✦ LIBER ✦

Vanadium passivation of cracking catalysts by imaging secondary ion mass spectrometry

✍ Scribed by Kuei-Jung Chao; Long-Hui Lin; Yong-Chien Ling; Jan-Fu Hwang; Liang-Yuan Hou

Publisher: Elsevier Science
Year: 1995
Tongue: English
Weight: 722 KB
Volume: 121
Category: Article
ISSN: 0926-860X
DOI: 10.1016/0926-860x(94)00217-7

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✦ Synopsis

The vanadium distribution over equilibrium gas oil and resid resistant cracking catalysts and vanadium-loaded cracking catalysts mixed with calcium-exchanged clay has been determined. The results of secondary ion mass spectroscopy imaging are consistent with cracking activity data and show vanadium preferentially accumulated on the calcium-exchanged clay in the presence of fluid catalytic cracking catalyst. This indicates that calcium-exchanged clay should be active for vanadium passivation in catalytic cracking.

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