Enhancing propylene production from catalytic cracking of Arabian Light VGO over novel zeolites as FCC catalyst additives

Siddiqui, M. Abdul Bari; Aitani, Abdullah M.; Saeed, M.R.; Al-Yassir, N.

doi:10.1016/j.fuel.2010.09.041

Cited by 73 publications

(40 citation statements)

References 29 publications

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“…This means that the addition of magnesium is also leading to the formation of by-products. If one considers that fructose is forced to remain longer inside the zeolite structure because of partial blockage of the pores caused by the magnesium (Table 1), it will certainly undergo secondary transformations [52][53][54].…”

Section: Activity and Selectivity Of Magnesium-impregnated Zeolitesmentioning

confidence: 99%

Glucose isomerisation into fructose over magnesium-impregnated NaY zeolite catalysts

Graça

Iruretagoyena

Chadwick

2017

Applied Catalysis B: Environmental

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Section: Activity and Selectivity Of Magnesium-impregnated Zeolitesmentioning

confidence: 99%

Glucose isomerisation into fructose over magnesium-impregnated NaY zeolite catalysts

Graça

Iruretagoyena

Chadwick

2017

Applied Catalysis B: Environmental

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“…A high C/O ratio will operate to maximize conversion, which tends to favor light olefin production [71,80,94].…”

Section: Effect Of C/o Ratiomentioning

confidence: 99%

Maximizing propylene production via FCC technology

2015

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This review looks at the main processes available for the production of light olefins with a focus on maximizing the production of propylene. Maximization of propylene production has become the focus of most refineries because it is in high demand and there is a supply shortage from modern steam crackers, which now produce relatively less propylene. The flexibility of the fluid catalytic cracking (FCC) to various reaction conditions makes it possible as one of the means to close the gap between supply and demand. The appropriate modification of the FCC process is accomplished by the synergistic integration of the catalyst, temperature, reaction-residence time, coke make, and hydrocarbon partial pressure. The main constraints for maximum propylene yield are based on having a suitable catalyst, suitable reactor configuration and reaction conditions.

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“…The utilization of other types of zeolites as FCC additives such as MCM-22 [10], ITQ [11], beta [12,13], mordenite [13], MCM-68 [14] and bi-functional ZSM-5/MgAl 2 O 4 -based additive [15] were discussed in other papers. Our recent investigation [16] has demonstrated the importance of both acidity and mesoporosity on the performance of mesoporous ZSM-5 additive in enhancing FCC propylene. Mesopores ensure an optimal accessibility and transport of VGO feed and products, while the zeolite micropores induce the preferred shapeselective properties [17].…”

Section: Introductionmentioning

confidence: 98%

Utilization of ZSM-5/MCM-41 composite as FCC catalyst additive for enhancing propylene yield from VGO cracking

et al. 2011

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A micro-mesoporous ZSM-5/MCM-41 composite molecular sieve (ZM13) was synthesized and tested as an FCC catalyst additive to enhance the yield of propylene from catalytic cracking of vacuum gas oil (VGO). The catalytic performance of the additive was assessed using a commercial equilibrium USY FCC catalyst (E-Cat) in a fixed-bed micro-activity test unit (MAT) at 520°C and various catalyst/oil ratios. MCM-41, ZSM-5 and two ZSM-5/MCM-41 composites were systematically characterized by complementary techniques such as XRD, BET, FTIR and SEM. The characterization results showed that the composites contained secondary building unit with different textural properties compared to pure ZSM-5 and MCM-41. MAT results showed that the VGO cracking activity of E-Cat did not decrease by using these additives. The highest propylene yield of 12.2 wt% was achieved over steamed ZSM-5/MCM-41 composite additive (ZM13) compared with 8.6 wt% over conventional ZSM-5 additive at similar gasoline yield penalty. The enhanced production of propylene over composite additive was attributed to its mesopores that suppressed secondary and hydrogen transfer reactions and offered easier transport and accessibility to active sites. Gasoline quality was improved by the use of all additives except MCM-41, as octane rating increased by 6-12 numbers.

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Enhancing propylene production from catalytic cracking of Arabian Light VGO over novel zeolites as FCC catalyst additives

Cited by 73 publications

References 29 publications

Glucose isomerisation into fructose over magnesium-impregnated NaY zeolite catalysts

Glucose isomerisation into fructose over magnesium-impregnated NaY zeolite catalysts

Maximizing propylene production via FCC technology

Utilization of ZSM-5/MCM-41 composite as FCC catalyst additive for enhancing propylene yield from VGO cracking

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