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Conversion of methyl mercaptan and methanol to hydrocarbons over solid acid catalysts – A comparative study

Paper ID Volume ID Publish Year Pages File Format Full-Text
45392 46410 2014 7 PDF Available
Title
Conversion of methyl mercaptan and methanol to hydrocarbons over solid acid catalysts – A comparative study
Abstract

•CH3SH is selectively converted into H2S and hydrocarbons over zeolites (M2TH process).•The catalyst lifetime significantly increased in the presence of water.•M2TH is compared with the well-known MTH (methanol to hydrocarbons) process.•Reaction pathways are proposed for each process.

This study demonstrates that CH3SH (a harmful impurity in natural gas) can be selectively converted into H2S and hydrocarbons (M2TH process) on H-zeolite/zeotype with diverse topologies. The catalytic activity varied as follows: H-ZSM-5 > H-Y > H-FER > H-BEA > H-MOR > H-SAPO-34. In addition, H-ZSM-5 was the most stable catalyst toward deactivation by coke. The effect of the carrier gas (nitrogen or methane) and the role of water on the catalytic behavior of zeolites were explored under different conditions. Similar performances were obtained using CH3SH/N2 or CH3SH/CH4 mixtures, but the amount of coke drastically decreased and the catalyst lifetime increased when 2% of water was added into the reaction. M2TH was compared with the well-known MTH (methanol to hydrocarbons) process. Although there are similarities between the two processes, significant differences were also observed, essentially regarding the products formed and distributed. These aspects are discussed taking into account the reaction pathway involved in each process.

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Keywords
Methylmercaptan; Methanol; Zeolites; Catalysis; Desulfurization
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Conversion of methyl mercaptan and methanol to hydrocarbons over solid acid catalysts – A comparative study
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 144, January 2014, Pages 547–553
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us