Direct reaction of silicon with ethyl chloride in a fluidized bed reactor

Hamawand, Ihsan and Mohammed, Thamer and Jalhoom, Moayyed G. (2009) Direct reaction of silicon with ethyl chloride in a fluidized bed reactor. International Journal of Chemical Reactor Engineering, 7. A9. ISSN 1542-6580

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Abstract

The aim of this work was to study the production of diethyldichlorosilane [(C2H5)2SiCl2]. The catalytic reaction of silicon (Si) of purity 99.9% with ethylchloride
(C2H5Cl) was investigated in a fluidized bed reactor. Cuprous chloride (CuCl) of purity 99.9% was used as a catalyst of the reaction. Gas chromatography was used on-line for analysis of the reaction products. The experimental work was carried out using a stainless steel column of 5cm internal diameter and 50cm height as the fluidized bed reactor.
The experiments start with different bed temperatures between 200 and 300C to identify the optimum reaction temperature. This temperature was found to be at 250 C, which resulted in the maximum of ethylchloride (EtCl) conversion and diethyldichlorosilane yield. In fifteen runs, the variables considered were sieveanalysis average particle size dp (50,100, and 150 μm), contact mass weight wt (100 – 200 gm) and reacted gas velocity Ug (1.41 – 2.83 cm/s). It was found that the conversion of EtCl increases with decreasing reacted gas velocity, increasing bed contact mass and particle diameter. The yield of Et2SiCl2 was not affected by these variables, but bed temperature was found to have a significant affect.
Two mathematical models, the Orcut model and the continuous CSTR model were used to predict theoretical data for the conversion of EtCl. The comparison between the experimental and the theoretical data showed good agreement with an
absolute error of less than 9%.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: © 2009 The Berkeley Electronic Press. This publication is copyright. It may be reproduced in whole or in part for the purposes of study, research, or review, but is subject to the inclusion of an acknowledgment of the source.
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Agricultural, Civil and Environmental Engineering
Date Deposited: 24 Jul 2014 06:30
Last Modified: 11 Dec 2014 00:10
Uncontrolled Keywords: organohalosilane; direct process; organosilicon; ethylchlorosilane; diethyldichlorosilane
Fields of Research : 02 Physical Sciences > 0203 Classical Physics > 020303 Fluid Physics
09 Engineering > 0915 Interdisciplinary Engineering > 091504 Fluidisation and Fluid Mechanics
09 Engineering > 0904 Chemical Engineering > 090402 Catalytic Process Engineering
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
URI: http://eprints.usq.edu.au/id/eprint/25572

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