Effect of iron and calcium over USY coke formation
β Scribed by Alyne S. Escobar; Marcelo M. Pereira; Henrique S. Cerqueira
- Publisher
- Elsevier Science
- Year
- 2008
- Tongue
- English
- Weight
- 420 KB
- Volume
- 339
- Category
- Article
- ISSN
- 0926-860X
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## Abstract The formation of coke and minor products in 2βmethylpentane cracking on USHY has been examined at 673, 723, and 773 K. The results show that the coke precursors are various dehydrogenated carbocations on catalyst surface. Despite the increase of coke yield with reaction time, the select
Coke formation from propene was investigated at 623 K and P propene 100 kPa on a pure 5A zeolite and an industrial adsorbent (5A zeolite 80 wt.%Β±binder 20 wt.%). The composition and location of coke molecules were determined as a function of time on stream. Coking on the pure zeolite was faster than