A survey of the influence of binders in zeolite catalysis

Hargreaves, J. S. J.; Munnoch, Alexander Leishman

doi:10.1039/c3cy20866d

Cited by 104 publications

(103 citation statements)

References 51 publications

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“…Physical functions include providing particle integrity and attrition resistance, acting as a heat transfer medium, and providing a porous structure to allow diffusion of hydrocarbons into and out of the catalyst microspheres [7,42,47,95,102,104]. The matrix can also affect catalyst selectivity, product quality and resistance to poisons.…”

Section: Catalyst Structurementioning

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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Section: Catalyst Structurementioning

confidence: 99%

Maximizing propylene production via FCC technology

2015

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“…Whilst to date there has only been limited attention to the effect of binders upon zeolite catalysed reactions in the academic literature, there is greater realisation of the often substantial effects that they can have [30][31][32]. Far from being inert, they can have very significant effects upon coking by, for example, trapping coke precursors.…”

Section: The Role Of Binders In Zeolite Catalysed Reactionsmentioning

confidence: 99%

Methane dehydroaromatisation and methanol activation over zeolite catalysts: an overview

Hargreaves

2016

Appl Petrochem Res

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A brief overview of methane dehydroaromatisation over MoO 3 /H-ZSM-5 derived catalysts, the deposition of carbonaceous residues from methanol over H-mordenite and the role of binders in zeolite catalysed reactions is presented. The selective poisoning of methane cracking catalysts is proposed as a potential strategy for the development of methane dehydroaromatisation catalysts. In the case of methanol conversion over H-mordenite, evidence is presented for the formation of larger alkylated aromatics, such as methylnaphthalenes. Binders, ubiquitous components of technical catalysts, have been documented to have a number of important effects often outweighing laboratory based modifications, and therefore, consideration of their effects should be made at an early stage of catalyst development.

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“…The abundant hydroxyl groups on attapulgite's surface makes it a good binder as well [29]. These hydroxyl groups are dehydrated and cross-linked between adjacent binder particles after calcination, thereby increasing mechanical strength of the shaped catalyst [19].…”

Section: Introductionmentioning

confidence: 99%

“…Until recently, the need for a better understanding of shaping process is highlighted in the vibrant area of zeolite catalysis [16][17][18]. The zeolite-binder interactions result in multiple effects on catalyst activity, stability and product selectivity, with the type of binder playing a pivotal role [17,[19][20][21].…”

Section: Introductionmentioning

confidence: 99%

A Facile Strategy to Prepare Shaped ZSM-5 Catalyst with Enhanced para-Xylene Selectivity and Stability for Toluene Methylation

Wang¹,

Chang²,

Liu³

et al. 2017

Preprint

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This work describes the catalytic performances of attapulgite/ZSM-5 extrudate in comparison to conventional alumina-bound ZSM-5 extrudate in toluene methylation. The novel attapulgite/ZSM-5 extrudate is prepared by using natural clay attapulgite as binder which introduces mobile alkaline species and macropores to the extrudate. In contrast to alumina-bound extrudate, this novel extrudate shows significantly higher para-selectivity and stability. By using characterization techniques, including in-situ XRD, SEM, NH3 temperature programmed desorption (TPD), thermogravimetric analysis and n-hexane/cyclohexane physical adsorption, the catalytic performance improvement of attapulgite/ZSM-5 extrudate is correlated with the neutralization of Brønsted acid sites by mobile alkaline species during calcination and reaction process. Moreover, a higher paraselectivity was obtained over attapulgite-bound modified ZSM-5 extrudate. The strategy of extruding ZSM-5 catalysts with attapulgite as binder is facile and universal. Such method paves a new way for preparation of shaped toluene methylation catalyst with enhanced para-selectivity and stability.

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A survey of the influence of binders in zeolite catalysis

Cited by 104 publications

References 51 publications

Maximizing propylene production via FCC technology

Maximizing propylene production via FCC technology

Methane dehydroaromatisation and methanol activation over zeolite catalysts: an overview

A Facile Strategy to Prepare Shaped ZSM-5 Catalyst with Enhanced para-Xylene Selectivity and Stability for Toluene Methylation

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