NDLI: Bidimensional ZSM-5 zeolites probed as catalysts for polyethylene cracking

Please wait, while we are loading the content...

Immobilized Grubbs catalysts on mesoporous silica materials: insight into support characteristics and their impact on catalytic activity and product selectivity

Improvement in the catalytic properties of ZSM-5 zeolite nanoparticles via mechanochemical and chemical modifications

Studies on the epoxidation of methallyl chloride over TS-1 microsphere catalysts in a continuous slurry reactor

The curious effects of integrating bimetallic active centres within nanoporous architectures for acid-catalysed transformations

Pd/zeolite-based catalysts for the preferential CO oxidation reaction: ion-exchange, Si/Al and structure effect

Carbon/H-ZSM-5 composites as supports for bi-functional Fischer–Tropsch synthesis catalysts

The effect of Si/Al ratio on the catalytic performance of hierarchical porous ZSM-5 for catalyzing benzene alkylation with methanol

Impact of pore topology and crystal thickness of nanosponge zeolites on the hydroconversion of ethylbenzene

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

Effect of SO₂ on NH₃ oxidation over a Cu-SAPO-34 SCR catalyst

Towards molecular control of elementary reactions in zeolite catalysis by advanced molecular simulations mimicking operating conditions

Selective dehydrogenation of bioethanol to acetaldehyde over basic USY zeolites

Design of an MWW zeolite catalyst for linear alkylbenzene synthesis with improved catalytic stability

Small-pore molecular sieves SAPO-57 and SAPO-59: synthesis, characterization, and catalytic properties in methanol-to-olefins conversion

Mesoporous EU-1 zeolite as a highly active catalyst for ethylbenzene hydroisomerization

Framework-substituted cerium MCM-22 zeolite and its interlayer expanded derivative MWW-IEZ

Bidimensional ZSM-5 zeolites probed as catalysts for polyethylene cracking

Comparison of glucose conversion to 5-HMF using different modified mordenites in ionic liquid and biphasic media

Selective oxidation of bulky organic sulphides over layered titanosilicate catalysts

Modification of Sn-Beta zeolite: characterization of acidic/basic properties and catalytic performance in Baeyer–Villiger oxidation

Improving the catalytic performance of SAPO-18 for the methanol-to-olefins (MTO) reaction by controlling the Si distribution and crystal size

Catalyst hydrothermal deactivation and metal contamination during the in situ catalytic pyrolysis of biomass

Towards biolubricant compatible vegetable oils by pore mouth hydrogenation with shape-selective Pt/ZSM-5 catalysts

Assessing biomass catalytic pyrolysis in terms of deoxygenation pathways and energy yields for the efficient production of advanced biofuels

Inside back cover

Back cover

Catalysis Science & Technology Vol - 6 Issue - 7

Catalysis Science & Technology Vol - 6 Issue - 6

Catalysis Science & Technology Vol - 6 Issue - 5

Catalysis Science & Technology Vol - 6 Issue - 4

Catalysis Science & Technology Vol - 6 Issue - 3

Catalysis Science & Technology Vol -5

Catalysis Science & Technology Vol -4

Catalysis Science & Technology Vol -3

Catalysis Science & Technology Vol -2

Catalysis Science & Technology Vol -1

Bidimensional ZSM-5 zeolites probed as catalysts for polyethylene cracking

Content Provider	Royal Society of Chemistry (RSC)
Author	Přech, J. Peral, A. Escola, J. M. Ochoa-Hernández, C. Serrano, D. P. Čejka, J.
Copyright Year	2016
Abstract	Lamellar and pillared ZSM-5 zeolites (L-ZSM-5 and PI-ZSM-5, respectively) were synthesized and tested in the catalytic cracking of low-density polyethylene (LDPE). The introduction of silica pillars into lamellar ZSM-5 caused a high increase in the Si/Al ratio (from 33 up to 64) and the generation of uniform mesopores with a size of about 3.5 nm. Both samples provided quite similar LDPE conversions at the three reaction temperatures investigated (340, 360 and 380 °C) despite the lower concentration of acid sites in PI-ZSM-5, which is assigned to the improved active centre accessibility due to the pillaring treatment. Significant activity was observed even at the lowest temperature, with LDPE conversions in the range 27–36%, which indicates that 2D ZSM-5 zeolites are convenient catalysts for polyethylene cracking. The main products of LDPE catalytic cracking were C2–C5 olefins with a selectivity of 60–70%, denoting that an end-chain cracking mechanism is predominant. 2D ZSM-5 samples were subsequently compared with nanocrystalline (n-ZSM-5) and hierarchical ZSM-5 (h-ZSM-5) zeolites. Pyridine adsorption followed by FTIR measurements showed significant differences in terms of not only acid site concentration but also the Brønsted/Lewis acid distribution among the samples. When the LDPE cracking conversion was referred to the zeolite mesopore/external surface area, a good correlation was observed with the concentration of Brønsted acid sites but not when considering just the Lewis acid sites. This interesting fact suggests that Brønsted acid sites are mainly the active centers for the cracking of the LDPE chains, concluding that in addition to the accessibility, the nature of the acid sites plays a major role in this type of reaction.
Starting Page	2754
Ending Page	2765
Page Count	12
File Format	HTM / HTML PDF
ISSN	20444753
Volume Number	6
Issue Number	8
Journal	Catalysis Science & Technology
DOI	10.1039/c5cy02075a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Acid Polyethylene ZSM-5 Fluid catalytic cracking Zeolite LDPE Silicon dioxide Nsted Mesoporous material Pyridine Adsorption Lewis Low-density polyethylene
Content Type	Text
Resource Type	Article
Subject	Catalysis

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Acidity and accessibility studies of desilicated ZSM-5 zeolites in terms of their effectiveness as catalysts in acid-catalyzed cracking processes

Cubic Pm3n mesoporous aluminosilicates assembled from zeolite seeds as strong acidic catalysts

Thermally stable phosphorus and nickel modified ZSM-5 zeolites for catalytic co-pyrolysis of biomass and plastics

Synthesis of ZSM-5 zeolite from diatomite for fluid catalytic cracking (FCC) application

Synthesis of cocrystallized USY/ZSM-5 zeolites from kaolin and its use as fluid catalytic cracking catalysts

Mesoporous ZSM-5 Zeolites in Acid Catalysis: Top-Down vs. Bottom-Up Approach

Hierarchical ZSM-11 zeolite prepared by alkaline treatment with mixed solution of NaOH and CTAB: characterization and application for alkylation of benzene with dimethyl ether

Influences of Mesoporosity Generation in ZSM-5 and Zeolite Beta on Catalytic Performance During n-Hexane Isomerization

Understanding the Catalytic Activity of Microporous and Mesoporous Zeolites in Cracking by Experiments and Simulations

Bidimensional ZSM-5 zeolites probed as catalysts for polyethylene cracking

Similar Documents

Acidity and accessibility studies of desilicated ZSM-5 zeolites in terms of their effectiveness as catalysts in acid-catalyzed cracking processes

Cubic Pm3n mesoporous aluminosilicates assembled from zeolite seeds as strong acidic catalysts

Thermally stable phosphorus and nickel modified ZSM-5 zeolites for catalytic co-pyrolysis of biomass and plastics

Synthesis of ZSM-5 zeolite from diatomite for fluid catalytic cracking (FCC) application

Synthesis of cocrystallized USY/ZSM-5 zeolites from kaolin and its use as fluid catalytic cracking catalysts

Mesoporous ZSM-5 Zeolites in Acid Catalysis: Top-Down vs. Bottom-Up Approach

Hierarchical ZSM-11 zeolite prepared by alkaline treatment with mixed solution of NaOH and CTAB: characterization and application for alkylation of benzene with dimethyl ether

Influences of Mesoporosity Generation in ZSM-5 and Zeolite Beta on Catalytic Performance During n-Hexane Isomerization

Understanding the Catalytic Activity of Microporous and Mesoporous Zeolites in Cracking by Experiments and Simulations

Bidimensional ZSM-5 zeolites probed as catalysts for polyethylene cracking