catalysts

Rare Earth Elements In Zeolites And Cracking Catalysts. Alexis shackleford, thomas masak, qi fu, gary m smith and bilge yilmaz, basf corporation. What are the precursors for rare earth elements?

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See full list on sciencedirect.com Under harsh cracking reaction conditions and in the presence of generated steam, al may be extracted from the zeolite, leading to loss of acidity and ultimately zeolite collapse lanthanum or rare earth mixtures (rich in la, ce) are incorporated into the zeolite structure by ion exchange techniques they provide stability against loss of al (i.e., How are rare earth elements used in zeolites?

Rehy and renay zeolites, two of the most important components of fcc catalysts, were extensively studied in the past years.

What is the role of rare earth elements in fcc catalysts? Jun 25, 2004 · the role of rare earth cations, therefore, is to ensure the retention of high brønsted acid site density under hydrothermal conditions, such as in fluid catalytic cracking (fcc) regenerators, where steam would dealuminate the y zeolite framework and reduce this site density. Which is more stable, rey or rehy zeolite? Dec 01, 2013 · in the following sections, the main aspects involved in zeolites containing rare earth and its.

Which is more stable, rey or rehy zeolite?

Of the re elements, lanthanum is by far the most commonly used in re containing.

Dec 01, 2013 · in the following sections, the main aspects involved in zeolites containing rare earth and its.

Jun 25, 2004 · the role of rare earth cations, therefore, is to ensure the retention of high brønsted acid site density under hydrothermal conditions, such as in fluid catalytic cracking (fcc) regenerators, where steam would dealuminate the y zeolite framework and reduce this site density.

What are the precursors for rare earth elements?

Jun 25, 2004 · the role of rare earth cations, therefore, is to ensure the retention of high brønsted acid site density under hydrothermal conditions, such as in fluid catalytic cracking (fcc) regenerators, where steam would dealuminate the y zeolite framework and reduce this site density.

Dec 01, 2013 · in the following sections, the main aspects involved in zeolites containing rare earth and its.

Alexis shackleford, thomas masak, qi fu, gary m smith and bilge yilmaz, basf corporation.

Under harsh cracking reaction conditions and in the presence of generated steam, al may be extracted from the zeolite, leading to loss of acidity and ultimately zeolite collapse lanthanum or rare earth mixtures (rich in la, ce) are incorporated into the zeolite structure by ion exchange techniques they provide stability against loss of al (i.e.,

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