NDLI: Engineering of ZSM-5 zeolite crystals for enhanced lifetime in the production of light olefins <i>via</i> 2-methyl-2-butene cracking

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Contents list

Crude oil to chemicals: light olefins from crude oil

Kinetic evidence: the rate-determining step for ammonia synthesis over electride-supported Ru catalysts is no longer the nitrogen dissociation step

Is iron nitride or carbide highly active for oxygen reduction reaction in acidic medium?

Kinetics study of the Ru/C-catalysed hydrogenolysis of polyols – insight into the interactions with the metal surface

Engineering of ZSM-5 zeolite crystals for enhanced lifetime in the production of light olefins via 2-methyl-2-butene cracking

CO oxidation on Rh-doped hexadecagold clusters

Synthesis of cyclic organic carbonates via catalytic oxidative carboxylation of olefins in flow reactors

A mechanistic study of the Lewis acid–Brønsted base–Brønsted acid catalysed asymmetric Michael addition of diethyl malonate to cyclohexenone

Ethene hydrogenation vs. dimerization over a faujasite-supported [Rh(C₂H₄)₂] complex. A computational study of mechanism

Tetronics/cyclodextrin-based hydrogels as catalyst-containing media for the hydroformylation of higher olefins

Z-scheme CdS–Au–BiVO₄ with enhanced photocatalytic activity for organic contaminant decomposition

Sulfur-tolerant BaO/ZrO₂/TiO₂/Al₂O₃ quaternary mixed oxides for deNO_X catalysis

Low-temperature H₂-plasma-assisted NO_x storage and reduction over a combined Pt/Ba/Al and LaMnFe catalyst

Role of lanthanum species in improving the photocatalytic activity of titanium dioxide

Highly active and selective binary MgO–SiO₂ catalysts for the production of 1,3-butadiene from ethanol

Effect of hierarchical porosity in Beta zeolites on the Beckmann rearrangement of oximes

New insights into the support morphology-dependent ammonia synthesis activity of Ru/CeO₂ catalysts

Ethanol gas-phase ammoxidation to acetonitrile: the reactivity of supported vanadium oxide catalysts

Catalytic oxidation of benzene over ruthenium–cobalt bimetallic catalysts and study of its mechanism

Highly selective oxidation of cyclohexene to 2-cyclohexene-1-one over polyoxometalate/metal–organic framework hybrids with greatly improved performances

Influence of the lanthanide(iii) ion in {[Cu₃Ln₂(oda)₆(H₂O)₆]·nH₂O}_n (Ln^III: La, Gd, Yb) catalysts on the heterogeneous oxidation of olefins

Hydrothermal synthesis of a layered-type W–Ti–O mixed metal oxide and its solid acid activity

The mechanism of H₂ and H₂O desorption from bridging hydroxyls of a TiO₂(110) surface

Organic-free synthesis of {001} facet dominated BiOBr nanosheets for selective photoreduction of CO₂ to CO

Synthesis of sinter-resistant Au@silica catalysts derived from Au₂₅ clusters

Hydrodeoxygenation of gamma-valerolactone on transition metal phosphide catalysts

Water oxidation mediated by ruthenium oxide nanoparticles supported on siliceous mesocellular foam

Consequences of secondary zeolite growth on catalytic performance in DMTO studied over DDR and CHA

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Engineering of ZSM-5 zeolite crystals for enhanced lifetime in the production of light olefins via 2-methyl-2-butene cracking

Content Provider	Royal Society of Chemistry (RSC)
Author	Pérez-Ramírez, Javier Liu, Jiaxu Boltz, Marilyne Mitchell, Sharon
Copyright Year	2017
Abstract	The selective cracking of low-value C5 olefins such as 2-methyl-2-butene (2M2B), a growing by-product of deep catalytic cracking, over ZSM-5 zeolites is an attractive route for the on-purpose production of ethylene and propylene. Yet, several aspects, including the deactivation behaviour and the effect of the crystal properties (i.e., the size, morphology, amount of defects, and mesoporosity) on the performance, still lack understanding. Here, the relative impact of these key crystal variables on the catalyst stability and selectivity is examined by preparing a series of tailored materials with equivalent acidic properties within the optimal range for this process. Specifically, zeolites with micron- and nanosized crystals of rounded-boat and coffin-shaped morphology and different defect concentrations are synthesised in hydroxide and fluoride media, whereas intracrystalline mesopores are subsequently introduced by their controlled desilication. In agreement with the comparable active site distributions, evaluation in 2M2B cracking evidences similar initial conversion and product distributions over all catalysts, with high propylene : ethylene ratios and high butylene yields compatible with a dimerisation–cracking mechanism. In contrast, major differences in the deactivation behaviour are demonstrated, clearly illustrating the dominant impact of the mesopore (external) surface area compared to the defect concentration or crystal morphology. Comparative evaluation in the widely studied conversion of methanol to olefins (MTO) reveals qualitatively similar trends. Quantitatively, however, a striking six-fold extension of the lifetime (347 versus 54 h) and a 3-fold higher light olefin space-time yield (6.67 versus 2.25 gC2–4= gzeolite−1 h−1) are observed over the best catalyst in 2M2B cracking with respect to MTO.
Starting Page	64
Ending Page	74
Page Count	11
File Format	HTM / HTML PDF
ISSN	20444753
Volume Number	7
Issue Number	1
Journal	Catalysis Science & Technology
DOI	10.1039/c6cy01009a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	2-Methyl-2-butene Active site ZSM-5 Ethylene Alcohol Fluid catalytic cracking Tert-Amyl alcohol Mesoporous material Propene Fluoride Alkene Butene Methanol
Content Type	Text
Resource Type	Article
Subject	Catalysis

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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Butene Catalytic Cracking to Propene and Ethene over Potassium Modified ZSM-5 Catalysts

Butene catalytic cracking to ethylene and propylene on fluorinated ZSM-5-based catalyst

Slight channel difference influences the reaction pathway of methanol-to-olefins conversion over acidic H-ZSM-22 and H-ZSM-12 zeolites

Enhancing the Production of Light Olefins by Catalytic Cracking of FCC Naphtha over Mesoporous ZSM-5 Catalyst

Catalytic pyrolysis of microalga Chlorella pyrenoidosa for production of ethylene, propylene and butene

Methanol-to-olefins process over zeolite catalysts with DDR topology: effect of composition and structural defects on catalytic performance

High performance phosphorus-modified ZSM-5 zeolite for butene catalytic cracking

Bidimensional ZSM-5 zeolites probed as catalysts for polyethylene cracking

High performance phosphorus-modified ZSM-5 zeolite for butene catalytic cracking

Engineering of ZSM-5 zeolite crystals for enhanced lifetime in the production of light olefins via 2-methyl-2-butene cracking

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Butene Catalytic Cracking to Propene and Ethene over Potassium Modified ZSM-5 Catalysts

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Slight channel difference influences the reaction pathway of methanol-to-olefins conversion over acidic H-ZSM-22 and H-ZSM-12 zeolites

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Engineering of ZSM-5 zeolite crystals for enhanced lifetime in the production of light olefins via 2-methyl-2-butene cracking