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A comparative study of solvothermal and sol-gel-derived nanocrystalline alumina catalysts for ethanol dehydration

Authors:

Mingkwan Wannaborworn,

Piyasan Praserthdam,

Bunjerd JongsomjitAuthors Info & Claims

Journal of Nanomaterials, Volume 16, Issue 1

Article No.: 429, Page 429

https://doi.org/10.1155/2015/519425

Published: 01 January 2015 Publication History

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Abstract

The ethanol dehydration to ethylene over alumina catalysts prepared by solvothermal and sol-gel methods was investigated. Also, a commercial alumina was used for comparison purposes. The results showed that the catalytic activity depends on the properties of catalyst derived from different preparation methods and reaction temperature. The alumina synthesized by solvothermal method exhibited the highest activity. This can be attributed to the higher surface area and larger amount of acid site, especially the ratio of weak/strong acid strength as determined by N₂ physisorption and NH₃-TPD studies. The solvothermal-derived catalyst exhibited an excellent performance with complete ethanol conversion and 100% selectivity to ethylene at 350°C in comparison with other ones. In addition, we further studied the catalytic dehydration of alumina catalyst modified with Fe. The presence of 10 wt.% Fe decreased both conversion and ethylene selectivity. However, the acetaldehyde selectivity apparently increased. It was related to the dehydrogenation pathway that takes place on Fe species.

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Cited By

Inmanee TPinthong PJongsomjit B(2017)Effect of Calcination Temperatures and Mo Modification on Nanocrystalline (ź-ź)-Al2O3 Catalysts for Catalytic Ethanol DehydrationJournal of Nanomaterials10.1155/2017/50183842017(10)Online publication date: 1-Jan-2017
https://dl.acm.org/doi/10.1155/2017/5018384
de Oliveira APaulista AAlencar ABraga T(2017)Gelatin Template Synthesis of Aluminum Oxide and/or Silicon Oxide Containing Micro/Mesopores Using the Proteic Sol-Gel MethodJournal of Nanomaterials10.1155/2017/25047962017Online publication date: 1-Jan-2017
https://dl.acm.org/doi/10.1155/2017/2504796

A comparative study of solvothermal and sol-gel-derived nanocrystalline alumina catalysts for ethanol dehydration
1. Hardware
  1. Electronic design automation
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  1. Network types
    1. Ad hoc networks

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Published In

cover image Journal of Nanomaterials

Journal of Nanomaterials Volume 16, Issue 1

January 2015

3900 pages

ISSN:1687-4110

EISSN:1687-4129

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Hindawi Limited

London, United Kingdom

Publication History

Accepted: 12 November 2015

Revised: 02 November 2015

Received: 06 August 2015

Published: 01 January 2015

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Cited By

Inmanee TPinthong PJongsomjit B(2017)Effect of Calcination Temperatures and Mo Modification on Nanocrystalline (ź-ź)-Al2O3 Catalysts for Catalytic Ethanol DehydrationJournal of Nanomaterials10.1155/2017/50183842017(10)Online publication date: 1-Jan-2017
https://dl.acm.org/doi/10.1155/2017/5018384
de Oliveira APaulista AAlencar ABraga T(2017)Gelatin Template Synthesis of Aluminum Oxide and/or Silicon Oxide Containing Micro/Mesopores Using the Proteic Sol-Gel MethodJournal of Nanomaterials10.1155/2017/25047962017Online publication date: 1-Jan-2017
https://dl.acm.org/doi/10.1155/2017/2504796

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