DOI: https://doi.org/10.9767/bcrec.9.2.5113.87-92

Preparation and Performance of a Fixed Bed Catalyst for the Oxidation of Sodium Mercaptides

State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao, 266580,, China

Received: 20 Jun 2013; Revised: 1 Mar 2014; Accepted: 22 Mar 2014; Available online: 14 Jul 2014; Published: 30 Aug 2014.
Editor(s): Istadi Istadi
Open Access Copyright (c) 2014 by Authors, Published by BCREC Group
Creative Commons License This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
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Abstract
The activated-carbon supported cobalt pthalocyanine as a fixed bed catalyst (CoPc/C) was prepared by impregnation method and its performance on the oxidation of sodium mercaptides in light oil sweetening was investigated. The FTIR, XRD, and SEM analysis indicated that the active component dispersed well on the carrier and the results of the TG analysis showed that CoPc/C has good thermostability. It was tested that the prepared catalyst has a high catalytic activity towards sodium mercaptides. The removal rate of n-C4H9SNa was up to 100 % and for t-C4H9SNa, was 87.5% at a reaction time of 30 min. With the reaction temperature raised from 20 °C to 60 °C at intervals of ten degrees, the oxidation rate increased obviously, especially in the first ten minutes. A kinetic model mainly related to the transfer process was supposed. The catalyst CoPc/C had a good anti-loss performance of the active component both in water and alkali liquor when used. © 2014 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0)
Keywords: fixed bed catalyst; sweetening; oxidation; sodium mercaptide; light oil
Funding: State Key Laboratory of Heavy Oil Processing, China

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Section: Original Research Articles
Language : EN
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