Selective hydrogenation of mixed C4 containing high vinyl acetylene by Mn-Pd, Ni-Pd and Ag-Pd on Al2O3 catalysts

•We synthesized Pd on alumina catalyst which can achieve hydrogenation of vinyl acetylene C4 sampling from a commercialized process.•The addition of other metals on to Pd/Al2O3 improves catalytic performances especially Mn addition.•TPR profile showed the interaction between Pd and added metals. The...

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Bibliographic Details
Published in:Catalysis today 2015-11, Vol.256, p.223-230
Main Authors: Insorn, Paisan, Kitiyanan, Boonyarach
Format: Article
Language:English
Subjects:
Bimetallic catalyst
Mn-Pd
Selective hydrogenation
Vinyl acetylene
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Summary:•We synthesized Pd on alumina catalyst which can achieve hydrogenation of vinyl acetylene C4 sampling from a commercialized process.•The addition of other metals on to Pd/Al2O3 improves catalytic performances especially Mn addition.•TPR profile showed the interaction between Pd and added metals. The waste stream containing high vinyl acetylene concentration from a commercial mixed C4 process was tested for the hydrogenation reaction by Pd, Mn-Pd, Ni-Pd, and Ag-Pd supported on alumina catalysts in a recirculating reactor. Mn-promoted Pd/Al2O3 catalyst with Pd/Mn molar ratio 1:2 not only increases the activity, but also significantly increases the selectivity and yield toward 1,3-butadiene. Adding Ni to Pd/Al2O3 catalysts improves only the activity, but not the selectivity, while adding Ag improves neither the activity nor the selectivity toward 1,3-butadiene.
ISSN:0920-5861
1873-4308
DOI:10.1016/j.cattod.2015.01.042