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Waste tyre valorization by catalytic pyrolysis – A review

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TLDR
In this article, the main advances in waste tyre valorization by catalytic pyrolysis are analyzed, and a wide range of catalysts have been proposed in the literature, with zeolites being the most commonly used.
Abstract
The environmental concern associated with waste tyre disposal and the necessity of sustainable waste management policies has promoted the development of waste tyre valorization processes in the last decades. Within this framework, this review analyzes the main advances in waste tyre valorization by catalytic pyrolysis. Waste tyre pyrolysis allows converting this solid waste into three product fractions of potential interest, as are gases, pyrolysis oil (TPO) and char, with their yield and features being conditioned by pyrolysis conditions. Catalytic pyrolysis is an interesting alternative to improve the quality of the products and the selectivity of the process. A wide range of catalysts have been proposed in the literature for waste tyre valorization, with zeolites being the most commonly used due to their capacity for the production of valuable chemicals, such as BTX and light olefins. This review approaches multidisciplinary aspects for the evaluation of the critical points in this process, such as those related to pyrolysis technologies, reaction mechanisms, catalyst design and products properties.

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Progress in utilisation of waste cooking oil for sustainable biodiesel and biojet fuel production

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Valorization of municipal wastes using co-pyrolysis for green energy production, energy security, and environmental sustainability: A review

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The Use of Heterogeneous Catalysis in the Chemical Valorization of Plastic Waste.

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Waste Refinery: The Valorization of Waste Plastics and End-of-Life Tires in Refinery Units. A Review

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Dynamic pyrolysis behaviors, products, and mechanisms of waste rubber and polyurethane bicycle tires.

TL;DR: The kinetic, thermodynamic, and comprehensive pyrolysis index data verified the easier decomposition of PUT than RT, as well as three consecutive reaction-order models for PUT.
References
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Journal ArticleDOI

Review of fast pyrolysis of biomass and product upgrading

TL;DR: In this paper, an updated review on fast pyrolysis of biomass for production of a liquid usually referred to as bio-oil is provided, including the major reaction systems.
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Lignocellulosic biomass pyrolysis: A review of product properties and effects of pyrolysis parameters

TL;DR: In this paper, a general summary of the properties of pyrolytic products and their analysis methods is given, as well as a review of the parameters that affect the process and a summary of current state of the art.
Journal ArticleDOI

A review on pyrolysis of plastic wastes

TL;DR: In this article, the pyrolysis process for each type of plastics and the main process parameters that influenced the final end product such as oil, gaseous and char were reviewed.
Journal ArticleDOI

Investigation into the shape selectivity of zeolite catalysts for biomass conversion

TL;DR: In this paper, the influence of zeolite pore size and shape selectivity on the conversion of glucose to aromatics was investigated, and it was shown that large pore spaces and steric hindrance play a major role for aromatic production.
Journal ArticleDOI

Zeolites and catalysis

TL;DR: In this article, a review of the fundamentals of zeolite materials science and their application as catalysts is presented, and the most important parameters which allow the preparation of an almost infinite variety of zeolitic materials tailored for a given catalytic application.
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What methods are used to convert waste car tyres into value added products?

Waste car tyres can be converted into value-added products through catalytic pyrolysis, which involves the use of catalysts to improve the quality and selectivity of the process.