ISOBUTANOL FROM SYNGAS IN A THREE PHASE SYSTEM

Technical Report · Sun Dec 29 04:00:00 EST 2002

DOI:https://doi.org/10.2172/875781· OSTI ID:875781

Tijrn, Peter ^[1]

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1. Air Products and Chemicals, Inc.

With growing interest in oxygenates as octane booster for automotive fuels, various synthesis routes for these chemicals are being investigated. Among others, alternative routes to isobutene, the C4-components in MTBE-synthesis are under investigation. A promising path to isobutene is the heterogeneously catalyzed CO-hydrogenation to isobutanol with following dehydration (Fig. 1). As shown by thermodynamical studies, the heterogeneously catalyzed CO-hydrogenation to isobutanol is not expected to experience any thermodynamic constraints. However, heterogeneous hydrogenation of CO is a very exothermic process, a problem which can only be partly solved when being conducted in a plug flow reactor. When carried out in reaction vessels with moving catalyst bed (e.g. three phase stirred tank), heat transfer problems can be resolved, along with additional benefits connected with this reactor type. Several heterogeneous catalytic systems have been under investigation for their capability of isobutanol synthesis from syngas. Most promising catalysts for an active and selective isobutanol synthesis from CO are modified high temperature methanol catalysts.

• Research Organization: Air Products and Chemicals, Inc.
• Sponsoring Organization: USDOE
• DOE Contract Number: FC22-95PC93052
• OSTI ID: 875781
• Country of Publication: United States
• Language: English

Related Subjects

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AUTOMOTIVE FUELS
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DEHYDRATION
HEAT TRANSFER
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OCTANE
SYNTHESIS
THERMODYNAMICS